blob: 84f186d4b3164ef1f18bcaec4589de726a6337b8 [file] [log] [blame]
Elliott Hughes2faa5f12012-01-30 14:42:07 -08001/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
Carl Shapiro0e5d75d2011-07-06 18:28:37 -070016
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070017#include "class_linker.h"
Carl Shapiro0e5d75d2011-07-06 18:28:37 -070018
Brian Carlstromd601af82012-01-06 10:15:19 -080019#include <fcntl.h>
20#include <sys/file.h>
21#include <sys/stat.h>
Brian Carlstromdbf05b72011-12-15 00:55:24 -080022#include <sys/types.h>
23#include <sys/wait.h>
24
Brian Carlstromdbc05252011-09-09 01:59:59 -070025#include <deque>
Ian Rogers0cfe1fb2011-08-26 03:29:44 -070026#include <string>
Carl Shapiro0e5d75d2011-07-06 18:28:37 -070027#include <utility>
Elliott Hughes90a33692011-08-30 13:27:07 -070028#include <vector>
Carl Shapiro0e5d75d2011-07-06 18:28:37 -070029
Elliott Hughes1aa246d2012-12-13 09:29:36 -080030#include "base/casts.h"
Elliott Hughes07ed66b2012-12-12 18:34:25 -080031#include "base/logging.h"
Elliott Hughes1aa246d2012-12-13 09:29:36 -080032#include "base/stl_util.h"
Elliott Hughes76160052012-12-12 16:31:20 -080033#include "base/unix_file/fd_file.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080034#include "class_linker-inl.h"
Elliott Hughes4740cdf2011-12-07 14:07:12 -080035#include "debugger.h"
Ian Rogers4f6ad8a2013-03-18 15:27:28 -070036#include "dex_file-inl.h"
Ian Rogers1d54e732013-05-02 21:10:01 -070037#include "gc/accounting/card_table-inl.h"
38#include "gc/accounting/heap_bitmap.h"
39#include "gc/heap.h"
40#include "gc/space/image_space.h"
Elliott Hughescf4c6c42011-09-01 15:16:42 -070041#include "intern_table.h"
Ian Rogers64b6d142012-10-29 16:34:15 -070042#include "interpreter/interpreter.h"
Ian Rogers0571d352011-11-03 19:51:38 -070043#include "leb128.h"
Brian Carlstrom700c8d32012-11-05 10:42:02 -080044#include "oat.h"
Brian Carlstrom58ae9412011-10-04 00:56:06 -070045#include "oat_file.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080046#include "mirror/class.h"
47#include "mirror/class-inl.h"
48#include "mirror/class_loader.h"
Ian Rogers39ebcb82013-05-30 16:57:23 -070049#include "mirror/dex_cache-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080050#include "mirror/field-inl.h"
51#include "mirror/iftable-inl.h"
52#include "mirror/abstract_method.h"
53#include "mirror/abstract_method-inl.h"
54#include "mirror/object-inl.h"
55#include "mirror/object_array-inl.h"
56#include "mirror/proxy.h"
57#include "mirror/stack_trace_element.h"
Ian Rogers6d4d9fc2011-11-30 16:24:48 -080058#include "object_utils.h"
Brian Carlstrom5b332c82012-02-01 15:02:31 -080059#include "os.h"
Brian Carlstrom1f870082011-08-23 16:02:11 -070060#include "runtime.h"
Ian Rogers7655f292013-07-29 11:07:13 -070061#include "entrypoints/entrypoint_utils.h"
Elliott Hughes4d0207c2011-10-03 19:14:34 -070062#include "ScopedLocalRef.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070063#include "scoped_thread_state_change.h"
Ian Rogers1f539342012-10-03 21:09:42 -070064#include "sirt_ref.h"
Brian Carlstrom40381fb2011-10-19 14:13:40 -070065#include "stack_indirect_reference_table.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070066#include "thread.h"
Elliott Hughes54e7df12011-09-16 11:47:04 -070067#include "UniquePtr.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070068#include "utils.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080069#include "verifier/method_verifier.h"
Elliott Hugheseac76672012-05-24 21:56:51 -070070#include "well_known_classes.h"
Carl Shapiro0e5d75d2011-07-06 18:28:37 -070071
72namespace art {
73
Jeff Hao0aba0ba2013-06-03 14:49:28 -070074extern "C" void artInterpreterToQuickEntry(Thread* self, MethodHelper& mh,
75 const DexFile::CodeItem* code_item,
76 ShadowFrame* shadow_frame, JValue* result);
Jeff Hao16743632013-05-08 10:59:04 -070077
Ian Rogers00f7d0e2012-07-19 15:28:27 -070078static void ThrowNoClassDefFoundError(const char* fmt, ...)
79 __attribute__((__format__(__printf__, 1, 2)))
Ian Rogersb726dcb2012-09-05 08:57:23 -070080 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Elliott Hughes0512f022012-03-15 22:10:52 -070081static void ThrowNoClassDefFoundError(const char* fmt, ...) {
Elliott Hughes4a2b4172011-09-20 17:08:25 -070082 va_list args;
83 va_start(args, fmt);
Ian Rogers62d6c772013-02-27 08:32:07 -080084 Thread* self = Thread::Current();
85 ThrowLocation throw_location = self->GetCurrentLocationForThrow();
86 self->ThrowNewExceptionV(throw_location, "Ljava/lang/NoClassDefFoundError;", fmt, args);
Ian Rogerscab01012012-01-10 17:35:46 -080087 va_end(args);
88}
89
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080090static void ThrowEarlierClassFailure(mirror::Class* c)
Ian Rogersb726dcb2012-09-05 08:57:23 -070091 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Elliott Hughes5c599942012-06-13 16:45:05 -070092 // The class failed to initialize on a previous attempt, so we want to throw
93 // a NoClassDefFoundError (v2 2.17.5). The exception to this rule is if we
94 // failed in verification, in which case v2 5.4.1 says we need to re-throw
95 // the previous error.
Ian Rogers87e552d2012-08-31 15:54:48 -070096 if (!Runtime::Current()->IsCompiler()) { // Give info if this occurs at runtime.
97 LOG(INFO) << "Rejecting re-init on previously-failed class " << PrettyClass(c);
98 }
Elliott Hughes4a2b4172011-09-20 17:08:25 -070099
Elliott Hughes5c599942012-06-13 16:45:05 -0700100 CHECK(c->IsErroneous()) << PrettyClass(c) << " " << c->GetStatus();
Ian Rogers62d6c772013-02-27 08:32:07 -0800101 Thread* self = Thread::Current();
102 ThrowLocation throw_location = self->GetCurrentLocationForThrow();
Elliott Hughes4a2b4172011-09-20 17:08:25 -0700103 if (c->GetVerifyErrorClass() != NULL) {
104 // TODO: change the verifier to store an _instance_, with a useful detail message?
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800105 ClassHelper ve_ch(c->GetVerifyErrorClass());
Ian Rogers62d6c772013-02-27 08:32:07 -0800106 self->ThrowNewException(throw_location, ve_ch.GetDescriptor(), PrettyDescriptor(c).c_str());
Elliott Hughes4a2b4172011-09-20 17:08:25 -0700107 } else {
Ian Rogers62d6c772013-02-27 08:32:07 -0800108 self->ThrowNewException(throw_location, "Ljava/lang/NoClassDefFoundError;",
109 PrettyDescriptor(c).c_str());
Elliott Hughes4a2b4172011-09-20 17:08:25 -0700110 }
111}
112
Ian Rogers62d6c772013-02-27 08:32:07 -0800113static void WrapExceptionInInitializer() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Elliott Hughesa4f94742012-05-29 16:28:38 -0700114 Thread* self = Thread::Current();
115 JNIEnv* env = self->GetJniEnv();
Elliott Hughes4d0207c2011-10-03 19:14:34 -0700116
117 ScopedLocalRef<jthrowable> cause(env, env->ExceptionOccurred());
118 CHECK(cause.get() != NULL);
119
120 env->ExceptionClear();
Elliott Hughesa4f94742012-05-29 16:28:38 -0700121 bool is_error = env->IsInstanceOf(cause.get(), WellKnownClasses::java_lang_Error);
122 env->Throw(cause.get());
Elliott Hughes4d0207c2011-10-03 19:14:34 -0700123
Elliott Hughesa4f94742012-05-29 16:28:38 -0700124 // We only wrap non-Error exceptions; an Error can just be used as-is.
125 if (!is_error) {
Ian Rogers62d6c772013-02-27 08:32:07 -0800126 ThrowLocation throw_location = self->GetCurrentLocationForThrow();
127 self->ThrowNewWrappedException(throw_location, "Ljava/lang/ExceptionInInitializerError;", NULL);
Elliott Hughes4d0207c2011-10-03 19:14:34 -0700128 }
Elliott Hughes4d0207c2011-10-03 19:14:34 -0700129}
130
Elliott Hughesc3b77c72011-12-15 20:56:48 -0800131static size_t Hash(const char* s) {
132 // This is the java.lang.String hashcode for convenience, not interoperability.
133 size_t hash = 0;
134 for (; *s != '\0'; ++s) {
135 hash = hash * 31 + *s;
136 }
137 return hash;
138}
139
Elliott Hughes418d20f2011-09-22 14:00:39 -0700140const char* ClassLinker::class_roots_descriptors_[] = {
Brian Carlstroma663ea52011-08-19 23:33:41 -0700141 "Ljava/lang/Class;",
142 "Ljava/lang/Object;",
Elliott Hughes418d20f2011-09-22 14:00:39 -0700143 "[Ljava/lang/Class;",
Brian Carlstroma663ea52011-08-19 23:33:41 -0700144 "[Ljava/lang/Object;",
145 "Ljava/lang/String;",
Mathieu Chartier66f19252012-09-18 08:57:04 -0700146 "Ljava/lang/DexCache;",
Elliott Hughesbf61ba32011-10-11 10:53:09 -0700147 "Ljava/lang/ref/Reference;",
Elliott Hughes80609252011-09-23 17:24:51 -0700148 "Ljava/lang/reflect/Constructor;",
Brian Carlstroma663ea52011-08-19 23:33:41 -0700149 "Ljava/lang/reflect/Field;",
Mathieu Chartier66f19252012-09-18 08:57:04 -0700150 "Ljava/lang/reflect/AbstractMethod;",
Brian Carlstroma663ea52011-08-19 23:33:41 -0700151 "Ljava/lang/reflect/Method;",
Ian Rogers466bb252011-10-14 03:29:56 -0700152 "Ljava/lang/reflect/Proxy;",
Mathieu Chartier66f19252012-09-18 08:57:04 -0700153 "[Ljava/lang/String;",
Mathieu Chartier66f19252012-09-18 08:57:04 -0700154 "[Ljava/lang/reflect/AbstractMethod;",
Ian Rogers4445a7e2012-10-05 17:19:13 -0700155 "[Ljava/lang/reflect/Field;",
156 "[Ljava/lang/reflect/Method;",
Brian Carlstroma663ea52011-08-19 23:33:41 -0700157 "Ljava/lang/ClassLoader;",
Ian Rogers5167c972012-02-03 10:41:20 -0800158 "Ljava/lang/Throwable;",
jeffhao8cd6dda2012-02-22 10:15:34 -0800159 "Ljava/lang/ClassNotFoundException;",
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700160 "Ljava/lang/StackTraceElement;",
Brian Carlstroma663ea52011-08-19 23:33:41 -0700161 "Z",
162 "B",
163 "C",
164 "D",
165 "F",
166 "I",
167 "J",
168 "S",
169 "V",
170 "[Z",
171 "[B",
172 "[C",
173 "[D",
174 "[F",
175 "[I",
176 "[J",
177 "[S",
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700178 "[Ljava/lang/StackTraceElement;",
Brian Carlstroma663ea52011-08-19 23:33:41 -0700179};
180
Brian Carlstroma004aa92012-02-08 18:05:09 -0800181ClassLinker* ClassLinker::CreateFromCompiler(const std::vector<const DexFile*>& boot_class_path,
182 InternTable* intern_table) {
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700183 CHECK_NE(boot_class_path.size(), 0U);
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800184 UniquePtr<ClassLinker> class_linker(new ClassLinker(intern_table));
Brian Carlstroma004aa92012-02-08 18:05:09 -0800185 class_linker->InitFromCompiler(boot_class_path);
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700186 return class_linker.release();
187}
188
Brian Carlstroma004aa92012-02-08 18:05:09 -0800189ClassLinker* ClassLinker::CreateFromImage(InternTable* intern_table) {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800190 UniquePtr<ClassLinker> class_linker(new ClassLinker(intern_table));
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700191 class_linker->InitFromImage();
Carl Shapiro61e019d2011-07-14 16:53:09 -0700192 return class_linker.release();
193}
194
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800195ClassLinker::ClassLinker(InternTable* intern_table)
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700196 // dex_lock_ is recursive as it may be used in stack dumping.
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700197 : dex_lock_("ClassLinker dex lock", kDefaultMutexLevel),
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -0700198 class_roots_(NULL),
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700199 array_iftable_(NULL),
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700200 init_done_(false),
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -0700201 is_dirty_(false),
Jeff Hao0aba0ba2013-06-03 14:49:28 -0700202 intern_table_(intern_table),
203 portable_resolution_trampoline_(NULL),
204 quick_resolution_trampoline_(NULL) {
Elliott Hughes418d20f2011-09-22 14:00:39 -0700205 CHECK_EQ(arraysize(class_roots_descriptors_), size_t(kClassRootsMax));
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -0700206}
Brian Carlstroma663ea52011-08-19 23:33:41 -0700207
Brian Carlstroma004aa92012-02-08 18:05:09 -0800208void ClassLinker::InitFromCompiler(const std::vector<const DexFile*>& boot_class_path) {
209 VLOG(startup) << "ClassLinker::Init";
210 CHECK(Runtime::Current()->IsCompiler());
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700211
Elliott Hughesd8ddfd52011-08-15 14:32:53 -0700212 CHECK(!init_done_);
Brian Carlstrom578bbdc2011-07-21 14:07:47 -0700213
Elliott Hughes30646832011-10-13 16:59:46 -0700214 // java_lang_Class comes first, it's needed for AllocClass
Ian Rogers1f539342012-10-03 21:09:42 -0700215 Thread* self = Thread::Current();
Ian Rogers1d54e732013-05-02 21:10:01 -0700216 gc::Heap* heap = Runtime::Current()->GetHeap();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800217 SirtRef<mirror::Class>
218 java_lang_Class(self,
219 down_cast<mirror::Class*>(heap->AllocObject(self, NULL,
220 sizeof(mirror::ClassClass))));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700221 CHECK(java_lang_Class.get() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800222 mirror::Class::SetClassClass(java_lang_Class.get());
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700223 java_lang_Class->SetClass(java_lang_Class.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800224 java_lang_Class->SetClassSize(sizeof(mirror::ClassClass));
225 // AllocClass(mirror::Class*) can now be used
Brian Carlstroma0808032011-07-18 00:39:23 -0700226
Elliott Hughes418d20f2011-09-22 14:00:39 -0700227 // Class[] is used for reflection support.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800228 SirtRef<mirror::Class> class_array_class(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700229 class_array_class->SetComponentType(java_lang_Class.get());
Elliott Hughes418d20f2011-09-22 14:00:39 -0700230
Ian Rogers23435d02012-09-24 11:23:12 -0700231 // java_lang_Object comes next so that object_array_class can be created.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800232 SirtRef<mirror::Class> java_lang_Object(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700233 CHECK(java_lang_Object.get() != NULL);
Ian Rogers23435d02012-09-24 11:23:12 -0700234 // backfill Object as the super class of Class.
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700235 java_lang_Class->SetSuperClass(java_lang_Object.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800236 java_lang_Object->SetStatus(mirror::Class::kStatusLoaded);
Brian Carlstroma0808032011-07-18 00:39:23 -0700237
Ian Rogers23435d02012-09-24 11:23:12 -0700238 // Object[] next to hold class roots.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800239 SirtRef<mirror::Class> object_array_class(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700240 object_array_class->SetComponentType(java_lang_Object.get());
Brian Carlstroma0808032011-07-18 00:39:23 -0700241
Ian Rogers23435d02012-09-24 11:23:12 -0700242 // Setup the char class to be used for char[].
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800243 SirtRef<mirror::Class> char_class(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700244
Ian Rogers23435d02012-09-24 11:23:12 -0700245 // Setup the char[] class to be used for String.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800246 SirtRef<mirror::Class> char_array_class(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700247 char_array_class->SetComponentType(char_class.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800248 mirror::CharArray::SetArrayClass(char_array_class.get());
Brian Carlstrom9cff8e12011-08-18 16:47:29 -0700249
Ian Rogers23435d02012-09-24 11:23:12 -0700250 // Setup String.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800251 SirtRef<mirror::Class> java_lang_String(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::StringClass)));
252 mirror::String::SetClass(java_lang_String.get());
253 java_lang_String->SetObjectSize(sizeof(mirror::String));
254 java_lang_String->SetStatus(mirror::Class::kStatusResolved);
Jesse Wilson14150742011-07-29 19:04:44 -0400255
Ian Rogers23435d02012-09-24 11:23:12 -0700256 // Create storage for root classes, save away our work so far (requires descriptors).
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800257 class_roots_ = mirror::ObjectArray<mirror::Class>::Alloc(self, object_array_class.get(), kClassRootsMax);
Elliott Hughes30646832011-10-13 16:59:46 -0700258 CHECK(class_roots_ != NULL);
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700259 SetClassRoot(kJavaLangClass, java_lang_Class.get());
260 SetClassRoot(kJavaLangObject, java_lang_Object.get());
261 SetClassRoot(kClassArrayClass, class_array_class.get());
262 SetClassRoot(kObjectArrayClass, object_array_class.get());
263 SetClassRoot(kCharArrayClass, char_array_class.get());
264 SetClassRoot(kJavaLangString, java_lang_String.get());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700265
266 // Setup the primitive type classes.
Ian Rogers50b35e22012-10-04 10:09:15 -0700267 SetClassRoot(kPrimitiveBoolean, CreatePrimitiveClass(self, Primitive::kPrimBoolean));
268 SetClassRoot(kPrimitiveByte, CreatePrimitiveClass(self, Primitive::kPrimByte));
269 SetClassRoot(kPrimitiveShort, CreatePrimitiveClass(self, Primitive::kPrimShort));
270 SetClassRoot(kPrimitiveInt, CreatePrimitiveClass(self, Primitive::kPrimInt));
271 SetClassRoot(kPrimitiveLong, CreatePrimitiveClass(self, Primitive::kPrimLong));
272 SetClassRoot(kPrimitiveFloat, CreatePrimitiveClass(self, Primitive::kPrimFloat));
273 SetClassRoot(kPrimitiveDouble, CreatePrimitiveClass(self, Primitive::kPrimDouble));
274 SetClassRoot(kPrimitiveVoid, CreatePrimitiveClass(self, Primitive::kPrimVoid));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700275
Ian Rogers23435d02012-09-24 11:23:12 -0700276 // Create array interface entries to populate once we can load system classes.
Ian Rogers50b35e22012-10-04 10:09:15 -0700277 array_iftable_ = AllocIfTable(self, 2);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700278
Ian Rogers23435d02012-09-24 11:23:12 -0700279 // Create int array type for AllocDexCache (done in AppendToBootClassPath).
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800280 SirtRef<mirror::Class> int_array_class(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700281 int_array_class->SetComponentType(GetClassRoot(kPrimitiveInt));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800282 mirror::IntArray::SetArrayClass(int_array_class.get());
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700283 SetClassRoot(kIntArrayClass, int_array_class.get());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700284
Brian Carlstrom75cb3b42011-07-28 02:13:36 -0700285 // now that these are registered, we can use AllocClass() and AllocObjectArray
Brian Carlstroma0808032011-07-18 00:39:23 -0700286
Ian Rogers52813c92012-10-11 11:50:38 -0700287 // Set up DexCache. This cannot be done later since AppendToBootClassPath calls AllocDexCache.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800288 SirtRef<mirror::Class>
289 java_lang_DexCache(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::DexCacheClass)));
Mathieu Chartier66f19252012-09-18 08:57:04 -0700290 SetClassRoot(kJavaLangDexCache, java_lang_DexCache.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800291 java_lang_DexCache->SetObjectSize(sizeof(mirror::DexCacheClass));
292 java_lang_DexCache->SetStatus(mirror::Class::kStatusResolved);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700293
Mathieu Chartier66f19252012-09-18 08:57:04 -0700294 // Constructor, Field, Method, and AbstractMethod are necessary so that FindClass can link members.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800295 SirtRef<mirror::Class> java_lang_reflect_Field(self, AllocClass(self, java_lang_Class.get(),
296 sizeof(mirror::FieldClass)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700297 CHECK(java_lang_reflect_Field.get() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800298 java_lang_reflect_Field->SetObjectSize(sizeof(mirror::Field));
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700299 SetClassRoot(kJavaLangReflectField, java_lang_reflect_Field.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800300 java_lang_reflect_Field->SetStatus(mirror::Class::kStatusResolved);
301 mirror::Field::SetClass(java_lang_reflect_Field.get());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700302
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800303 SirtRef<mirror::Class> java_lang_reflect_AbstractMethod(self, AllocClass(self, java_lang_Class.get(),
304 sizeof(mirror::AbstractMethodClass)));
Mathieu Chartier66f19252012-09-18 08:57:04 -0700305 CHECK(java_lang_reflect_AbstractMethod.get() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800306 java_lang_reflect_AbstractMethod->SetObjectSize(sizeof(mirror::AbstractMethod));
Mathieu Chartier66f19252012-09-18 08:57:04 -0700307 SetClassRoot(kJavaLangReflectAbstractMethod, java_lang_reflect_AbstractMethod.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800308 java_lang_reflect_AbstractMethod->SetStatus(mirror::Class::kStatusResolved);
Ian Rogers4445a7e2012-10-05 17:19:13 -0700309
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800310 SirtRef<mirror::Class> java_lang_reflect_Constructor(self, AllocClass(self, java_lang_Class.get(),
311 sizeof(mirror::AbstractMethodClass)));
Ian Rogers4445a7e2012-10-05 17:19:13 -0700312 CHECK(java_lang_reflect_Constructor.get() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800313 java_lang_reflect_Constructor->SetObjectSize(sizeof(mirror::Constructor));
Ian Rogers4445a7e2012-10-05 17:19:13 -0700314 java_lang_reflect_Constructor->SetSuperClass(java_lang_reflect_AbstractMethod.get());
315 SetClassRoot(kJavaLangReflectConstructor, java_lang_reflect_Constructor.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800316 java_lang_reflect_Constructor->SetStatus(mirror::Class::kStatusResolved);
Ian Rogers4445a7e2012-10-05 17:19:13 -0700317
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800318 SirtRef<mirror::Class> java_lang_reflect_Method(self, AllocClass(self, java_lang_Class.get(),
319 sizeof(mirror::AbstractMethodClass)));
Ian Rogers4445a7e2012-10-05 17:19:13 -0700320 CHECK(java_lang_reflect_Method.get() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800321 java_lang_reflect_Method->SetObjectSize(sizeof(mirror::Method));
Ian Rogers4445a7e2012-10-05 17:19:13 -0700322 java_lang_reflect_Method->SetSuperClass(java_lang_reflect_AbstractMethod.get());
323 SetClassRoot(kJavaLangReflectMethod, java_lang_reflect_Method.get());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800324 java_lang_reflect_Method->SetStatus(mirror::Class::kStatusResolved);
Ian Rogers4445a7e2012-10-05 17:19:13 -0700325
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800326 mirror::AbstractMethod::SetClasses(java_lang_reflect_Constructor.get(),
327 java_lang_reflect_Method.get());
Mathieu Chartier66f19252012-09-18 08:57:04 -0700328
329 // Set up array classes for string, field, method
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800330 SirtRef<mirror::Class> object_array_string(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Mathieu Chartier66f19252012-09-18 08:57:04 -0700331 object_array_string->SetComponentType(java_lang_String.get());
332 SetClassRoot(kJavaLangStringArrayClass, object_array_string.get());
333
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800334 SirtRef<mirror::Class> object_array_abstract_method(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Ian Rogers4445a7e2012-10-05 17:19:13 -0700335 object_array_abstract_method->SetComponentType(java_lang_reflect_AbstractMethod.get());
336 SetClassRoot(kJavaLangReflectAbstractMethodArrayClass, object_array_abstract_method.get());
337
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800338 SirtRef<mirror::Class> object_array_field(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Mathieu Chartier66f19252012-09-18 08:57:04 -0700339 object_array_field->SetComponentType(java_lang_reflect_Field.get());
340 SetClassRoot(kJavaLangReflectFieldArrayClass, object_array_field.get());
341
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800342 SirtRef<mirror::Class> object_array_method(self, AllocClass(self, java_lang_Class.get(), sizeof(mirror::Class)));
Ian Rogers4445a7e2012-10-05 17:19:13 -0700343 object_array_method->SetComponentType(java_lang_reflect_Method.get());
344 SetClassRoot(kJavaLangReflectMethodArrayClass, object_array_method.get());
Mathieu Chartier66f19252012-09-18 08:57:04 -0700345
Ian Rogers23435d02012-09-24 11:23:12 -0700346 // Setup boot_class_path_ and register class_path now that we can use AllocObjectArray to create
347 // DexCache instances. Needs to be after String, Field, Method arrays since AllocDexCache uses
348 // these roots.
Mathieu Chartier66f19252012-09-18 08:57:04 -0700349 CHECK_NE(0U, boot_class_path.size());
350 for (size_t i = 0; i != boot_class_path.size(); ++i) {
351 const DexFile* dex_file = boot_class_path[i];
352 CHECK(dex_file != NULL);
353 AppendToBootClassPath(*dex_file);
354 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700355
356 // now we can use FindSystemClass
357
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700358 // run char class through InitializePrimitiveClass to finish init
Ian Rogersc8982582012-09-07 16:53:25 -0700359 InitializePrimitiveClass(char_class.get(), Primitive::kPrimChar);
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700360 SetClassRoot(kPrimitiveChar, char_class.get()); // needs descriptor
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700361
Mathieu Chartier66f19252012-09-18 08:57:04 -0700362 // Object, String and DexCache need to be rerun through FindSystemClass to finish init
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800363 java_lang_Object->SetStatus(mirror::Class::kStatusNotReady);
364 mirror::Class* Object_class = FindSystemClass("Ljava/lang/Object;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700365 CHECK_EQ(java_lang_Object.get(), Object_class);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800366 CHECK_EQ(java_lang_Object->GetObjectSize(), sizeof(mirror::Object));
367 java_lang_String->SetStatus(mirror::Class::kStatusNotReady);
368 mirror::Class* String_class = FindSystemClass("Ljava/lang/String;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700369 CHECK_EQ(java_lang_String.get(), String_class);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800370 CHECK_EQ(java_lang_String->GetObjectSize(), sizeof(mirror::String));
371 java_lang_DexCache->SetStatus(mirror::Class::kStatusNotReady);
372 mirror::Class* DexCache_class = FindSystemClass("Ljava/lang/DexCache;");
Mathieu Chartier66f19252012-09-18 08:57:04 -0700373 CHECK_EQ(java_lang_String.get(), String_class);
374 CHECK_EQ(java_lang_DexCache.get(), DexCache_class);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800375 CHECK_EQ(java_lang_DexCache->GetObjectSize(), sizeof(mirror::DexCache));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700376
Ian Rogers23435d02012-09-24 11:23:12 -0700377 // Setup the primitive array type classes - can't be done until Object has a vtable.
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700378 SetClassRoot(kBooleanArrayClass, FindSystemClass("[Z"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800379 mirror::BooleanArray::SetArrayClass(GetClassRoot(kBooleanArrayClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700380
381 SetClassRoot(kByteArrayClass, FindSystemClass("[B"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800382 mirror::ByteArray::SetArrayClass(GetClassRoot(kByteArrayClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700383
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800384 mirror::Class* found_char_array_class = FindSystemClass("[C");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700385 CHECK_EQ(char_array_class.get(), found_char_array_class);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700386
387 SetClassRoot(kShortArrayClass, FindSystemClass("[S"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800388 mirror::ShortArray::SetArrayClass(GetClassRoot(kShortArrayClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700389
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800390 mirror::Class* found_int_array_class = FindSystemClass("[I");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700391 CHECK_EQ(int_array_class.get(), found_int_array_class);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700392
393 SetClassRoot(kLongArrayClass, FindSystemClass("[J"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800394 mirror::LongArray::SetArrayClass(GetClassRoot(kLongArrayClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700395
396 SetClassRoot(kFloatArrayClass, FindSystemClass("[F"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800397 mirror::FloatArray::SetArrayClass(GetClassRoot(kFloatArrayClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700398
399 SetClassRoot(kDoubleArrayClass, FindSystemClass("[D"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800400 mirror::DoubleArray::SetArrayClass(GetClassRoot(kDoubleArrayClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700401
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800402 mirror::Class* found_class_array_class = FindSystemClass("[Ljava/lang/Class;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700403 CHECK_EQ(class_array_class.get(), found_class_array_class);
Elliott Hughes418d20f2011-09-22 14:00:39 -0700404
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800405 mirror::Class* found_object_array_class = FindSystemClass("[Ljava/lang/Object;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700406 CHECK_EQ(object_array_class.get(), found_object_array_class);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700407
Ian Rogers23435d02012-09-24 11:23:12 -0700408 // Setup the single, global copy of "iftable".
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800409 mirror::Class* java_lang_Cloneable = FindSystemClass("Ljava/lang/Cloneable;");
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700410 CHECK(java_lang_Cloneable != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800411 mirror::Class* java_io_Serializable = FindSystemClass("Ljava/io/Serializable;");
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700412 CHECK(java_io_Serializable != NULL);
Ian Rogers23435d02012-09-24 11:23:12 -0700413 // We assume that Cloneable/Serializable don't have superinterfaces -- normally we'd have to
414 // crawl up and explicitly list all of the supers as well.
Ian Rogers9bc81912012-10-11 21:43:36 -0700415 array_iftable_->SetInterface(0, java_lang_Cloneable);
416 array_iftable_->SetInterface(1, java_io_Serializable);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700417
Ian Rogers23435d02012-09-24 11:23:12 -0700418 // Sanity check Class[] and Object[]'s interfaces.
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800419 ClassHelper kh(class_array_class.get(), this);
Ian Rogersd24e2642012-06-06 21:21:43 -0700420 CHECK_EQ(java_lang_Cloneable, kh.GetDirectInterface(0));
421 CHECK_EQ(java_io_Serializable, kh.GetDirectInterface(1));
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800422 kh.ChangeClass(object_array_class.get());
Ian Rogersd24e2642012-06-06 21:21:43 -0700423 CHECK_EQ(java_lang_Cloneable, kh.GetDirectInterface(0));
424 CHECK_EQ(java_io_Serializable, kh.GetDirectInterface(1));
Ian Rogers23435d02012-09-24 11:23:12 -0700425 // Run Class, Constructor, Field, and Method through FindSystemClass. This initializes their
426 // dex_cache_ fields and register them in classes_.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800427 mirror::Class* Class_class = FindSystemClass("Ljava/lang/Class;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700428 CHECK_EQ(java_lang_Class.get(), Class_class);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700429
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800430 java_lang_reflect_AbstractMethod->SetStatus(mirror::Class::kStatusNotReady);
431 mirror::Class* Abstract_method_class = FindSystemClass("Ljava/lang/reflect/AbstractMethod;");
Mathieu Chartier66f19252012-09-18 08:57:04 -0700432 CHECK_EQ(java_lang_reflect_AbstractMethod.get(), Abstract_method_class);
433
434 // Method extends AbstractMethod so must reset after.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800435 java_lang_reflect_Method->SetStatus(mirror::Class::kStatusNotReady);
436 mirror::Class* Method_class = FindSystemClass("Ljava/lang/reflect/Method;");
Mathieu Chartier66f19252012-09-18 08:57:04 -0700437 CHECK_EQ(java_lang_reflect_Method.get(), Method_class);
438
439 // Constructor extends AbstractMethod so must reset after.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800440 java_lang_reflect_Constructor->SetStatus(mirror::Class::kStatusNotReady);
441 mirror::Class* Constructor_class = FindSystemClass("Ljava/lang/reflect/Constructor;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700442 CHECK_EQ(java_lang_reflect_Constructor.get(), Constructor_class);
Elliott Hughes80609252011-09-23 17:24:51 -0700443
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800444 java_lang_reflect_Field->SetStatus(mirror::Class::kStatusNotReady);
445 mirror::Class* Field_class = FindSystemClass("Ljava/lang/reflect/Field;");
Brian Carlstrom40381fb2011-10-19 14:13:40 -0700446 CHECK_EQ(java_lang_reflect_Field.get(), Field_class);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700447
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800448 mirror::Class* String_array_class = FindSystemClass(class_roots_descriptors_[kJavaLangStringArrayClass]);
Mathieu Chartier66f19252012-09-18 08:57:04 -0700449 CHECK_EQ(object_array_string.get(), String_array_class);
450
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800451 mirror::Class* Abstract_method_array_class =
Mathieu Chartier66f19252012-09-18 08:57:04 -0700452 FindSystemClass(class_roots_descriptors_[kJavaLangReflectAbstractMethodArrayClass]);
453 CHECK_EQ(object_array_abstract_method.get(), Abstract_method_array_class);
Brian Carlstrom1f870082011-08-23 16:02:11 -0700454
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800455 mirror::Class* Field_array_class = FindSystemClass(class_roots_descriptors_[kJavaLangReflectFieldArrayClass]);
Ian Rogers4445a7e2012-10-05 17:19:13 -0700456 CHECK_EQ(object_array_field.get(), Field_array_class);
457
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800458 mirror::Class* Method_array_class =
Ian Rogers4445a7e2012-10-05 17:19:13 -0700459 FindSystemClass(class_roots_descriptors_[kJavaLangReflectMethodArrayClass]);
460 CHECK_EQ(object_array_method.get(), Method_array_class);
461
Ian Rogers23435d02012-09-24 11:23:12 -0700462 // End of special init trickery, subsequent classes may be loaded via FindSystemClass.
Ian Rogers466bb252011-10-14 03:29:56 -0700463
Ian Rogers23435d02012-09-24 11:23:12 -0700464 // Create java.lang.reflect.Proxy root.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800465 mirror::Class* java_lang_reflect_Proxy = FindSystemClass("Ljava/lang/reflect/Proxy;");
Ian Rogers466bb252011-10-14 03:29:56 -0700466 SetClassRoot(kJavaLangReflectProxy, java_lang_reflect_Proxy);
467
Brian Carlstrom1f870082011-08-23 16:02:11 -0700468 // java.lang.ref classes need to be specially flagged, but otherwise are normal classes
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800469 mirror::Class* java_lang_ref_Reference = FindSystemClass("Ljava/lang/ref/Reference;");
Elliott Hughesbf61ba32011-10-11 10:53:09 -0700470 SetClassRoot(kJavaLangRefReference, java_lang_ref_Reference);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800471 mirror::Class* java_lang_ref_FinalizerReference = FindSystemClass("Ljava/lang/ref/FinalizerReference;");
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700472 java_lang_ref_FinalizerReference->SetAccessFlags(
473 java_lang_ref_FinalizerReference->GetAccessFlags() |
474 kAccClassIsReference | kAccClassIsFinalizerReference);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800475 mirror::Class* java_lang_ref_PhantomReference = FindSystemClass("Ljava/lang/ref/PhantomReference;");
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700476 java_lang_ref_PhantomReference->SetAccessFlags(
477 java_lang_ref_PhantomReference->GetAccessFlags() |
478 kAccClassIsReference | kAccClassIsPhantomReference);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800479 mirror::Class* java_lang_ref_SoftReference = FindSystemClass("Ljava/lang/ref/SoftReference;");
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700480 java_lang_ref_SoftReference->SetAccessFlags(
481 java_lang_ref_SoftReference->GetAccessFlags() | kAccClassIsReference);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800482 mirror::Class* java_lang_ref_WeakReference = FindSystemClass("Ljava/lang/ref/WeakReference;");
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700483 java_lang_ref_WeakReference->SetAccessFlags(
484 java_lang_ref_WeakReference->GetAccessFlags() |
485 kAccClassIsReference | kAccClassIsWeakReference);
Brian Carlstrom1f870082011-08-23 16:02:11 -0700486
Ian Rogers23435d02012-09-24 11:23:12 -0700487 // Setup the ClassLoader, verifying the object_size_.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800488 mirror::Class* java_lang_ClassLoader = FindSystemClass("Ljava/lang/ClassLoader;");
489 CHECK_EQ(java_lang_ClassLoader->GetObjectSize(), sizeof(mirror::ClassLoader));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700490 SetClassRoot(kJavaLangClassLoader, java_lang_ClassLoader);
491
jeffhao8cd6dda2012-02-22 10:15:34 -0800492 // Set up java.lang.Throwable, java.lang.ClassNotFoundException, and
Ian Rogers23435d02012-09-24 11:23:12 -0700493 // java.lang.StackTraceElement as a convenience.
Ian Rogers5167c972012-02-03 10:41:20 -0800494 SetClassRoot(kJavaLangThrowable, FindSystemClass("Ljava/lang/Throwable;"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800495 mirror::Throwable::SetClass(GetClassRoot(kJavaLangThrowable));
jeffhao8cd6dda2012-02-22 10:15:34 -0800496 SetClassRoot(kJavaLangClassNotFoundException, FindSystemClass("Ljava/lang/ClassNotFoundException;"));
Brian Carlstrom1f870082011-08-23 16:02:11 -0700497 SetClassRoot(kJavaLangStackTraceElement, FindSystemClass("Ljava/lang/StackTraceElement;"));
498 SetClassRoot(kJavaLangStackTraceElementArrayClass, FindSystemClass("[Ljava/lang/StackTraceElement;"));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800499 mirror::StackTraceElement::SetClass(GetClassRoot(kJavaLangStackTraceElement));
Elliott Hughesd8ddfd52011-08-15 14:32:53 -0700500
Brian Carlstroma663ea52011-08-19 23:33:41 -0700501 FinishInit();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700502
Brian Carlstroma004aa92012-02-08 18:05:09 -0800503 VLOG(startup) << "ClassLinker::InitFromCompiler exiting";
Brian Carlstroma663ea52011-08-19 23:33:41 -0700504}
505
506void ClassLinker::FinishInit() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800507 VLOG(startup) << "ClassLinker::FinishInit entering";
Brian Carlstrom16192862011-09-12 17:50:06 -0700508
509 // Let the heap know some key offsets into java.lang.ref instances
Elliott Hughes20cde902011-10-04 17:37:27 -0700510 // Note: we hard code the field indexes here rather than using FindInstanceField
Brian Carlstrom16192862011-09-12 17:50:06 -0700511 // as the types of the field can't be resolved prior to the runtime being
512 // fully initialized
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800513 mirror::Class* java_lang_ref_Reference = GetClassRoot(kJavaLangRefReference);
514 mirror::Class* java_lang_ref_ReferenceQueue = FindSystemClass("Ljava/lang/ref/ReferenceQueue;");
515 mirror::Class* java_lang_ref_FinalizerReference = FindSystemClass("Ljava/lang/ref/FinalizerReference;");
Brian Carlstrom16192862011-09-12 17:50:06 -0700516
Ian Rogers4445a7e2012-10-05 17:19:13 -0700517 const DexFile& java_lang_dex = *java_lang_ref_Reference->GetDexCache()->GetDexFile();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800518
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800519 mirror::Field* pendingNext = java_lang_ref_Reference->GetInstanceField(0);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800520 FieldHelper fh(pendingNext, this);
521 CHECK_STREQ(fh.GetName(), "pendingNext");
522 CHECK_EQ(java_lang_dex.GetFieldId(pendingNext->GetDexFieldIndex()).type_idx_,
523 java_lang_ref_Reference->GetDexTypeIndex());
Brian Carlstrom16192862011-09-12 17:50:06 -0700524
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800525 mirror::Field* queue = java_lang_ref_Reference->GetInstanceField(1);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800526 fh.ChangeField(queue);
527 CHECK_STREQ(fh.GetName(), "queue");
528 CHECK_EQ(java_lang_dex.GetFieldId(queue->GetDexFieldIndex()).type_idx_,
529 java_lang_ref_ReferenceQueue->GetDexTypeIndex());
Brian Carlstrom16192862011-09-12 17:50:06 -0700530
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800531 mirror::Field* queueNext = java_lang_ref_Reference->GetInstanceField(2);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800532 fh.ChangeField(queueNext);
533 CHECK_STREQ(fh.GetName(), "queueNext");
534 CHECK_EQ(java_lang_dex.GetFieldId(queueNext->GetDexFieldIndex()).type_idx_,
535 java_lang_ref_Reference->GetDexTypeIndex());
Brian Carlstrom16192862011-09-12 17:50:06 -0700536
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800537 mirror::Field* referent = java_lang_ref_Reference->GetInstanceField(3);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800538 fh.ChangeField(referent);
539 CHECK_STREQ(fh.GetName(), "referent");
540 CHECK_EQ(java_lang_dex.GetFieldId(referent->GetDexFieldIndex()).type_idx_,
541 GetClassRoot(kJavaLangObject)->GetDexTypeIndex());
Brian Carlstrom16192862011-09-12 17:50:06 -0700542
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800543 mirror::Field* zombie = java_lang_ref_FinalizerReference->GetInstanceField(2);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800544 fh.ChangeField(zombie);
545 CHECK_STREQ(fh.GetName(), "zombie");
546 CHECK_EQ(java_lang_dex.GetFieldId(zombie->GetDexFieldIndex()).type_idx_,
547 GetClassRoot(kJavaLangObject)->GetDexTypeIndex());
Brian Carlstrom16192862011-09-12 17:50:06 -0700548
Ian Rogers1d54e732013-05-02 21:10:01 -0700549 gc::Heap* heap = Runtime::Current()->GetHeap();
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800550 heap->SetReferenceOffsets(referent->GetOffset(),
Brian Carlstrom16192862011-09-12 17:50:06 -0700551 queue->GetOffset(),
552 queueNext->GetOffset(),
553 pendingNext->GetOffset(),
554 zombie->GetOffset());
555
Brian Carlstroma663ea52011-08-19 23:33:41 -0700556 // ensure all class_roots_ are initialized
Brian Carlstrom75cb3b42011-07-28 02:13:36 -0700557 for (size_t i = 0; i < kClassRootsMax; i++) {
Brian Carlstroma663ea52011-08-19 23:33:41 -0700558 ClassRoot class_root = static_cast<ClassRoot>(i);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800559 mirror::Class* klass = GetClassRoot(class_root);
Brian Carlstroma663ea52011-08-19 23:33:41 -0700560 CHECK(klass != NULL);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700561 DCHECK(klass->IsArrayClass() || klass->IsPrimitive() || klass->GetDexCache() != NULL);
Brian Carlstroma663ea52011-08-19 23:33:41 -0700562 // note SetClassRoot does additional validation.
563 // if possible add new checks there to catch errors early
Brian Carlstrom75cb3b42011-07-28 02:13:36 -0700564 }
565
Elliott Hughes92f14b22011-10-06 12:29:54 -0700566 CHECK(array_iftable_ != NULL);
Elliott Hughes92f14b22011-10-06 12:29:54 -0700567
Brian Carlstrom75cb3b42011-07-28 02:13:36 -0700568 // disable the slow paths in FindClass and CreatePrimitiveClass now
569 // that Object, Class, and Object[] are setup
570 init_done_ = true;
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700571
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800572 VLOG(startup) << "ClassLinker::FinishInit exiting";
Brian Carlstrom75cb3b42011-07-28 02:13:36 -0700573}
574
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700575void ClassLinker::RunRootClinits() {
576 Thread* self = Thread::Current();
577 for (size_t i = 0; i < ClassLinker::kClassRootsMax; ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800578 mirror::Class* c = GetClassRoot(ClassRoot(i));
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700579 if (!c->IsArrayClass() && !c->IsPrimitive()) {
Ian Rogers0045a292012-03-31 21:08:41 -0700580 EnsureInitialized(GetClassRoot(ClassRoot(i)), true, true);
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700581 self->AssertNoPendingException();
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700582 }
583 }
584}
585
Brian Carlstromd601af82012-01-06 10:15:19 -0800586bool ClassLinker::GenerateOatFile(const std::string& dex_filename,
587 int oat_fd,
588 const std::string& oat_cache_filename) {
Brian Carlstroma56fcd62012-02-04 21:23:01 -0800589 std::string dex2oat_string(GetAndroidRoot());
Elliott Hughes67d92002012-03-26 15:08:51 -0700590 dex2oat_string += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat");
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800591 const char* dex2oat = dex2oat_string.c_str();
592
Brian Carlstroma004aa92012-02-08 18:05:09 -0800593 const char* class_path = Runtime::Current()->GetClassPathString().c_str();
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800594
Ian Rogers1d54e732013-05-02 21:10:01 -0700595 gc::Heap* heap = Runtime::Current()->GetHeap();
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800596 std::string boot_image_option_string("--boot-image=");
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700597 boot_image_option_string += heap->GetImageSpace()->GetImageFilename();
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800598 const char* boot_image_option = boot_image_option_string.c_str();
599
600 std::string dex_file_option_string("--dex-file=");
Brian Carlstromd601af82012-01-06 10:15:19 -0800601 dex_file_option_string += dex_filename;
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800602 const char* dex_file_option = dex_file_option_string.c_str();
603
Brian Carlstromd601af82012-01-06 10:15:19 -0800604 std::string oat_fd_option_string("--oat-fd=");
Brian Carlstrom866c8622012-01-06 16:35:13 -0800605 StringAppendF(&oat_fd_option_string, "%d", oat_fd);
Brian Carlstromd601af82012-01-06 10:15:19 -0800606 const char* oat_fd_option = oat_fd_option_string.c_str();
607
Brian Carlstroma004aa92012-02-08 18:05:09 -0800608 std::string oat_location_option_string("--oat-location=");
609 oat_location_option_string += oat_cache_filename;
610 const char* oat_location_option = oat_location_option_string.c_str();
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800611
jeffhao262bf462011-10-20 18:36:32 -0700612 // fork and exec dex2oat
613 pid_t pid = fork();
614 if (pid == 0) {
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800615 // no allocation allowed between fork and exec
Ian Rogers725aee52012-01-11 11:56:56 -0800616
617 // change process groups, so we don't get reaped by ProcessManager
618 setpgid(0, 0);
619
jeffhao10037c82012-01-23 15:06:23 -0800620 VLOG(class_linker) << dex2oat
621 << " --runtime-arg -Xms64m"
622 << " --runtime-arg -Xmx64m"
623 << " --runtime-arg -classpath"
624 << " --runtime-arg " << class_path
Brian Carlstrom265091e2013-01-30 14:08:26 -0800625#if !defined(ART_TARGET)
626 << " --host"
627#endif
jeffhao10037c82012-01-23 15:06:23 -0800628 << " " << boot_image_option
629 << " " << dex_file_option
630 << " " << oat_fd_option
Brian Carlstroma004aa92012-02-08 18:05:09 -0800631 << " " << oat_location_option;
jeffhao10037c82012-01-23 15:06:23 -0800632
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800633 execl(dex2oat, dex2oat,
jeffhao5d840402011-10-24 17:09:45 -0700634 "--runtime-arg", "-Xms64m",
635 "--runtime-arg", "-Xmx64m",
Jesse Wilson254db0f2011-11-16 16:44:11 -0500636 "--runtime-arg", "-classpath",
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800637 "--runtime-arg", class_path,
Brian Carlstrom265091e2013-01-30 14:08:26 -0800638#if !defined(ART_TARGET)
639 "--host",
640#endif
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800641 boot_image_option,
642 dex_file_option,
Brian Carlstromd601af82012-01-06 10:15:19 -0800643 oat_fd_option,
Brian Carlstroma004aa92012-02-08 18:05:09 -0800644 oat_location_option,
jeffhao262bf462011-10-20 18:36:32 -0700645 NULL);
646
Brian Carlstrom29e7ac72011-12-05 23:42:57 -0800647 PLOG(FATAL) << "execl(" << dex2oat << ") failed";
Brian Carlstromd601af82012-01-06 10:15:19 -0800648 return false;
jeffhao262bf462011-10-20 18:36:32 -0700649 } else {
650 // wait for dex2oat to finish
651 int status;
652 pid_t got_pid = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0));
653 if (got_pid != pid) {
654 PLOG(ERROR) << "waitpid failed: wanted " << pid << ", got " << got_pid;
Brian Carlstromd601af82012-01-06 10:15:19 -0800655 return false;
jeffhao262bf462011-10-20 18:36:32 -0700656 }
657 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
Brian Carlstromd601af82012-01-06 10:15:19 -0800658 LOG(ERROR) << dex2oat << " failed with dex-file=" << dex_filename;
659 return false;
jeffhao262bf462011-10-20 18:36:32 -0700660 }
661 }
Brian Carlstromd601af82012-01-06 10:15:19 -0800662 return true;
jeffhao262bf462011-10-20 18:36:32 -0700663}
664
Brian Carlstrom866c8622012-01-06 16:35:13 -0800665void ClassLinker::RegisterOatFile(const OatFile& oat_file) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700666 WriterMutexLock mu(Thread::Current(), dex_lock_);
Brian Carlstrom866c8622012-01-06 16:35:13 -0800667 RegisterOatFileLocked(oat_file);
668}
669
670void ClassLinker::RegisterOatFileLocked(const OatFile& oat_file) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700671 dex_lock_.AssertExclusiveHeld(Thread::Current());
672 if (kIsDebugBuild) {
673 for (size_t i = 0; i < oat_files_.size(); ++i) {
674 CHECK_NE(&oat_file, oat_files_[i]) << oat_file.GetLocation();
675 }
Ian Rogers2bcb4a42012-11-08 10:39:18 -0800676 }
Brian Carlstrom866c8622012-01-06 16:35:13 -0800677 oat_files_.push_back(&oat_file);
678}
679
Brian Carlstrom56d947f2013-07-15 13:14:23 -0700680OatFile& ClassLinker::GetImageOatFile(gc::space::ImageSpace* space) {
681 VLOG(startup) << "ClassLinker::GetImageOatFile entering";
682 OatFile& oat_file = space->ReleaseOatFile();
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700683 WriterMutexLock mu(Thread::Current(), dex_lock_);
Brian Carlstrom56d947f2013-07-15 13:14:23 -0700684 RegisterOatFileLocked(oat_file);
685 VLOG(startup) << "ClassLinker::GetImageOatFile exiting";
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700686 return oat_file;
687}
688
Brian Carlstromae826982011-11-09 01:33:42 -0800689const OatFile* ClassLinker::FindOpenedOatFileForDexFile(const DexFile& dex_file) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700690 ReaderMutexLock mu(Thread::Current(), dex_lock_);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800691 return FindOpenedOatFileFromDexLocation(dex_file.GetLocation());
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800692}
693
Brian Carlstroma004aa92012-02-08 18:05:09 -0800694const OatFile* ClassLinker::FindOpenedOatFileFromDexLocation(const std::string& dex_location) {
Brian Carlstromae826982011-11-09 01:33:42 -0800695 for (size_t i = 0; i < oat_files_.size(); i++) {
696 const OatFile* oat_file = oat_files_[i];
697 DCHECK(oat_file != NULL);
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800698 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_location, false);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800699 if (oat_dex_file != NULL) {
Brian Carlstromae826982011-11-09 01:33:42 -0800700 return oat_file;
701 }
702 }
703 return NULL;
704}
705
Ian Rogerse3359f72013-06-11 15:14:11 -0700706const DexFile* ClassLinker::FindDexFileInOatLocation(const std::string& dex_location,
707 uint32_t dex_location_checksum,
708 const std::string& oat_location) {
Brian Carlstromf1d34552013-07-12 20:22:23 -0700709 UniquePtr<OatFile> oat_file(OatFile::Open(oat_location, oat_location, NULL,
710 !Runtime::Current()->IsCompiler()));
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800711 if (oat_file.get() == NULL) {
712 return NULL;
713 }
Brian Carlstrom81f3ca12012-03-17 00:27:35 -0700714 Runtime* runtime = Runtime::Current();
715 const ImageHeader& image_header = runtime->GetHeap()->GetImageSpace()->GetImageHeader();
Brian Carlstrom28db0122012-10-18 16:20:41 -0700716 if (oat_file->GetOatHeader().GetImageFileLocationOatChecksum() != image_header.GetOatChecksum()) {
717 return NULL;
718 }
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800719 if (oat_file->GetOatHeader().GetImageFileLocationOatDataBegin()
720 != reinterpret_cast<uint32_t>(image_header.GetOatDataBegin())) {
Brian Carlstrom81f3ca12012-03-17 00:27:35 -0700721 return NULL;
722 }
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800723 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_location);
724 if (oat_dex_file == NULL) {
725 return NULL;
726 }
727 if (oat_dex_file->GetDexFileLocationChecksum() != dex_location_checksum) {
728 return NULL;
729 }
Ian Rogerse3359f72013-06-11 15:14:11 -0700730 RegisterOatFileLocked(*oat_file.release());
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800731 return oat_dex_file->OpenDexFile();
732}
733
734const DexFile* ClassLinker::FindOrCreateOatFileForDexLocation(const std::string& dex_location,
735 const std::string& oat_location) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700736 WriterMutexLock mu(Thread::Current(), dex_lock_);
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700737 return FindOrCreateOatFileForDexLocationLocked(dex_location, oat_location);
738}
739
740const DexFile* ClassLinker::FindOrCreateOatFileForDexLocationLocked(const std::string& dex_location,
741 const std::string& oat_location) {
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800742 uint32_t dex_location_checksum;
743 if (!DexFile::GetChecksum(dex_location, dex_location_checksum)) {
744 LOG(ERROR) << "Failed to compute checksum '" << dex_location << "'";
745 return NULL;
746 }
747
748 // Check if we already have an up-to-date output file
749 const DexFile* dex_file = FindDexFileInOatLocation(dex_location,
750 dex_location_checksum,
751 oat_location);
752 if (dex_file != NULL) {
753 return dex_file;
754 }
755
756 // Generate the output oat file for the dex file
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800757 UniquePtr<File> file(OS::OpenFile(oat_location.c_str(), true));
758 if (file.get() == NULL) {
759 LOG(ERROR) << "Failed to create oat file: " << oat_location;
760 return NULL;
761 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700762 if (!GenerateOatFile(dex_location, file->Fd(), oat_location)) {
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800763 LOG(ERROR) << "Failed to generate oat file: " << oat_location;
764 return NULL;
765 }
Brian Carlstromf1d34552013-07-12 20:22:23 -0700766 const OatFile* oat_file = OatFile::Open(oat_location, oat_location, NULL,
767 !Runtime::Current()->IsCompiler());
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800768 if (oat_file == NULL) {
769 LOG(ERROR) << "Failed to open generated oat file: " << oat_location;
770 return NULL;
771 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700772 RegisterOatFileLocked(*oat_file);
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800773 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_location);
774 if (oat_dex_file == NULL) {
775 LOG(ERROR) << "Failed to find dex file in generated oat file: " << oat_location;
776 return NULL;
777 }
778 return oat_dex_file->OpenDexFile();
779}
780
Brian Carlstromafe25512012-06-27 17:02:58 -0700781bool ClassLinker::VerifyOatFileChecksums(const OatFile* oat_file,
782 const std::string& dex_location,
783 uint32_t dex_location_checksum) {
784 Runtime* runtime = Runtime::Current();
785 const ImageHeader& image_header = runtime->GetHeap()->GetImageSpace()->GetImageHeader();
Brian Carlstrom28db0122012-10-18 16:20:41 -0700786 uint32_t image_oat_checksum = image_header.GetOatChecksum();
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800787 uint32_t image_oat_data_begin = reinterpret_cast<uint32_t>(image_header.GetOatDataBegin());
Brian Carlstrom28db0122012-10-18 16:20:41 -0700788 bool image_check = ((oat_file->GetOatHeader().GetImageFileLocationOatChecksum() == image_oat_checksum)
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800789 && (oat_file->GetOatHeader().GetImageFileLocationOatDataBegin() == image_oat_data_begin));
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700790
Brian Carlstromafe25512012-06-27 17:02:58 -0700791 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_location);
792 if (oat_dex_file == NULL) {
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700793 LOG(ERROR) << "oat file " << oat_file->GetLocation()
Brian Carlstromafe25512012-06-27 17:02:58 -0700794 << " does not contain contents for " << dex_location;
795 std::vector<const OatFile::OatDexFile*> oat_dex_files = oat_file->GetOatDexFiles();
796 for (size_t i = 0; i < oat_dex_files.size(); i++) {
797 const OatFile::OatDexFile* oat_dex_file = oat_dex_files[i];
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700798 LOG(ERROR) << "oat file " << oat_file->GetLocation()
Brian Carlstromafe25512012-06-27 17:02:58 -0700799 << " contains contents for " << oat_dex_file->GetDexFileLocation();
800 }
801 return false;
802 }
Brian Carlstrom28db0122012-10-18 16:20:41 -0700803 bool dex_check = dex_location_checksum == oat_dex_file->GetDexFileLocationChecksum();
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700804
Brian Carlstromafe25512012-06-27 17:02:58 -0700805 if (image_check && dex_check) {
806 return true;
807 }
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700808
Brian Carlstromafe25512012-06-27 17:02:58 -0700809 if (!image_check) {
810 std::string image_file(image_header.GetImageRoot(
811 ImageHeader::kOatLocation)->AsString()->ToModifiedUtf8());
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700812 LOG(WARNING) << "oat file " << oat_file->GetLocation()
Brian Carlstrom28db0122012-10-18 16:20:41 -0700813 << " mismatch ( " << std::hex << oat_file->GetOatHeader().GetImageFileLocationOatChecksum()
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800814 << ", " << oat_file->GetOatHeader().GetImageFileLocationOatDataBegin()
Brian Carlstrom28db0122012-10-18 16:20:41 -0700815 << ") with " << image_file
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800816 << " (" << image_oat_checksum << ", " << std::hex << image_oat_data_begin << ")";
Brian Carlstromafe25512012-06-27 17:02:58 -0700817 }
818 if (!dex_check) {
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700819 LOG(WARNING) << "oat file " << oat_file->GetLocation()
Brian Carlstrom28db0122012-10-18 16:20:41 -0700820 << " mismatch ( " << std::hex << oat_dex_file->GetDexFileLocationChecksum()
821 << ") with " << dex_location
Brian Carlstromafe25512012-06-27 17:02:58 -0700822 << " (" << std::hex << dex_location_checksum << ")";
823 }
824 return false;
825}
826
827const DexFile* ClassLinker::VerifyAndOpenDexFileFromOatFile(const OatFile* oat_file,
828 const std::string& dex_location,
829 uint32_t dex_location_checksum) {
830 bool verified = VerifyOatFileChecksums(oat_file, dex_location, dex_location_checksum);
831 if (!verified) {
832 return NULL;
833 }
834 RegisterOatFileLocked(*oat_file);
835 return oat_file->GetOatDexFile(dex_location)->OpenDexFile();
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700836}
837
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800838const DexFile* ClassLinker::FindDexFileInOatFileFromDexLocation(const std::string& dex_location) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700839 WriterMutexLock mu(Thread::Current(), dex_lock_);
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800840
Brian Carlstroma004aa92012-02-08 18:05:09 -0800841 const OatFile* open_oat_file = FindOpenedOatFileFromDexLocation(dex_location);
Brian Carlstrom866c8622012-01-06 16:35:13 -0800842 if (open_oat_file != NULL) {
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800843 return open_oat_file->GetOatDexFile(dex_location)->OpenDexFile();
Brian Carlstromae826982011-11-09 01:33:42 -0800844 }
845
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700846 // Look for an existing file next to dex. for example, for
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700847 // /foo/bar/baz.jar, look for /foo/bar/baz.odex.
848 std::string odex_filename(OatFile::DexFilenameToOdexFilename(dex_location));
849 const OatFile* oat_file = FindOatFileFromOatLocationLocked(odex_filename);
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800850 if (oat_file != NULL) {
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700851 uint32_t dex_location_checksum;
852 if (!DexFile::GetChecksum(dex_location, dex_location_checksum)) {
853 // If no classes.dex found in dex_location, it has been stripped, assume oat is up-to-date.
854 // This is the common case in user builds for jar's and apk's in the /system directory.
855 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_location);
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700856 CHECK(oat_dex_file != NULL) << odex_filename << " " << dex_location;
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700857 RegisterOatFileLocked(*oat_file);
858 return oat_dex_file->OpenDexFile();
859 }
Brian Carlstromafe25512012-06-27 17:02:58 -0700860 const DexFile* dex_file = VerifyAndOpenDexFileFromOatFile(oat_file,
861 dex_location,
862 dex_location_checksum);
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700863 if (dex_file != NULL) {
864 return dex_file;
865 }
Brian Carlstroma004aa92012-02-08 18:05:09 -0800866 }
Brian Carlstrom7675e162013-06-10 16:18:04 -0700867 // Look for an existing file in the dalvik-cache, validating the result if found
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700868 // not found in /foo/bar/baz.odex? try /data/dalvik-cache/foo@bar@baz.jar@classes.dex
869 std::string cache_location(GetDalvikCacheFilenameOrDie(dex_location));
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700870 oat_file = FindOatFileFromOatLocationLocked(cache_location);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800871 if (oat_file != NULL) {
872 uint32_t dex_location_checksum;
873 if (!DexFile::GetChecksum(dex_location, dex_location_checksum)) {
874 LOG(WARNING) << "Failed to compute checksum: " << dex_location;
875 return NULL;
876 }
Brian Carlstromafe25512012-06-27 17:02:58 -0700877 const DexFile* dex_file = VerifyAndOpenDexFileFromOatFile(oat_file,
878 dex_location,
879 dex_location_checksum);
Brian Carlstrom46b8a622012-06-19 23:13:22 -0700880 if (dex_file != NULL) {
881 return dex_file;
Brian Carlstrom81f3ca12012-03-17 00:27:35 -0700882 }
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800883 if (TEMP_FAILURE_RETRY(unlink(oat_file->GetLocation().c_str())) != 0) {
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700884 PLOG(FATAL) << "Failed to remove obsolete oat file " << oat_file->GetLocation();
Brian Carlstromd601af82012-01-06 10:15:19 -0800885 }
jeffhao262bf462011-10-20 18:36:32 -0700886 }
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700887 LOG(INFO) << "Failed to open oat file from " << odex_filename << " or " << cache_location << ".";
Brian Carlstroma004aa92012-02-08 18:05:09 -0800888
Brian Carlstrom5b332c82012-02-01 15:02:31 -0800889 // Try to generate oat file if it wasn't found or was obsolete.
Brian Carlstrom30e2ea42013-06-19 23:25:37 -0700890 std::string oat_cache_filename(GetDalvikCacheFilenameOrDie(dex_location));
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700891 return FindOrCreateOatFileForDexLocationLocked(dex_location, oat_cache_filename);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700892}
893
Brian Carlstromae826982011-11-09 01:33:42 -0800894const OatFile* ClassLinker::FindOpenedOatFileFromOatLocation(const std::string& oat_location) {
Brian Carlstromaded5f72011-10-07 17:15:04 -0700895 for (size_t i = 0; i < oat_files_.size(); i++) {
896 const OatFile* oat_file = oat_files_[i];
897 DCHECK(oat_file != NULL);
Brian Carlstromae826982011-11-09 01:33:42 -0800898 if (oat_file->GetLocation() == oat_location) {
Brian Carlstromaded5f72011-10-07 17:15:04 -0700899 return oat_file;
900 }
901 }
Brian Carlstromfad71432011-10-16 20:25:10 -0700902 return NULL;
903}
Brian Carlstromaded5f72011-10-07 17:15:04 -0700904
Brian Carlstromae826982011-11-09 01:33:42 -0800905const OatFile* ClassLinker::FindOatFileFromOatLocation(const std::string& oat_location) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -0700906 ReaderMutexLock mu(Thread::Current(), dex_lock_);
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700907 return FindOatFileFromOatLocationLocked(oat_location);
908}
909
910const OatFile* ClassLinker::FindOatFileFromOatLocationLocked(const std::string& oat_location) {
jeffhaof6174e82012-01-31 16:14:17 -0800911 const OatFile* oat_file = FindOpenedOatFileFromOatLocation(oat_location);
912 if (oat_file != NULL) {
913 return oat_file;
914 }
915
Brian Carlstromf1d34552013-07-12 20:22:23 -0700916 oat_file = OatFile::Open(oat_location, oat_location, NULL, !Runtime::Current()->IsCompiler());
Brian Carlstromaded5f72011-10-07 17:15:04 -0700917 if (oat_file == NULL) {
Brian Carlstroma004aa92012-02-08 18:05:09 -0800918 return NULL;
Brian Carlstromaded5f72011-10-07 17:15:04 -0700919 }
920 return oat_file;
921}
922
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700923void ClassLinker::InitFromImage() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800924 VLOG(startup) << "ClassLinker::InitFromImage entering";
Brian Carlstroma663ea52011-08-19 23:33:41 -0700925 CHECK(!init_done_);
926
Ian Rogers1d54e732013-05-02 21:10:01 -0700927 gc::Heap* heap = Runtime::Current()->GetHeap();
928 gc::space::ImageSpace* space = heap->GetImageSpace();
Brian Carlstrom56d947f2013-07-15 13:14:23 -0700929 CHECK(space != NULL);
930 OatFile& oat_file = GetImageOatFile(space);
931 CHECK_EQ(oat_file.GetOatHeader().GetImageFileLocationOatChecksum(), 0U);
932 CHECK_EQ(oat_file.GetOatHeader().GetImageFileLocationOatDataBegin(), 0U);
933 CHECK(oat_file.GetOatHeader().GetImageFileLocation().empty());
934 portable_resolution_trampoline_ = oat_file.GetOatHeader().GetPortableResolutionTrampoline();
935 quick_resolution_trampoline_ = oat_file.GetOatHeader().GetQuickResolutionTrampoline();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800936 mirror::Object* dex_caches_object = space->GetImageHeader().GetImageRoot(ImageHeader::kDexCaches);
937 mirror::ObjectArray<mirror::DexCache>* dex_caches =
938 dex_caches_object->AsObjectArray<mirror::DexCache>();
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700939
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800940 mirror::ObjectArray<mirror::Class>* class_roots =
941 space->GetImageHeader().GetImageRoot(ImageHeader::kClassRoots)->AsObjectArray<mirror::Class>();
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -0700942 class_roots_ = class_roots;
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700943
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700944 // Special case of setting up the String class early so that we can test arbitrary objects
945 // as being Strings or not
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -0700946 mirror::String::SetClass(GetClassRoot(kJavaLangString));
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800947
Brian Carlstrom56d947f2013-07-15 13:14:23 -0700948 CHECK_EQ(oat_file.GetOatHeader().GetDexFileCount(),
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700949 static_cast<uint32_t>(dex_caches->GetLength()));
Ian Rogers1f539342012-10-03 21:09:42 -0700950 Thread* self = Thread::Current();
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700951 for (int i = 0; i < dex_caches->GetLength(); i++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800952 SirtRef<mirror::DexCache> dex_cache(self, dex_caches->Get(i));
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700953 const std::string& dex_file_location(dex_cache->GetLocation()->ToModifiedUtf8());
Brian Carlstrom56d947f2013-07-15 13:14:23 -0700954 const OatFile::OatDexFile* oat_dex_file = oat_file.GetOatDexFile(dex_file_location);
955 CHECK(oat_dex_file != NULL) << oat_file.GetLocation() << " " << dex_file_location;
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700956 const DexFile* dex_file = oat_dex_file->OpenDexFile();
957 if (dex_file == NULL) {
958 LOG(FATAL) << "Failed to open dex file " << dex_file_location
Brian Carlstrom56d947f2013-07-15 13:14:23 -0700959 << " from within oat file " << oat_file.GetLocation();
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700960 }
Brian Carlstromfddf6f62012-03-15 16:56:45 -0700961
962 CHECK_EQ(dex_file->GetLocationChecksum(), oat_dex_file->GetDexFileLocationChecksum());
963
964 AppendToBootClassPath(*dex_file, dex_cache);
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700965 }
966
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -0700967 // Set classes on AbstractMethod early so that IsMethod tests can be performed during the live
968 // bitmap walk.
969 mirror::AbstractMethod::SetClasses(GetClassRoot(kJavaLangReflectConstructor),
970 GetClassRoot(kJavaLangReflectMethod));
971
Brian Carlstroma663ea52011-08-19 23:33:41 -0700972 // reinit clases_ table
Mathieu Chartier357e9be2012-08-01 11:00:14 -0700973 {
Ian Rogers50b35e22012-10-04 10:09:15 -0700974 ReaderMutexLock mu(self, *Locks::heap_bitmap_lock_);
Mathieu Chartier357e9be2012-08-01 11:00:14 -0700975 heap->FlushAllocStack();
Mathieu Chartiere0f0cb32012-08-28 11:26:00 -0700976 heap->GetLiveBitmap()->Walk(InitFromImageCallback, this);
Mathieu Chartierb062fdd2012-07-03 09:51:48 -0700977 }
Brian Carlstroma663ea52011-08-19 23:33:41 -0700978
979 // reinit class_roots_
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800980 mirror::Class::SetClassClass(class_roots->Get(kJavaLangClass));
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700981 class_roots_ = class_roots;
Brian Carlstroma663ea52011-08-19 23:33:41 -0700982
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800983 // reinit array_iftable_ from any array class instance, they should be ==
Elliott Hughes92f14b22011-10-06 12:29:54 -0700984 array_iftable_ = GetClassRoot(kObjectArrayClass)->GetIfTable();
985 DCHECK(array_iftable_ == GetClassRoot(kBooleanArrayClass)->GetIfTable());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800986 // String class root was set above
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800987 mirror::Field::SetClass(GetClassRoot(kJavaLangReflectField));
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800988 mirror::BooleanArray::SetArrayClass(GetClassRoot(kBooleanArrayClass));
989 mirror::ByteArray::SetArrayClass(GetClassRoot(kByteArrayClass));
990 mirror::CharArray::SetArrayClass(GetClassRoot(kCharArrayClass));
991 mirror::DoubleArray::SetArrayClass(GetClassRoot(kDoubleArrayClass));
992 mirror::FloatArray::SetArrayClass(GetClassRoot(kFloatArrayClass));
993 mirror::IntArray::SetArrayClass(GetClassRoot(kIntArrayClass));
994 mirror::LongArray::SetArrayClass(GetClassRoot(kLongArrayClass));
995 mirror::ShortArray::SetArrayClass(GetClassRoot(kShortArrayClass));
996 mirror::Throwable::SetClass(GetClassRoot(kJavaLangThrowable));
997 mirror::StackTraceElement::SetClass(GetClassRoot(kJavaLangStackTraceElement));
Brian Carlstroma663ea52011-08-19 23:33:41 -0700998
999 FinishInit();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -07001000
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -08001001 VLOG(startup) << "ClassLinker::InitFromImage exiting";
Brian Carlstroma663ea52011-08-19 23:33:41 -07001002}
1003
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001004void ClassLinker::InitFromImageCallback(mirror::Object* obj, void* arg) {
Brian Carlstroma663ea52011-08-19 23:33:41 -07001005 DCHECK(obj != NULL);
1006 DCHECK(arg != NULL);
Brian Carlstrom34f426c2011-10-04 12:58:02 -07001007 ClassLinker* class_linker = reinterpret_cast<ClassLinker*>(arg);
Brian Carlstroma663ea52011-08-19 23:33:41 -07001008
Elliott Hughesdbb40792011-11-18 17:05:22 -08001009 if (obj->GetClass()->IsStringClass()) {
Brian Carlstrom34f426c2011-10-04 12:58:02 -07001010 class_linker->intern_table_->RegisterStrong(obj->AsString());
Brian Carlstromc74255f2011-09-11 22:47:39 -07001011 return;
1012 }
Brian Carlstromaded5f72011-10-07 17:15:04 -07001013 if (obj->IsClass()) {
1014 // restore class to ClassLinker::classes_ table
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001015 mirror::Class* klass = obj->AsClass();
Elliott Hughesc3b77c72011-12-15 20:56:48 -08001016 ClassHelper kh(klass, class_linker);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001017 mirror::Class* existing = class_linker->InsertClass(kh.GetDescriptor(), klass, true);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08001018 DCHECK(existing == NULL) << kh.GetDescriptor();
Brian Carlstroma663ea52011-08-19 23:33:41 -07001019 return;
1020 }
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -07001021
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -07001022 if (obj->IsMethod()) {
1023 mirror::AbstractMethod* method = obj->AsMethod();
Jeff Hao8df6cea2013-07-29 13:54:48 -07001024 // Set entry points to interpreter for methods in interpreter only mode.
Jeff Hao0aba0ba2013-06-03 14:49:28 -07001025 if (Runtime::Current()->GetInstrumentation()->InterpretOnly() && !method->IsNative()) {
1026 method->SetEntryPointFromInterpreter(interpreter::artInterpreterToInterpreterEntry);
Jeff Haodd75d5d2013-06-07 16:43:14 -07001027 if (method != Runtime::Current()->GetResolutionMethod()) {
1028 method->SetEntryPointFromCompiledCode(GetInterpreterEntryPoint());
1029 }
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -07001030 }
Jeff Hao8df6cea2013-07-29 13:54:48 -07001031 // Populate native method pointer with jni lookup stub.
1032 if (method->IsNative()) {
1033 method->UnregisterNative(Thread::Current());
1034 }
Anwar Ghuloumc4f105d2013-04-10 16:12:11 -07001035 }
Brian Carlstroma663ea52011-08-19 23:33:41 -07001036}
1037
1038// Keep in sync with InitCallback. Anything we visit, we need to
1039// reinit references to when reinitializing a ClassLinker from a
1040// mapped image.
Ian Rogers1d54e732013-05-02 21:10:01 -07001041void ClassLinker::VisitRoots(RootVisitor* visitor, void* arg, bool clean_dirty) {
Elliott Hughes410c0c82011-09-01 17:58:25 -07001042 visitor(class_roots_, arg);
Ian Rogers50b35e22012-10-04 10:09:15 -07001043 Thread* self = Thread::Current();
Elliott Hughesf8349362012-06-18 15:00:06 -07001044 {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001045 ReaderMutexLock mu(self, dex_lock_);
Elliott Hughesf8349362012-06-18 15:00:06 -07001046 for (size_t i = 0; i < dex_caches_.size(); i++) {
1047 visitor(dex_caches_[i], arg);
1048 }
Brian Carlstrom75cb3b42011-07-28 02:13:36 -07001049 }
1050
Brian Carlstrom7e93b502011-08-04 14:16:22 -07001051 {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001052 ReaderMutexLock mu(self, *Locks::classlinker_classes_lock_);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001053 typedef Table::const_iterator It; // TODO: C++0x auto
Brian Carlstrom7e93b502011-08-04 14:16:22 -07001054 for (It it = classes_.begin(), end = classes_.end(); it != end; ++it) {
Elliott Hughes410c0c82011-09-01 17:58:25 -07001055 visitor(it->second, arg);
Brian Carlstrom7e93b502011-08-04 14:16:22 -07001056 }
Mathieu Chartier262e5ff2012-06-01 17:35:38 -07001057
1058 // We deliberately ignore the class roots in the image since we
1059 // handle image roots by using the MS/CMS rescanning of dirty cards.
Brian Carlstrom75cb3b42011-07-28 02:13:36 -07001060 }
Brian Carlstrom7e93b502011-08-04 14:16:22 -07001061
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001062 visitor(array_iftable_, arg);
Ian Rogers1d54e732013-05-02 21:10:01 -07001063 if (clean_dirty) {
1064 is_dirty_ = false;
1065 }
Brian Carlstrom578bbdc2011-07-21 14:07:47 -07001066}
1067
Elliott Hughesa2155262011-11-16 16:26:58 -08001068void ClassLinker::VisitClasses(ClassVisitor* visitor, void* arg) const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001069 ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Elliott Hughesa2155262011-11-16 16:26:58 -08001070 typedef Table::const_iterator It; // TODO: C++0x auto
1071 for (It it = classes_.begin(), end = classes_.end(); it != end; ++it) {
1072 if (!visitor(it->second, arg)) {
1073 return;
1074 }
1075 }
1076 for (It it = image_classes_.begin(), end = image_classes_.end(); it != end; ++it) {
1077 if (!visitor(it->second, arg)) {
1078 return;
1079 }
1080 }
1081}
1082
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001083static bool GetClassesVisitor(mirror::Class* c, void* arg) {
1084 std::set<mirror::Class*>* classes = reinterpret_cast<std::set<mirror::Class*>*>(arg);
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001085 classes->insert(c);
1086 return true;
1087}
1088
1089void ClassLinker::VisitClassesWithoutClassesLock(ClassVisitor* visitor, void* arg) const {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001090 std::set<mirror::Class*> classes;
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001091 VisitClasses(GetClassesVisitor, &classes);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001092 typedef std::set<mirror::Class*>::const_iterator It; // TODO: C++0x auto
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001093 for (It it = classes.begin(), end = classes.end(); it != end; ++it) {
1094 if (!visitor(*it, arg)) {
1095 return;
1096 }
1097 }
1098}
1099
1100
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07001101ClassLinker::~ClassLinker() {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001102 mirror::Class::ResetClass();
1103 mirror::String::ResetClass();
1104 mirror::Field::ResetClass();
1105 mirror::AbstractMethod::ResetClasses();
1106 mirror::BooleanArray::ResetArrayClass();
1107 mirror::ByteArray::ResetArrayClass();
1108 mirror::CharArray::ResetArrayClass();
1109 mirror::DoubleArray::ResetArrayClass();
1110 mirror::FloatArray::ResetArrayClass();
1111 mirror::IntArray::ResetArrayClass();
1112 mirror::LongArray::ResetArrayClass();
1113 mirror::ShortArray::ResetArrayClass();
1114 mirror::Throwable::ResetClass();
1115 mirror::StackTraceElement::ResetClass();
Brian Carlstrom58ae9412011-10-04 00:56:06 -07001116 STLDeleteElements(&boot_class_path_);
1117 STLDeleteElements(&oat_files_);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07001118}
1119
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001120mirror::DexCache* ClassLinker::AllocDexCache(Thread* self, const DexFile& dex_file) {
Ian Rogers1d54e732013-05-02 21:10:01 -07001121 gc::Heap* heap = Runtime::Current()->GetHeap();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001122 mirror::Class* dex_cache_class = GetClassRoot(kJavaLangDexCache);
1123 SirtRef<mirror::DexCache> dex_cache(self,
1124 down_cast<mirror::DexCache*>(heap->AllocObject(self, dex_cache_class,
1125 dex_cache_class->GetObjectSize())));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001126 if (dex_cache.get() == NULL) {
Elliott Hughes30646832011-10-13 16:59:46 -07001127 return NULL;
1128 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001129 SirtRef<mirror::String>
1130 location(self, intern_table_->InternStrong(dex_file.GetLocation().c_str()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001131 if (location.get() == NULL) {
Elliott Hughes30646832011-10-13 16:59:46 -07001132 return NULL;
1133 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001134 SirtRef<mirror::ObjectArray<mirror::String> >
1135 strings(self, AllocStringArray(self, dex_file.NumStringIds()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001136 if (strings.get() == NULL) {
1137 return NULL;
1138 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001139 SirtRef<mirror::ObjectArray<mirror::Class> >
1140 types(self, AllocClassArray(self, dex_file.NumTypeIds()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001141 if (types.get() == NULL) {
1142 return NULL;
1143 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001144 SirtRef<mirror::ObjectArray<mirror::AbstractMethod> >
Ian Rogers4445a7e2012-10-05 17:19:13 -07001145 methods(self, AllocAbstractMethodArray(self, dex_file.NumMethodIds()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001146 if (methods.get() == NULL) {
1147 return NULL;
1148 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001149 SirtRef<mirror::ObjectArray<mirror::Field> >
1150 fields(self, AllocFieldArray(self, dex_file.NumFieldIds()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001151 if (fields.get() == NULL) {
1152 return NULL;
1153 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001154 SirtRef<mirror::ObjectArray<mirror::StaticStorageBase> >
Ian Rogers50b35e22012-10-04 10:09:15 -07001155 initialized_static_storage(self,
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001156 AllocObjectArray<mirror::StaticStorageBase>(self, dex_file.NumTypeIds()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001157 if (initialized_static_storage.get() == NULL) {
1158 return NULL;
1159 }
1160
Mathieu Chartier66f19252012-09-18 08:57:04 -07001161 dex_cache->Init(&dex_file,
1162 location.get(),
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001163 strings.get(),
1164 types.get(),
1165 methods.get(),
1166 fields.get(),
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001167 initialized_static_storage.get());
1168 return dex_cache.get();
Brian Carlstroma0808032011-07-18 00:39:23 -07001169}
1170
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001171mirror::Class* ClassLinker::AllocClass(Thread* self, mirror::Class* java_lang_Class,
1172 size_t class_size) {
1173 DCHECK_GE(class_size, sizeof(mirror::Class));
Ian Rogers1d54e732013-05-02 21:10:01 -07001174 gc::Heap* heap = Runtime::Current()->GetHeap();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001175 SirtRef<mirror::Class> klass(self,
Ian Rogers50b35e22012-10-04 10:09:15 -07001176 heap->AllocObject(self, java_lang_Class, class_size)->AsClass());
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07001177 klass->SetPrimitiveType(Primitive::kPrimNot); // default to not being primitive
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001178 klass->SetClassSize(class_size);
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001179 return klass.get();
Brian Carlstrom75cb3b42011-07-28 02:13:36 -07001180}
1181
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001182mirror::Class* ClassLinker::AllocClass(Thread* self, size_t class_size) {
Ian Rogers50b35e22012-10-04 10:09:15 -07001183 return AllocClass(self, GetClassRoot(kJavaLangClass), class_size);
Brian Carlstroma0808032011-07-18 00:39:23 -07001184}
1185
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001186mirror::Field* ClassLinker::AllocField(Thread* self) {
1187 return down_cast<mirror::Field*>(GetClassRoot(kJavaLangReflectField)->AllocObject(self));
Brian Carlstroma0808032011-07-18 00:39:23 -07001188}
1189
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001190mirror::Method* ClassLinker::AllocMethod(Thread* self) {
1191 return down_cast<mirror::Method*>(GetClassRoot(kJavaLangReflectMethod)->AllocObject(self));
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001192}
1193
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001194mirror::Constructor* ClassLinker::AllocConstructor(Thread* self) {
1195 return down_cast<mirror::Constructor*>(GetClassRoot(kJavaLangReflectConstructor)->AllocObject(self));
Mathieu Chartier66f19252012-09-18 08:57:04 -07001196}
1197
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001198mirror::ObjectArray<mirror::StackTraceElement>* ClassLinker::AllocStackTraceElementArray(Thread* self,
1199 size_t length) {
1200 return mirror::ObjectArray<mirror::StackTraceElement>::Alloc(self,
1201 GetClassRoot(kJavaLangStackTraceElementArrayClass),
1202 length);
Shih-wei Liao55df06b2011-08-26 14:39:27 -07001203}
1204
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001205static mirror::Class* EnsureResolved(Thread* self, mirror::Class* klass)
Ian Rogersb726dcb2012-09-05 08:57:23 -07001206 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Brian Carlstromaded5f72011-10-07 17:15:04 -07001207 DCHECK(klass != NULL);
1208 // Wait for the class if it has not already been linked.
Elliott Hughes5fe594f2011-09-08 12:33:17 -07001209 if (!klass->IsResolved() && !klass->IsErroneous()) {
Ian Rogers1f539342012-10-03 21:09:42 -07001210 ObjectLock lock(self, klass);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001211 // Check for circular dependencies between classes.
Elliott Hughes5fe594f2011-09-08 12:33:17 -07001212 if (!klass->IsResolved() && klass->GetClinitThreadId() == self->GetTid()) {
Ian Rogers62d6c772013-02-27 08:32:07 -08001213 ThrowClassCircularityError(klass);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001214 klass->SetStatus(mirror::Class::kStatusError);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001215 return NULL;
1216 }
1217 // Wait for the pending initialization to complete.
Elliott Hughes5fe594f2011-09-08 12:33:17 -07001218 while (!klass->IsResolved() && !klass->IsErroneous()) {
Ian Rogers05f30572013-02-20 12:13:11 -08001219 lock.WaitIgnoringInterrupts();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001220 }
1221 }
1222 if (klass->IsErroneous()) {
Elliott Hughes4a2b4172011-09-20 17:08:25 -07001223 ThrowEarlierClassFailure(klass);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001224 return NULL;
1225 }
1226 // Return the loaded class. No exceptions should be pending.
Brian Carlstromaded5f72011-10-07 17:15:04 -07001227 CHECK(klass->IsResolved()) << PrettyClass(klass);
Ian Rogers62d6c772013-02-27 08:32:07 -08001228 self->AssertNoPendingException();
Brian Carlstromaded5f72011-10-07 17:15:04 -07001229 return klass;
1230}
1231
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001232mirror::Class* ClassLinker::FindSystemClass(const char* descriptor) {
Elliott Hughesdb7d5e92011-12-16 18:47:37 -08001233 return FindClass(descriptor, NULL);
1234}
1235
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001236mirror::Class* ClassLinker::FindClass(const char* descriptor, mirror::ClassLoader* class_loader) {
Elliott Hughesba8eee12012-01-24 20:25:24 -08001237 DCHECK_NE(*descriptor, '\0') << "descriptor is empty string";
Brian Carlstromaded5f72011-10-07 17:15:04 -07001238 Thread* self = Thread::Current();
1239 DCHECK(self != NULL);
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001240 self->AssertNoPendingException();
Elliott Hughesc3b77c72011-12-15 20:56:48 -08001241 if (descriptor[1] == '\0') {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001242 // only the descriptors of primitive types should be 1 character long, also avoid class lookup
1243 // for primitive classes that aren't backed by dex files.
1244 return FindPrimitiveClass(descriptor[0]);
1245 }
Brian Carlstromaded5f72011-10-07 17:15:04 -07001246 // Find the class in the loaded classes table.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001247 mirror::Class* klass = LookupClass(descriptor, class_loader);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001248 if (klass != NULL) {
Ian Rogers50b35e22012-10-04 10:09:15 -07001249 return EnsureResolved(self, klass);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001250 }
Brian Carlstromaded5f72011-10-07 17:15:04 -07001251 // Class is not yet loaded.
1252 if (descriptor[0] == '[') {
1253 return CreateArrayClass(descriptor, class_loader);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001254
Jesse Wilson47daf872011-11-23 11:42:45 -05001255 } else if (class_loader == NULL) {
1256 DexFile::ClassPathEntry pair = DexFile::FindInClassPath(descriptor, boot_class_path_);
1257 if (pair.second != NULL) {
1258 return DefineClass(descriptor, NULL, *pair.first, *pair.second);
1259 }
1260
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001261 } else if (Runtime::Current()->UseCompileTimeClassPath()) {
Jesse Wilson47daf872011-11-23 11:42:45 -05001262 // first try the boot class path
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001263 mirror::Class* system_class = FindSystemClass(descriptor);
Jesse Wilson47daf872011-11-23 11:42:45 -05001264 if (system_class != NULL) {
1265 return system_class;
1266 }
1267 CHECK(self->IsExceptionPending());
1268 self->ClearException();
1269
1270 // next try the compile time class path
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001271 const std::vector<const DexFile*>* class_path;
1272 {
1273 ScopedObjectAccessUnchecked soa(Thread::Current());
1274 ScopedLocalRef<jobject> jclass_loader(soa.Env(), soa.AddLocalReference<jobject>(class_loader));
1275 class_path = &Runtime::Current()->GetCompileTimeClassPath(jclass_loader.get());
1276 }
1277
1278 DexFile::ClassPathEntry pair = DexFile::FindInClassPath(descriptor, *class_path);
Jesse Wilson47daf872011-11-23 11:42:45 -05001279 if (pair.second != NULL) {
1280 return DefineClass(descriptor, class_loader, *pair.first, *pair.second);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001281 }
Jesse Wilson47daf872011-11-23 11:42:45 -05001282
1283 } else {
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001284 ScopedObjectAccessUnchecked soa(self->GetJniEnv());
1285 ScopedLocalRef<jobject> class_loader_object(soa.Env(),
1286 soa.AddLocalReference<jobject>(class_loader));
Elliott Hughes95572412011-12-13 18:14:20 -08001287 std::string class_name_string(DescriptorToDot(descriptor));
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001288 ScopedLocalRef<jobject> result(soa.Env(), NULL);
Ian Rogers365c1022012-06-22 15:05:28 -07001289 {
1290 ScopedThreadStateChange tsc(self, kNative);
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001291 ScopedLocalRef<jobject> class_name_object(soa.Env(),
1292 soa.Env()->NewStringUTF(class_name_string.c_str()));
Ian Rogers365c1022012-06-22 15:05:28 -07001293 if (class_name_object.get() == NULL) {
1294 return NULL;
1295 }
1296 CHECK(class_loader_object.get() != NULL);
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001297 result.reset(soa.Env()->CallObjectMethod(class_loader_object.get(),
1298 WellKnownClasses::java_lang_ClassLoader_loadClass,
1299 class_name_object.get()));
Jesse Wilson47daf872011-11-23 11:42:45 -05001300 }
Ian Rogers62d6c772013-02-27 08:32:07 -08001301 if (soa.Self()->IsExceptionPending()) {
Elliott Hughes748382f2012-01-26 18:07:38 -08001302 // If the ClassLoader threw, pass that exception up.
1303 return NULL;
Ian Rogers761bfa82012-01-11 10:14:05 -08001304 } else if (result.get() == NULL) {
Ian Rogerscab01012012-01-10 17:35:46 -08001305 // broken loader - throw NPE to be compatible with Dalvik
Ian Rogers62d6c772013-02-27 08:32:07 -08001306 ThrowNullPointerException(NULL, StringPrintf("ClassLoader.loadClass returned null for %s",
1307 class_name_string.c_str()).c_str());
Ian Rogerscab01012012-01-10 17:35:46 -08001308 return NULL;
Ian Rogers761bfa82012-01-11 10:14:05 -08001309 } else {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001310 // success, return mirror::Class*
1311 return soa.Decode<mirror::Class*>(result.get());
Ian Rogers6b0870d2011-12-15 19:38:12 -08001312 }
Brian Carlstromaded5f72011-10-07 17:15:04 -07001313 }
1314
Elliott Hughes82914b62012-04-09 15:56:29 -07001315 ThrowNoClassDefFoundError("Class %s not found", PrintableString(descriptor).c_str());
Jesse Wilson47daf872011-11-23 11:42:45 -05001316 return NULL;
Brian Carlstromaded5f72011-10-07 17:15:04 -07001317}
1318
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001319mirror::Class* ClassLinker::DefineClass(const StringPiece& descriptor,
1320 mirror::ClassLoader* class_loader,
1321 const DexFile& dex_file,
1322 const DexFile::ClassDef& dex_class_def) {
Ian Rogers1f539342012-10-03 21:09:42 -07001323 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001324 SirtRef<mirror::Class> klass(self, NULL);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001325 // Load the class from the dex file.
1326 if (!init_done_) {
1327 // finish up init of hand crafted class_roots_
1328 if (descriptor == "Ljava/lang/Object;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001329 klass.reset(GetClassRoot(kJavaLangObject));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001330 } else if (descriptor == "Ljava/lang/Class;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001331 klass.reset(GetClassRoot(kJavaLangClass));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001332 } else if (descriptor == "Ljava/lang/String;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001333 klass.reset(GetClassRoot(kJavaLangString));
Mathieu Chartier66f19252012-09-18 08:57:04 -07001334 } else if (descriptor == "Ljava/lang/DexCache;") {
1335 klass.reset(GetClassRoot(kJavaLangDexCache));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001336 } else if (descriptor == "Ljava/lang/reflect/Field;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001337 klass.reset(GetClassRoot(kJavaLangReflectField));
Mathieu Chartier66f19252012-09-18 08:57:04 -07001338 } else if (descriptor == "Ljava/lang/reflect/AbstractMethod;") {
1339 klass.reset(GetClassRoot(kJavaLangReflectAbstractMethod));
1340 } else if (descriptor == "Ljava/lang/reflect/Constructor;") {
1341 klass.reset(GetClassRoot(kJavaLangReflectConstructor));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001342 } else if (descriptor == "Ljava/lang/reflect/Method;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001343 klass.reset(GetClassRoot(kJavaLangReflectMethod));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001344 } else {
Ian Rogers50b35e22012-10-04 10:09:15 -07001345 klass.reset(AllocClass(self, SizeOfClass(dex_file, dex_class_def)));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001346 }
1347 } else {
Ian Rogers50b35e22012-10-04 10:09:15 -07001348 klass.reset(AllocClass(self, SizeOfClass(dex_file, dex_class_def)));
Brian Carlstromaded5f72011-10-07 17:15:04 -07001349 }
1350 klass->SetDexCache(FindDexCache(dex_file));
1351 LoadClass(dex_file, dex_class_def, klass, class_loader);
1352 // Check for a pending exception during load
Brian Carlstromaded5f72011-10-07 17:15:04 -07001353 if (self->IsExceptionPending()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001354 klass->SetStatus(mirror::Class::kStatusError);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001355 return NULL;
1356 }
Ian Rogers1f539342012-10-03 21:09:42 -07001357 ObjectLock lock(self, klass.get());
Brian Carlstromaded5f72011-10-07 17:15:04 -07001358 klass->SetClinitThreadId(self->GetTid());
1359 // Add the newly loaded class to the loaded classes table.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001360 SirtRef<mirror::Class> existing(self, InsertClass(descriptor, klass.get(), false));
Brian Carlstrom01e076e2012-03-30 11:54:16 -07001361 if (existing.get() != NULL) {
Brian Carlstrom07bb8552012-01-18 22:10:50 -08001362 // We failed to insert because we raced with another thread.
Ian Rogers50b35e22012-10-04 10:09:15 -07001363 return EnsureResolved(self, existing.get());
Brian Carlstromaded5f72011-10-07 17:15:04 -07001364 }
1365 // Finish loading (if necessary) by finding parents
1366 CHECK(!klass->IsLoaded());
1367 if (!LoadSuperAndInterfaces(klass, dex_file)) {
1368 // Loading failed.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001369 klass->SetStatus(mirror::Class::kStatusError);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001370 lock.NotifyAll();
1371 return NULL;
1372 }
1373 CHECK(klass->IsLoaded());
1374 // Link the class (if necessary)
1375 CHECK(!klass->IsResolved());
Ian Rogersc2b44472011-12-14 21:17:17 -08001376 if (!LinkClass(klass, NULL)) {
Brian Carlstromaded5f72011-10-07 17:15:04 -07001377 // Linking failed.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001378 klass->SetStatus(mirror::Class::kStatusError);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001379 lock.NotifyAll();
1380 return NULL;
1381 }
1382 CHECK(klass->IsResolved());
Elliott Hughes4740cdf2011-12-07 14:07:12 -08001383
1384 /*
1385 * We send CLASS_PREPARE events to the debugger from here. The
1386 * definition of "preparation" is creating the static fields for a
1387 * class and initializing them to the standard default values, but not
1388 * executing any code (that comes later, during "initialization").
1389 *
1390 * We did the static preparation in LinkClass.
1391 *
1392 * The class has been prepared and resolved but possibly not yet verified
1393 * at this point.
1394 */
1395 Dbg::PostClassPrepare(klass.get());
1396
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001397 return klass.get();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001398}
1399
Brian Carlstrom4873d462011-08-21 15:23:39 -07001400// Precomputes size that will be needed for Class, matching LinkStaticFields
1401size_t ClassLinker::SizeOfClass(const DexFile& dex_file,
1402 const DexFile::ClassDef& dex_class_def) {
1403 const byte* class_data = dex_file.GetClassData(dex_class_def);
Brian Carlstrom4873d462011-08-21 15:23:39 -07001404 size_t num_ref = 0;
1405 size_t num_32 = 0;
1406 size_t num_64 = 0;
Ian Rogers0571d352011-11-03 19:51:38 -07001407 if (class_data != NULL) {
1408 for (ClassDataItemIterator it(dex_file, class_data); it.HasNextStaticField(); it.Next()) {
1409 const DexFile::FieldId& field_id = dex_file.GetFieldId(it.GetMemberIndex());
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07001410 const char* descriptor = dex_file.GetFieldTypeDescriptor(field_id);
Brian Carlstrom4873d462011-08-21 15:23:39 -07001411 char c = descriptor[0];
1412 if (c == 'L' || c == '[') {
1413 num_ref++;
1414 } else if (c == 'J' || c == 'D') {
1415 num_64++;
1416 } else {
1417 num_32++;
1418 }
1419 }
1420 }
Brian Carlstrom4873d462011-08-21 15:23:39 -07001421 // start with generic class data
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001422 size_t size = sizeof(mirror::Class);
Brian Carlstrom4873d462011-08-21 15:23:39 -07001423 // follow with reference fields which must be contiguous at start
1424 size += (num_ref * sizeof(uint32_t));
1425 // if there are 64-bit fields to add, make sure they are aligned
Brian Carlstrom7934ac22013-07-26 10:54:15 -07001426 if (num_64 != 0 && size != RoundUp(size, 8)) { // for 64-bit alignment
Brian Carlstrom4873d462011-08-21 15:23:39 -07001427 if (num_32 != 0) {
1428 // use an available 32-bit field for padding
1429 num_32--;
1430 }
1431 size += sizeof(uint32_t); // either way, we are adding a word
1432 DCHECK_EQ(size, RoundUp(size, 8));
1433 }
1434 // tack on any 64-bit fields now that alignment is assured
1435 size += (num_64 * sizeof(uint64_t));
1436 // tack on any remaining 32-bit fields
1437 size += (num_32 * sizeof(uint32_t));
1438 return size;
1439}
1440
Ian Rogers19846512012-02-24 11:42:47 -08001441const OatFile::OatClass* ClassLinker::GetOatClass(const DexFile& dex_file, const char* descriptor) {
1442 DCHECK(descriptor != NULL);
Ian Rogers19846512012-02-24 11:42:47 -08001443 const OatFile* oat_file = FindOpenedOatFileForDexFile(dex_file);
1444 CHECK(oat_file != NULL) << dex_file.GetLocation() << " " << descriptor;
1445 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_file.GetLocation());
1446 CHECK(oat_dex_file != NULL) << dex_file.GetLocation() << " " << descriptor;
1447 uint32_t class_def_index;
1448 bool found = dex_file.FindClassDefIndex(descriptor, class_def_index);
1449 CHECK(found) << dex_file.GetLocation() << " " << descriptor;
1450 const OatFile::OatClass* oat_class = oat_dex_file->GetOatClass(class_def_index);
1451 CHECK(oat_class != NULL) << dex_file.GetLocation() << " " << descriptor;
1452 return oat_class;
1453}
1454
Mathieu Chartiere35517a2012-10-30 18:49:55 -07001455static uint32_t GetOatMethodIndexFromMethodIndex(const DexFile& dex_file, uint32_t method_idx) {
1456 const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx);
1457 const DexFile::TypeId& type_id = dex_file.GetTypeId(method_id.class_idx_);
1458 const DexFile::ClassDef* class_def = dex_file.FindClassDef(dex_file.GetTypeDescriptor(type_id));
1459 CHECK(class_def != NULL);
1460 const byte* class_data = dex_file.GetClassData(*class_def);
1461 CHECK(class_data != NULL);
1462 ClassDataItemIterator it(dex_file, class_data);
1463 // Skip fields
1464 while (it.HasNextStaticField()) {
1465 it.Next();
1466 }
1467 while (it.HasNextInstanceField()) {
1468 it.Next();
1469 }
1470 // Process methods
1471 size_t class_def_method_index = 0;
1472 while (it.HasNextDirectMethod()) {
1473 if (it.GetMemberIndex() == method_idx) {
1474 return class_def_method_index;
1475 }
1476 class_def_method_index++;
1477 it.Next();
1478 }
1479 while (it.HasNextVirtualMethod()) {
1480 if (it.GetMemberIndex() == method_idx) {
1481 return class_def_method_index;
1482 }
1483 class_def_method_index++;
1484 it.Next();
1485 }
1486 DCHECK(!it.HasNext());
1487 LOG(FATAL) << "Failed to find method index " << method_idx << " in " << dex_file.GetLocation();
1488 return 0;
1489}
1490
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001491const OatFile::OatMethod ClassLinker::GetOatMethodFor(const mirror::AbstractMethod* method) {
Ian Rogers19846512012-02-24 11:42:47 -08001492 // Although we overwrite the trampoline of non-static methods, we may get here via the resolution
Ian Rogersfb6adba2012-03-04 21:51:51 -08001493 // method for direct methods (or virtual methods made direct).
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001494 mirror::Class* declaring_class = method->GetDeclaringClass();
Ian Rogersfb6adba2012-03-04 21:51:51 -08001495 size_t oat_method_index;
1496 if (method->IsStatic() || method->IsDirect()) {
1497 // Simple case where the oat method index was stashed at load time.
1498 oat_method_index = method->GetMethodIndex();
1499 } else {
1500 // We're invoking a virtual method directly (thanks to sharpening), compute the oat_method_index
1501 // by search for its position in the declared virtual methods.
1502 oat_method_index = declaring_class->NumDirectMethods();
1503 size_t end = declaring_class->NumVirtualMethods();
1504 bool found = false;
1505 for (size_t i = 0; i < end; i++) {
Ian Rogersfb6adba2012-03-04 21:51:51 -08001506 if (declaring_class->GetVirtualMethod(i) == method) {
1507 found = true;
1508 break;
1509 }
Ian Rogersf320b632012-03-13 18:47:47 -07001510 oat_method_index++;
Ian Rogersfb6adba2012-03-04 21:51:51 -08001511 }
1512 CHECK(found) << "Didn't find oat method index for virtual method: " << PrettyMethod(method);
1513 }
1514 ClassHelper kh(declaring_class);
Ian Rogers19846512012-02-24 11:42:47 -08001515 UniquePtr<const OatFile::OatClass> oat_class(GetOatClass(kh.GetDexFile(), kh.GetDescriptor()));
Brian Carlstromf5822582012-03-19 22:34:31 -07001516 CHECK(oat_class.get() != NULL);
Mathieu Chartiere35517a2012-10-30 18:49:55 -07001517 DCHECK_EQ(oat_method_index,
1518 GetOatMethodIndexFromMethodIndex(*declaring_class->GetDexCache()->GetDexFile(),
1519 method->GetDexMethodIndex()));
1520
TDYa12785321912012-04-01 15:24:56 -07001521 return oat_class->GetOatMethod(oat_method_index);
1522}
1523
1524// Special case to get oat code without overwriting a trampoline.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001525const void* ClassLinker::GetOatCodeFor(const mirror::AbstractMethod* method) {
Ian Rogers62d6c772013-02-27 08:32:07 -08001526 CHECK(!method->IsAbstract()) << PrettyMethod(method);
Jeff Hao8df6cea2013-07-29 13:54:48 -07001527 if (method->IsProxyMethod()) {
1528#if !defined(ART_USE_PORTABLE_COMPILER)
1529 return reinterpret_cast<void*>(art_quick_proxy_invoke_handler);
1530#else
1531 return reinterpret_cast<void*>(art_portable_proxy_invoke_handler);
1532#endif
1533 }
Ian Rogersf3e98552013-03-20 15:49:49 -07001534 const void* result = GetOatMethodFor(method).GetCode();
1535 if (result == NULL) {
1536 // No code? You must mean to go into the interpreter.
1537 result = GetInterpreterEntryPoint();
1538 }
1539 return result;
TDYa12785321912012-04-01 15:24:56 -07001540}
1541
Mathieu Chartiere35517a2012-10-30 18:49:55 -07001542const void* ClassLinker::GetOatCodeFor(const DexFile& dex_file, uint32_t method_idx) {
1543 const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx);
1544 const char* descriptor = dex_file.GetTypeDescriptor(dex_file.GetTypeId(method_id.class_idx_));
1545 uint32_t oat_method_idx = GetOatMethodIndexFromMethodIndex(dex_file, method_idx);
1546 UniquePtr<const OatFile::OatClass> oat_class(GetOatClass(dex_file, descriptor));
1547 CHECK(oat_class.get() != NULL);
1548 return oat_class->GetOatMethod(oat_method_idx).GetCode();
1549}
1550
Sebastien Hertz7d658cf2013-07-09 10:56:11 +02001551// Returns true if the method must run with interpreter, false otherwise.
1552static bool NeedsInterpreter(const mirror::AbstractMethod* method, const void* code) {
1553 if (code == NULL) {
1554 // No code: need interpreter.
1555 return true;
1556 }
1557 // If interpreter mode is enabled, every method (except native and proxy) must
1558 // be run with interpreter.
1559 return Runtime::Current()->GetInstrumentation()->InterpretOnly() &&
1560 !method->IsNative() && !method->IsProxyMethod();
1561}
1562
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001563void ClassLinker::FixupStaticTrampolines(mirror::Class* klass) {
Ian Rogers19846512012-02-24 11:42:47 -08001564 ClassHelper kh(klass);
1565 const DexFile::ClassDef* dex_class_def = kh.GetClassDef();
1566 CHECK(dex_class_def != NULL);
1567 const DexFile& dex_file = kh.GetDexFile();
1568 const byte* class_data = dex_file.GetClassData(*dex_class_def);
1569 if (class_data == NULL) {
1570 return; // no fields or methods - for example a marker interface
1571 }
Ian Rogers62d6c772013-02-27 08:32:07 -08001572 Runtime* runtime = Runtime::Current();
1573 if (!runtime->IsStarted() || runtime->UseCompileTimeClassPath()) {
Ian Rogers19846512012-02-24 11:42:47 -08001574 // OAT file unavailable
1575 return;
1576 }
Brian Carlstromf5822582012-03-19 22:34:31 -07001577 UniquePtr<const OatFile::OatClass> oat_class(GetOatClass(dex_file, kh.GetDescriptor()));
1578 CHECK(oat_class.get() != NULL);
Ian Rogers19846512012-02-24 11:42:47 -08001579 ClassDataItemIterator it(dex_file, class_data);
1580 // Skip fields
1581 while (it.HasNextStaticField()) {
1582 it.Next();
1583 }
1584 while (it.HasNextInstanceField()) {
1585 it.Next();
1586 }
Ian Rogers19846512012-02-24 11:42:47 -08001587 // Link the code of methods skipped by LinkCode
Sebastien Hertz7d658cf2013-07-09 10:56:11 +02001588 for (size_t method_index = 0; it.HasNextDirectMethod(); ++method_index, it.Next()) {
1589 mirror::AbstractMethod* method = klass->GetDirectMethod(method_index);
1590 if (!method->IsStatic()) {
1591 // Only update static methods.
1592 continue;
Ian Rogers19846512012-02-24 11:42:47 -08001593 }
Sebastien Hertz7d658cf2013-07-09 10:56:11 +02001594 const void* code = oat_class->GetOatMethod(method_index).GetCode();
1595 const bool enter_interpreter = NeedsInterpreter(method, code);
1596 if (enter_interpreter) {
1597 // Use interpreter entry point.
1598 code = GetInterpreterEntryPoint();
1599 }
1600 runtime->GetInstrumentation()->UpdateMethodsCode(method, code);
Ian Rogers19846512012-02-24 11:42:47 -08001601 }
Ian Rogers62d6c772013-02-27 08:32:07 -08001602 // Ignore virtual methods on the iterator.
Ian Rogers19846512012-02-24 11:42:47 -08001603}
1604
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001605static void LinkCode(SirtRef<mirror::AbstractMethod>& method, const OatFile::OatClass* oat_class,
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001606 uint32_t method_index)
Ian Rogersb726dcb2012-09-05 08:57:23 -07001607 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Ian Rogers62d6c772013-02-27 08:32:07 -08001608 // Method shouldn't have already been linked.
Jeff Haoaa4a7932013-05-13 11:28:27 -07001609 DCHECK(method->GetEntryPointFromCompiledCode() == NULL);
Brian Carlstrom92827a52011-10-10 15:50:01 -07001610 // Every kind of method should at least get an invoke stub from the oat_method.
1611 // non-abstract methods also get their code pointers.
1612 const OatFile::OatMethod oat_method = oat_class->GetOatMethod(method_index);
Brian Carlstrom265091e2013-01-30 14:08:26 -08001613 oat_method.LinkMethod(method.get());
Brian Carlstrom92827a52011-10-10 15:50:01 -07001614
Jeff Hao16743632013-05-08 10:59:04 -07001615 // Install entry point from interpreter.
Jeff Hao790ad902013-05-22 15:02:08 -07001616 Runtime* runtime = Runtime::Current();
Sebastien Hertz7d658cf2013-07-09 10:56:11 +02001617 bool enter_interpreter = NeedsInterpreter(method.get(), method->GetEntryPointFromCompiledCode());
Jeff Hao0aba0ba2013-06-03 14:49:28 -07001618 if (enter_interpreter) {
1619 method->SetEntryPointFromInterpreter(interpreter::artInterpreterToInterpreterEntry);
Jeff Hao16743632013-05-08 10:59:04 -07001620 } else {
1621 method->SetEntryPointFromInterpreter(artInterpreterToQuickEntry);
1622 }
1623
Brian Carlstrom92827a52011-10-10 15:50:01 -07001624 if (method->IsAbstract()) {
Jeff Haoaa4a7932013-05-13 11:28:27 -07001625 method->SetEntryPointFromCompiledCode(GetAbstractMethodErrorStub());
Brian Carlstrom92827a52011-10-10 15:50:01 -07001626 return;
1627 }
Ian Rogers19846512012-02-24 11:42:47 -08001628
1629 if (method->IsStatic() && !method->IsConstructor()) {
Ian Rogers62d6c772013-02-27 08:32:07 -08001630 // For static methods excluding the class initializer, install the trampoline.
Sebastien Hertz7d658cf2013-07-09 10:56:11 +02001631 // It will be replaced by the proper entry point by ClassLinker::FixupStaticTrampolines
1632 // after initializing class (see ClassLinker::InitializeClass method).
Jeff Hao0aba0ba2013-06-03 14:49:28 -07001633 method->SetEntryPointFromCompiledCode(GetResolutionTrampoline(runtime->GetClassLinker()));
Sebastien Hertz7d658cf2013-07-09 10:56:11 +02001634 } else if (enter_interpreter) {
1635 // Set entry point from compiled code if there's no code or in interpreter only mode.
1636 method->SetEntryPointFromCompiledCode(GetInterpreterEntryPoint());
Ian Rogers0d6de042012-02-29 08:50:26 -08001637 }
jeffhao26c0a1a2012-01-17 16:28:33 -08001638
Ian Rogers62d6c772013-02-27 08:32:07 -08001639 if (method->IsNative()) {
1640 // Unregistering restores the dlsym lookup stub.
1641 method->UnregisterNative(Thread::Current());
Brian Carlstrom92827a52011-10-10 15:50:01 -07001642 }
Ian Rogersf3e98552013-03-20 15:49:49 -07001643
Ian Rogers62d6c772013-02-27 08:32:07 -08001644 // Allow instrumentation its chance to hijack code.
Jeff Haoaa4a7932013-05-13 11:28:27 -07001645 runtime->GetInstrumentation()->UpdateMethodsCode(method.get(),
1646 method->GetEntryPointFromCompiledCode());
Brian Carlstrom92827a52011-10-10 15:50:01 -07001647}
1648
Brian Carlstromf615a612011-07-23 12:50:34 -07001649void ClassLinker::LoadClass(const DexFile& dex_file,
1650 const DexFile::ClassDef& dex_class_def,
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001651 SirtRef<mirror::Class>& klass,
1652 mirror::ClassLoader* class_loader) {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001653 CHECK(klass.get() != NULL);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001654 CHECK(klass->GetDexCache() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001655 CHECK_EQ(mirror::Class::kStatusNotReady, klass->GetStatus());
Brian Carlstromf615a612011-07-23 12:50:34 -07001656 const char* descriptor = dex_file.GetClassDescriptor(dex_class_def);
Brian Carlstrom934486c2011-07-12 23:42:50 -07001657 CHECK(descriptor != NULL);
1658
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001659 klass->SetClass(GetClassRoot(kJavaLangClass));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001660 uint32_t access_flags = dex_class_def.access_flags_;
Elliott Hughes582a7d12011-10-10 18:38:42 -07001661 // Make sure that none of our runtime-only flags are set.
mikaelpeltier6ffd0962012-10-25 15:37:45 +02001662 // TODO: JACK CLASS ACCESS (HACK TO BE REMOVED)
1663 CHECK_EQ(access_flags & ~(kAccJavaFlagsMask | kAccClassJack), 0U);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001664 klass->SetAccessFlags(access_flags);
1665 klass->SetClassLoader(class_loader);
Ian Rogersc2b44472011-12-14 21:17:17 -08001666 DCHECK_EQ(klass->GetPrimitiveType(), Primitive::kPrimNot);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001667 klass->SetStatus(mirror::Class::kStatusIdx);
Brian Carlstrom934486c2011-07-12 23:42:50 -07001668
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001669 klass->SetDexTypeIndex(dex_class_def.class_idx_);
Brian Carlstrom934486c2011-07-12 23:42:50 -07001670
Ian Rogers0571d352011-11-03 19:51:38 -07001671 // Load fields fields.
1672 const byte* class_data = dex_file.GetClassData(dex_class_def);
1673 if (class_data == NULL) {
1674 return; // no fields or methods - for example a marker interface
Brian Carlstrom934486c2011-07-12 23:42:50 -07001675 }
Ian Rogers0571d352011-11-03 19:51:38 -07001676 ClassDataItemIterator it(dex_file, class_data);
Ian Rogers50b35e22012-10-04 10:09:15 -07001677 Thread* self = Thread::Current();
Ian Rogers0571d352011-11-03 19:51:38 -07001678 if (it.NumStaticFields() != 0) {
Ian Rogers4445a7e2012-10-05 17:19:13 -07001679 klass->SetSFields(AllocFieldArray(self, it.NumStaticFields()));
Ian Rogers0571d352011-11-03 19:51:38 -07001680 }
1681 if (it.NumInstanceFields() != 0) {
Ian Rogers4445a7e2012-10-05 17:19:13 -07001682 klass->SetIFields(AllocFieldArray(self, it.NumInstanceFields()));
Ian Rogers0571d352011-11-03 19:51:38 -07001683 }
1684 for (size_t i = 0; it.HasNextStaticField(); i++, it.Next()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001685 SirtRef<mirror::Field> sfield(self, AllocField(self));
Ian Rogers0571d352011-11-03 19:51:38 -07001686 klass->SetStaticField(i, sfield.get());
1687 LoadField(dex_file, it, klass, sfield);
1688 }
1689 for (size_t i = 0; it.HasNextInstanceField(); i++, it.Next()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001690 SirtRef<mirror::Field> ifield(self, AllocField(self));
Ian Rogers0571d352011-11-03 19:51:38 -07001691 klass->SetInstanceField(i, ifield.get());
1692 LoadField(dex_file, it, klass, ifield);
Brian Carlstrom934486c2011-07-12 23:42:50 -07001693 }
1694
Brian Carlstromf5822582012-03-19 22:34:31 -07001695 UniquePtr<const OatFile::OatClass> oat_class;
1696 if (Runtime::Current()->IsStarted() && !Runtime::Current()->UseCompileTimeClassPath()) {
1697 oat_class.reset(GetOatClass(dex_file, descriptor));
1698 }
Ian Rogers19846512012-02-24 11:42:47 -08001699
Ian Rogers0571d352011-11-03 19:51:38 -07001700 // Load methods.
1701 if (it.NumDirectMethods() != 0) {
Brian Carlstrom934486c2011-07-12 23:42:50 -07001702 // TODO: append direct methods to class object
Ian Rogers4445a7e2012-10-05 17:19:13 -07001703 klass->SetDirectMethods(AllocAbstractMethodArray(self, it.NumDirectMethods()));
Brian Carlstrom934486c2011-07-12 23:42:50 -07001704 }
Ian Rogers0571d352011-11-03 19:51:38 -07001705 if (it.NumVirtualMethods() != 0) {
1706 // TODO: append direct methods to class object
Ian Rogers4445a7e2012-10-05 17:19:13 -07001707 klass->SetVirtualMethods(AllocMethodArray(self, it.NumVirtualMethods()));
Brian Carlstrom934486c2011-07-12 23:42:50 -07001708 }
Ian Rogersfb6adba2012-03-04 21:51:51 -08001709 size_t class_def_method_index = 0;
Ian Rogers0571d352011-11-03 19:51:38 -07001710 for (size_t i = 0; it.HasNextDirectMethod(); i++, it.Next()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001711 SirtRef<mirror::AbstractMethod> method(self, LoadMethod(self, dex_file, it, klass));
Ian Rogers0571d352011-11-03 19:51:38 -07001712 klass->SetDirectMethod(i, method.get());
Ian Rogers0571d352011-11-03 19:51:38 -07001713 if (oat_class.get() != NULL) {
Ian Rogersfb6adba2012-03-04 21:51:51 -08001714 LinkCode(method, oat_class.get(), class_def_method_index);
Ian Rogers0571d352011-11-03 19:51:38 -07001715 }
Ian Rogersfb6adba2012-03-04 21:51:51 -08001716 method->SetMethodIndex(class_def_method_index);
1717 class_def_method_index++;
Ian Rogers0571d352011-11-03 19:51:38 -07001718 }
1719 for (size_t i = 0; it.HasNextVirtualMethod(); i++, it.Next()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001720 SirtRef<mirror::AbstractMethod> method(self, LoadMethod(self, dex_file, it, klass));
Ian Rogers0571d352011-11-03 19:51:38 -07001721 klass->SetVirtualMethod(i, method.get());
Ian Rogersfb6adba2012-03-04 21:51:51 -08001722 DCHECK_EQ(class_def_method_index, it.NumDirectMethods() + i);
Ian Rogers0571d352011-11-03 19:51:38 -07001723 if (oat_class.get() != NULL) {
Ian Rogersfb6adba2012-03-04 21:51:51 -08001724 LinkCode(method, oat_class.get(), class_def_method_index);
Ian Rogers0571d352011-11-03 19:51:38 -07001725 }
Ian Rogersfb6adba2012-03-04 21:51:51 -08001726 class_def_method_index++;
Ian Rogers0571d352011-11-03 19:51:38 -07001727 }
1728 DCHECK(!it.HasNext());
Brian Carlstrom934486c2011-07-12 23:42:50 -07001729}
1730
Elliott Hughes1bac54f2012-03-16 12:48:31 -07001731void ClassLinker::LoadField(const DexFile& /*dex_file*/, const ClassDataItemIterator& it,
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001732 SirtRef<mirror::Class>& klass, SirtRef<mirror::Field>& dst) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001733 uint32_t field_idx = it.GetMemberIndex();
1734 dst->SetDexFieldIndex(field_idx);
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001735 dst->SetDeclaringClass(klass.get());
Ian Rogers0571d352011-11-03 19:51:38 -07001736 dst->SetAccessFlags(it.GetMemberAccessFlags());
Brian Carlstrom934486c2011-07-12 23:42:50 -07001737}
1738
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001739mirror::AbstractMethod* ClassLinker::LoadMethod(Thread* self, const DexFile& dex_file,
1740 const ClassDataItemIterator& it,
1741 SirtRef<mirror::Class>& klass) {
Ian Rogers19846512012-02-24 11:42:47 -08001742 uint32_t dex_method_idx = it.GetMemberIndex();
Ian Rogers19846512012-02-24 11:42:47 -08001743 const DexFile::MethodId& method_id = dex_file.GetMethodId(dex_method_idx);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001744 StringPiece method_name(dex_file.GetMethodName(method_id));
Mathieu Chartier66f19252012-09-18 08:57:04 -07001745
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001746 mirror::AbstractMethod* dst = NULL;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001747 if (method_name == "<init>") {
Ian Rogers50b35e22012-10-04 10:09:15 -07001748 dst = AllocConstructor(self);
Mathieu Chartier66f19252012-09-18 08:57:04 -07001749 } else {
Ian Rogers50b35e22012-10-04 10:09:15 -07001750 dst = AllocMethod(self);
Elliott Hughes80609252011-09-23 17:24:51 -07001751 }
Mathieu Chartier66f19252012-09-18 08:57:04 -07001752 DCHECK(dst->IsMethod()) << PrettyDescriptor(dst->GetClass());
1753
Ian Rogers50b35e22012-10-04 10:09:15 -07001754 const char* old_cause = self->StartAssertNoThreadSuspension("LoadMethod");
Mathieu Chartier66f19252012-09-18 08:57:04 -07001755 dst->SetDexMethodIndex(dex_method_idx);
1756 dst->SetDeclaringClass(klass.get());
Elliott Hughes20cde902011-10-04 17:37:27 -07001757
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001758 if (method_name == "finalize") {
1759 // Create the prototype for a signature of "()V"
1760 const DexFile::StringId* void_string_id = dex_file.FindStringId("V");
1761 if (void_string_id != NULL) {
1762 const DexFile::TypeId* void_type_id =
1763 dex_file.FindTypeId(dex_file.GetIndexForStringId(*void_string_id));
1764 if (void_type_id != NULL) {
1765 std::vector<uint16_t> no_args;
1766 const DexFile::ProtoId* finalizer_proto =
1767 dex_file.FindProtoId(dex_file.GetIndexForTypeId(*void_type_id), no_args);
1768 if (finalizer_proto != NULL) {
1769 // We have the prototype in the dex file
1770 if (klass->GetClassLoader() != NULL) { // All non-boot finalizer methods are flagged
1771 klass->SetFinalizable();
1772 } else {
1773 StringPiece klass_descriptor(dex_file.StringByTypeIdx(klass->GetDexTypeIndex()));
1774 // The Enum class declares a "final" finalize() method to prevent subclasses from
1775 // introducing a finalizer. We don't want to set the finalizable flag for Enum or its
1776 // subclasses, so we exclude it here.
1777 // We also want to avoid setting the flag on Object, where we know that finalize() is
1778 // empty.
1779 if (klass_descriptor != "Ljava/lang/Object;" &&
1780 klass_descriptor != "Ljava/lang/Enum;") {
1781 klass->SetFinalizable();
1782 }
1783 }
1784 }
1785 }
Elliott Hughes20cde902011-10-04 17:37:27 -07001786 }
Carl Shapiro419ec7b2011-08-03 14:48:33 -07001787 }
Ian Rogers0571d352011-11-03 19:51:38 -07001788 dst->SetCodeItemOffset(it.GetMethodCodeItemOffset());
Ian Rogers0571d352011-11-03 19:51:38 -07001789 dst->SetAccessFlags(it.GetMemberAccessFlags());
Brian Carlstrom934486c2011-07-12 23:42:50 -07001790
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001791 dst->SetDexCacheStrings(klass->GetDexCache()->GetStrings());
Ian Rogers19846512012-02-24 11:42:47 -08001792 dst->SetDexCacheResolvedMethods(klass->GetDexCache()->GetResolvedMethods());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001793 dst->SetDexCacheResolvedTypes(klass->GetDexCache()->GetResolvedTypes());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001794 dst->SetDexCacheInitializedStaticStorage(klass->GetDexCache()->GetInitializedStaticStorage());
Mathieu Chartier66f19252012-09-18 08:57:04 -07001795
1796 CHECK(dst->IsMethod());
1797
Ian Rogers50b35e22012-10-04 10:09:15 -07001798 self->EndAssertNoThreadSuspension(old_cause);
Mathieu Chartier66f19252012-09-18 08:57:04 -07001799 return dst;
Brian Carlstrom934486c2011-07-12 23:42:50 -07001800}
1801
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07001802void ClassLinker::AppendToBootClassPath(const DexFile& dex_file) {
Ian Rogers50b35e22012-10-04 10:09:15 -07001803 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001804 SirtRef<mirror::DexCache> dex_cache(self, AllocDexCache(self, dex_file));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001805 AppendToBootClassPath(dex_file, dex_cache);
Brian Carlstroma663ea52011-08-19 23:33:41 -07001806}
1807
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001808void ClassLinker::AppendToBootClassPath(const DexFile& dex_file, SirtRef<mirror::DexCache>& dex_cache) {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001809 CHECK(dex_cache.get() != NULL) << dex_file.GetLocation();
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07001810 boot_class_path_.push_back(&dex_file);
Brian Carlstroma663ea52011-08-19 23:33:41 -07001811 RegisterDexFile(dex_file, dex_cache);
Brian Carlstrom578bbdc2011-07-21 14:07:47 -07001812}
1813
Brian Carlstromaded5f72011-10-07 17:15:04 -07001814bool ClassLinker::IsDexFileRegisteredLocked(const DexFile& dex_file) const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001815 dex_lock_.AssertSharedHeld(Thread::Current());
Mathieu Chartier66f19252012-09-18 08:57:04 -07001816 for (size_t i = 0; i != dex_caches_.size(); ++i) {
1817 if (dex_caches_[i]->GetDexFile() == &dex_file) {
Ian Rogers19846512012-02-24 11:42:47 -08001818 return true;
Brian Carlstromaded5f72011-10-07 17:15:04 -07001819 }
1820 }
1821 return false;
Brian Carlstroma663ea52011-08-19 23:33:41 -07001822}
1823
Brian Carlstromaded5f72011-10-07 17:15:04 -07001824bool ClassLinker::IsDexFileRegistered(const DexFile& dex_file) const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001825 ReaderMutexLock mu(Thread::Current(), dex_lock_);
Brian Carlstrom06918512011-10-16 23:39:12 -07001826 return IsDexFileRegisteredLocked(dex_file);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001827}
1828
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001829void ClassLinker::RegisterDexFileLocked(const DexFile& dex_file, SirtRef<mirror::DexCache>& dex_cache) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001830 dex_lock_.AssertExclusiveHeld(Thread::Current());
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001831 CHECK(dex_cache.get() != NULL) << dex_file.GetLocation();
Brian Carlstrom69b15fb2011-09-03 12:25:21 -07001832 CHECK(dex_cache->GetLocation()->Equals(dex_file.GetLocation()));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001833 dex_caches_.push_back(dex_cache.get());
Mathieu Chartier66f19252012-09-18 08:57:04 -07001834 dex_cache->SetDexFile(&dex_file);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07001835 Dirty();
Brian Carlstrom578bbdc2011-07-21 14:07:47 -07001836}
1837
Brian Carlstromaded5f72011-10-07 17:15:04 -07001838void ClassLinker::RegisterDexFile(const DexFile& dex_file) {
Ian Rogers1f539342012-10-03 21:09:42 -07001839 Thread* self = Thread::Current();
Brian Carlstrom47d237a2011-10-18 15:08:33 -07001840 {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001841 ReaderMutexLock mu(self, dex_lock_);
Brian Carlstrom47d237a2011-10-18 15:08:33 -07001842 if (IsDexFileRegisteredLocked(dex_file)) {
1843 return;
1844 }
Brian Carlstromaded5f72011-10-07 17:15:04 -07001845 }
Brian Carlstrom47d237a2011-10-18 15:08:33 -07001846 // Don't alloc while holding the lock, since allocation may need to
1847 // suspend all threads and another thread may need the dex_lock_ to
1848 // get to a suspend point.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001849 SirtRef<mirror::DexCache> dex_cache(self, AllocDexCache(self, dex_file));
Brian Carlstrom47d237a2011-10-18 15:08:33 -07001850 {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001851 WriterMutexLock mu(self, dex_lock_);
Brian Carlstrom47d237a2011-10-18 15:08:33 -07001852 if (IsDexFileRegisteredLocked(dex_file)) {
1853 return;
1854 }
1855 RegisterDexFileLocked(dex_file, dex_cache);
1856 }
Brian Carlstromaded5f72011-10-07 17:15:04 -07001857}
1858
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001859void ClassLinker::RegisterDexFile(const DexFile& dex_file, SirtRef<mirror::DexCache>& dex_cache) {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001860 WriterMutexLock mu(Thread::Current(), dex_lock_);
Brian Carlstromaded5f72011-10-07 17:15:04 -07001861 RegisterDexFileLocked(dex_file, dex_cache);
1862}
1863
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001864mirror::DexCache* ClassLinker::FindDexCache(const DexFile& dex_file) const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001865 ReaderMutexLock mu(Thread::Current(), dex_lock_);
Ian Rogers2bcb4a42012-11-08 10:39:18 -08001866 // Search assuming unique-ness of dex file.
Mathieu Chartier66f19252012-09-18 08:57:04 -07001867 for (size_t i = 0; i != dex_caches_.size(); ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001868 mirror::DexCache* dex_cache = dex_caches_[i];
Mathieu Chartier66f19252012-09-18 08:57:04 -07001869 if (dex_cache->GetDexFile() == &dex_file) {
1870 return dex_cache;
Brian Carlstrom578bbdc2011-07-21 14:07:47 -07001871 }
1872 }
Ian Rogers2bcb4a42012-11-08 10:39:18 -08001873 // Search matching by location name.
1874 std::string location(dex_file.GetLocation());
1875 for (size_t i = 0; i != dex_caches_.size(); ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001876 mirror::DexCache* dex_cache = dex_caches_[i];
Ian Rogers2bcb4a42012-11-08 10:39:18 -08001877 if (dex_cache->GetDexFile()->GetLocation() == location) {
1878 return dex_cache;
1879 }
1880 }
1881 // Failure, dump diagnostic and abort.
1882 for (size_t i = 0; i != dex_caches_.size(); ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001883 mirror::DexCache* dex_cache = dex_caches_[i];
Ian Rogers2bcb4a42012-11-08 10:39:18 -08001884 LOG(ERROR) << "Registered dex file " << i << " = " << dex_cache->GetDexFile()->GetLocation();
1885 }
1886 LOG(FATAL) << "Failed to find DexCache for DexFile " << location;
Brian Carlstrom578bbdc2011-07-21 14:07:47 -07001887 return NULL;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001888}
1889
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001890void ClassLinker::FixupDexCaches(mirror::AbstractMethod* resolution_method) const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07001891 ReaderMutexLock mu(Thread::Current(), dex_lock_);
Ian Rogers19846512012-02-24 11:42:47 -08001892 for (size_t i = 0; i != dex_caches_.size(); ++i) {
1893 dex_caches_[i]->Fixup(resolution_method);
1894 }
1895}
1896
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001897mirror::Class* ClassLinker::CreatePrimitiveClass(Thread* self, Primitive::Type type) {
1898 return InitializePrimitiveClass(AllocClass(self, sizeof(mirror::Class)), type);
1899}
1900
1901mirror::Class* ClassLinker::InitializePrimitiveClass(mirror::Class* primitive_class, Primitive::Type type) {
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001902 CHECK(primitive_class != NULL);
Ian Rogers1f539342012-10-03 21:09:42 -07001903 // Must hold lock on object when initializing.
1904 ObjectLock lock(Thread::Current(), primitive_class);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001905 primitive_class->SetAccessFlags(kAccPublic | kAccFinal | kAccAbstract);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001906 primitive_class->SetPrimitiveType(type);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001907 primitive_class->SetStatus(mirror::Class::kStatusInitialized);
1908 mirror::Class* existing = InsertClass(Primitive::Descriptor(type), primitive_class, false);
Ian Rogersc8982582012-09-07 16:53:25 -07001909 CHECK(existing == NULL) << "InitPrimitiveClass(" << type << ") failed";
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001910 return primitive_class;
Carl Shapiro565f5072011-07-10 13:39:43 -07001911}
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07001912
Brian Carlstrombe977852011-07-19 14:54:54 -07001913// Create an array class (i.e. the class object for the array, not the
1914// array itself). "descriptor" looks like "[C" or "[[[[B" or
1915// "[Ljava/lang/String;".
1916//
1917// If "descriptor" refers to an array of primitives, look up the
1918// primitive type's internally-generated class object.
1919//
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001920// "class_loader" is the class loader of the class that's referring to
1921// us. It's used to ensure that we're looking for the element type in
1922// the right context. It does NOT become the class loader for the
1923// array class; that always comes from the base element class.
Brian Carlstrombe977852011-07-19 14:54:54 -07001924//
1925// Returns NULL with an exception raised on failure.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001926mirror::Class* ClassLinker::CreateArrayClass(const std::string& descriptor,
1927 mirror::ClassLoader* class_loader) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001928 CHECK_EQ('[', descriptor[0]);
Brian Carlstroma331b3c2011-07-18 17:47:56 -07001929
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001930 // Identify the underlying component type
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001931 mirror::Class* component_type = FindClass(descriptor.substr(1).c_str(), class_loader);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001932 if (component_type == NULL) {
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -07001933 DCHECK(Thread::Current()->IsExceptionPending());
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001934 return NULL;
1935 }
Brian Carlstroma331b3c2011-07-18 17:47:56 -07001936
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001937 // See if the component type is already loaded. Array classes are
1938 // always associated with the class loader of their underlying
1939 // element type -- an array of Strings goes with the loader for
1940 // java/lang/String -- so we need to look for it there. (The
1941 // caller should have checked for the existence of the class
1942 // before calling here, but they did so with *their* class loader,
1943 // not the component type's loader.)
1944 //
1945 // If we find it, the caller adds "loader" to the class' initiating
1946 // loader list, which should prevent us from going through this again.
1947 //
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001948 // This call is unnecessary if "loader" and "component_type->GetClassLoader()"
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001949 // are the same, because our caller (FindClass) just did the
1950 // lookup. (Even if we get this wrong we still have correct behavior,
1951 // because we effectively do this lookup again when we add the new
1952 // class to the hash table --- necessary because of possible races with
1953 // other threads.)
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001954 if (class_loader != component_type->GetClassLoader()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001955 mirror::Class* new_class = LookupClass(descriptor.c_str(), component_type->GetClassLoader());
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001956 if (new_class != NULL) {
Brian Carlstroma331b3c2011-07-18 17:47:56 -07001957 return new_class;
1958 }
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001959 }
Brian Carlstroma331b3c2011-07-18 17:47:56 -07001960
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001961 // Fill out the fields in the Class.
1962 //
1963 // It is possible to execute some methods against arrays, because
1964 // all arrays are subclasses of java_lang_Object_, so we need to set
1965 // up a vtable. We can just point at the one in java_lang_Object_.
1966 //
1967 // Array classes are simple enough that we don't need to do a full
1968 // link step.
Ian Rogers1f539342012-10-03 21:09:42 -07001969 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001970 SirtRef<mirror::Class> new_class(self, NULL);
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001971 if (!init_done_) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001972 // Classes that were hand created, ie not by FindSystemClass
Elliott Hughes418d20f2011-09-22 14:00:39 -07001973 if (descriptor == "[Ljava/lang/Class;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001974 new_class.reset(GetClassRoot(kClassArrayClass));
Elliott Hughes418d20f2011-09-22 14:00:39 -07001975 } else if (descriptor == "[Ljava/lang/Object;") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001976 new_class.reset(GetClassRoot(kObjectArrayClass));
Mathieu Chartier66f19252012-09-18 08:57:04 -07001977 } else if (descriptor == class_roots_descriptors_[kJavaLangStringArrayClass]) {
1978 new_class.reset(GetClassRoot(kJavaLangStringArrayClass));
Mathieu Chartier66f19252012-09-18 08:57:04 -07001979 } else if (descriptor == class_roots_descriptors_[kJavaLangReflectAbstractMethodArrayClass]) {
1980 new_class.reset(GetClassRoot(kJavaLangReflectAbstractMethodArrayClass));
Ian Rogers4445a7e2012-10-05 17:19:13 -07001981 } else if (descriptor == class_roots_descriptors_[kJavaLangReflectFieldArrayClass]) {
1982 new_class.reset(GetClassRoot(kJavaLangReflectFieldArrayClass));
1983 } else if (descriptor == class_roots_descriptors_[kJavaLangReflectMethodArrayClass]) {
1984 new_class.reset(GetClassRoot(kJavaLangReflectMethodArrayClass));
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001985 } else if (descriptor == "[C") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001986 new_class.reset(GetClassRoot(kCharArrayClass));
Elliott Hughesc1674ed2011-08-25 18:09:09 -07001987 } else if (descriptor == "[I") {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001988 new_class.reset(GetClassRoot(kIntArrayClass));
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001989 }
1990 }
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001991 if (new_class.get() == NULL) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001992 new_class.reset(AllocClass(self, sizeof(mirror::Class)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001993 if (new_class.get() == NULL) {
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001994 return NULL;
1995 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001996 new_class->SetComponentType(component_type);
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07001997 }
Ian Rogers1f539342012-10-03 21:09:42 -07001998 ObjectLock lock(self, new_class.get()); // Must hold lock on object when initializing.
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07001999 DCHECK(new_class->GetComponentType() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002000 mirror::Class* java_lang_Object = GetClassRoot(kJavaLangObject);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07002001 new_class->SetSuperClass(java_lang_Object);
2002 new_class->SetVTable(java_lang_Object->GetVTable());
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002003 new_class->SetPrimitiveType(Primitive::kPrimNot);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07002004 new_class->SetClassLoader(component_type->GetClassLoader());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002005 new_class->SetStatus(mirror::Class::kStatusInitialized);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07002006 // don't need to set new_class->SetObjectSize(..)
Brian Carlstrom9cff8e12011-08-18 16:47:29 -07002007 // because Object::SizeOf delegates to Array::SizeOf
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002008
2009
2010 // All arrays have java/lang/Cloneable and java/io/Serializable as
2011 // interfaces. We need to set that up here, so that stuff like
2012 // "instanceof" works right.
2013 //
2014 // Note: The GC could run during the call to FindSystemClass,
2015 // so we need to make sure the class object is GC-valid while we're in
2016 // there. Do this by clearing the interface list so the GC will just
2017 // think that the entries are null.
2018
2019
2020 // Use the single, global copies of "interfaces" and "iftable"
2021 // (remember not to free them for arrays).
Elliott Hughes92f14b22011-10-06 12:29:54 -07002022 CHECK(array_iftable_ != NULL);
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07002023 new_class->SetIfTable(array_iftable_);
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002024
Elliott Hughes00626c22013-06-14 15:04:14 -07002025 // Inherit access flags from the component type.
2026 int access_flags = new_class->GetComponentType()->GetAccessFlags();
2027 // Lose any implementation detail flags; in particular, arrays aren't finalizable.
2028 access_flags &= kAccJavaFlagsMask;
2029 // Arrays can't be used as a superclass or interface, so we want to add "abstract final"
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002030 // and remove "interface".
Elliott Hughes00626c22013-06-14 15:04:14 -07002031 access_flags |= kAccAbstract | kAccFinal;
2032 access_flags &= ~kAccInterface;
2033
2034 new_class->SetAccessFlags(access_flags);
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002035
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002036 mirror::Class* existing = InsertClass(descriptor, new_class.get(), false);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002037 if (existing == NULL) {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07002038 return new_class.get();
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002039 }
2040 // Another thread must have loaded the class after we
2041 // started but before we finished. Abandon what we've
2042 // done.
2043 //
2044 // (Yes, this happens.)
2045
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002046 return existing;
Brian Carlstroma331b3c2011-07-18 17:47:56 -07002047}
2048
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002049mirror::Class* ClassLinker::FindPrimitiveClass(char type) {
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002050 switch (Primitive::GetType(type)) {
2051 case Primitive::kPrimByte:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002052 return GetClassRoot(kPrimitiveByte);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002053 case Primitive::kPrimChar:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002054 return GetClassRoot(kPrimitiveChar);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002055 case Primitive::kPrimDouble:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002056 return GetClassRoot(kPrimitiveDouble);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002057 case Primitive::kPrimFloat:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002058 return GetClassRoot(kPrimitiveFloat);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002059 case Primitive::kPrimInt:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002060 return GetClassRoot(kPrimitiveInt);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002061 case Primitive::kPrimLong:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002062 return GetClassRoot(kPrimitiveLong);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002063 case Primitive::kPrimShort:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002064 return GetClassRoot(kPrimitiveShort);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002065 case Primitive::kPrimBoolean:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002066 return GetClassRoot(kPrimitiveBoolean);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002067 case Primitive::kPrimVoid:
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002068 return GetClassRoot(kPrimitiveVoid);
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07002069 case Primitive::kPrimNot:
2070 break;
Carl Shapiro744ad052011-08-06 15:53:36 -07002071 }
Elliott Hughesbd935992011-08-22 11:59:34 -07002072 std::string printable_type(PrintableChar(type));
Elliott Hughes4a2b4172011-09-20 17:08:25 -07002073 ThrowNoClassDefFoundError("Not a primitive type: %s", printable_type.c_str());
Elliott Hughesbd935992011-08-22 11:59:34 -07002074 return NULL;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002075}
2076
Ian Rogers1d54e732013-05-02 21:10:01 -07002077mirror::Class* ClassLinker::InsertClass(const StringPiece& descriptor, mirror::Class* klass,
2078 bool image_class) {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -08002079 if (VLOG_IS_ON(class_linker)) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002080 mirror::DexCache* dex_cache = klass->GetDexCache();
Brian Carlstromae826982011-11-09 01:33:42 -08002081 std::string source;
2082 if (dex_cache != NULL) {
2083 source += " from ";
2084 source += dex_cache->GetLocation()->ToModifiedUtf8();
2085 }
2086 LOG(INFO) << "Loaded class " << descriptor << source;
2087 }
Brian Carlstrom9cff8e12011-08-18 16:47:29 -07002088 size_t hash = StringPieceHash()(descriptor);
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07002089 WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002090 Table& classes = image_class ? image_classes_ : classes_;
Ian Rogers1d54e732013-05-02 21:10:01 -07002091 mirror::Class* existing =
2092 LookupClassLocked(descriptor.data(), klass->GetClassLoader(), hash, classes);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002093#ifndef NDEBUG
2094 // Check we don't have the class in the other table in error
2095 Table& other_classes = image_class ? classes_ : image_classes_;
Elliott Hughesf8349362012-06-18 15:00:06 -07002096 CHECK(LookupClassLocked(descriptor.data(), klass->GetClassLoader(), hash, other_classes) == NULL);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002097#endif
2098 if (existing != NULL) {
2099 return existing;
Ian Rogers5d76c432011-10-31 21:42:49 -07002100 }
Ian Rogers1d54e732013-05-02 21:10:01 -07002101 Runtime::Current()->GetHeap()->VerifyObject(klass);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002102 classes.insert(std::make_pair(hash, klass));
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07002103 Dirty();
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002104 return NULL;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002105}
2106
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002107bool ClassLinker::RemoveClass(const char* descriptor, const mirror::ClassLoader* class_loader) {
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002108 size_t hash = Hash(descriptor);
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07002109 WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Elliott Hughese5448b52012-01-18 16:44:06 -08002110 typedef Table::iterator It; // TODO: C++0x auto
Brian Carlstromae826982011-11-09 01:33:42 -08002111 // TODO: determine if its better to search classes_ or image_classes_ first
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002112 ClassHelper kh;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002113 for (It it = classes_.lower_bound(hash), end = classes_.end(); it != end && it->first == hash;
2114 ++it) {
2115 mirror::Class* klass = it->second;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002116 kh.ChangeClass(klass);
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002117 if (strcmp(kh.GetDescriptor(), descriptor) == 0 && klass->GetClassLoader() == class_loader) {
Brian Carlstromae826982011-11-09 01:33:42 -08002118 classes_.erase(it);
2119 return true;
2120 }
2121 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002122 for (It it = image_classes_.lower_bound(hash), end = classes_.end();
2123 it != end && it->first == hash; ++it) {
2124 mirror::Class* klass = it->second;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002125 kh.ChangeClass(klass);
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002126 if (strcmp(kh.GetDescriptor(), descriptor) == 0 && klass->GetClassLoader() == class_loader) {
Brian Carlstromae826982011-11-09 01:33:42 -08002127 image_classes_.erase(it);
2128 return true;
2129 }
2130 }
2131 return false;
2132}
2133
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002134mirror::Class* ClassLinker::LookupClass(const char* descriptor,
2135 const mirror::ClassLoader* class_loader) {
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002136 size_t hash = Hash(descriptor);
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07002137 ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Ian Rogers5d76c432011-10-31 21:42:49 -07002138 // TODO: determine if its better to search classes_ or image_classes_ first
Sameer Abu Asal2c6de222013-05-02 17:38:59 -07002139 mirror::Class* klass = NULL;
2140 // Use image class only if the class_loader is null.
2141 if (class_loader == NULL) {
2142 klass = LookupClassLocked(descriptor, class_loader, hash, image_classes_);
2143 }
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002144 if (klass != NULL) {
2145 return klass;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002146 }
Sameer Abu Asal2c6de222013-05-02 17:38:59 -07002147 return LookupClassLocked(descriptor, class_loader, hash, classes_);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002148}
2149
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002150mirror::Class* ClassLinker::LookupClassLocked(const char* descriptor,
2151 const mirror::ClassLoader* class_loader,
2152 size_t hash, const Table& classes) {
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002153 ClassHelper kh(NULL, this);
2154 typedef Table::const_iterator It; // TODO: C++0x auto
2155 for (It it = classes.lower_bound(hash), end = classes_.end(); it != end && it->first == hash; ++it) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002156 mirror::Class* klass = it->second;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002157 kh.ChangeClass(klass);
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002158 if (strcmp(descriptor, kh.GetDescriptor()) == 0 && klass->GetClassLoader() == class_loader) {
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002159#ifndef NDEBUG
2160 for (++it; it != end && it->first == hash; ++it) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002161 mirror::Class* klass2 = it->second;
Ian Rogersd85016c2012-02-03 18:27:34 -08002162 kh.ChangeClass(klass2);
2163 CHECK(!(strcmp(descriptor, kh.GetDescriptor()) == 0 && klass2->GetClassLoader() == class_loader))
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002164 << PrettyClass(klass) << " " << klass << " " << klass->GetClassLoader() << " "
Ian Rogersd85016c2012-02-03 18:27:34 -08002165 << PrettyClass(klass2) << " " << klass2 << " " << klass2->GetClassLoader();
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002166 }
2167#endif
Ian Rogers5d76c432011-10-31 21:42:49 -07002168 return klass;
2169 }
2170 }
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002171 return NULL;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002172}
2173
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002174void ClassLinker::LookupClasses(const char* descriptor, std::vector<mirror::Class*>& classes) {
Elliott Hughes6fa602d2011-12-02 17:54:25 -08002175 classes.clear();
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002176 size_t hash = Hash(descriptor);
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07002177 ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Elliott Hughes6fa602d2011-12-02 17:54:25 -08002178 typedef Table::const_iterator It; // TODO: C++0x auto
2179 // TODO: determine if its better to search classes_ or image_classes_ first
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002180 ClassHelper kh(NULL, this);
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002181 for (It it = classes_.lower_bound(hash), end = classes_.end(); it != end && it->first == hash; ++it) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002182 mirror::Class* klass = it->second;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002183 kh.ChangeClass(klass);
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002184 if (strcmp(descriptor, kh.GetDescriptor()) == 0) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002185 classes.push_back(klass);
Elliott Hughes6fa602d2011-12-02 17:54:25 -08002186 }
2187 }
Brian Carlstrom07bb8552012-01-18 22:10:50 -08002188 for (It it = image_classes_.lower_bound(hash), end = classes_.end(); it != end && it->first == hash; ++it) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002189 mirror::Class* klass = it->second;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002190 kh.ChangeClass(klass);
Elliott Hughesc3b77c72011-12-15 20:56:48 -08002191 if (strcmp(descriptor, kh.GetDescriptor()) == 0) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002192 classes.push_back(klass);
Elliott Hughes6fa602d2011-12-02 17:54:25 -08002193 }
2194 }
2195}
2196
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002197void ClassLinker::VerifyClass(mirror::Class* klass) {
Brian Carlstrom9b5ee882012-02-28 09:48:54 -08002198 // TODO: assert that the monitor on the Class is held
Ian Rogers1f539342012-10-03 21:09:42 -07002199 Thread* self = Thread::Current();
2200 ObjectLock lock(self, klass);
Elliott Hughesd9c67be2012-02-02 19:54:06 -08002201
Ian Rogers9ffb0392012-09-10 11:56:50 -07002202 // Don't attempt to re-verify if already sufficiently verified.
2203 if (klass->IsVerified() ||
2204 (klass->IsCompileTimeVerified() && Runtime::Current()->IsCompiler())) {
jeffhao98eacac2011-09-14 16:11:53 -07002205 return;
2206 }
2207
Ian Rogers9ffb0392012-09-10 11:56:50 -07002208 // The class might already be erroneous, for example at compile time if we attempted to verify
2209 // this class as a parent to another.
Brian Carlstrom9b5ee882012-02-28 09:48:54 -08002210 if (klass->IsErroneous()) {
2211 ThrowEarlierClassFailure(klass);
2212 return;
2213 }
2214
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002215 if (klass->GetStatus() == mirror::Class::kStatusResolved) {
2216 klass->SetStatus(mirror::Class::kStatusVerifying);
Ian Rogers9ffb0392012-09-10 11:56:50 -07002217 } else {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002218 CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime)
2219 << PrettyClass(klass);
Ian Rogers9ffb0392012-09-10 11:56:50 -07002220 CHECK(!Runtime::Current()->IsCompiler());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002221 klass->SetStatus(mirror::Class::kStatusVerifyingAtRuntime);
Ian Rogers9ffb0392012-09-10 11:56:50 -07002222 }
jeffhao98eacac2011-09-14 16:11:53 -07002223
Ian Rogers9ffb0392012-09-10 11:56:50 -07002224 // Verify super class.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002225 mirror::Class* super = klass->GetSuperClass();
Ian Rogers1c5eb702012-02-01 09:18:34 -08002226 if (super != NULL) {
Ian Rogers9ffb0392012-09-10 11:56:50 -07002227 // Acquire lock to prevent races on verifying the super class.
Ian Rogers1f539342012-10-03 21:09:42 -07002228 ObjectLock lock(self, super);
Ian Rogers1c5eb702012-02-01 09:18:34 -08002229
2230 if (!super->IsVerified() && !super->IsErroneous()) {
2231 Runtime::Current()->GetClassLinker()->VerifyClass(super);
2232 }
jeffhaof1e6b7c2012-06-05 18:33:30 -07002233 if (!super->IsCompileTimeVerified()) {
Ian Rogers62d6c772013-02-27 08:32:07 -08002234 std::string error_msg(StringPrintf("Rejecting class %s that attempts to sub-class erroneous class %s",
2235 PrettyDescriptor(klass).c_str(),
2236 PrettyDescriptor(super).c_str()));
Ian Rogers1c5eb702012-02-01 09:18:34 -08002237 LOG(ERROR) << error_msg << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8();
Ian Rogers62d6c772013-02-27 08:32:07 -08002238 SirtRef<mirror::Throwable> cause(self, self->GetException(NULL));
Ian Rogers1c5eb702012-02-01 09:18:34 -08002239 if (cause.get() != NULL) {
2240 self->ClearException();
2241 }
Ian Rogers62d6c772013-02-27 08:32:07 -08002242 ThrowVerifyError(klass, "%s", error_msg.c_str());
Ian Rogers1c5eb702012-02-01 09:18:34 -08002243 if (cause.get() != NULL) {
Ian Rogers62d6c772013-02-27 08:32:07 -08002244 self->GetException(NULL)->SetCause(cause.get());
Ian Rogers1c5eb702012-02-01 09:18:34 -08002245 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002246 klass->SetStatus(mirror::Class::kStatusError);
Ian Rogers1c5eb702012-02-01 09:18:34 -08002247 return;
2248 }
2249 }
2250
Elliott Hughes634eb2e2012-03-22 16:06:28 -07002251 // Try to use verification information from the oat file, otherwise do runtime verification.
Ian Rogers4445a7e2012-10-05 17:19:13 -07002252 const DexFile& dex_file = *klass->GetDexCache()->GetDexFile();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002253 mirror::Class::Status oat_file_class_status(mirror::Class::kStatusNotReady);
Elliott Hughes634eb2e2012-03-22 16:06:28 -07002254 bool preverified = VerifyClassUsingOatFile(dex_file, klass, oat_file_class_status);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002255 if (oat_file_class_status == mirror::Class::kStatusError) {
jeffhaoec014232012-09-05 10:42:25 -07002256 LOG(WARNING) << "Skipping runtime verification of erroneous class " << PrettyDescriptor(klass)
2257 << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8();
Ian Rogers62d6c772013-02-27 08:32:07 -08002258 ThrowVerifyError(klass, "Rejecting class %s because it failed compile-time verification",
2259 PrettyDescriptor(klass).c_str());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002260 klass->SetStatus(mirror::Class::kStatusError);
jeffhaoec014232012-09-05 10:42:25 -07002261 return;
2262 }
Sebastien Hertz233ea8e2013-06-06 11:57:09 +02002263 verifier::MethodVerifier::FailureKind verifier_failure = verifier::MethodVerifier::kNoFailure;
Ian Rogers62d6c772013-02-27 08:32:07 -08002264 std::string error_msg;
jeffhaof1e6b7c2012-06-05 18:33:30 -07002265 if (!preverified) {
Sebastien Hertz233ea8e2013-06-06 11:57:09 +02002266 verifier_failure = verifier::MethodVerifier::VerifyClass(klass, error_msg,
2267 Runtime::Current()->IsCompiler());
jeffhaof1e6b7c2012-06-05 18:33:30 -07002268 }
2269 if (preverified || verifier_failure != verifier::MethodVerifier::kHardFailure) {
Ian Rogers529781d2012-07-23 17:24:29 -07002270 if (!preverified && verifier_failure != verifier::MethodVerifier::kNoFailure) {
2271 LOG(WARNING) << "Soft verification failure in class " << PrettyDescriptor(klass)
2272 << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8()
2273 << " because: " << error_msg;
2274 }
Ian Rogers1f539342012-10-03 21:09:42 -07002275 self->AssertNoPendingException();
jeffhaoe4f0b2a2012-08-30 11:18:57 -07002276 // Make sure all classes referenced by catch blocks are resolved.
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002277 ResolveClassExceptionHandlerTypes(dex_file, klass);
jeffhaoe4f0b2a2012-08-30 11:18:57 -07002278 if (verifier_failure == verifier::MethodVerifier::kNoFailure) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002279 klass->SetStatus(mirror::Class::kStatusVerified);
jeffhaoe4f0b2a2012-08-30 11:18:57 -07002280 } else {
2281 CHECK_EQ(verifier_failure, verifier::MethodVerifier::kSoftFailure);
2282 // Soft failures at compile time should be retried at runtime. Soft
2283 // failures at runtime will be handled by slow paths in the generated
2284 // code. Set status accordingly.
2285 if (Runtime::Current()->IsCompiler()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002286 klass->SetStatus(mirror::Class::kStatusRetryVerificationAtRuntime);
jeffhaoe4f0b2a2012-08-30 11:18:57 -07002287 } else {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002288 klass->SetStatus(mirror::Class::kStatusVerified);
jeffhaoe4f0b2a2012-08-30 11:18:57 -07002289 }
2290 }
jeffhao5cfd6fb2011-09-27 13:54:29 -07002291 } else {
Ian Rogers09f6b562012-01-31 21:58:52 -08002292 LOG(ERROR) << "Verification failed on class " << PrettyDescriptor(klass)
Ian Rogers1c5eb702012-02-01 09:18:34 -08002293 << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8()
2294 << " because: " << error_msg;
Ian Rogers00f7d0e2012-07-19 15:28:27 -07002295 self->AssertNoPendingException();
Ian Rogers62d6c772013-02-27 08:32:07 -08002296 ThrowVerifyError(klass, "%s", error_msg.c_str());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002297 klass->SetStatus(mirror::Class::kStatusError);
jeffhao5cfd6fb2011-09-27 13:54:29 -07002298 }
Sebastien Hertz233ea8e2013-06-06 11:57:09 +02002299 if (preverified || verifier_failure == verifier::MethodVerifier::kNoFailure) {
2300 // Class is verified so we don't need to do any access check in its methods.
2301 // Let the interpreter know it by setting the kAccPreverified flag onto each
2302 // method.
2303 // Note: we're going here during compilation and at runtime. When we set the
2304 // kAccPreverified flag when compiling image classes, the flag is recorded
2305 // in the image and is set when loading the image.
2306 klass->SetPreverifiedFlagOnAllMethods();
2307 }
jeffhao98eacac2011-09-14 16:11:53 -07002308}
2309
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002310bool ClassLinker::VerifyClassUsingOatFile(const DexFile& dex_file, mirror::Class* klass,
2311 mirror::Class::Status& oat_file_class_status) {
Anwar Ghuloum044d2832013-07-17 15:22:31 -07002312 // If we're compiling, we can only verify the class using the oat file if
2313 // we are not compiling the image or if the class we're verifying is not part of
2314 // the app. In other words, we will only check for preverification of bootclasspath
2315 // classes.
2316 if (Runtime::Current()->IsCompiler()) {
2317 // Are we compiling the bootclasspath?
2318 if (!Runtime::Current()->UseCompileTimeClassPath()) {
2319 return false;
2320 }
2321 // We are compiling an app (not the image).
2322
2323 // Is this an app class? (I.e. not a bootclasspath class)
2324 if (klass->GetClassLoader() != NULL) {
2325 return false;
2326 }
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002327 }
Anwar Ghuloum044d2832013-07-17 15:22:31 -07002328
2329
Brian Carlstrom5b332c82012-02-01 15:02:31 -08002330 const OatFile* oat_file = FindOpenedOatFileForDexFile(dex_file);
Anwar Ghuloumad256bb2013-07-18 14:58:55 -07002331 // Make this work with gtests, which do not set up the image properly.
2332 // TODO: we should clean up gtests to set up the image path properly.
2333 if (Runtime::Current()->IsCompiler() && (oat_file == NULL)) {
2334 return false;
2335 }
2336
Brian Carlstrom5b332c82012-02-01 15:02:31 -08002337 CHECK(oat_file != NULL) << dex_file.GetLocation() << " " << PrettyClass(klass);
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002338 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_file.GetLocation());
Brian Carlstrom5b332c82012-02-01 15:02:31 -08002339 CHECK(oat_dex_file != NULL) << dex_file.GetLocation() << " " << PrettyClass(klass);
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002340 const char* descriptor = ClassHelper(klass).GetDescriptor();
2341 uint32_t class_def_index;
2342 bool found = dex_file.FindClassDefIndex(descriptor, class_def_index);
Brian Carlstrom5b332c82012-02-01 15:02:31 -08002343 CHECK(found) << dex_file.GetLocation() << " " << PrettyClass(klass) << " " << descriptor;
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002344 UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file->GetOatClass(class_def_index));
Brian Carlstrom5b332c82012-02-01 15:02:31 -08002345 CHECK(oat_class.get() != NULL)
2346 << dex_file.GetLocation() << " " << PrettyClass(klass) << " " << descriptor;
Elliott Hughes634eb2e2012-03-22 16:06:28 -07002347 oat_file_class_status = oat_class->GetStatus();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002348 if (oat_file_class_status == mirror::Class::kStatusVerified ||
2349 oat_file_class_status == mirror::Class::kStatusInitialized) {
Anwar Ghuloum044d2832013-07-17 15:22:31 -07002350 return true;
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002351 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002352 if (oat_file_class_status == mirror::Class::kStatusRetryVerificationAtRuntime) {
jeffhao1ac29442012-03-26 11:37:32 -07002353 // Compile time verification failed with a soft error. Compile time verification can fail
2354 // because we have incomplete type information. Consider the following:
Ian Rogersc4762272012-02-01 15:55:55 -08002355 // class ... {
2356 // Foo x;
2357 // .... () {
2358 // if (...) {
2359 // v1 gets assigned a type of resolved class Foo
2360 // } else {
2361 // v1 gets assigned a type of unresolved class Bar
2362 // }
2363 // iput x = v1
2364 // } }
2365 // when we merge v1 following the if-the-else it results in Conflict
2366 // (see verifier::RegType::Merge) as we can't know the type of Bar and we could possibly be
2367 // allowing an unsafe assignment to the field x in the iput (javac may have compiled this as
2368 // it knew Bar was a sub-class of Foo, but for us this may have been moved into a separate apk
2369 // at compile time).
2370 return false;
2371 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002372 if (oat_file_class_status == mirror::Class::kStatusError) {
jeffhao1ac29442012-03-26 11:37:32 -07002373 // Compile time verification failed with a hard error. This is caused by invalid instructions
2374 // in the class. These errors are unrecoverable.
2375 return false;
2376 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002377 if (oat_file_class_status == mirror::Class::kStatusNotReady) {
Ian Rogersc4762272012-02-01 15:55:55 -08002378 // Status is uninitialized if we couldn't determine the status at compile time, for example,
2379 // not loading the class.
2380 // TODO: when the verifier doesn't rely on Class-es failing to resolve/load the type hierarchy
2381 // isn't a problem and this case shouldn't occur
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002382 return false;
2383 }
Elliott Hughes634eb2e2012-03-22 16:06:28 -07002384 LOG(FATAL) << "Unexpected class status: " << oat_file_class_status
Brian Carlstrom5b332c82012-02-01 15:02:31 -08002385 << " " << dex_file.GetLocation() << " " << PrettyClass(klass) << " " << descriptor;
2386
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002387 return false;
2388}
2389
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002390void ClassLinker::ResolveClassExceptionHandlerTypes(const DexFile& dex_file, mirror::Class* klass) {
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002391 for (size_t i = 0; i < klass->NumDirectMethods(); i++) {
2392 ResolveMethodExceptionHandlerTypes(dex_file, klass->GetDirectMethod(i));
2393 }
2394 for (size_t i = 0; i < klass->NumVirtualMethods(); i++) {
2395 ResolveMethodExceptionHandlerTypes(dex_file, klass->GetVirtualMethod(i));
2396 }
2397}
2398
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002399void ClassLinker::ResolveMethodExceptionHandlerTypes(const DexFile& dex_file,
2400 mirror::AbstractMethod* method) {
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002401 // similar to DexVerifier::ScanTryCatchBlocks and dex2oat's ResolveExceptionsForMethod.
2402 const DexFile::CodeItem* code_item = dex_file.GetCodeItem(method->GetCodeItemOffset());
2403 if (code_item == NULL) {
2404 return; // native or abstract method
2405 }
2406 if (code_item->tries_size_ == 0) {
2407 return; // nothing to process
2408 }
2409 const byte* handlers_ptr = DexFile::GetCatchHandlerData(*code_item, 0);
2410 uint32_t handlers_size = DecodeUnsignedLeb128(&handlers_ptr);
2411 ClassLinker* linker = Runtime::Current()->GetClassLinker();
2412 for (uint32_t idx = 0; idx < handlers_size; idx++) {
2413 CatchHandlerIterator iterator(handlers_ptr);
2414 for (; iterator.HasNext(); iterator.Next()) {
2415 // Ensure exception types are resolved so that they don't need resolution to be delivered,
2416 // unresolved exception types will be ignored by exception delivery
2417 if (iterator.GetHandlerTypeIndex() != DexFile::kDexNoIndex16) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002418 mirror::Class* exception_type = linker->ResolveType(iterator.GetHandlerTypeIndex(), method);
Brian Carlstrome7d856b2012-01-11 18:10:55 -08002419 if (exception_type == NULL) {
2420 DCHECK(Thread::Current()->IsExceptionPending());
2421 Thread::Current()->ClearException();
2422 }
2423 }
2424 }
2425 handlers_ptr = iterator.EndDataPointer();
2426 }
2427}
2428
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002429static void CheckProxyConstructor(mirror::AbstractMethod* constructor);
2430static void CheckProxyMethod(mirror::AbstractMethod* method,
2431 SirtRef<mirror::AbstractMethod>& prototype);
Ian Rogersc2b44472011-12-14 21:17:17 -08002432
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002433mirror::Class* ClassLinker::CreateProxyClass(mirror::String* name,
2434 mirror::ObjectArray<mirror::Class>* interfaces,
2435 mirror::ClassLoader* loader,
2436 mirror::ObjectArray<mirror::AbstractMethod>* methods,
2437 mirror::ObjectArray<mirror::ObjectArray<mirror::Class> >* throws) {
Ian Rogers1f539342012-10-03 21:09:42 -07002438 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002439 SirtRef<mirror::Class> klass(self, AllocClass(self, GetClassRoot(kJavaLangClass),
2440 sizeof(mirror::SynthesizedProxyClass)));
Brian Carlstrom40381fb2011-10-19 14:13:40 -07002441 CHECK(klass.get() != NULL);
Ian Rogersc2b44472011-12-14 21:17:17 -08002442 DCHECK(klass->GetClass() != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002443 klass->SetObjectSize(sizeof(mirror::Proxy));
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002444 klass->SetAccessFlags(kAccClassIsProxy | kAccPublic | kAccFinal);
Jesse Wilson95caa792011-10-12 18:14:17 -04002445 klass->SetClassLoader(loader);
Ian Rogersc2b44472011-12-14 21:17:17 -08002446 DCHECK_EQ(klass->GetPrimitiveType(), Primitive::kPrimNot);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002447 klass->SetName(name);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002448 mirror::Class* proxy_class = GetClassRoot(kJavaLangReflectProxy);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002449 klass->SetDexCache(proxy_class->GetDexCache());
Ian Rogersc2b44472011-12-14 21:17:17 -08002450
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002451 klass->SetStatus(mirror::Class::kStatusIdx);
Ian Rogersc2b44472011-12-14 21:17:17 -08002452
2453 klass->SetDexTypeIndex(DexFile::kDexNoIndex16);
2454
Elliott Hughes2ed52c42012-03-21 16:56:56 -07002455 // Instance fields are inherited, but we add a couple of static fields...
Ian Rogers4445a7e2012-10-05 17:19:13 -07002456 klass->SetSFields(AllocFieldArray(self, 2));
Elliott Hughes2ed52c42012-03-21 16:56:56 -07002457 // 1. Create a static field 'interfaces' that holds the _declared_ interfaces implemented by
2458 // our proxy, so Class.getInterfaces doesn't return the flattened set.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002459 SirtRef<mirror::Field> interfaces_sfield(self, AllocField(self));
Elliott Hughes2ed52c42012-03-21 16:56:56 -07002460 klass->SetStaticField(0, interfaces_sfield.get());
2461 interfaces_sfield->SetDexFieldIndex(0);
2462 interfaces_sfield->SetDeclaringClass(klass.get());
2463 interfaces_sfield->SetAccessFlags(kAccStatic | kAccPublic | kAccFinal);
2464 // 2. Create a static field 'throws' that holds exceptions thrown by our methods.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002465 SirtRef<mirror::Field> throws_sfield(self, AllocField(self));
Elliott Hughes2ed52c42012-03-21 16:56:56 -07002466 klass->SetStaticField(1, throws_sfield.get());
2467 throws_sfield->SetDexFieldIndex(1);
2468 throws_sfield->SetDeclaringClass(klass.get());
2469 throws_sfield->SetAccessFlags(kAccStatic | kAccPublic | kAccFinal);
Jesse Wilson95caa792011-10-12 18:14:17 -04002470
Ian Rogers466bb252011-10-14 03:29:56 -07002471 // Proxies have 1 direct method, the constructor
Ian Rogers4445a7e2012-10-05 17:19:13 -07002472 klass->SetDirectMethods(AllocAbstractMethodArray(self, 1));
Ian Rogers50b35e22012-10-04 10:09:15 -07002473 klass->SetDirectMethod(0, CreateProxyConstructor(self, klass, proxy_class));
Jesse Wilson95caa792011-10-12 18:14:17 -04002474
Ian Rogers466bb252011-10-14 03:29:56 -07002475 // Create virtual method using specified prototypes
Jesse Wilson95caa792011-10-12 18:14:17 -04002476 size_t num_virtual_methods = methods->GetLength();
Ian Rogers4445a7e2012-10-05 17:19:13 -07002477 klass->SetVirtualMethods(AllocMethodArray(self, num_virtual_methods));
Jesse Wilson95caa792011-10-12 18:14:17 -04002478 for (size_t i = 0; i < num_virtual_methods; ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002479 SirtRef<mirror::AbstractMethod> prototype(self, methods->Get(i));
Ian Rogers50b35e22012-10-04 10:09:15 -07002480 klass->SetVirtualMethod(i, CreateProxyMethod(self, klass, prototype));
Jesse Wilson95caa792011-10-12 18:14:17 -04002481 }
Ian Rogersc2b44472011-12-14 21:17:17 -08002482
2483 klass->SetSuperClass(proxy_class); // The super class is java.lang.reflect.Proxy
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002484 klass->SetStatus(mirror::Class::kStatusLoaded); // Class is now effectively in the loaded state
Ian Rogers62d6c772013-02-27 08:32:07 -08002485 self->AssertNoPendingException();
Ian Rogersc2b44472011-12-14 21:17:17 -08002486
2487 // Link the fields and virtual methods, creating vtable and iftables
2488 if (!LinkClass(klass, interfaces)) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002489 klass->SetStatus(mirror::Class::kStatusError);
Jesse Wilson95caa792011-10-12 18:14:17 -04002490 return NULL;
2491 }
Ian Rogersc8982582012-09-07 16:53:25 -07002492 {
Ian Rogers1f539342012-10-03 21:09:42 -07002493 ObjectLock lock(self, klass.get()); // Must hold lock on object when initializing.
Ian Rogers2fa6b2e2012-10-17 00:10:17 -07002494 interfaces_sfield->SetObject(klass.get(), interfaces);
2495 throws_sfield->SetObject(klass.get(), throws);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002496 klass->SetStatus(mirror::Class::kStatusInitialized);
Ian Rogersc8982582012-09-07 16:53:25 -07002497 }
Ian Rogersc2b44472011-12-14 21:17:17 -08002498
2499 // sanity checks
Elliott Hughes67d92002012-03-26 15:08:51 -07002500 if (kIsDebugBuild) {
Ian Rogersc2b44472011-12-14 21:17:17 -08002501 CHECK(klass->GetIFields() == NULL);
2502 CheckProxyConstructor(klass->GetDirectMethod(0));
2503 for (size_t i = 0; i < num_virtual_methods; ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002504 SirtRef<mirror::AbstractMethod> prototype(self, methods->Get(i));
Ian Rogersc2b44472011-12-14 21:17:17 -08002505 CheckProxyMethod(klass->GetVirtualMethod(i), prototype);
2506 }
Elliott Hughes2ed52c42012-03-21 16:56:56 -07002507
2508 std::string interfaces_field_name(StringPrintf("java.lang.Class[] %s.interfaces",
2509 name->ToModifiedUtf8().c_str()));
2510 CHECK_EQ(PrettyField(klass->GetStaticField(0)), interfaces_field_name);
2511
2512 std::string throws_field_name(StringPrintf("java.lang.Class[][] %s.throws",
2513 name->ToModifiedUtf8().c_str()));
2514 CHECK_EQ(PrettyField(klass->GetStaticField(1)), throws_field_name);
Ian Rogersc2b44472011-12-14 21:17:17 -08002515
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002516 mirror::SynthesizedProxyClass* synth_proxy_class =
2517 down_cast<mirror::SynthesizedProxyClass*>(klass.get());
Elliott Hughes2ed52c42012-03-21 16:56:56 -07002518 CHECK_EQ(synth_proxy_class->GetInterfaces(), interfaces);
Ian Rogersc2b44472011-12-14 21:17:17 -08002519 CHECK_EQ(synth_proxy_class->GetThrows(), throws);
2520 }
Brian Carlstrom40381fb2011-10-19 14:13:40 -07002521 return klass.get();
Jesse Wilson95caa792011-10-12 18:14:17 -04002522}
2523
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002524std::string ClassLinker::GetDescriptorForProxy(const mirror::Class* proxy_class) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002525 DCHECK(proxy_class->IsProxyClass());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002526 mirror::String* name = proxy_class->GetName();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002527 DCHECK(name != NULL);
2528 return DotToDescriptor(name->ToModifiedUtf8().c_str());
2529}
2530
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002531mirror::AbstractMethod* ClassLinker::FindMethodForProxy(const mirror::Class* proxy_class,
2532 const mirror::AbstractMethod* proxy_method) {
Ian Rogers16f93672012-02-14 12:29:06 -08002533 DCHECK(proxy_class->IsProxyClass());
2534 DCHECK(proxy_method->IsProxyMethod());
2535 // Locate the dex cache of the original interface/Object
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002536 mirror::DexCache* dex_cache = NULL;
Ian Rogers16f93672012-02-14 12:29:06 -08002537 {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002538 mirror::ObjectArray<mirror::Class>* resolved_types = proxy_method->GetDexCacheResolvedTypes();
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07002539 ReaderMutexLock mu(Thread::Current(), dex_lock_);
Ian Rogers16f93672012-02-14 12:29:06 -08002540 for (size_t i = 0; i != dex_caches_.size(); ++i) {
2541 if (dex_caches_[i]->GetResolvedTypes() == resolved_types) {
2542 dex_cache = dex_caches_[i];
2543 break;
2544 }
2545 }
2546 }
2547 CHECK(dex_cache != NULL);
2548 uint32_t method_idx = proxy_method->GetDexMethodIndex();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002549 mirror::AbstractMethod* resolved_method = dex_cache->GetResolvedMethod(method_idx);
Ian Rogers16f93672012-02-14 12:29:06 -08002550 CHECK(resolved_method != NULL);
2551 return resolved_method;
2552}
2553
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002554
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002555mirror::AbstractMethod* ClassLinker::CreateProxyConstructor(Thread* self,
2556 SirtRef<mirror::Class>& klass,
2557 mirror::Class* proxy_class) {
Ian Rogers466bb252011-10-14 03:29:56 -07002558 // Create constructor for Proxy that must initialize h
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002559 mirror::ObjectArray<mirror::AbstractMethod>* proxy_direct_methods =
2560 proxy_class->GetDirectMethods();
Jesse Wilsonecbce8f2011-10-21 19:57:36 -04002561 CHECK_EQ(proxy_direct_methods->GetLength(), 15);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002562 mirror::AbstractMethod* proxy_constructor = proxy_direct_methods->Get(2);
Ian Rogers466bb252011-10-14 03:29:56 -07002563 // Clone the existing constructor of Proxy (our constructor would just invoke it so steal its
2564 // code_ too)
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002565 mirror::AbstractMethod* constructor =
2566 down_cast<mirror::AbstractMethod*>(proxy_constructor->Clone(self));
Ian Rogers466bb252011-10-14 03:29:56 -07002567 // Make this constructor public and fix the class to be our Proxy version
2568 constructor->SetAccessFlags((constructor->GetAccessFlags() & ~kAccProtected) | kAccPublic);
Brian Carlstrom40381fb2011-10-19 14:13:40 -07002569 constructor->SetDeclaringClass(klass.get());
Ian Rogersc2b44472011-12-14 21:17:17 -08002570 return constructor;
2571}
2572
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002573static void CheckProxyConstructor(mirror::AbstractMethod* constructor)
Ian Rogersb726dcb2012-09-05 08:57:23 -07002574 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Ian Rogers466bb252011-10-14 03:29:56 -07002575 CHECK(constructor->IsConstructor());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002576 MethodHelper mh(constructor);
2577 CHECK_STREQ(mh.GetName(), "<init>");
Elliott Hughesba8eee12012-01-24 20:25:24 -08002578 CHECK_EQ(mh.GetSignature(), std::string("(Ljava/lang/reflect/InvocationHandler;)V"));
Ian Rogers466bb252011-10-14 03:29:56 -07002579 DCHECK(constructor->IsPublic());
Jesse Wilson95caa792011-10-12 18:14:17 -04002580}
2581
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002582mirror::AbstractMethod* ClassLinker::CreateProxyMethod(Thread* self, SirtRef<mirror::Class>& klass,
2583 SirtRef<mirror::AbstractMethod>& prototype) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002584 // Ensure prototype is in dex cache so that we can use the dex cache to look up the overridden
2585 // prototype method
Ian Rogers16f93672012-02-14 12:29:06 -08002586 prototype->GetDeclaringClass()->GetDexCache()->SetResolvedMethod(prototype->GetDexMethodIndex(),
2587 prototype.get());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002588 // We steal everything from the prototype (such as DexCache, invoke stub, etc.) then specialize
Ian Rogers466bb252011-10-14 03:29:56 -07002589 // as necessary
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002590 mirror::AbstractMethod* method = down_cast<mirror::AbstractMethod*>(prototype->Clone(self));
Ian Rogers466bb252011-10-14 03:29:56 -07002591
2592 // Set class to be the concrete proxy class and clear the abstract flag, modify exceptions to
2593 // the intersection of throw exceptions as defined in Proxy
Brian Carlstrom40381fb2011-10-19 14:13:40 -07002594 method->SetDeclaringClass(klass.get());
Ian Rogers466bb252011-10-14 03:29:56 -07002595 method->SetAccessFlags((method->GetAccessFlags() & ~kAccAbstract) | kAccFinal);
Jesse Wilson95caa792011-10-12 18:14:17 -04002596
Ian Rogers466bb252011-10-14 03:29:56 -07002597 // At runtime the method looks like a reference and argument saving method, clone the code
2598 // related parameters from this method.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002599 mirror::AbstractMethod* refs_and_args =
2600 Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs);
Ian Rogers466bb252011-10-14 03:29:56 -07002601 method->SetCoreSpillMask(refs_and_args->GetCoreSpillMask());
2602 method->SetFpSpillMask(refs_and_args->GetFpSpillMask());
2603 method->SetFrameSizeInBytes(refs_and_args->GetFrameSizeInBytes());
Ian Rogersc928de92013-02-27 14:30:44 -08002604#if !defined(ART_USE_PORTABLE_COMPILER)
Jeff Haoaa4a7932013-05-13 11:28:27 -07002605 method->SetEntryPointFromCompiledCode(reinterpret_cast<void*>(art_quick_proxy_invoke_handler));
TDYa1275bb86012012-04-11 05:57:28 -07002606#else
Jeff Haoaa4a7932013-05-13 11:28:27 -07002607 method->SetEntryPointFromCompiledCode(reinterpret_cast<void*>(art_portable_proxy_invoke_handler));
TDYa1275bb86012012-04-11 05:57:28 -07002608#endif
Jeff Hao16743632013-05-08 10:59:04 -07002609 method->SetEntryPointFromInterpreter(artInterpreterToQuickEntry);
Ian Rogers16f93672012-02-14 12:29:06 -08002610
Ian Rogersc2b44472011-12-14 21:17:17 -08002611 return method;
2612}
Jesse Wilson95caa792011-10-12 18:14:17 -04002613
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002614static void CheckProxyMethod(mirror::AbstractMethod* method,
2615 SirtRef<mirror::AbstractMethod>& prototype)
Ian Rogersb726dcb2012-09-05 08:57:23 -07002616 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Ian Rogers466bb252011-10-14 03:29:56 -07002617 // Basic sanity
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002618 CHECK(!prototype->IsFinal());
2619 CHECK(method->IsFinal());
2620 CHECK(!method->IsAbstract());
Ian Rogers19846512012-02-24 11:42:47 -08002621
2622 // The proxy method doesn't have its own dex cache or dex file and so it steals those of its
2623 // interface prototype. The exception to this are Constructors and the Class of the Proxy itself.
2624 CHECK_EQ(prototype->GetDexCacheStrings(), method->GetDexCacheStrings());
2625 CHECK_EQ(prototype->GetDexCacheResolvedMethods(), method->GetDexCacheResolvedMethods());
2626 CHECK_EQ(prototype->GetDexCacheResolvedTypes(), method->GetDexCacheResolvedTypes());
2627 CHECK_EQ(prototype->GetDexCacheInitializedStaticStorage(),
2628 method->GetDexCacheInitializedStaticStorage());
2629 CHECK_EQ(prototype->GetDexMethodIndex(), method->GetDexMethodIndex());
2630
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002631 MethodHelper mh(method);
Ian Rogers19846512012-02-24 11:42:47 -08002632 MethodHelper mh2(prototype.get());
2633 CHECK_STREQ(mh.GetName(), mh2.GetName());
2634 CHECK_STREQ(mh.GetShorty(), mh2.GetShorty());
Ian Rogers466bb252011-10-14 03:29:56 -07002635 // More complex sanity - via dex cache
Ian Rogers19846512012-02-24 11:42:47 -08002636 CHECK_EQ(mh.GetReturnType(), mh2.GetReturnType());
Jesse Wilson95caa792011-10-12 18:14:17 -04002637}
2638
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002639bool ClassLinker::InitializeClass(mirror::Class* klass, bool can_run_clinit, bool can_init_statics) {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002640 CHECK(klass->IsResolved() || klass->IsErroneous())
Ian Rogers9ffb0392012-09-10 11:56:50 -07002641 << PrettyClass(klass) << ": state=" << klass->GetStatus();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002642
Carl Shapirob5573532011-07-12 18:22:59 -07002643 Thread* self = Thread::Current();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002644
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002645 mirror::AbstractMethod* clinit = NULL;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002646 {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002647 // see JLS 3rd edition, 12.4.2 "Detailed Initialization Procedure" for the locking protocol
Ian Rogers1f539342012-10-03 21:09:42 -07002648 ObjectLock lock(self, klass);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002649
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002650 if (klass->GetStatus() == mirror::Class::kStatusInitialized) {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002651 return true;
2652 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002653
Brian Carlstromd1422f82011-09-28 11:37:09 -07002654 if (klass->IsErroneous()) {
2655 ThrowEarlierClassFailure(klass);
2656 return false;
2657 }
2658
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002659 if (klass->GetStatus() == mirror::Class::kStatusResolved ||
2660 klass->GetStatus() == mirror::Class::kStatusRetryVerificationAtRuntime) {
jeffhao98eacac2011-09-14 16:11:53 -07002661 VerifyClass(klass);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002662 if (klass->GetStatus() != mirror::Class::kStatusVerified) {
2663 if (klass->GetStatus() == mirror::Class::kStatusError) {
jeffhaoa9b3bf42012-06-06 17:18:39 -07002664 CHECK(self->IsExceptionPending());
2665 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002666 return false;
2667 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002668 }
2669
Brian Carlstrom25c33252011-09-18 15:58:35 -07002670 clinit = klass->FindDeclaredDirectMethod("<clinit>", "()V");
2671 if (clinit != NULL && !can_run_clinit) {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002672 // if the class has a <clinit> but we can't run it during compilation,
Ian Rogers1bddec32012-02-04 12:27:34 -08002673 // don't bother going to kStatusInitializing. We return false so that
2674 // sub-classes don't believe this class is initialized.
Ian Rogers19846512012-02-24 11:42:47 -08002675 // Opportunistically link non-static methods, TODO: don't initialize and dirty pages
2676 // in second pass.
Ian Rogers1bddec32012-02-04 12:27:34 -08002677 return false;
Brian Carlstrom25c33252011-09-18 15:58:35 -07002678 }
2679
Brian Carlstromd1422f82011-09-28 11:37:09 -07002680 // If the class is kStatusInitializing, either this thread is
2681 // initializing higher up the stack or another thread has beat us
2682 // to initializing and we need to wait. Either way, this
2683 // invocation of InitializeClass will not be responsible for
2684 // running <clinit> and will return.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002685 if (klass->GetStatus() == mirror::Class::kStatusInitializing) {
Elliott Hughes005ab2e2011-09-11 17:15:31 -07002686 // We caught somebody else in the act; was it us?
Elliott Hughesdcc24742011-09-07 14:02:44 -07002687 if (klass->GetClinitThreadId() == self->GetTid()) {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002688 // Yes. That's fine. Return so we can continue initializing.
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002689 return true;
2690 }
Brian Carlstromd1422f82011-09-28 11:37:09 -07002691 // No. That's fine. Wait for another thread to finish initializing.
2692 return WaitForInitializeClass(klass, self, lock);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002693 }
2694
2695 if (!ValidateSuperClassDescriptors(klass)) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002696 klass->SetStatus(mirror::Class::kStatusError);
Ian Rogers3d1548d2012-09-24 14:08:03 -07002697 lock.NotifyAll();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002698 return false;
2699 }
2700
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002701 DCHECK_EQ(klass->GetStatus(), mirror::Class::kStatusVerified) << PrettyClass(klass);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002702
Elliott Hughesdcc24742011-09-07 14:02:44 -07002703 klass->SetClinitThreadId(self->GetTid());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002704 klass->SetStatus(mirror::Class::kStatusInitializing);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002705 }
2706
Elliott Hughes83df2ac2011-10-11 16:37:54 -07002707 uint64_t t0 = NanoTime();
2708
Ian Rogers0045a292012-03-31 21:08:41 -07002709 if (!InitializeSuperClass(klass, can_run_clinit, can_init_statics)) {
Ian Rogers1bddec32012-02-04 12:27:34 -08002710 // Super class initialization failed, this can be because we can't run
2711 // super-class class initializers in which case we'll be verified.
2712 // Otherwise this class is erroneous.
2713 if (!can_run_clinit) {
2714 CHECK(klass->IsVerified());
2715 } else {
2716 CHECK(klass->IsErroneous());
2717 }
Ian Rogers3d1548d2012-09-24 14:08:03 -07002718 // Signal to any waiting threads that saw this class as initializing.
Ian Rogers1f539342012-10-03 21:09:42 -07002719 ObjectLock lock(self, klass);
Ian Rogers3d1548d2012-09-24 14:08:03 -07002720 lock.NotifyAll();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002721 return false;
2722 }
2723
Ian Rogers0045a292012-03-31 21:08:41 -07002724 bool has_static_field_initializers = InitializeStaticFields(klass);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002725
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002726 if (clinit != NULL) {
Ian Rogers64b6d142012-10-29 16:34:15 -07002727 if (Runtime::Current()->IsStarted()) {
Jeff Hao5d917302013-02-27 17:57:33 -08002728 JValue result;
Jeff Hao6474d192013-03-26 14:08:09 -07002729 clinit->Invoke(self, NULL, 0, &result, 'V');
Ian Rogers64b6d142012-10-29 16:34:15 -07002730 } else {
Jeff Hao6474d192013-03-26 14:08:09 -07002731 art::interpreter::EnterInterpreterFromInvoke(self, clinit, NULL, NULL, NULL);
Ian Rogers64b6d142012-10-29 16:34:15 -07002732 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002733 }
2734
Ian Rogers19846512012-02-24 11:42:47 -08002735 FixupStaticTrampolines(klass);
2736
Elliott Hughes83df2ac2011-10-11 16:37:54 -07002737 uint64_t t1 = NanoTime();
2738
Ian Rogersbdfb1a52012-01-12 14:05:22 -08002739 bool success = true;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002740 {
Ian Rogers1f539342012-10-03 21:09:42 -07002741 ObjectLock lock(self, klass);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002742
2743 if (self->IsExceptionPending()) {
Elliott Hughes4d0207c2011-10-03 19:14:34 -07002744 WrapExceptionInInitializer();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002745 klass->SetStatus(mirror::Class::kStatusError);
Ian Rogersbdfb1a52012-01-12 14:05:22 -08002746 success = false;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002747 } else {
Elliott Hughes83df2ac2011-10-11 16:37:54 -07002748 RuntimeStats* global_stats = Runtime::Current()->GetStats();
2749 RuntimeStats* thread_stats = self->GetStats();
2750 ++global_stats->class_init_count;
2751 ++thread_stats->class_init_count;
2752 global_stats->class_init_time_ns += (t1 - t0);
2753 thread_stats->class_init_time_ns += (t1 - t0);
Ian Rogers0045a292012-03-31 21:08:41 -07002754 // Set the class as initialized except if we can't initialize static fields and static field
2755 // initialization is necessary.
2756 if (!can_init_statics && has_static_field_initializers) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002757 klass->SetStatus(mirror::Class::kStatusVerified); // Don't leave class in initializing state.
Ian Rogers0045a292012-03-31 21:08:41 -07002758 success = false;
2759 } else {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002760 klass->SetStatus(mirror::Class::kStatusInitialized);
Ian Rogers0045a292012-03-31 21:08:41 -07002761 }
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -08002762 if (VLOG_IS_ON(class_linker)) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002763 ClassHelper kh(klass);
2764 LOG(INFO) << "Initialized class " << kh.GetDescriptor() << " from " << kh.GetLocation();
Brian Carlstromae826982011-11-09 01:33:42 -08002765 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002766 }
2767 lock.NotifyAll();
2768 }
Ian Rogersbdfb1a52012-01-12 14:05:22 -08002769 return success;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002770}
2771
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002772bool ClassLinker::WaitForInitializeClass(mirror::Class* klass, Thread* self, ObjectLock& lock)
Ian Rogersb726dcb2012-09-05 08:57:23 -07002773 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002774 while (true) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -07002775 self->AssertNoPendingException();
Ian Rogers05f30572013-02-20 12:13:11 -08002776 lock.WaitIgnoringInterrupts();
Brian Carlstromd1422f82011-09-28 11:37:09 -07002777
2778 // When we wake up, repeat the test for init-in-progress. If
2779 // there's an exception pending (only possible if
2780 // "interruptShouldThrow" was set), bail out.
2781 if (self->IsExceptionPending()) {
Elliott Hughes4d0207c2011-10-03 19:14:34 -07002782 WrapExceptionInInitializer();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002783 klass->SetStatus(mirror::Class::kStatusError);
Brian Carlstromd1422f82011-09-28 11:37:09 -07002784 return false;
2785 }
2786 // Spurious wakeup? Go back to waiting.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002787 if (klass->GetStatus() == mirror::Class::kStatusInitializing) {
Brian Carlstromd1422f82011-09-28 11:37:09 -07002788 continue;
2789 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002790 if (klass->GetStatus() == mirror::Class::kStatusVerified && Runtime::Current()->IsCompiler()) {
Ian Rogers3d1548d2012-09-24 14:08:03 -07002791 // Compile time initialization failed.
2792 return false;
2793 }
Brian Carlstromd1422f82011-09-28 11:37:09 -07002794 if (klass->IsErroneous()) {
2795 // The caller wants an exception, but it was thrown in a
2796 // different thread. Synthesize one here.
Brian Carlstromdf143242011-10-10 18:05:34 -07002797 ThrowNoClassDefFoundError("<clinit> failed for class %s; see exception in other thread",
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002798 PrettyDescriptor(klass).c_str());
Brian Carlstromd1422f82011-09-28 11:37:09 -07002799 return false;
2800 }
2801 if (klass->IsInitialized()) {
2802 return true;
2803 }
2804 LOG(FATAL) << "Unexpected class status. " << PrettyClass(klass) << " is " << klass->GetStatus();
2805 }
2806 LOG(FATAL) << "Not Reached" << PrettyClass(klass);
2807}
2808
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002809bool ClassLinker::ValidateSuperClassDescriptors(const mirror::Class* klass) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002810 if (klass->IsInterface()) {
2811 return true;
2812 }
2813 // begin with the methods local to the superclass
2814 if (klass->HasSuperClass() &&
2815 klass->GetClassLoader() != klass->GetSuperClass()->GetClassLoader()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002816 const mirror::Class* super = klass->GetSuperClass();
Ian Rogers595799e2012-01-11 17:32:51 -08002817 for (int i = super->GetVTable()->GetLength() - 1; i >= 0; --i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002818 const mirror::AbstractMethod* method = klass->GetVTable()->Get(i);
Ian Rogers595799e2012-01-11 17:32:51 -08002819 if (method != super->GetVTable()->Get(i) &&
2820 !IsSameMethodSignatureInDifferentClassContexts(method, super, klass)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08002821 ThrowLinkageError(klass, "Class %s method %s resolves differently in superclass %s",
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002822 PrettyDescriptor(klass).c_str(), PrettyMethod(method).c_str(),
2823 PrettyDescriptor(super).c_str());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002824 return false;
2825 }
2826 }
2827 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002828 mirror::IfTable* iftable = klass->GetIfTable();
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07002829 for (int32_t i = 0; i < klass->GetIfTableCount(); ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002830 mirror::Class* interface = iftable->GetInterface(i);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002831 if (klass->GetClassLoader() != interface->GetClassLoader()) {
2832 for (size_t j = 0; j < interface->NumVirtualMethods(); ++j) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002833 const mirror::AbstractMethod* method = iftable->GetMethodArray(i)->Get(j);
Ian Rogers595799e2012-01-11 17:32:51 -08002834 if (!IsSameMethodSignatureInDifferentClassContexts(method, interface,
2835 method->GetDeclaringClass())) {
Ian Rogers62d6c772013-02-27 08:32:07 -08002836 ThrowLinkageError(klass, "Class %s method %s resolves differently in interface %s",
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002837 PrettyDescriptor(method->GetDeclaringClass()).c_str(),
2838 PrettyMethod(method).c_str(),
2839 PrettyDescriptor(interface).c_str());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002840 return false;
2841 }
2842 }
2843 }
2844 }
2845 return true;
2846}
2847
Ian Rogers595799e2012-01-11 17:32:51 -08002848// Returns true if classes referenced by the signature of the method are the
2849// same classes in klass1 as they are in klass2.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002850bool ClassLinker::IsSameMethodSignatureInDifferentClassContexts(const mirror::AbstractMethod* method,
2851 const mirror::Class* klass1,
2852 const mirror::Class* klass2) {
Ian Rogers9074b992011-10-26 17:41:55 -07002853 if (klass1 == klass2) {
2854 return true;
Brian Carlstrome10b6972011-09-26 13:49:03 -07002855 }
Ian Rogers4445a7e2012-10-05 17:19:13 -07002856 const DexFile& dex_file = *method->GetDeclaringClass()->GetDexCache()->GetDexFile();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002857 const DexFile::ProtoId& proto_id =
2858 dex_file.GetMethodPrototype(dex_file.GetMethodId(method->GetDexMethodIndex()));
Ian Rogers0571d352011-11-03 19:51:38 -07002859 for (DexFileParameterIterator it(dex_file, proto_id); it.HasNext(); it.Next()) {
2860 const char* descriptor = it.GetDescriptor();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002861 if (descriptor == NULL) {
2862 break;
2863 }
2864 if (descriptor[0] == 'L' || descriptor[0] == '[') {
2865 // Found a non-primitive type.
Ian Rogers595799e2012-01-11 17:32:51 -08002866 if (!IsSameDescriptorInDifferentClassContexts(descriptor, klass1, klass2)) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002867 return false;
2868 }
2869 }
2870 }
2871 // Check the return type
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07002872 const char* descriptor = dex_file.GetReturnTypeDescriptor(proto_id);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002873 if (descriptor[0] == 'L' || descriptor[0] == '[') {
Ian Rogers595799e2012-01-11 17:32:51 -08002874 if (!IsSameDescriptorInDifferentClassContexts(descriptor, klass1, klass2)) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002875 return false;
2876 }
2877 }
2878 return true;
2879}
2880
Ian Rogers595799e2012-01-11 17:32:51 -08002881// Returns true if the descriptor resolves to the same class in the context of klass1 and klass2.
2882bool ClassLinker::IsSameDescriptorInDifferentClassContexts(const char* descriptor,
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002883 const mirror::Class* klass1,
2884 const mirror::Class* klass2) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002885 CHECK(descriptor != NULL);
2886 CHECK(klass1 != NULL);
2887 CHECK(klass2 != NULL);
Ian Rogers9074b992011-10-26 17:41:55 -07002888 if (klass1 == klass2) {
2889 return true;
2890 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002891 mirror::Class* found1 = FindClass(descriptor, klass1->GetClassLoader());
Ian Rogers595799e2012-01-11 17:32:51 -08002892 if (found1 == NULL) {
Carl Shapirob5573532011-07-12 18:22:59 -07002893 Thread::Current()->ClearException();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002894 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002895 mirror::Class* found2 = FindClass(descriptor, klass2->GetClassLoader());
Ian Rogers595799e2012-01-11 17:32:51 -08002896 if (found2 == NULL) {
2897 Thread::Current()->ClearException();
2898 }
2899 return found1 == found2;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002900}
2901
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002902bool ClassLinker::InitializeSuperClass(mirror::Class* klass, bool can_run_clinit, bool can_init_fields) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002903 CHECK(klass != NULL);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002904 if (!klass->IsInterface() && klass->HasSuperClass()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002905 mirror::Class* super_class = klass->GetSuperClass();
Ian Rogers9ffb0392012-09-10 11:56:50 -07002906 if (!super_class->IsInitialized()) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002907 CHECK(!super_class->IsInterface());
Ian Rogers1f539342012-10-03 21:09:42 -07002908 // Must hold lock on object when initializing and setting status.
Ian Rogers05f30572013-02-20 12:13:11 -08002909 Thread* self = Thread::Current();
2910 ObjectLock lock(self, klass);
Ian Rogers0045a292012-03-31 21:08:41 -07002911 bool super_initialized = InitializeClass(super_class, can_run_clinit, can_init_fields);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002912 // TODO: check for a pending exception
2913 if (!super_initialized) {
Brian Carlstrom25c33252011-09-18 15:58:35 -07002914 if (!can_run_clinit) {
Brian Carlstrom4d9716c2012-01-30 01:49:33 -08002915 // Don't set status to error when we can't run <clinit>.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002916 CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusInitializing) << PrettyClass(klass);
2917 klass->SetStatus(mirror::Class::kStatusVerified);
Brian Carlstrom4d9716c2012-01-30 01:49:33 -08002918 return false;
Brian Carlstrom25c33252011-09-18 15:58:35 -07002919 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002920 klass->SetStatus(mirror::Class::kStatusError);
Ian Rogers05f30572013-02-20 12:13:11 -08002921 klass->NotifyAll(self);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002922 return false;
2923 }
2924 }
2925 }
2926 return true;
2927}
2928
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002929bool ClassLinker::EnsureInitialized(mirror::Class* c, bool can_run_clinit, bool can_init_fields) {
Mathieu Chartier155dfe92012-10-09 14:24:49 -07002930 DCHECK(c != NULL);
Elliott Hughesf4c21c92011-08-19 17:31:31 -07002931 if (c->IsInitialized()) {
2932 return true;
2933 }
2934
Elliott Hughes5f791332011-09-15 17:45:30 -07002935 Thread* self = Thread::Current();
Elliott Hughes34e06962012-04-09 13:55:55 -07002936 ScopedThreadStateChange tsc(self, kRunnable);
Ian Rogers0045a292012-03-31 21:08:41 -07002937 bool success = InitializeClass(c, can_run_clinit, can_init_fields);
Ian Rogers595799e2012-01-11 17:32:51 -08002938 if (!success) {
Ian Rogers1bddec32012-02-04 12:27:34 -08002939 CHECK(self->IsExceptionPending() || !can_run_clinit) << PrettyClass(c);
Ian Rogers595799e2012-01-11 17:32:51 -08002940 }
2941 return success;
Elliott Hughesf4c21c92011-08-19 17:31:31 -07002942}
2943
Elliott Hughes5fe594f2011-09-08 12:33:17 -07002944void ClassLinker::ConstructFieldMap(const DexFile& dex_file, const DexFile::ClassDef& dex_class_def,
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002945 mirror::Class* c, SafeMap<uint32_t, mirror::Field*>& field_map) {
2946 mirror::ClassLoader* cl = c->GetClassLoader();
Elliott Hughes5fe594f2011-09-08 12:33:17 -07002947 const byte* class_data = dex_file.GetClassData(dex_class_def);
Ian Rogers0571d352011-11-03 19:51:38 -07002948 ClassDataItemIterator it(dex_file, class_data);
2949 for (size_t i = 0; it.HasNextStaticField(); i++, it.Next()) {
Elliott Hughesa0e18062012-04-13 15:59:59 -07002950 field_map.Put(i, ResolveField(dex_file, it.GetMemberIndex(), c->GetDexCache(), cl, true));
Elliott Hughes5fe594f2011-09-08 12:33:17 -07002951 }
2952}
2953
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002954bool ClassLinker::InitializeStaticFields(mirror::Class* klass) {
Carl Shapiro5fafe2b2011-07-09 15:34:41 -07002955 size_t num_static_fields = klass->NumStaticFields();
2956 if (num_static_fields == 0) {
Ian Rogers0045a292012-03-31 21:08:41 -07002957 return false;
Carl Shapiro5fafe2b2011-07-09 15:34:41 -07002958 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002959 mirror::DexCache* dex_cache = klass->GetDexCache();
Brian Carlstrom4873d462011-08-21 15:23:39 -07002960 // TODO: this seems like the wrong check. do we really want !IsPrimitive && !IsArray?
Brian Carlstromf615a612011-07-23 12:50:34 -07002961 if (dex_cache == NULL) {
Ian Rogers0045a292012-03-31 21:08:41 -07002962 return false;
Carl Shapiro5fafe2b2011-07-09 15:34:41 -07002963 }
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002964 ClassHelper kh(klass);
2965 const DexFile::ClassDef* dex_class_def = kh.GetClassDef();
Brian Carlstromf615a612011-07-23 12:50:34 -07002966 CHECK(dex_class_def != NULL);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08002967 const DexFile& dex_file = kh.GetDexFile();
Brian Carlstrom88f36542012-10-16 23:24:21 -07002968 EncodedStaticFieldValueIterator it(dex_file, dex_cache, klass->GetClassLoader(),
2969 this, *dex_class_def);
Elliott Hughes5fe594f2011-09-08 12:33:17 -07002970
Ian Rogers0571d352011-11-03 19:51:38 -07002971 if (it.HasNext()) {
2972 // We reordered the fields, so we need to be able to map the field indexes to the right fields.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002973 SafeMap<uint32_t, mirror::Field*> field_map;
Ian Rogers0571d352011-11-03 19:51:38 -07002974 ConstructFieldMap(dex_file, *dex_class_def, klass, field_map);
2975 for (size_t i = 0; it.HasNext(); i++, it.Next()) {
Elliott Hughesa0e18062012-04-13 15:59:59 -07002976 it.ReadValueToField(field_map.Get(i));
Carl Shapiro5fafe2b2011-07-09 15:34:41 -07002977 }
Ian Rogers0045a292012-03-31 21:08:41 -07002978 return true;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002979 }
Ian Rogers0045a292012-03-31 21:08:41 -07002980 return false;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002981}
2982
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08002983bool ClassLinker::LinkClass(SirtRef<mirror::Class>& klass,
2984 mirror::ObjectArray<mirror::Class>* interfaces) {
2985 CHECK_EQ(mirror::Class::kStatusLoaded, klass->GetStatus());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002986 if (!LinkSuperClass(klass)) {
2987 return false;
2988 }
Ian Rogersc2b44472011-12-14 21:17:17 -08002989 if (!LinkMethods(klass, interfaces)) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07002990 return false;
2991 }
2992 if (!LinkInstanceFields(klass)) {
2993 return false;
2994 }
Brian Carlstrom4873d462011-08-21 15:23:39 -07002995 if (!LinkStaticFields(klass)) {
2996 return false;
2997 }
2998 CreateReferenceInstanceOffsets(klass);
2999 CreateReferenceStaticOffsets(klass);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003000 CHECK_EQ(mirror::Class::kStatusLoaded, klass->GetStatus());
3001 klass->SetStatus(mirror::Class::kStatusResolved);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003002 return true;
3003}
3004
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003005bool ClassLinker::LoadSuperAndInterfaces(SirtRef<mirror::Class>& klass, const DexFile& dex_file) {
3006 CHECK_EQ(mirror::Class::kStatusIdx, klass->GetStatus());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003007 StringPiece descriptor(dex_file.StringByTypeIdx(klass->GetDexTypeIndex()));
3008 const DexFile::ClassDef* class_def = dex_file.FindClassDef(descriptor);
Ian Rogerscab01012012-01-10 17:35:46 -08003009 CHECK(class_def != NULL);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003010 uint16_t super_class_idx = class_def->superclass_idx_;
3011 if (super_class_idx != DexFile::kDexNoIndex16) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003012 mirror::Class* super_class = ResolveType(dex_file, super_class_idx, klass.get());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003013 if (super_class == NULL) {
Brian Carlstrom65ca0772011-09-24 16:03:08 -07003014 DCHECK(Thread::Current()->IsExceptionPending());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003015 return false;
3016 }
Ian Rogersbe125a92012-01-11 15:19:49 -08003017 // Verify
3018 if (!klass->CanAccess(super_class)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003019 ThrowIllegalAccessError(klass.get(), "Class %s extended by class %s is inaccessible",
3020 PrettyDescriptor(super_class).c_str(),
3021 PrettyDescriptor(klass.get()).c_str());
Ian Rogersbe125a92012-01-11 15:19:49 -08003022 return false;
3023 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003024 klass->SetSuperClass(super_class);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003025 }
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003026 const DexFile::TypeList* interfaces = dex_file.GetInterfacesList(*class_def);
3027 if (interfaces != NULL) {
3028 for (size_t i = 0; i < interfaces->Size(); i++) {
3029 uint16_t idx = interfaces->GetTypeItem(i).type_idx_;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003030 mirror::Class* interface = ResolveType(dex_file, idx, klass.get());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003031 if (interface == NULL) {
3032 DCHECK(Thread::Current()->IsExceptionPending());
3033 return false;
3034 }
3035 // Verify
3036 if (!klass->CanAccess(interface)) {
3037 // TODO: the RI seemed to ignore this in my testing.
Ian Rogers62d6c772013-02-27 08:32:07 -08003038 ThrowIllegalAccessError(klass.get(), "Interface %s implemented by class %s is inaccessible",
3039 PrettyDescriptor(interface).c_str(),
3040 PrettyDescriptor(klass.get()).c_str());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003041 return false;
3042 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003043 }
3044 }
Brian Carlstrom74eb46a2011-08-02 20:10:14 -07003045 // Mark the class as loaded.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003046 klass->SetStatus(mirror::Class::kStatusLoaded);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003047 return true;
3048}
3049
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003050bool ClassLinker::LinkSuperClass(SirtRef<mirror::Class>& klass) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003051 CHECK(!klass->IsPrimitive());
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003052 mirror::Class* super = klass->GetSuperClass();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003053 if (klass.get() == GetClassRoot(kJavaLangObject)) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003054 if (super != NULL) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003055 ThrowClassFormatError(klass.get(), "java.lang.Object must not have a superclass");
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003056 return false;
3057 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003058 return true;
3059 }
3060 if (super == NULL) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003061 ThrowLinkageError(klass.get(), "No superclass defined for class %s",
3062 PrettyDescriptor(klass.get()).c_str());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003063 return false;
3064 }
3065 // Verify
Elliott Hughes4a2b4172011-09-20 17:08:25 -07003066 if (super->IsFinal() || super->IsInterface()) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003067 ThrowIncompatibleClassChangeError(klass.get(), "Superclass %s of %s is %s",
3068 PrettyDescriptor(super).c_str(),
3069 PrettyDescriptor(klass.get()).c_str(),
3070 super->IsFinal() ? "declared final" : "an interface");
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003071 return false;
3072 }
3073 if (!klass->CanAccess(super)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003074 ThrowIllegalAccessError(klass.get(), "Superclass %s is inaccessible to class %s",
3075 PrettyDescriptor(super).c_str(),
3076 PrettyDescriptor(klass.get()).c_str());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003077 return false;
3078 }
Elliott Hughes20cde902011-10-04 17:37:27 -07003079
3080 // Inherit kAccClassIsFinalizable from the superclass in case this class doesn't override finalize.
3081 if (super->IsFinalizable()) {
3082 klass->SetFinalizable();
3083 }
3084
Elliott Hughes2da50362011-10-10 16:57:08 -07003085 // Inherit reference flags (if any) from the superclass.
3086 int reference_flags = (super->GetAccessFlags() & kAccReferenceFlagsMask);
3087 if (reference_flags != 0) {
3088 klass->SetAccessFlags(klass->GetAccessFlags() | reference_flags);
3089 }
Elliott Hughes72ee0ae2011-10-10 17:31:28 -07003090 // Disallow custom direct subclasses of java.lang.ref.Reference.
Elliott Hughesbf61ba32011-10-11 10:53:09 -07003091 if (init_done_ && super == GetClassRoot(kJavaLangRefReference)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003092 ThrowLinkageError(klass.get(),
3093 "Class %s attempts to subclass java.lang.ref.Reference, which is not allowed",
3094 PrettyDescriptor(klass.get()).c_str());
Elliott Hughes72ee0ae2011-10-10 17:31:28 -07003095 return false;
3096 }
Elliott Hughes2da50362011-10-10 16:57:08 -07003097
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003098#ifndef NDEBUG
3099 // Ensure super classes are fully resolved prior to resolving fields..
3100 while (super != NULL) {
Elliott Hughes5fe594f2011-09-08 12:33:17 -07003101 CHECK(super->IsResolved());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003102 super = super->GetSuperClass();
3103 }
3104#endif
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003105 return true;
3106}
3107
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003108// Populate the class vtable and itable. Compute return type indices.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003109bool ClassLinker::LinkMethods(SirtRef<mirror::Class>& klass,
3110 mirror::ObjectArray<mirror::Class>* interfaces) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003111 if (klass->IsInterface()) {
3112 // No vtable.
3113 size_t count = klass->NumVirtualMethods();
3114 if (!IsUint(16, count)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003115 ThrowClassFormatError(klass.get(), "Too many methods on interface: %zd", count);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003116 return false;
3117 }
Carl Shapiro565f5072011-07-10 13:39:43 -07003118 for (size_t i = 0; i < count; ++i) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003119 klass->GetVirtualMethodDuringLinking(i)->SetMethodIndex(i);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003120 }
jeffhaobdb76512011-09-07 11:43:16 -07003121 // Link interface method tables
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003122 return LinkInterfaceMethods(klass, interfaces);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003123 } else {
Elliott Hughesbc258fa2011-10-06 14:45:21 -07003124 // Link virtual and interface method tables
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003125 return LinkVirtualMethods(klass) && LinkInterfaceMethods(klass, interfaces);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003126 }
3127 return true;
3128}
3129
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003130bool ClassLinker::LinkVirtualMethods(SirtRef<mirror::Class>& klass) {
Ian Rogers1f539342012-10-03 21:09:42 -07003131 Thread* self = Thread::Current();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003132 if (klass->HasSuperClass()) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003133 uint32_t max_count = klass->NumVirtualMethods() + klass->GetSuperClass()->GetVTable()->GetLength();
3134 size_t actual_count = klass->GetSuperClass()->GetVTable()->GetLength();
Brian Carlstrom4a96b602011-07-26 16:40:23 -07003135 CHECK_LE(actual_count, max_count);
Brian Carlstroma40f9bc2011-07-26 21:26:07 -07003136 // TODO: do not assign to the vtable field until it is fully constructed.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003137 SirtRef<mirror::ObjectArray<mirror::AbstractMethod> >
Ian Rogers50b35e22012-10-04 10:09:15 -07003138 vtable(self, klass->GetSuperClass()->GetVTable()->CopyOf(self, max_count));
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003139 // See if any of our virtual methods override the superclass.
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003140 MethodHelper local_mh(NULL, this);
3141 MethodHelper super_mh(NULL, this);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003142 for (size_t i = 0; i < klass->NumVirtualMethods(); ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003143 mirror::AbstractMethod* local_method = klass->GetVirtualMethodDuringLinking(i);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003144 local_mh.ChangeMethod(local_method);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003145 size_t j = 0;
Brian Carlstrom4a96b602011-07-26 16:40:23 -07003146 for (; j < actual_count; ++j) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003147 mirror::AbstractMethod* super_method = vtable->Get(j);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003148 super_mh.ChangeMethod(super_method);
Elliott Hughes39717372012-07-13 16:21:23 -07003149 if (local_mh.HasSameNameAndSignature(&super_mh)) {
3150 if (klass->CanAccessMember(super_method->GetDeclaringClass(), super_method->GetAccessFlags())) {
3151 if (super_method->IsFinal()) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003152 ThrowLinkageError(klass.get(), "Method %s overrides final method in class %s",
Elliott Hughes39717372012-07-13 16:21:23 -07003153 PrettyMethod(local_method).c_str(),
3154 super_mh.GetDeclaringClassDescriptor());
3155 return false;
3156 }
3157 vtable->Set(j, local_method);
3158 local_method->SetMethodIndex(j);
3159 break;
3160 } else {
3161 LOG(WARNING) << "Before Android 4.1, method " << PrettyMethod(local_method)
3162 << " would have incorrectly overridden the package-private method in "
3163 << PrettyDescriptor(super_mh.GetDeclaringClassDescriptor());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003164 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003165 }
3166 }
Brian Carlstrom4a96b602011-07-26 16:40:23 -07003167 if (j == actual_count) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003168 // Not overriding, append.
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003169 vtable->Set(actual_count, local_method);
3170 local_method->SetMethodIndex(actual_count);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003171 actual_count += 1;
3172 }
3173 }
3174 if (!IsUint(16, actual_count)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003175 ThrowClassFormatError(klass.get(), "Too many methods defined on class: %zd", actual_count);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003176 return false;
3177 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003178 // Shrink vtable if possible
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003179 CHECK_LE(actual_count, max_count);
3180 if (actual_count < max_count) {
Ian Rogers50b35e22012-10-04 10:09:15 -07003181 vtable.reset(vtable->CopyOf(self, actual_count));
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003182 }
Ian Rogers30fab402012-01-23 15:43:46 -08003183 klass->SetVTable(vtable.get());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003184 } else {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003185 CHECK(klass.get() == GetClassRoot(kJavaLangObject));
Brian Carlstroma40f9bc2011-07-26 21:26:07 -07003186 uint32_t num_virtual_methods = klass->NumVirtualMethods();
Brian Carlstroma40f9bc2011-07-26 21:26:07 -07003187 if (!IsUint(16, num_virtual_methods)) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003188 ThrowClassFormatError(klass.get(), "Too many methods: %d", num_virtual_methods);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003189 return false;
3190 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003191 SirtRef<mirror::ObjectArray<mirror::AbstractMethod> >
Ian Rogers4445a7e2012-10-05 17:19:13 -07003192 vtable(self, AllocMethodArray(self, num_virtual_methods));
Brian Carlstroma40f9bc2011-07-26 21:26:07 -07003193 for (size_t i = 0; i < num_virtual_methods; ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003194 mirror::AbstractMethod* virtual_method = klass->GetVirtualMethodDuringLinking(i);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003195 vtable->Set(i, virtual_method);
3196 virtual_method->SetMethodIndex(i & 0xFFFF);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003197 }
Brian Carlstrom40381fb2011-10-19 14:13:40 -07003198 klass->SetVTable(vtable.get());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003199 }
3200 return true;
3201}
3202
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003203bool ClassLinker::LinkInterfaceMethods(SirtRef<mirror::Class>& klass,
3204 mirror::ObjectArray<mirror::Class>* interfaces) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003205 size_t super_ifcount;
3206 if (klass->HasSuperClass()) {
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07003207 super_ifcount = klass->GetSuperClass()->GetIfTableCount();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003208 } else {
3209 super_ifcount = 0;
3210 }
Brian Carlstrom913af1b2011-07-23 21:41:13 -07003211 size_t ifcount = super_ifcount;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003212 ClassHelper kh(klass.get(), this);
Ian Rogersd24e2642012-06-06 21:21:43 -07003213 uint32_t num_interfaces = interfaces == NULL ? kh.NumDirectInterfaces() : interfaces->GetLength();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003214 ifcount += num_interfaces;
3215 for (size_t i = 0; i < num_interfaces; i++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003216 mirror::Class* interface = interfaces == NULL ? kh.GetDirectInterface(i) : interfaces->Get(i);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003217 ifcount += interface->GetIfTableCount();
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003218 }
Brian Carlstrom913af1b2011-07-23 21:41:13 -07003219 if (ifcount == 0) {
Ian Rogers9bc81912012-10-11 21:43:36 -07003220 // Class implements no interfaces.
3221 DCHECK_EQ(klass->GetIfTableCount(), 0);
3222 DCHECK(klass->GetIfTable() == NULL);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003223 return true;
3224 }
Ian Rogers9bc81912012-10-11 21:43:36 -07003225 if (ifcount == super_ifcount) {
3226 // Class implements same interfaces as parent, are any of these not marker interfaces?
3227 bool has_non_marker_interface = false;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003228 mirror::IfTable* super_iftable = klass->GetSuperClass()->GetIfTable();
Ian Rogers9bc81912012-10-11 21:43:36 -07003229 for (size_t i = 0; i < ifcount; ++i) {
3230 if (super_iftable->GetMethodArrayCount(i) > 0) {
3231 has_non_marker_interface = true;
3232 break;
3233 }
3234 }
3235 if (!has_non_marker_interface) {
3236 // Class just inherits marker interfaces from parent so recycle parent's iftable.
3237 klass->SetIfTable(super_iftable);
3238 return true;
3239 }
3240 }
Ian Rogers1f539342012-10-03 21:09:42 -07003241 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003242 SirtRef<mirror::IfTable> iftable(self, AllocIfTable(self, ifcount));
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003243 if (super_ifcount != 0) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003244 mirror::IfTable* super_iftable = klass->GetSuperClass()->GetIfTable();
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07003245 for (size_t i = 0; i < super_ifcount; i++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003246 mirror::Class* super_interface = super_iftable->GetInterface(i);
Ian Rogers9bc81912012-10-11 21:43:36 -07003247 iftable->SetInterface(i, super_interface);
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07003248 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003249 }
3250 // Flatten the interface inheritance hierarchy.
3251 size_t idx = super_ifcount;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003252 for (size_t i = 0; i < num_interfaces; i++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003253 mirror::Class* interface = interfaces == NULL ? kh.GetDirectInterface(i) : interfaces->Get(i);
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07003254 DCHECK(interface != NULL);
3255 if (!interface->IsInterface()) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003256 ClassHelper ih(interface);
Ian Rogers62d6c772013-02-27 08:32:07 -08003257 ThrowIncompatibleClassChangeError(klass.get(), "Class %s implements non-interface class %s",
3258 PrettyDescriptor(klass.get()).c_str(),
3259 PrettyDescriptor(ih.GetDescriptor()).c_str());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003260 return false;
3261 }
Ian Rogersb52b01a2012-01-12 17:01:38 -08003262 // Check if interface is already in iftable
3263 bool duplicate = false;
3264 for (size_t j = 0; j < idx; j++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003265 mirror::Class* existing_interface = iftable->GetInterface(j);
Ian Rogersb52b01a2012-01-12 17:01:38 -08003266 if (existing_interface == interface) {
3267 duplicate = true;
3268 break;
3269 }
3270 }
3271 if (!duplicate) {
3272 // Add this non-duplicate interface.
Ian Rogers9bc81912012-10-11 21:43:36 -07003273 iftable->SetInterface(idx++, interface);
Ian Rogersb52b01a2012-01-12 17:01:38 -08003274 // Add this interface's non-duplicate super-interfaces.
3275 for (int32_t j = 0; j < interface->GetIfTableCount(); j++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003276 mirror::Class* super_interface = interface->GetIfTable()->GetInterface(j);
Ian Rogersb52b01a2012-01-12 17:01:38 -08003277 bool super_duplicate = false;
3278 for (size_t k = 0; k < idx; k++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003279 mirror::Class* existing_interface = iftable->GetInterface(k);
Ian Rogersb52b01a2012-01-12 17:01:38 -08003280 if (existing_interface == super_interface) {
3281 super_duplicate = true;
3282 break;
3283 }
3284 }
3285 if (!super_duplicate) {
Ian Rogers9bc81912012-10-11 21:43:36 -07003286 iftable->SetInterface(idx++, super_interface);
Ian Rogersb52b01a2012-01-12 17:01:38 -08003287 }
3288 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003289 }
3290 }
Ian Rogersb52b01a2012-01-12 17:01:38 -08003291 // Shrink iftable in case duplicates were found
3292 if (idx < ifcount) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003293 iftable.reset(down_cast<mirror::IfTable*>(iftable->CopyOf(self, idx * mirror::IfTable::kMax)));
Ian Rogersb52b01a2012-01-12 17:01:38 -08003294 ifcount = idx;
3295 } else {
3296 CHECK_EQ(idx, ifcount);
3297 }
Brian Carlstrom40381fb2011-10-19 14:13:40 -07003298 klass->SetIfTable(iftable.get());
Elliott Hughes4681c802011-09-25 18:04:37 -07003299
3300 // If we're an interface, we don't need the vtable pointers, so we're done.
Ian Rogers9bc81912012-10-11 21:43:36 -07003301 if (klass->IsInterface()) {
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003302 return true;
3303 }
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003304 std::vector<mirror::AbstractMethod*> miranda_list;
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003305 MethodHelper vtable_mh(NULL, this);
3306 MethodHelper interface_mh(NULL, this);
Brian Carlstrom4b620ff2011-09-11 01:11:01 -07003307 for (size_t i = 0; i < ifcount; ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003308 mirror::Class* interface = iftable->GetInterface(i);
Ian Rogers9bc81912012-10-11 21:43:36 -07003309 size_t num_methods = interface->NumVirtualMethods();
3310 if (num_methods > 0) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003311 mirror::ObjectArray<mirror::AbstractMethod>* method_array =
3312 AllocMethodArray(self, num_methods);
Ian Rogers9bc81912012-10-11 21:43:36 -07003313 iftable->SetMethodArray(i, method_array);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003314 mirror::ObjectArray<mirror::AbstractMethod>* vtable = klass->GetVTableDuringLinking();
Ian Rogers62d6c772013-02-27 08:32:07 -08003315 for (size_t j = 0; j < num_methods; ++j) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003316 mirror::AbstractMethod* interface_method = interface->GetVirtualMethod(j);
Ian Rogers9bc81912012-10-11 21:43:36 -07003317 interface_mh.ChangeMethod(interface_method);
3318 int32_t k;
3319 // For each method listed in the interface's method list, find the
3320 // matching method in our class's method list. We want to favor the
3321 // subclass over the superclass, which just requires walking
3322 // back from the end of the vtable. (This only matters if the
3323 // superclass defines a private method and this class redefines
3324 // it -- otherwise it would use the same vtable slot. In .dex files
3325 // those don't end up in the virtual method table, so it shouldn't
3326 // matter which direction we go. We walk it backward anyway.)
3327 for (k = vtable->GetLength() - 1; k >= 0; --k) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003328 mirror::AbstractMethod* vtable_method = vtable->Get(k);
Ian Rogers9bc81912012-10-11 21:43:36 -07003329 vtable_mh.ChangeMethod(vtable_method);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003330 if (interface_mh.HasSameNameAndSignature(&vtable_mh)) {
Elliott Hughes68243612013-02-22 17:16:07 -08003331 if (!vtable_method->IsAbstract() && !vtable_method->IsPublic()) {
Ian Rogers62d6c772013-02-27 08:32:07 -08003332 ThrowIllegalAccessError(klass.get(),
3333 "Method '%s' implementing interface method '%s' is not public",
3334 PrettyMethod(vtable_method).c_str(),
3335 PrettyMethod(interface_method).c_str());
Ian Rogers9bc81912012-10-11 21:43:36 -07003336 return false;
3337 }
3338 method_array->Set(j, vtable_method);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003339 break;
3340 }
3341 }
Ian Rogers9bc81912012-10-11 21:43:36 -07003342 if (k < 0) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003343 SirtRef<mirror::AbstractMethod> miranda_method(self, NULL);
Ian Rogers9bc81912012-10-11 21:43:36 -07003344 for (size_t mir = 0; mir < miranda_list.size(); mir++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003345 mirror::AbstractMethod* mir_method = miranda_list[mir];
Ian Rogers9bc81912012-10-11 21:43:36 -07003346 vtable_mh.ChangeMethod(mir_method);
3347 if (interface_mh.HasSameNameAndSignature(&vtable_mh)) {
3348 miranda_method.reset(miranda_list[mir]);
3349 break;
3350 }
3351 }
3352 if (miranda_method.get() == NULL) {
3353 // point the interface table at a phantom slot
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003354 miranda_method.reset(down_cast<mirror::AbstractMethod*>(interface_method->Clone(self)));
Ian Rogers9bc81912012-10-11 21:43:36 -07003355 miranda_list.push_back(miranda_method.get());
3356 }
3357 method_array->Set(j, miranda_method.get());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003358 }
3359 }
3360 }
3361 }
Elliott Hughes4681c802011-09-25 18:04:37 -07003362 if (!miranda_list.empty()) {
Brian Carlstrom913af1b2011-07-23 21:41:13 -07003363 int old_method_count = klass->NumVirtualMethods();
Elliott Hughes4681c802011-09-25 18:04:37 -07003364 int new_method_count = old_method_count + miranda_list.size();
Brian Carlstrom27ec9612011-09-19 20:20:38 -07003365 klass->SetVirtualMethods((old_method_count == 0)
Ian Rogers4445a7e2012-10-05 17:19:13 -07003366 ? AllocMethodArray(self, new_method_count)
Ian Rogers50b35e22012-10-04 10:09:15 -07003367 : klass->GetVirtualMethods()->CopyOf(self, new_method_count));
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003368
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003369 SirtRef<mirror::ObjectArray<mirror::AbstractMethod> >
3370 vtable(self, klass->GetVTableDuringLinking());
Ian Rogers30fab402012-01-23 15:43:46 -08003371 CHECK(vtable.get() != NULL);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003372 int old_vtable_count = vtable->GetLength();
Elliott Hughes4681c802011-09-25 18:04:37 -07003373 int new_vtable_count = old_vtable_count + miranda_list.size();
Ian Rogers50b35e22012-10-04 10:09:15 -07003374 vtable.reset(vtable->CopyOf(self, new_vtable_count));
Elliott Hughes4681c802011-09-25 18:04:37 -07003375 for (size_t i = 0; i < miranda_list.size(); ++i) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003376 mirror::AbstractMethod* method = miranda_list[i];
Ian Rogers9074b992011-10-26 17:41:55 -07003377 // Leave the declaring class alone as type indices are relative to it
Brian Carlstrom92827a52011-10-10 15:50:01 -07003378 method->SetAccessFlags(method->GetAccessFlags() | kAccMiranda);
3379 method->SetMethodIndex(0xFFFF & (old_vtable_count + i));
3380 klass->SetVirtualMethod(old_method_count + i, method);
3381 vtable->Set(old_vtable_count + i, method);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003382 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003383 // TODO: do not assign to the vtable field until it is fully constructed.
Ian Rogers30fab402012-01-23 15:43:46 -08003384 klass->SetVTable(vtable.get());
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003385 }
Elliott Hughes4681c802011-09-25 18:04:37 -07003386
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003387 mirror::ObjectArray<mirror::AbstractMethod>* vtable = klass->GetVTableDuringLinking();
Elliott Hughes4681c802011-09-25 18:04:37 -07003388 for (int i = 0; i < vtable->GetLength(); ++i) {
3389 CHECK(vtable->Get(i) != NULL);
3390 }
3391
3392// klass->DumpClass(std::cerr, Class::kDumpClassFullDetail);
3393
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003394 return true;
3395}
3396
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003397bool ClassLinker::LinkInstanceFields(SirtRef<mirror::Class>& klass) {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07003398 CHECK(klass.get() != NULL);
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003399 return LinkFields(klass, false);
Brian Carlstrom4873d462011-08-21 15:23:39 -07003400}
3401
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003402bool ClassLinker::LinkStaticFields(SirtRef<mirror::Class>& klass) {
Brian Carlstrom40381fb2011-10-19 14:13:40 -07003403 CHECK(klass.get() != NULL);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003404 size_t allocated_class_size = klass->GetClassSize();
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003405 bool success = LinkFields(klass, true);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003406 CHECK_EQ(allocated_class_size, klass->GetClassSize());
Brian Carlstrom4873d462011-08-21 15:23:39 -07003407 return success;
3408}
3409
Brian Carlstromdbc05252011-09-09 01:59:59 -07003410struct LinkFieldsComparator {
Ian Rogers00f7d0e2012-07-19 15:28:27 -07003411 explicit LinkFieldsComparator(FieldHelper* fh)
Ian Rogersb726dcb2012-09-05 08:57:23 -07003412 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
Ian Rogers00f7d0e2012-07-19 15:28:27 -07003413 : fh_(fh) {}
3414 // No thread safety analysis as will be called from STL. Checked lock held in constructor.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003415 bool operator()(const mirror::Field* field1, const mirror::Field* field2)
3416 NO_THREAD_SAFETY_ANALYSIS {
Brian Carlstromdbc05252011-09-09 01:59:59 -07003417 // First come reference fields, then 64-bit, and finally 32-bit
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003418 fh_->ChangeField(field1);
3419 Primitive::Type type1 = fh_->GetTypeAsPrimitiveType();
3420 fh_->ChangeField(field2);
3421 Primitive::Type type2 = fh_->GetTypeAsPrimitiveType();
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07003422 bool isPrimitive1 = type1 != Primitive::kPrimNot;
3423 bool isPrimitive2 = type2 != Primitive::kPrimNot;
3424 bool is64bit1 = isPrimitive1 && (type1 == Primitive::kPrimLong || type1 == Primitive::kPrimDouble);
3425 bool is64bit2 = isPrimitive2 && (type2 == Primitive::kPrimLong || type2 == Primitive::kPrimDouble);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003426 int order1 = (!isPrimitive1 ? 0 : (is64bit1 ? 1 : 2));
3427 int order2 = (!isPrimitive2 ? 0 : (is64bit2 ? 1 : 2));
3428 if (order1 != order2) {
3429 return order1 < order2;
3430 }
3431
3432 // same basic group? then sort by string.
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003433 fh_->ChangeField(field1);
3434 StringPiece name1(fh_->GetName());
3435 fh_->ChangeField(field2);
3436 StringPiece name2(fh_->GetName());
Brian Carlstromdbc05252011-09-09 01:59:59 -07003437 return name1 < name2;
3438 }
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003439
3440 FieldHelper* fh_;
Brian Carlstromdbc05252011-09-09 01:59:59 -07003441};
3442
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003443bool ClassLinker::LinkFields(SirtRef<mirror::Class>& klass, bool is_static) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003444 size_t num_fields =
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003445 is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003446
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003447 mirror::ObjectArray<mirror::Field>* fields =
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003448 is_static ? klass->GetSFields() : klass->GetIFields();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003449
3450 // Initialize size and field_offset
Brian Carlstrom693267a2011-09-06 09:25:34 -07003451 size_t size;
3452 MemberOffset field_offset(0);
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003453 if (is_static) {
3454 size = klass->GetClassSize();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003455 field_offset = mirror::Class::FieldsOffset();
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003456 } else {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003457 mirror::Class* super_class = klass->GetSuperClass();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003458 if (super_class != NULL) {
Elliott Hughes5fe594f2011-09-08 12:33:17 -07003459 CHECK(super_class->IsResolved());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003460 field_offset = MemberOffset(super_class->GetObjectSize());
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003461 }
3462 size = field_offset.Uint32Value();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003463 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003464
Brian Carlstromdbc05252011-09-09 01:59:59 -07003465 CHECK_EQ(num_fields == 0, fields == NULL);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003466
Brian Carlstromdbc05252011-09-09 01:59:59 -07003467 // we want a relatively stable order so that adding new fields
Elliott Hughesadb460d2011-10-05 17:02:34 -07003468 // minimizes disruption of C++ version such as Class and Method.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003469 std::deque<mirror::Field*> grouped_and_sorted_fields;
Brian Carlstromdbc05252011-09-09 01:59:59 -07003470 for (size_t i = 0; i < num_fields; i++) {
3471 grouped_and_sorted_fields.push_back(fields->Get(i));
3472 }
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003473 FieldHelper fh(NULL, this);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003474 std::sort(grouped_and_sorted_fields.begin(),
3475 grouped_and_sorted_fields.end(),
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003476 LinkFieldsComparator(&fh));
Brian Carlstromdbc05252011-09-09 01:59:59 -07003477
3478 // References should be at the front.
3479 size_t current_field = 0;
3480 size_t num_reference_fields = 0;
3481 for (; current_field < num_fields; current_field++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003482 mirror::Field* field = grouped_and_sorted_fields.front();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003483 fh.ChangeField(field);
3484 Primitive::Type type = fh.GetTypeAsPrimitiveType();
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07003485 bool isPrimitive = type != Primitive::kPrimNot;
Brian Carlstromdbc05252011-09-09 01:59:59 -07003486 if (isPrimitive) {
Brian Carlstrom7934ac22013-07-26 10:54:15 -07003487 break; // past last reference, move on to the next phase
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003488 }
Brian Carlstromdbc05252011-09-09 01:59:59 -07003489 grouped_and_sorted_fields.pop_front();
3490 num_reference_fields++;
3491 fields->Set(current_field, field);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003492 field->SetOffset(field_offset);
3493 field_offset = MemberOffset(field_offset.Uint32Value() + sizeof(uint32_t));
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003494 }
3495
3496 // Now we want to pack all of the double-wide fields together. If
3497 // we're not aligned, though, we want to shuffle one 32-bit field
3498 // into place. If we can't find one, we'll have to pad it.
Elliott Hughes06b37d92011-10-16 11:51:29 -07003499 if (current_field != num_fields && !IsAligned<8>(field_offset.Uint32Value())) {
Brian Carlstromdbc05252011-09-09 01:59:59 -07003500 for (size_t i = 0; i < grouped_and_sorted_fields.size(); i++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003501 mirror::Field* field = grouped_and_sorted_fields[i];
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003502 fh.ChangeField(field);
3503 Primitive::Type type = fh.GetTypeAsPrimitiveType();
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07003504 CHECK(type != Primitive::kPrimNot); // should only be working on primitive types
3505 if (type == Primitive::kPrimLong || type == Primitive::kPrimDouble) {
Brian Carlstromdbc05252011-09-09 01:59:59 -07003506 continue;
3507 }
3508 fields->Set(current_field++, field);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003509 field->SetOffset(field_offset);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003510 // drop the consumed field
3511 grouped_and_sorted_fields.erase(grouped_and_sorted_fields.begin() + i);
3512 break;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003513 }
Brian Carlstromdbc05252011-09-09 01:59:59 -07003514 // whether we found a 32-bit field for padding or not, we advance
3515 field_offset = MemberOffset(field_offset.Uint32Value() + sizeof(uint32_t));
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003516 }
3517
3518 // Alignment is good, shuffle any double-wide fields forward, and
3519 // finish assigning field offsets to all fields.
Elliott Hughes06b37d92011-10-16 11:51:29 -07003520 DCHECK(current_field == num_fields || IsAligned<8>(field_offset.Uint32Value()));
Brian Carlstromdbc05252011-09-09 01:59:59 -07003521 while (!grouped_and_sorted_fields.empty()) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003522 mirror::Field* field = grouped_and_sorted_fields.front();
Brian Carlstromdbc05252011-09-09 01:59:59 -07003523 grouped_and_sorted_fields.pop_front();
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003524 fh.ChangeField(field);
3525 Primitive::Type type = fh.GetTypeAsPrimitiveType();
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07003526 CHECK(type != Primitive::kPrimNot); // should only be working on primitive types
Brian Carlstromdbc05252011-09-09 01:59:59 -07003527 fields->Set(current_field, field);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003528 field->SetOffset(field_offset);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003529 field_offset = MemberOffset(field_offset.Uint32Value() +
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07003530 ((type == Primitive::kPrimLong || type == Primitive::kPrimDouble)
Brian Carlstromdbc05252011-09-09 01:59:59 -07003531 ? sizeof(uint64_t)
3532 : sizeof(uint32_t)));
3533 current_field++;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003534 }
3535
Elliott Hughesadb460d2011-10-05 17:02:34 -07003536 // We lie to the GC about the java.lang.ref.Reference.referent field, so it doesn't scan it.
Ian Rogers64b6d142012-10-29 16:34:15 -07003537 if (!is_static &&
3538 StringPiece(ClassHelper(klass.get(), this).GetDescriptor()) == "Ljava/lang/ref/Reference;") {
Elliott Hughesadb460d2011-10-05 17:02:34 -07003539 // We know there are no non-reference fields in the Reference classes, and we know
3540 // that 'referent' is alphabetically last, so this is easy...
3541 CHECK_EQ(num_reference_fields, num_fields);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003542 fh.ChangeField(fields->Get(num_fields - 1));
Elliott Hughesba8eee12012-01-24 20:25:24 -08003543 CHECK_STREQ(fh.GetName(), "referent");
Elliott Hughesadb460d2011-10-05 17:02:34 -07003544 --num_reference_fields;
3545 }
3546
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003547#ifndef NDEBUG
Brian Carlstrombe977852011-07-19 14:54:54 -07003548 // Make sure that all reference fields appear before
3549 // non-reference fields, and all double-wide fields are aligned.
3550 bool seen_non_ref = false;
Brian Carlstromdbc05252011-09-09 01:59:59 -07003551 for (size_t i = 0; i < num_fields; i++) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003552 mirror::Field* field = fields->Get(i);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003553 if (false) { // enable to debug field layout
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003554 LOG(INFO) << "LinkFields: " << (is_static ? "static" : "instance")
Brian Carlstrom40381fb2011-10-19 14:13:40 -07003555 << " class=" << PrettyClass(klass.get())
Brian Carlstrom65ca0772011-09-24 16:03:08 -07003556 << " field=" << PrettyField(field)
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003557 << " offset=" << field->GetField32(MemberOffset(mirror::Field::OffsetOffset()),
3558 false);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003559 }
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003560 fh.ChangeField(field);
3561 Primitive::Type type = fh.GetTypeAsPrimitiveType();
Brian Carlstrom6b4ef022011-10-23 14:59:04 -07003562 bool is_primitive = type != Primitive::kPrimNot;
Ian Rogers64b6d142012-10-29 16:34:15 -07003563 if (StringPiece(ClassHelper(klass.get(), this).GetDescriptor()) == "Ljava/lang/ref/Reference;" &&
3564 StringPiece(fh.GetName()) == "referent") {
Brian Carlstrom7934ac22013-07-26 10:54:15 -07003565 is_primitive = true; // We lied above, so we have to expect a lie here.
Elliott Hughesadb460d2011-10-05 17:02:34 -07003566 }
3567 if (is_primitive) {
Brian Carlstrombe977852011-07-19 14:54:54 -07003568 if (!seen_non_ref) {
3569 seen_non_ref = true;
Brian Carlstrom4873d462011-08-21 15:23:39 -07003570 DCHECK_EQ(num_reference_fields, i);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003571 }
Brian Carlstrombe977852011-07-19 14:54:54 -07003572 } else {
3573 DCHECK(!seen_non_ref);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003574 }
3575 }
Brian Carlstrombe977852011-07-19 14:54:54 -07003576 if (!seen_non_ref) {
Brian Carlstrom4873d462011-08-21 15:23:39 -07003577 DCHECK_EQ(num_fields, num_reference_fields);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003578 }
3579#endif
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003580 size = field_offset.Uint32Value();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003581 // Update klass
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003582 if (is_static) {
3583 klass->SetNumReferenceStaticFields(num_reference_fields);
3584 klass->SetClassSize(size);
3585 } else {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003586 klass->SetNumReferenceInstanceFields(num_reference_fields);
Brian Carlstromdbc05252011-09-09 01:59:59 -07003587 if (!klass->IsVariableSize()) {
Brian Carlstrom62cd0982013-06-03 11:30:25 -07003588 DCHECK_GE(size, sizeof(mirror::Object)) << ClassHelper(klass.get(), this).GetDescriptor();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003589 klass->SetObjectSize(size);
3590 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003591 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003592 return true;
3593}
3594
3595// Set the bitmap of reference offsets, refOffsets, from the ifields
3596// list.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003597void ClassLinker::CreateReferenceInstanceOffsets(SirtRef<mirror::Class>& klass) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003598 uint32_t reference_offsets = 0;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003599 mirror::Class* super_class = klass->GetSuperClass();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003600 if (super_class != NULL) {
3601 reference_offsets = super_class->GetReferenceInstanceOffsets();
Brian Carlstrom4873d462011-08-21 15:23:39 -07003602 // If our superclass overflowed, we don't stand a chance.
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003603 if (reference_offsets == CLASS_WALK_SUPER) {
3604 klass->SetReferenceInstanceOffsets(reference_offsets);
Brian Carlstrom4873d462011-08-21 15:23:39 -07003605 return;
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003606 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003607 }
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003608 CreateReferenceOffsets(klass, false, reference_offsets);
Brian Carlstrom4873d462011-08-21 15:23:39 -07003609}
3610
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003611void ClassLinker::CreateReferenceStaticOffsets(SirtRef<mirror::Class>& klass) {
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003612 CreateReferenceOffsets(klass, true, 0);
Brian Carlstrom4873d462011-08-21 15:23:39 -07003613}
3614
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003615void ClassLinker::CreateReferenceOffsets(SirtRef<mirror::Class>& klass, bool is_static,
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003616 uint32_t reference_offsets) {
3617 size_t num_reference_fields =
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003618 is_static ? klass->NumReferenceStaticFieldsDuringLinking()
3619 : klass->NumReferenceInstanceFieldsDuringLinking();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003620 const mirror::ObjectArray<mirror::Field>* fields =
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003621 is_static ? klass->GetSFields() : klass->GetIFields();
Brian Carlstrom4873d462011-08-21 15:23:39 -07003622 // All of the fields that contain object references are guaranteed
3623 // to be at the beginning of the fields list.
3624 for (size_t i = 0; i < num_reference_fields; ++i) {
3625 // Note that byte_offset is the offset from the beginning of
3626 // object, not the offset into instance data
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003627 const mirror::Field* field = fields->Get(i);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003628 MemberOffset byte_offset = field->GetOffsetDuringLinking();
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003629 CHECK_EQ(byte_offset.Uint32Value() & (CLASS_OFFSET_ALIGNMENT - 1), 0U);
3630 if (CLASS_CAN_ENCODE_OFFSET(byte_offset.Uint32Value())) {
3631 uint32_t new_bit = CLASS_BIT_FROM_OFFSET(byte_offset.Uint32Value());
Brian Carlstrom4873d462011-08-21 15:23:39 -07003632 CHECK_NE(new_bit, 0U);
3633 reference_offsets |= new_bit;
3634 } else {
3635 reference_offsets = CLASS_WALK_SUPER;
3636 break;
3637 }
3638 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003639 // Update fields in klass
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003640 if (is_static) {
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003641 klass->SetReferenceStaticOffsets(reference_offsets);
Brian Carlstrom3320cf42011-10-04 14:58:28 -07003642 } else {
3643 klass->SetReferenceInstanceOffsets(reference_offsets);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003644 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003645}
3646
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003647mirror::String* ClassLinker::ResolveString(const DexFile& dex_file,
3648 uint32_t string_idx, mirror::DexCache* dex_cache) {
Brian Carlstrom7d776242012-03-06 23:05:49 -08003649 DCHECK(dex_cache != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003650 mirror::String* resolved = dex_cache->GetResolvedString(string_idx);
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003651 if (resolved != NULL) {
3652 return resolved;
3653 }
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003654 const DexFile::StringId& string_id = dex_file.GetStringId(string_idx);
3655 int32_t utf16_length = dex_file.GetStringLength(string_id);
3656 const char* utf8_data = dex_file.GetStringData(string_id);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003657 mirror::String* string = intern_table_->InternStrong(utf16_length, utf8_data);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003658 dex_cache->SetResolvedString(string_idx, string);
3659 return string;
3660}
3661
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003662mirror::Class* ClassLinker::ResolveType(const DexFile& dex_file,
3663 uint16_t type_idx,
3664 mirror::DexCache* dex_cache,
3665 mirror::ClassLoader* class_loader) {
Brian Carlstrom7d776242012-03-06 23:05:49 -08003666 DCHECK(dex_cache != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003667 mirror::Class* resolved = dex_cache->GetResolvedType(type_idx);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003668 if (resolved == NULL) {
Ian Rogers0571d352011-11-03 19:51:38 -07003669 const char* descriptor = dex_file.StringByTypeIdx(type_idx);
Brian Carlstromaded5f72011-10-07 17:15:04 -07003670 resolved = FindClass(descriptor, class_loader);
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003671 if (resolved != NULL) {
Jesse Wilson254db0f2011-11-16 16:44:11 -05003672 // TODO: we used to throw here if resolved's class loader was not the
3673 // boot class loader. This was to permit different classes with the
3674 // same name to be loaded simultaneously by different loaders
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003675 dex_cache->SetResolvedType(type_idx, resolved);
3676 } else {
Ian Rogers62d6c772013-02-27 08:32:07 -08003677 Thread* self = Thread::Current();
3678 CHECK(self->IsExceptionPending())
Ian Rogerscab01012012-01-10 17:35:46 -08003679 << "Expected pending exception for failed resolution of: " << descriptor;
Ian Rogers62d6c772013-02-27 08:32:07 -08003680 // Convert a ClassNotFoundException to a NoClassDefFoundError.
3681 SirtRef<mirror::Throwable> cause(self, self->GetException(NULL));
3682 if (cause->InstanceOf(GetClassRoot(kJavaLangClassNotFoundException))) {
jeffhao8cd6dda2012-02-22 10:15:34 -08003683 Thread::Current()->ClearException();
3684 ThrowNoClassDefFoundError("Failed resolution of: %s", descriptor);
Ian Rogers62d6c772013-02-27 08:32:07 -08003685 self->GetException(NULL)->SetCause(cause.get());
jeffhao8cd6dda2012-02-22 10:15:34 -08003686 }
Ian Rogers0cfe1fb2011-08-26 03:29:44 -07003687 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003688 }
3689 return resolved;
3690}
3691
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003692mirror::AbstractMethod* ClassLinker::ResolveMethod(const DexFile& dex_file,
3693 uint32_t method_idx,
3694 mirror::DexCache* dex_cache,
3695 mirror::ClassLoader* class_loader,
3696 const mirror::AbstractMethod* referrer,
3697 InvokeType type) {
Brian Carlstrom7d776242012-03-06 23:05:49 -08003698 DCHECK(dex_cache != NULL);
Ian Rogers08f753d2012-08-24 14:35:25 -07003699 // Check for hit in the dex cache.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003700 mirror::AbstractMethod* resolved = dex_cache->GetResolvedMethod(method_idx);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003701 if (resolved != NULL) {
3702 return resolved;
3703 }
Ian Rogers08f753d2012-08-24 14:35:25 -07003704 // Fail, get the declaring class.
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003705 const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003706 mirror::Class* klass = ResolveType(dex_file, method_id.class_idx_, dex_cache, class_loader);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003707 if (klass == NULL) {
Elliott Hughescc5f9a92011-09-28 19:17:29 -07003708 DCHECK(Thread::Current()->IsExceptionPending());
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003709 return NULL;
3710 }
Ian Rogers08f753d2012-08-24 14:35:25 -07003711 // Scan using method_idx, this saves string compares but will only hit for matching dex
3712 // caches/files.
3713 switch (type) {
3714 case kDirect: // Fall-through.
3715 case kStatic:
3716 resolved = klass->FindDirectMethod(dex_cache, method_idx);
3717 break;
3718 case kInterface:
3719 resolved = klass->FindInterfaceMethod(dex_cache, method_idx);
Ian Rogers4c5b2652012-12-15 21:36:16 -08003720 DCHECK(resolved == NULL || resolved->GetDeclaringClass()->IsInterface());
Ian Rogers08f753d2012-08-24 14:35:25 -07003721 break;
3722 case kSuper: // Fall-through.
3723 case kVirtual:
3724 resolved = klass->FindVirtualMethod(dex_cache, method_idx);
3725 break;
3726 default:
3727 LOG(FATAL) << "Unreachable - invocation type: " << type;
Brian Carlstrom20cfffa2011-08-26 02:31:27 -07003728 }
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003729 if (resolved == NULL) {
Ian Rogers08f753d2012-08-24 14:35:25 -07003730 // Search by name, which works across dex files.
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003731 const char* name = dex_file.StringDataByIdx(method_id.name_idx_);
3732 std::string signature(dex_file.CreateMethodSignature(method_id.proto_idx_, NULL));
Ian Rogers08f753d2012-08-24 14:35:25 -07003733 switch (type) {
3734 case kDirect: // Fall-through.
3735 case kStatic:
jeffhao8cd6dda2012-02-22 10:15:34 -08003736 resolved = klass->FindDirectMethod(name, signature);
Ian Rogers08f753d2012-08-24 14:35:25 -07003737 break;
3738 case kInterface:
3739 resolved = klass->FindInterfaceMethod(name, signature);
Ian Rogers4c5b2652012-12-15 21:36:16 -08003740 DCHECK(resolved == NULL || resolved->GetDeclaringClass()->IsInterface());
Ian Rogers08f753d2012-08-24 14:35:25 -07003741 break;
3742 case kSuper: // Fall-through.
3743 case kVirtual:
3744 resolved = klass->FindVirtualMethod(name, signature);
3745 break;
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003746 }
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003747 }
Ian Rogers08f753d2012-08-24 14:35:25 -07003748 if (resolved != NULL) {
3749 // We found a method, check for incompatible class changes.
Ian Rogers87e552d2012-08-31 15:54:48 -07003750 if (resolved->CheckIncompatibleClassChange(type)) {
3751 resolved = NULL;
Ian Rogers08f753d2012-08-24 14:35:25 -07003752 }
3753 }
3754 if (resolved != NULL) {
3755 // Be a good citizen and update the dex cache to speed subsequent calls.
3756 dex_cache->SetResolvedMethod(method_idx, resolved);
3757 return resolved;
3758 } else {
jeffhaoc0228b82012-08-29 18:15:05 -07003759 // We failed to find the method which means either an access error, an incompatible class
3760 // change, or no such method. First try to find the method among direct and virtual methods.
Ian Rogers08f753d2012-08-24 14:35:25 -07003761 const char* name = dex_file.StringDataByIdx(method_id.name_idx_);
3762 std::string signature(dex_file.CreateMethodSignature(method_id.proto_idx_, NULL));
3763 switch (type) {
3764 case kDirect:
3765 case kStatic:
3766 resolved = klass->FindVirtualMethod(name, signature);
jeffhaoc0228b82012-08-29 18:15:05 -07003767 break;
3768 case kInterface:
3769 case kVirtual:
3770 case kSuper:
3771 resolved = klass->FindDirectMethod(name, signature);
3772 break;
3773 }
3774
3775 // If we found something, check that it can be accessed by the referrer.
3776 if (resolved != NULL && referrer != NULL) {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003777 mirror::Class* methods_class = resolved->GetDeclaringClass();
3778 mirror::Class* referring_class = referrer->GetDeclaringClass();
jeffhaoc0228b82012-08-29 18:15:05 -07003779 if (!referring_class->CanAccess(methods_class)) {
Ian Rogers87e552d2012-08-31 15:54:48 -07003780 ThrowIllegalAccessErrorClassForMethodDispatch(referring_class, methods_class,
3781 referrer, resolved, type);
jeffhaoc0228b82012-08-29 18:15:05 -07003782 return NULL;
3783 } else if (!referring_class->CanAccessMember(methods_class,
3784 resolved->GetAccessFlags())) {
Ian Rogers87e552d2012-08-31 15:54:48 -07003785 ThrowIllegalAccessErrorMethod(referring_class, resolved);
jeffhaoc0228b82012-08-29 18:15:05 -07003786 return NULL;
3787 }
3788 }
3789
3790 // Otherwise, throw an IncompatibleClassChangeError if we found something, and check interface
3791 // methods and throw if we find the method there. If we find nothing, throw a NoSuchMethodError.
3792 switch (type) {
3793 case kDirect:
3794 case kStatic:
Ian Rogers08f753d2012-08-24 14:35:25 -07003795 if (resolved != NULL) {
Ian Rogers2fc14272012-08-30 10:56:57 -07003796 ThrowIncompatibleClassChangeError(type, kVirtual, resolved, referrer);
Ian Rogers08f753d2012-08-24 14:35:25 -07003797 } else {
3798 resolved = klass->FindInterfaceMethod(name, signature);
3799 if (resolved != NULL) {
Ian Rogers2fc14272012-08-30 10:56:57 -07003800 ThrowIncompatibleClassChangeError(type, kInterface, resolved, referrer);
Ian Rogers08f753d2012-08-24 14:35:25 -07003801 } else {
Ian Rogers62d6c772013-02-27 08:32:07 -08003802 ThrowNoSuchMethodError(type, klass, name, signature);
Ian Rogers08f753d2012-08-24 14:35:25 -07003803 }
3804 }
3805 break;
3806 case kInterface:
Ian Rogers08f753d2012-08-24 14:35:25 -07003807 if (resolved != NULL) {
Ian Rogers2fc14272012-08-30 10:56:57 -07003808 ThrowIncompatibleClassChangeError(type, kDirect, resolved, referrer);
Ian Rogers08f753d2012-08-24 14:35:25 -07003809 } else {
3810 resolved = klass->FindVirtualMethod(name, signature);
3811 if (resolved != NULL) {
Ian Rogers2fc14272012-08-30 10:56:57 -07003812 ThrowIncompatibleClassChangeError(type, kVirtual, resolved, referrer);
Ian Rogers08f753d2012-08-24 14:35:25 -07003813 } else {
Ian Rogers62d6c772013-02-27 08:32:07 -08003814 ThrowNoSuchMethodError(type, klass, name, signature);
Ian Rogers08f753d2012-08-24 14:35:25 -07003815 }
3816 }
3817 break;
3818 case kSuper:
Ian Rogers62d6c772013-02-27 08:32:07 -08003819 ThrowNoSuchMethodError(type, klass, name, signature);
Ian Rogers08f753d2012-08-24 14:35:25 -07003820 break;
3821 case kVirtual:
Ian Rogers08f753d2012-08-24 14:35:25 -07003822 if (resolved != NULL) {
Ian Rogers2fc14272012-08-30 10:56:57 -07003823 ThrowIncompatibleClassChangeError(type, kDirect, resolved, referrer);
Ian Rogers08f753d2012-08-24 14:35:25 -07003824 } else {
3825 resolved = klass->FindInterfaceMethod(name, signature);
3826 if (resolved != NULL) {
Ian Rogers2fc14272012-08-30 10:56:57 -07003827 ThrowIncompatibleClassChangeError(type, kInterface, resolved, referrer);
Ian Rogers08f753d2012-08-24 14:35:25 -07003828 } else {
Ian Rogers62d6c772013-02-27 08:32:07 -08003829 ThrowNoSuchMethodError(type, klass, name, signature);
Ian Rogers08f753d2012-08-24 14:35:25 -07003830 }
3831 }
3832 break;
3833 }
3834 DCHECK(Thread::Current()->IsExceptionPending());
3835 return NULL;
3836 }
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003837}
3838
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003839mirror::Field* ClassLinker::ResolveField(const DexFile& dex_file,
3840 uint32_t field_idx,
3841 mirror::DexCache* dex_cache,
3842 mirror::ClassLoader* class_loader,
3843 bool is_static) {
Brian Carlstrom7d776242012-03-06 23:05:49 -08003844 DCHECK(dex_cache != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003845 mirror::Field* resolved = dex_cache->GetResolvedField(field_idx);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003846 if (resolved != NULL) {
3847 return resolved;
3848 }
3849 const DexFile::FieldId& field_id = dex_file.GetFieldId(field_idx);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003850 mirror::Class* klass = ResolveType(dex_file, field_id.class_idx_, dex_cache, class_loader);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003851 if (klass == NULL) {
Ian Rogers9f1ab122011-12-12 08:52:43 -08003852 DCHECK(Thread::Current()->IsExceptionPending());
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003853 return NULL;
3854 }
3855
Brian Carlstrom20cfffa2011-08-26 02:31:27 -07003856 if (is_static) {
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003857 resolved = klass->FindStaticField(dex_cache, field_idx);
Brian Carlstrom20cfffa2011-08-26 02:31:27 -07003858 } else {
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003859 resolved = klass->FindInstanceField(dex_cache, field_idx);
Brian Carlstrom20cfffa2011-08-26 02:31:27 -07003860 }
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003861
3862 if (resolved == NULL) {
3863 const char* name = dex_file.GetFieldName(field_id);
3864 const char* type = dex_file.GetFieldTypeDescriptor(field_id);
3865 if (is_static) {
3866 resolved = klass->FindStaticField(name, type);
3867 } else {
3868 resolved = klass->FindInstanceField(name, type);
3869 }
3870 if (resolved == NULL) {
3871 ThrowNoSuchFieldError(is_static ? "static " : "instance ", klass, type, name);
3872 return NULL;
3873 }
Ian Rogersb067ac22011-12-13 18:05:09 -08003874 }
Ian Rogers7b0c5b42012-02-16 15:29:07 -08003875 dex_cache->SetResolvedField(field_idx, resolved);
Ian Rogersb067ac22011-12-13 18:05:09 -08003876 return resolved;
3877}
3878
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003879mirror::Field* ClassLinker::ResolveFieldJLS(const DexFile& dex_file,
3880 uint32_t field_idx,
3881 mirror::DexCache* dex_cache,
3882 mirror::ClassLoader* class_loader) {
Brian Carlstrom7d776242012-03-06 23:05:49 -08003883 DCHECK(dex_cache != NULL);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003884 mirror::Field* resolved = dex_cache->GetResolvedField(field_idx);
Ian Rogersb067ac22011-12-13 18:05:09 -08003885 if (resolved != NULL) {
3886 return resolved;
3887 }
3888 const DexFile::FieldId& field_id = dex_file.GetFieldId(field_idx);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003889 mirror::Class* klass = ResolveType(dex_file, field_id.class_idx_, dex_cache, class_loader);
Ian Rogersb067ac22011-12-13 18:05:09 -08003890 if (klass == NULL) {
3891 DCHECK(Thread::Current()->IsExceptionPending());
3892 return NULL;
3893 }
3894
3895 const char* name = dex_file.GetFieldName(field_id);
3896 const char* type = dex_file.GetFieldTypeDescriptor(field_id);
3897 resolved = klass->FindField(name, type);
3898 if (resolved != NULL) {
3899 dex_cache->SetResolvedField(field_idx, resolved);
3900 } else {
3901 ThrowNoSuchFieldError("", klass, type, name);
Brian Carlstrom9ea1cb12011-08-24 23:18:18 -07003902 }
3903 return resolved;
Carl Shapiro5fafe2b2011-07-09 15:34:41 -07003904}
3905
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003906const char* ClassLinker::MethodShorty(uint32_t method_idx, mirror::AbstractMethod* referrer,
3907 uint32_t* length) {
3908 mirror::Class* declaring_class = referrer->GetDeclaringClass();
3909 mirror::DexCache* dex_cache = declaring_class->GetDexCache();
Ian Rogers4445a7e2012-10-05 17:19:13 -07003910 const DexFile& dex_file = *dex_cache->GetDexFile();
Ian Rogersad25ac52011-10-04 19:13:33 -07003911 const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx);
Ian Rogers19846512012-02-24 11:42:47 -08003912 return dex_file.GetMethodShorty(method_id, length);
Ian Rogersad25ac52011-10-04 19:13:33 -07003913}
3914
Elliott Hughes9d5ccec2011-09-19 13:19:50 -07003915void ClassLinker::DumpAllClasses(int flags) const {
3916 // TODO: at the time this was written, it wasn't safe to call PrettyField with the ClassLinker
3917 // lock held, because it might need to resolve a field's type, which would try to take the lock.
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003918 std::vector<mirror::Class*> all_classes;
Elliott Hughes9d5ccec2011-09-19 13:19:50 -07003919 {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07003920 ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -07003921 typedef Table::const_iterator It; // TODO: C++0x auto
3922 for (It it = classes_.begin(), end = classes_.end(); it != end; ++it) {
3923 all_classes.push_back(it->second);
3924 }
Ian Rogers5d76c432011-10-31 21:42:49 -07003925 for (It it = image_classes_.begin(), end = image_classes_.end(); it != end; ++it) {
3926 all_classes.push_back(it->second);
3927 }
Elliott Hughes9d5ccec2011-09-19 13:19:50 -07003928 }
3929
3930 for (size_t i = 0; i < all_classes.size(); ++i) {
3931 all_classes[i]->DumpClass(std::cerr, flags);
3932 }
3933}
3934
Elliott Hughescac6cc72011-11-03 20:31:21 -07003935void ClassLinker::DumpForSigQuit(std::ostream& os) const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07003936 ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Elliott Hughescac6cc72011-11-03 20:31:21 -07003937 os << "Loaded classes: " << image_classes_.size() << " image classes; "
3938 << classes_.size() << " allocated classes\n";
3939}
3940
Elliott Hughese27955c2011-08-26 15:21:24 -07003941size_t ClassLinker::NumLoadedClasses() const {
Ian Rogers1bf8d4d2013-05-30 00:18:49 -07003942 ReaderMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
Ian Rogers5d76c432011-10-31 21:42:49 -07003943 return classes_.size() + image_classes_.size();
Elliott Hughese27955c2011-08-26 15:21:24 -07003944}
3945
Brian Carlstrom47d237a2011-10-18 15:08:33 -07003946pid_t ClassLinker::GetClassesLockOwner() {
Ian Rogersb726dcb2012-09-05 08:57:23 -07003947 return Locks::classlinker_classes_lock_->GetExclusiveOwnerTid();
Brian Carlstrom47d237a2011-10-18 15:08:33 -07003948}
3949
3950pid_t ClassLinker::GetDexLockOwner() {
Ian Rogers00f7d0e2012-07-19 15:28:27 -07003951 return dex_lock_.GetExclusiveOwnerTid();
Brian Carlstrom24a3c2e2011-10-17 18:07:52 -07003952}
3953
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08003954void ClassLinker::SetClassRoot(ClassRoot class_root, mirror::Class* klass) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08003955 DCHECK(!init_done_);
3956
3957 DCHECK(klass != NULL);
3958 DCHECK(klass->GetClassLoader() == NULL);
3959
3960 DCHECK(class_roots_ != NULL);
3961 DCHECK(class_roots_->Get(class_root) == NULL);
3962 class_roots_->Set(class_root, klass);
3963}
3964
Carl Shapiro0e5d75d2011-07-06 18:28:37 -07003965} // namespace art