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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 Shapiro1fb86202011-06-27 17:43:13 -070016
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070017#include "runtime.h"
Carl Shapiro1fb86202011-06-27 17:43:13 -070018
Brian Carlstrombd86bcc2013-03-10 20:26:16 -070019// sys/mount.h has to come before linux/fs.h due to redefinition of MS_RDONLY, MS_BIND, etc
20#include <sys/mount.h>
21#include <linux/fs.h>
22
Brian Carlstromdbf05b72011-12-15 00:55:24 -080023#include <signal.h>
Elliott Hughesd06a6c72012-05-30 17:59:06 -070024#include <sys/syscall.h>
Brian Carlstromdbf05b72011-12-15 00:55:24 -080025
Elliott Hughesffe67362011-07-17 12:09:27 -070026#include <cstdio>
27#include <cstdlib>
Brian Carlstrom8a436592011-08-15 21:27:23 -070028#include <limits>
Carl Shapiro2ed144c2011-07-26 16:52:08 -070029#include <vector>
Elliott Hughesffe67362011-07-17 12:09:27 -070030
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080031#include "atomic.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070032#include "class_linker.h"
Elliott Hughes0f3c5532012-03-30 14:51:51 -070033#include "constants_arm.h"
jeffhao7fbee072012-08-24 17:56:54 -070034#include "constants_mips.h"
Elliott Hughes0f3c5532012-03-30 14:51:51 -070035#include "constants_x86.h"
Elliott Hughes3bb81562011-10-21 18:52:59 -070036#include "debugger.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080037#include "gc/card_table-inl.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070038#include "heap.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070039#include "image.h"
jeffhao725a9572012-11-13 18:20:12 -080040#include "instrumentation.h"
Elliott Hughescf4c6c42011-09-01 15:16:42 -070041#include "intern_table.h"
Elliott Hughesc5f7c912011-08-18 14:00:42 -070042#include "jni_internal.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080043#include "mirror/abstract_method-inl.h"
44#include "mirror/array.h"
45#include "mirror/class_loader.h"
46#include "mirror/field.h"
Ian Rogersc0fa3ad2013-02-05 00:11:55 -080047#include "mirror/field-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080048#include "mirror/throwable.h"
Elliott Hughes32d6e1e2011-10-11 14:47:44 -070049#include "monitor.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070050#include "oat_file.h"
Elliott Hughes726079d2011-10-07 18:43:44 -070051#include "ScopedLocalRef.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070052#include "scoped_thread_state_change.h"
Elliott Hughese27955c2011-08-26 15:21:24 -070053#include "signal_catcher.h"
Elliott Hughes457005c2012-04-16 13:54:25 -070054#include "signal_set.h"
Ian Rogers1f539342012-10-03 21:09:42 -070055#include "sirt_ref.h"
Mathieu Chartier7469ebf2012-09-24 16:28:36 -070056#include "gc/space.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070057#include "thread.h"
Elliott Hughes8daa0922011-09-11 13:46:25 -070058#include "thread_list.h"
jeffhaob5e81852012-03-12 11:15:45 -070059#include "trace.h"
Elliott Hughes3bb81562011-10-21 18:52:59 -070060#include "UniquePtr.h"
Ian Rogers776ac1f2012-04-13 23:36:36 -070061#include "verifier/method_verifier.h"
Elliott Hugheseac76672012-05-24 21:56:51 -070062#include "well_known_classes.h"
Carl Shapiro61e019d2011-07-14 16:53:09 -070063
Elliott Hugheseac76672012-05-24 21:56:51 -070064#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art.
Elliott Hughes90a33692011-08-30 13:27:07 -070065
Carl Shapiro1fb86202011-06-27 17:43:13 -070066namespace art {
67
Carl Shapiro2ed144c2011-07-26 16:52:08 -070068Runtime* Runtime::instance_ = NULL;
69
Elliott Hughesdcc24742011-09-07 14:02:44 -070070Runtime::Runtime()
Elliott Hughesd9c67be2012-02-02 19:54:06 -080071 : is_compiler_(false),
72 is_zygote_(false),
Mathieu Chartier069387a2012-06-18 12:01:01 -070073 is_concurrent_gc_enabled_(true),
Elliott Hughes6cf23882012-06-15 15:42:07 -070074 default_stack_size_(0),
Elliott Hughesb3bd5f02012-03-08 21:05:27 -080075 heap_(NULL),
Elliott Hughesc33a32b2011-10-11 18:18:07 -070076 monitor_list_(NULL),
Elliott Hughesdcc24742011-09-07 14:02:44 -070077 thread_list_(NULL),
78 intern_table_(NULL),
79 class_linker_(NULL),
80 signal_catcher_(NULL),
81 java_vm_(NULL),
Elliott Hughes225f5a12012-06-11 11:23:48 -070082 pre_allocated_OutOfMemoryError_(NULL),
Brian Carlstrom16192862011-09-12 17:50:06 -070083 jni_stub_array_(NULL),
Brian Carlstrome24fa612011-09-29 00:53:55 -070084 abstract_method_error_stub_array_(NULL),
Ian Rogers19846512012-02-24 11:42:47 -080085 resolution_method_(NULL),
Ian Rogers7c3757f2012-02-15 17:18:53 -080086 system_class_loader_(NULL),
Ian Rogers120f1c72012-09-28 17:17:10 -070087 threads_being_born_(0),
Ian Rogersc604d732012-10-14 16:09:54 -070088 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
Elliott Hughes6b355752012-01-13 16:49:08 -080089 shutting_down_(false),
Ian Rogers120f1c72012-09-28 17:17:10 -070090 shutting_down_started_(false),
Elliott Hughesdcc24742011-09-07 14:02:44 -070091 started_(false),
Mathieu Chartier7664f5c2012-06-08 18:15:32 -070092 finished_starting_(false),
Elliott Hughesdcc24742011-09-07 14:02:44 -070093 vfprintf_(NULL),
94 exit_(NULL),
Elliott Hughes9d5ccec2011-09-19 13:19:50 -070095 abort_(NULL),
jeffhao2692b572011-12-16 15:42:28 -080096 stats_enabled_(false),
Ian Rogers776ac1f2012-04-13 23:36:36 -070097 method_trace_(0),
98 method_trace_file_size_(0),
jeffhao725a9572012-11-13 18:20:12 -080099 instrumentation_(NULL),
Ian Rogers365c1022012-06-22 15:05:28 -0700100 use_compile_time_class_path_(false),
101 main_thread_group_(NULL),
Brian Carlstrom265091e2013-01-30 14:08:26 -0800102 system_thread_group_(NULL) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700103 for (int i = 0; i < Runtime::kLastTrampolineMethodType; i++) {
104 resolution_stub_array_[i] = NULL;
105 }
106 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Elliott Hughes225f5a12012-06-11 11:23:48 -0700107 callee_save_methods_[i] = NULL;
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700108 }
Elliott Hughesdcc24742011-09-07 14:02:44 -0700109}
110
Carl Shapiro61e019d2011-07-14 16:53:09 -0700111Runtime::~Runtime() {
Ian Rogers120f1c72012-09-28 17:17:10 -0700112 Thread* self = Thread::Current();
113 {
114 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
115 shutting_down_started_ = true;
116 while (threads_being_born_ > 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700117 shutdown_cond_->Wait(self);
Ian Rogers120f1c72012-09-28 17:17:10 -0700118 }
119 shutting_down_ = true;
120 }
Elliott Hughes6b355752012-01-13 16:49:08 -0800121
jeffhaob5e81852012-03-12 11:15:45 -0700122 if (IsMethodTracingActive()) {
123 Trace::Shutdown();
124 }
jeffhao725a9572012-11-13 18:20:12 -0800125 delete instrumentation_;
jeffhaob5e81852012-03-12 11:15:45 -0700126
Mathieu Chartiera6399032012-06-11 18:49:50 -0700127 // Make sure to let the GC complete if it is running.
Ian Rogers120f1c72012-09-28 17:17:10 -0700128 heap_->WaitForConcurrentGcToComplete(self);
Mathieu Chartier35883cc2012-11-13 14:08:12 -0800129 heap_->DeleteThreadPool();
Mathieu Chartiera6399032012-06-11 18:49:50 -0700130
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700131 // Make sure our internal threads are dead before we start tearing down things they're using.
Elliott Hughese52e49b2012-04-02 16:05:44 -0700132 Dbg::StopJdwp();
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700133 delete signal_catcher_;
134
Elliott Hughes038a8062011-09-18 14:12:41 -0700135 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
Elliott Hughes93e74e82011-09-13 11:07:03 -0700136 delete thread_list_;
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700137 delete monitor_list_;
Elliott Hughes93e74e82011-09-13 11:07:03 -0700138
Carl Shapiro61e019d2011-07-14 16:53:09 -0700139 delete class_linker_;
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800140 delete heap_;
Elliott Hughes0a1038b2012-06-14 16:24:17 -0700141 verifier::MethodVerifier::Shutdown();
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700142 delete intern_table_;
Elliott Hughesc5f7c912011-08-18 14:00:42 -0700143 delete java_vm_;
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700144 Thread::Shutdown();
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700145 QuasiAtomic::Shutdown();
146
Carl Shapiro4acf4642011-07-26 18:54:13 -0700147 // TODO: acquire a static mutex on Runtime to avoid racing.
Brian Carlstrom4a289ed2011-08-16 17:17:49 -0700148 CHECK(instance_ == NULL || instance_ == this);
Carl Shapiro4acf4642011-07-26 18:54:13 -0700149 instance_ = NULL;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700150}
151
Elliott Hughese0918552011-10-28 17:18:29 -0700152struct AbortState {
153 void Dump(std::ostream& os) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700154 if (gAborting) {
155 os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
156 return;
157 }
158 gAborting = true;
Elliott Hughese0918552011-10-28 17:18:29 -0700159 os << "Runtime aborting...\n";
Elliott Hughes6c7d2442012-02-01 18:40:47 -0800160 if (Runtime::Current() == NULL) {
161 os << "(Runtime does not yet exist!)\n";
162 return;
163 }
Elliott Hughese0918552011-10-28 17:18:29 -0700164 Thread* self = Thread::Current();
165 if (self == NULL) {
166 os << "(Aborting thread was not attached to runtime!)\n";
167 } else {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700168 // TODO: we're aborting and the ScopedObjectAccess may attempt to acquire the mutator_lock_
169 // which may block indefinitely if there's a misbehaving thread holding it exclusively.
170 // The code below should be made robust to this.
171 ScopedObjectAccess soa(self);
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700172 os << "Aborting thread:\n";
Elliott Hughes899e7892012-01-24 14:57:32 -0800173 self->Dump(os);
174 if (self->IsExceptionPending()) {
175 os << "Pending " << PrettyTypeOf(self->GetException()) << " on thread:\n"
176 << self->GetException()->Dump();
177 }
Elliott Hughese0918552011-10-28 17:18:29 -0700178 }
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700179 DumpAllThreads(os, self);
180 }
181
182 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS {
183 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self);
184 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self);
Ian Rogersfbd22912012-10-12 14:21:10 -0700185 if (!tll_already_held || !ml_already_held) {
186 os << "Dumping all threads without appropriate locks held:"
187 << (!tll_already_held ? " thread list lock" : "")
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700188 << (!ml_already_held ? " mutator lock" : "")
189 << "\n";
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700190 }
Ian Rogersfbd22912012-10-12 14:21:10 -0700191 os << "All threads:\n";
192 Runtime::Current()->GetThreadList()->DumpLocked(os);
Elliott Hughese0918552011-10-28 17:18:29 -0700193 }
194};
195
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700196void Runtime::Abort() {
Brian Carlstrom81b88712012-11-05 19:21:30 -0800197 gAborting = true; // set before taking any locks
198
Elliott Hughes131aef82012-01-27 11:53:35 -0800199 // Ensure that we don't have multiple threads trying to abort at once,
200 // which would result in significantly worse diagnostics.
Ian Rogers50b35e22012-10-04 10:09:15 -0700201 MutexLock mu(Thread::Current(), *Locks::abort_lock_);
Elliott Hughes131aef82012-01-27 11:53:35 -0800202
Elliott Hughesffe67362011-07-17 12:09:27 -0700203 // Get any pending output out of the way.
204 fflush(NULL);
205
206 // Many people have difficulty distinguish aborts from crashes,
207 // so be explicit.
Elliott Hughese0918552011-10-28 17:18:29 -0700208 AbortState state;
Elliott Hughes9ee5f9c2012-02-03 18:33:16 -0800209 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
Elliott Hughesffe67362011-07-17 12:09:27 -0700210
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700211 // Call the abort hook if we have one.
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700212 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700213 LOG(INTERNAL_FATAL) << "Calling abort hook...";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700214 Runtime::Current()->abort_();
215 // notreached
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700216 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700217 }
218
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700219#if defined(__BIONIC__)
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700220 // TODO: finish merging patches to fix abort(3) in bionic, then lose this!
221 // Bionic doesn't implement POSIX semantics for abort(3) in a multi-threaded
222 // process, so if we call abort(3) on a device, all threads in the process
Carl Shapiro69759ea2011-07-21 18:13:35 -0700223 // receive SIGABRT. debuggerd dumps the stack trace of the main
224 // thread, whether or not that was the thread that failed. By
225 // stuffing a value into a bogus address, we cause a segmentation
Elliott Hughesffe67362011-07-17 12:09:27 -0700226 // fault in the current thread, and get a useful log from debuggerd.
Elliott Hughes81ff3182012-03-23 20:35:56 -0700227 // We can also trivially tell the difference between a crash and
Elliott Hughesffe67362011-07-17 12:09:27 -0700228 // a deliberate abort by looking at the fault address.
229 *reinterpret_cast<char*>(0xdeadd00d) = 38;
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700230#elif defined(__APPLE__)
231 // TODO: check that this actually gives good stack traces on the Mac!
232 pthread_kill(pthread_self(), SIGABRT);
233#else
234 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3),
235 // which POSIX defines in terms of raise(3), which POSIX defines in terms
236 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through
237 // libpthread, which means the stacks we dump would be useless. Calling
238 // tgkill(2) directly avoids that.
239 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT);
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800240 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that?
241 exit(1);
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700242#endif
Elliott Hughesffe67362011-07-17 12:09:27 -0700243 // notreached
244}
245
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700246bool Runtime::PreZygoteFork() {
247 heap_->PreZygoteFork();
248 return true;
249}
250
Elliott Hughesbf86d042011-08-31 17:53:14 -0700251void Runtime::CallExitHook(jint status) {
252 if (exit_ != NULL) {
Elliott Hughes34e06962012-04-09 13:55:55 -0700253 ScopedThreadStateChange tsc(Thread::Current(), kNative);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700254 exit_(status);
255 LOG(WARNING) << "Exit hook returned instead of exiting!";
256 }
257}
258
Brian Carlstrom8a436592011-08-15 21:27:23 -0700259// Parse a string of the form /[0-9]+[kKmMgG]?/, which is used to specify
260// memory sizes. [kK] indicates kilobytes, [mM] megabytes, and
261// [gG] gigabytes.
262//
263// "s" should point just past the "-Xm?" part of the string.
Brian Carlstrom8a436592011-08-15 21:27:23 -0700264// "div" specifies a divisor, e.g. 1024 if the value must be a multiple
265// of 1024.
266//
267// The spec says the -Xmx and -Xms options must be multiples of 1024. It
268// doesn't say anything about -Xss.
269//
270// Returns 0 (a useless size) if "s" is malformed or specifies a low or
271// non-evenly-divisible value.
272//
Elliott Hughesc1f143d2011-12-01 17:31:10 -0800273size_t ParseMemoryOption(const char* s, size_t div) {
Brian Carlstrom8a436592011-08-15 21:27:23 -0700274 // strtoul accepts a leading [+-], which we don't want,
275 // so make sure our string starts with a decimal digit.
276 if (isdigit(*s)) {
Elliott Hughes398f64b2012-03-26 18:05:48 -0700277 char* s2;
278 size_t val = strtoul(s, &s2, 10);
Brian Carlstrom8a436592011-08-15 21:27:23 -0700279 if (s2 != s) {
280 // s2 should be pointing just after the number.
281 // If this is the end of the string, the user
282 // has specified a number of bytes. Otherwise,
283 // there should be exactly one more character
284 // that specifies a multiplier.
285 if (*s2 != '\0') {
Brian Carlstromf734cf52011-08-17 16:28:14 -0700286 // The remainder of the string is either a single multiplier
287 // character, or nothing to indicate that the value is in
288 // bytes.
289 char c = *s2++;
290 if (*s2 == '\0') {
291 size_t mul;
292 if (c == '\0') {
293 mul = 1;
294 } else if (c == 'k' || c == 'K') {
295 mul = KB;
296 } else if (c == 'm' || c == 'M') {
297 mul = MB;
298 } else if (c == 'g' || c == 'G') {
299 mul = GB;
Brian Carlstrom8a436592011-08-15 21:27:23 -0700300 } else {
Brian Carlstromf734cf52011-08-17 16:28:14 -0700301 // Unknown multiplier character.
Brian Carlstrom8a436592011-08-15 21:27:23 -0700302 return 0;
303 }
Brian Carlstromf734cf52011-08-17 16:28:14 -0700304
305 if (val <= std::numeric_limits<size_t>::max() / mul) {
306 val *= mul;
307 } else {
308 // Clamp to a multiple of 1024.
309 val = std::numeric_limits<size_t>::max() & ~(1024-1);
310 }
311 } else {
312 // There's more than one character after the numeric part.
313 return 0;
314 }
Brian Carlstrom8a436592011-08-15 21:27:23 -0700315 }
316 // The man page says that a -Xm value must be a multiple of 1024.
317 if (val % div == 0) {
318 return val;
319 }
Carl Shapirofc322c72011-07-27 00:20:01 -0700320 }
321 }
Brian Carlstrom8a436592011-08-15 21:27:23 -0700322 return 0;
Carl Shapirofc322c72011-07-27 00:20:01 -0700323}
324
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800325size_t ParseIntegerOrDie(const std::string& s) {
326 std::string::size_type colon = s.find(':');
327 if (colon == std::string::npos) {
Elliott Hughesbb1e8f02011-10-18 14:14:25 -0700328 LOG(FATAL) << "Missing integer: " << s;
329 }
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800330 const char* begin = &s[colon + 1];
Elliott Hughesbb1e8f02011-10-18 14:14:25 -0700331 char* end;
332 size_t result = strtoul(begin, &end, 10);
333 if (begin == end || *end != '\0') {
334 LOG(FATAL) << "Failed to parse integer in: " << s;
335 }
336 return result;
337}
338
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700339Runtime::ParsedOptions* Runtime::ParsedOptions::Create(const Options& options, bool ignore_unrecognized) {
Elliott Hughes90a33692011-08-30 13:27:07 -0700340 UniquePtr<ParsedOptions> parsed(new ParsedOptions());
Brian Carlstroma004aa92012-02-08 18:05:09 -0800341 const char* boot_class_path_string = getenv("BOOTCLASSPATH");
342 if (boot_class_path_string != NULL) {
343 parsed->boot_class_path_string_ = boot_class_path_string;
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700344 }
Brian Carlstroma004aa92012-02-08 18:05:09 -0800345 const char* class_path_string = getenv("CLASSPATH");
346 if (class_path_string != NULL) {
347 parsed->class_path_string_ = class_path_string;
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700348 }
Elliott Hughes67d92002012-03-26 15:08:51 -0700349 // -Xcheck:jni is off by default for regular builds but on by default in debug builds.
350 parsed->check_jni_ = kIsDebugBuild;
Elliott Hughes85d15452011-09-16 17:33:01 -0700351
Mathieu Chartier0051be62012-10-12 17:47:11 -0700352 parsed->heap_initial_size_ = Heap::kDefaultInitialSize;
353 parsed->heap_maximum_size_ = Heap::kDefaultMaximumSize;
354 parsed->heap_min_free_ = Heap::kDefaultMinFree;
355 parsed->heap_max_free_ = Heap::kDefaultMaxFree;
356 parsed->heap_target_utilization_ = Heap::kDefaultTargetUtilization;
Elliott Hughes6cf23882012-06-15 15:42:07 -0700357 parsed->heap_growth_limit_ = 0; // 0 means no growth limit.
358 parsed->stack_size_ = 0; // 0 means default.
Brian Carlstromf734cf52011-08-17 16:28:14 -0700359
Elliott Hughesd9c67be2012-02-02 19:54:06 -0800360 parsed->is_compiler_ = false;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700361 parsed->is_zygote_ = false;
Ian Rogers50ffee22012-11-20 11:47:44 -0800362 parsed->interpreter_only_ = false;
Mathieu Chartier069387a2012-06-18 12:01:01 -0700363 parsed->is_concurrent_gc_enabled_ = true;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700364
Elliott Hughesbb1e8f02011-10-18 14:14:25 -0700365 parsed->jni_globals_max_ = 0;
Elliott Hughesfc861622011-10-17 17:57:47 -0700366 parsed->lock_profiling_threshold_ = 0;
367 parsed->hook_is_sensitive_thread_ = NULL;
368
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700369 parsed->hook_vfprintf_ = vfprintf;
370 parsed->hook_exit_ = exit;
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700371 parsed->hook_abort_ = NULL; // We don't call abort(3) by default; see Runtime::Abort.
Brian Carlstrom8a436592011-08-15 21:27:23 -0700372
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800373// gLogVerbosity.class_linker = true; // TODO: don't check this in!
374// gLogVerbosity.compiler = true; // TODO: don't check this in!
375// gLogVerbosity.heap = true; // TODO: don't check this in!
376// gLogVerbosity.gc = true; // TODO: don't check this in!
377// gLogVerbosity.jdwp = true; // TODO: don't check this in!
378// gLogVerbosity.jni = true; // TODO: don't check this in!
379// gLogVerbosity.monitor = true; // TODO: don't check this in!
380// gLogVerbosity.startup = true; // TODO: don't check this in!
381// gLogVerbosity.third_party_jni = true; // TODO: don't check this in!
382// gLogVerbosity.threads = true; // TODO: don't check this in!
383
jeffhaob5e81852012-03-12 11:15:45 -0700384 parsed->method_trace_ = false;
385 parsed->method_trace_file_ = "/data/method-trace-file.bin";
386 parsed->method_trace_file_size_ = 10 * MB;
387
Brian Carlstrom8a436592011-08-15 21:27:23 -0700388 for (size_t i = 0; i < options.size(); ++i) {
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800389 const std::string option(options[i].first);
Brian Carlstrom0796af02011-10-12 14:31:45 -0700390 if (true && options[0].first == "-Xzygote") {
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700391 LOG(INFO) << "option[" << i << "]=" << option;
392 }
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800393 if (StartsWith(option, "-Xbootclasspath:")) {
Brian Carlstroma004aa92012-02-08 18:05:09 -0800394 parsed->boot_class_path_string_ = option.substr(strlen("-Xbootclasspath:")).data();
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700395 } else if (option == "-classpath" || option == "-cp") {
396 // TODO: support -Djava.class.path
397 i++;
398 if (i == options.size()) {
399 // TODO: usage
400 LOG(FATAL) << "Missing required class path value for " << option;
401 return NULL;
402 }
Brian Carlstroma004aa92012-02-08 18:05:09 -0800403 const StringPiece& value = options[i].first;
404 parsed->class_path_string_ = value.data();
405 } else if (option == "bootclasspath") {
406 parsed->boot_class_path_
407 = reinterpret_cast<const std::vector<const DexFile*>*>(options[i].second);
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800408 } else if (StartsWith(option, "-Ximage:")) {
Brian Carlstroma004aa92012-02-08 18:05:09 -0800409 parsed->image_ = option.substr(strlen("-Ximage:")).data();
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800410 } else if (StartsWith(option, "-Xcheck:jni")) {
Elliott Hughes515a5bc2011-08-17 11:08:34 -0700411 parsed->check_jni_ = true;
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800412 } else if (StartsWith(option, "-Xrunjdwp:") || StartsWith(option, "-agentlib:jdwp=")) {
413 std::string tail(option.substr(option[1] == 'X' ? 10 : 15));
Elliott Hughes3bb81562011-10-21 18:52:59 -0700414 if (tail == "help" || !Dbg::ParseJdwpOptions(tail)) {
415 LOG(FATAL) << "Example: -Xrunjdwp:transport=dt_socket,address=8000,server=y\n"
416 << "Example: -Xrunjdwp:transport=dt_socket,address=localhost:6500,server=n";
417 return NULL;
418 }
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800419 } else if (StartsWith(option, "-Xms")) {
420 size_t size = ParseMemoryOption(option.substr(strlen("-Xms")).c_str(), 1024);
Brian Carlstromf734cf52011-08-17 16:28:14 -0700421 if (size == 0) {
422 if (ignore_unrecognized) {
423 continue;
424 }
Brian Carlstrom4a289ed2011-08-16 17:17:49 -0700425 // TODO: usage
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700426 LOG(FATAL) << "Failed to parse " << option;
Brian Carlstromf734cf52011-08-17 16:28:14 -0700427 return NULL;
428 }
429 parsed->heap_initial_size_ = size;
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800430 } else if (StartsWith(option, "-Xmx")) {
431 size_t size = ParseMemoryOption(option.substr(strlen("-Xmx")).c_str(), 1024);
Brian Carlstromf734cf52011-08-17 16:28:14 -0700432 if (size == 0) {
433 if (ignore_unrecognized) {
434 continue;
435 }
Brian Carlstrom4a289ed2011-08-16 17:17:49 -0700436 // TODO: usage
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700437 LOG(FATAL) << "Failed to parse " << option;
Brian Carlstromf734cf52011-08-17 16:28:14 -0700438 return NULL;
439 }
440 parsed->heap_maximum_size_ = size;
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800441 } else if (StartsWith(option, "-XX:HeapGrowthLimit=")) {
442 size_t size = ParseMemoryOption(option.substr(strlen("-XX:HeapGrowthLimit=")).c_str(), 1024);
jeffhaoc1160702011-10-27 15:48:45 -0700443 if (size == 0) {
444 if (ignore_unrecognized) {
445 continue;
446 }
447 // TODO: usage
448 LOG(FATAL) << "Failed to parse " << option;
449 return NULL;
450 }
451 parsed->heap_growth_limit_ = size;
Mathieu Chartier0051be62012-10-12 17:47:11 -0700452 } else if (StartsWith(option, "-XX:HeapMinFree=")) {
453 size_t size = ParseMemoryOption(option.substr(strlen("-XX:HeapMinFree=")).c_str(), 1024);
454 if (size == 0) {
455 if (ignore_unrecognized) {
456 continue;
457 }
458 // TODO: usage
459 LOG(FATAL) << "Failed to parse " << option;
460 return NULL;
461 }
462 parsed->heap_min_free_ = size;
463 } else if (StartsWith(option, "-XX:HeapMaxFree=")) {
464 size_t size = ParseMemoryOption(option.substr(strlen("-XX:HeapMaxFree=")).c_str(), 1024);
465 if (size == 0) {
466 if (ignore_unrecognized) {
467 continue;
468 }
469 // TODO: usage
470 LOG(FATAL) << "Failed to parse " << option;
471 return NULL;
472 }
473 parsed->heap_max_free_ = size;
474 } else if (StartsWith(option, "-XX:HeapTargetUtilization=")) {
475 std::istringstream iss(option.substr(strlen("-XX:HeapTargetUtilization=")));
476 double value;
477 iss >> value;
478 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range.
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700479 const bool sane_val = iss.eof() && (value >= 0.1) && (value <= 0.9);
Mathieu Chartier0051be62012-10-12 17:47:11 -0700480 if (!sane_val) {
481 if (ignore_unrecognized) {
482 continue;
483 }
484 LOG(FATAL) << "Invalid option '" << option << "'";
485 return NULL;
486 }
487 parsed->heap_target_utilization_ = value;
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800488 } else if (StartsWith(option, "-Xss")) {
489 size_t size = ParseMemoryOption(option.substr(strlen("-Xss")).c_str(), 1);
Brian Carlstromf734cf52011-08-17 16:28:14 -0700490 if (size == 0) {
491 if (ignore_unrecognized) {
492 continue;
493 }
Brian Carlstrom4a289ed2011-08-16 17:17:49 -0700494 // TODO: usage
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700495 LOG(FATAL) << "Failed to parse " << option;
Brian Carlstromf734cf52011-08-17 16:28:14 -0700496 return NULL;
497 }
498 parsed->stack_size_ = size;
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800499 } else if (StartsWith(option, "-D")) {
500 parsed->properties_.push_back(option.substr(strlen("-D")));
501 } else if (StartsWith(option, "-Xjnitrace:")) {
502 parsed->jni_trace_ = option.substr(strlen("-Xjnitrace:"));
Brian Carlstrom5de8fe52011-10-16 14:10:09 -0700503 } else if (option == "compiler") {
Elliott Hughesd9c67be2012-02-02 19:54:06 -0800504 parsed->is_compiler_ = true;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700505 } else if (option == "-Xzygote") {
506 parsed->is_zygote_ = true;
Ian Rogers50ffee22012-11-20 11:47:44 -0800507 } else if (option == "-Xint") {
508 parsed->interpreter_only_ = true;
Mathieu Chartier069387a2012-06-18 12:01:01 -0700509 } else if (StartsWith(option, "-Xgc:")) {
510 std::vector<std::string> gc_options;
511 Split(option.substr(strlen("-Xgc:")), ',', gc_options);
512 for (size_t i = 0; i < gc_options.size(); ++i) {
513 if (gc_options[i] == "noconcurrent") {
514 parsed->is_concurrent_gc_enabled_ = false;
515 } else if (gc_options[i] == "concurrent") {
516 parsed->is_concurrent_gc_enabled_ = true;
517 } else {
518 LOG(WARNING) << "Ignoring unknown -Xgc option: " << gc_options[i];
519 }
520 }
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800521 } else if (StartsWith(option, "-verbose:")) {
Elliott Hughes0af55432011-08-17 18:37:28 -0700522 std::vector<std::string> verbose_options;
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800523 Split(option.substr(strlen("-verbose:")), ',', verbose_options);
Elliott Hughes0af55432011-08-17 18:37:28 -0700524 for (size_t i = 0; i < verbose_options.size(); ++i) {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800525 if (verbose_options[i] == "class") {
526 gLogVerbosity.class_linker = true;
527 } else if (verbose_options[i] == "compiler") {
528 gLogVerbosity.compiler = true;
529 } else if (verbose_options[i] == "heap") {
530 gLogVerbosity.heap = true;
531 } else if (verbose_options[i] == "gc") {
532 gLogVerbosity.gc = true;
533 } else if (verbose_options[i] == "jdwp") {
534 gLogVerbosity.jdwp = true;
535 } else if (verbose_options[i] == "jni") {
536 gLogVerbosity.jni = true;
537 } else if (verbose_options[i] == "monitor") {
538 gLogVerbosity.monitor = true;
539 } else if (verbose_options[i] == "startup") {
540 gLogVerbosity.startup = true;
541 } else if (verbose_options[i] == "third-party-jni") {
542 gLogVerbosity.third_party_jni = true;
543 } else if (verbose_options[i] == "threads") {
544 gLogVerbosity.threads = true;
545 } else {
546 LOG(WARNING) << "Ignoring unknown -verbose option: " << verbose_options[i];
547 }
Elliott Hughes0af55432011-08-17 18:37:28 -0700548 }
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800549 } else if (StartsWith(option, "-Xjnigreflimit:")) {
Elliott Hughesbb1e8f02011-10-18 14:14:25 -0700550 parsed->jni_globals_max_ = ParseIntegerOrDie(option);
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800551 } else if (StartsWith(option, "-Xlockprofthreshold:")) {
Elliott Hughesbb1e8f02011-10-18 14:14:25 -0700552 parsed->lock_profiling_threshold_ = ParseIntegerOrDie(option);
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800553 } else if (StartsWith(option, "-Xstacktracefile:")) {
Elliott Hughes206c20d2012-06-28 11:05:37 -0700554 parsed->stack_trace_file_ = option.substr(strlen("-Xstacktracefile:"));
Elliott Hughesfc861622011-10-17 17:57:47 -0700555 } else if (option == "sensitiveThread") {
Ian Rogers1b09b092012-08-20 15:35:52 -0700556 parsed->hook_is_sensitive_thread_ = reinterpret_cast<bool (*)()>(const_cast<void*>(options[i].second));
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700557 } else if (option == "vfprintf") {
Ian Rogers1b09b092012-08-20 15:35:52 -0700558 parsed->hook_vfprintf_ =
559 reinterpret_cast<int (*)(FILE *, const char*, va_list)>(const_cast<void*>(options[i].second));
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700560 } else if (option == "exit") {
Ian Rogers1b09b092012-08-20 15:35:52 -0700561 parsed->hook_exit_ = reinterpret_cast<void(*)(jint)>(const_cast<void*>(options[i].second));
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700562 } else if (option == "abort") {
Ian Rogers1b09b092012-08-20 15:35:52 -0700563 parsed->hook_abort_ = reinterpret_cast<void(*)()>(const_cast<void*>(options[i].second));
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700564 } else if (option == "host-prefix") {
565 parsed->host_prefix_ = reinterpret_cast<const char*>(options[i].second);
Elliott Hughesb3e66df2012-01-12 14:49:18 -0800566 } else if (option == "-Xgenregmap" || option == "-Xgc:precise") {
567 // We silently ignore these for backwards compatibility.
jeffhaob5e81852012-03-12 11:15:45 -0700568 } else if (option == "-Xmethod-trace") {
569 parsed->method_trace_ = true;
570 } else if (StartsWith(option, "-Xmethod-trace-file:")) {
571 parsed->method_trace_file_ = option.substr(strlen("-Xmethod-trace-file:"));
572 } else if (StartsWith(option, "-Xmethod-trace-file-size:")) {
573 parsed->method_trace_file_size_ = ParseIntegerOrDie(option);
Elliott Hughese119a362012-05-22 17:37:06 -0700574 } else if (option == "-Xprofile:threadcpuclock") {
575 Trace::SetDefaultClockSource(kProfilerClockSourceThreadCpu);
576 } else if (option == "-Xprofile:wallclock") {
577 Trace::SetDefaultClockSource(kProfilerClockSourceWall);
578 } else if (option == "-Xprofile:dualclock") {
579 Trace::SetDefaultClockSource(kProfilerClockSourceDual);
Brian Carlstrom8a436592011-08-15 21:27:23 -0700580 } else {
581 if (!ignore_unrecognized) {
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700582 // TODO: print usage via vfprintf
Brian Carlstrom27ec9612011-09-19 20:20:38 -0700583 LOG(ERROR) << "Unrecognized option " << option;
584 // TODO: this should exit, but for now tolerate unknown options
585 //return NULL;
Brian Carlstrom8a436592011-08-15 21:27:23 -0700586 }
587 }
588 }
589
Brian Carlstrom223f20f2012-02-04 23:06:55 -0800590 if (!parsed->is_compiler_ && parsed->image_.empty()) {
591 parsed->image_ += GetAndroidRoot();
592 parsed->image_ += "/framework/boot.art";
Brian Carlstrom5de8fe52011-10-16 14:10:09 -0700593 }
jeffhaoc1160702011-10-27 15:48:45 -0700594 if (parsed->heap_growth_limit_ == 0) {
595 parsed->heap_growth_limit_ = parsed->heap_maximum_size_;
596 }
Brian Carlstrom5de8fe52011-10-16 14:10:09 -0700597
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700598 return parsed.release();
Brian Carlstrom8a436592011-08-15 21:27:23 -0700599}
600
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700601bool Runtime::Create(const Options& options, bool ignore_unrecognized) {
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700602 // TODO: acquire a static mutex on Runtime to avoid racing.
603 if (Runtime::instance_ != NULL) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700604 return false;
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700605 }
Ian Rogersb726dcb2012-09-05 08:57:23 -0700606 Locks::Init();
Elliott Hughesdcc24742011-09-07 14:02:44 -0700607 instance_ = new Runtime;
608 if (!instance_->Init(options, ignore_unrecognized)) {
609 delete instance_;
610 instance_ = NULL;
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700611 return false;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700612 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700613 return true;
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700614}
Elliott Hughes0af55432011-08-17 18:37:28 -0700615
Ian Rogers365c1022012-06-22 15:05:28 -0700616static void CreateSystemClassLoader() {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800617 if (Runtime::Current()->UseCompileTimeClassPath()) {
Brian Carlstromaded5f72011-10-07 17:15:04 -0700618 return;
619 }
620
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700621 ScopedObjectAccess soa(Thread::Current());
Brian Carlstromaded5f72011-10-07 17:15:04 -0700622
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800623 mirror::Class* class_loader_class =
624 soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader);
Ian Rogers365c1022012-06-22 15:05:28 -0700625 CHECK(Runtime::Current()->GetClassLinker()->EnsureInitialized(class_loader_class, true, true));
Brian Carlstromaded5f72011-10-07 17:15:04 -0700626
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800627 mirror::AbstractMethod* getSystemClassLoader =
628 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
Brian Carlstromdf143242011-10-10 18:05:34 -0700629 CHECK(getSystemClassLoader != NULL);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700630
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800631 mirror::ClassLoader* class_loader =
632 down_cast<mirror::ClassLoader*>(InvokeWithJValues(soa, NULL, getSystemClassLoader, NULL).GetL());
Ian Rogers365c1022012-06-22 15:05:28 -0700633 CHECK(class_loader != NULL);
Jesse Wilson1b2b2f22011-11-22 11:47:44 -0500634
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700635 soa.Self()->SetClassLoaderOverride(class_loader);
Ian Rogers365c1022012-06-22 15:05:28 -0700636
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800637 mirror::Class* thread_class = soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread);
Ian Rogers365c1022012-06-22 15:05:28 -0700638 CHECK(Runtime::Current()->GetClassLinker()->EnsureInitialized(thread_class, true, true));
639
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800640 mirror::Field* contextClassLoader = thread_class->FindDeclaredInstanceField("contextClassLoader",
641 "Ljava/lang/ClassLoader;");
Jesse Wilson1b2b2f22011-11-22 11:47:44 -0500642 CHECK(contextClassLoader != NULL);
Ian Rogers365c1022012-06-22 15:05:28 -0700643
Ian Rogerscfaa4552012-11-26 21:00:08 -0800644 contextClassLoader->SetObject(soa.Self()->GetPeer(), class_loader);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700645}
646
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700647bool Runtime::Start() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800648 VLOG(startup) << "Runtime::Start entering";
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700649
650 CHECK(host_prefix_.empty()) << host_prefix_;
651
Elliott Hughes225f5a12012-06-11 11:23:48 -0700652 // Pre-allocate an OutOfMemoryError for the double-OOME case.
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700653 Thread* self = Thread::Current();
Elliott Hughes225f5a12012-06-11 11:23:48 -0700654 self->ThrowNewException("Ljava/lang/OutOfMemoryError;",
655 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; no stack available");
656 pre_allocated_OutOfMemoryError_ = self->GetException();
657 self->ClearException();
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700658
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700659 // Restore main thread state to kNative as expected by native code.
660 self->TransitionFromRunnableToSuspended(kNative);
661
Brian Carlstrom5d40f182011-09-26 22:29:18 -0700662 started_ = true;
663
Brian Carlstromae826982011-11-09 01:33:42 -0800664 // InitNativeMethods needs to be after started_ so that the classes
665 // it touches will have methods linked to the oat file if necessary.
666 InitNativeMethods();
667
Ian Rogers365c1022012-06-22 15:05:28 -0700668 // Initialize well known thread group values that may be accessed threads while attaching.
669 InitThreadGroups(self);
670
Jesse Wilson9a6bae82011-11-14 14:57:30 -0500671 Thread::FinishStartup();
672
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700673 if (is_zygote_) {
674 if (!InitZygote()) {
675 return false;
676 }
677 } else {
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700678 DidForkFromZygote();
679 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700680
Elliott Hughes85d15452011-09-16 17:33:01 -0700681 StartDaemonThreads();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700682
Brian Carlstromaded5f72011-10-07 17:15:04 -0700683 CreateSystemClassLoader();
684
Elliott Hughes225f5a12012-06-11 11:23:48 -0700685 self->GetJniEnv()->locals.AssertEmpty();
Elliott Hughes726079d2011-10-07 18:43:44 -0700686
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800687 VLOG(startup) << "Runtime::Start exiting";
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700688
689 finished_starting_ = true;
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700690
691 return true;
Elliott Hughes85d15452011-09-16 17:33:01 -0700692}
693
Ian Rogers120f1c72012-09-28 17:17:10 -0700694void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) {
695 DCHECK_GT(threads_being_born_, 0U);
696 threads_being_born_--;
697 if (shutting_down_started_ && threads_being_born_ == 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700698 shutdown_cond_->Broadcast(Thread::Current());
Ian Rogers120f1c72012-09-28 17:17:10 -0700699 }
700}
701
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700702// Do zygote-mode-only initialization.
703bool Runtime::InitZygote() {
704 // zygote goes into its own process group
705 setpgid(0,0);
706
707 // See storage config details at http://source.android.com/tech/storage/
708 // Create private mount namespace shared by all children
709 if (unshare(CLONE_NEWNS) == -1) {
710 PLOG(WARNING) << "Failed to unshare()";
711 return false;
712 }
713
714 // Mark rootfs as being a slave so that changes from default
715 // namespace only flow into our children.
716 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) {
717 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE";
718 return false;
719 }
720
721 // Create a staging tmpfs that is shared by our children; they will
722 // bind mount storage into their respective private namespaces, which
723 // are isolated from each other.
724 const char* target_base = getenv("EMULATED_STORAGE_TARGET");
725 if (target_base != NULL) {
726 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV,
727 "uid=0,gid=1028,mode=0050") == -1) {
728 LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
729 return false;
730 }
731 }
732
733 return true;
734}
735
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700736void Runtime::DidForkFromZygote() {
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700737 is_zygote_ = false;
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700738
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700739 // Create the thread pool.
740 heap_->CreateThreadPool();
741
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700742 StartSignalCatcher();
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700743
744 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y",
745 // this will pause the runtime, so we probably want this to come last.
746 Dbg::StartJdwp();
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700747}
748
749void Runtime::StartSignalCatcher() {
750 if (!is_zygote_) {
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700751 signal_catcher_ = new SignalCatcher(stack_trace_file_);
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700752 }
753}
754
Elliott Hughes85d15452011-09-16 17:33:01 -0700755void Runtime::StartDaemonThreads() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800756 VLOG(startup) << "Runtime::StartDaemonThreads entering";
Elliott Hughes85d15452011-09-16 17:33:01 -0700757
Elliott Hughes719b3232011-09-25 17:42:19 -0700758 Thread* self = Thread::Current();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700759
760 // Must be in the kNative state for calling native methods.
Ian Rogers50b35e22012-10-04 10:09:15 -0700761 CHECK_EQ(self->GetState(), kNative);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700762
Elliott Hughes719b3232011-09-25 17:42:19 -0700763 JNIEnv* env = self->GetJniEnv();
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700764 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons,
765 WellKnownClasses::java_lang_Daemons_start);
766 if (env->ExceptionCheck()) {
767 env->ExceptionDescribe();
768 LOG(FATAL) << "Error starting java.lang.Daemons";
769 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700770
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800771 VLOG(startup) << "Runtime::StartDaemonThreads exiting";
Carl Shapiro61e019d2011-07-14 16:53:09 -0700772}
773
Elliott Hughes0af55432011-08-17 18:37:28 -0700774bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) {
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700775 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700776
Elliott Hughes90a33692011-08-30 13:27:07 -0700777 UniquePtr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
778 if (options.get() == NULL) {
Brian Carlstrome24fa612011-09-29 00:53:55 -0700779 LOG(ERROR) << "Failed to parse options";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700780 return false;
781 }
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800782 VLOG(startup) << "Runtime::Init -verbose:startup enabled";
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700783
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700784 QuasiAtomic::Startup();
785
Elliott Hughesbb1e8f02011-10-18 14:14:25 -0700786 SetJniGlobalsMax(options->jni_globals_max_);
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800787 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
Elliott Hughes32d6e1e2011-10-11 14:47:44 -0700788
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700789 host_prefix_ = options->host_prefix_;
Brian Carlstroma004aa92012-02-08 18:05:09 -0800790 boot_class_path_string_ = options->boot_class_path_string_;
791 class_path_string_ = options->class_path_string_;
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700792 properties_ = options->properties_;
793
Elliott Hughesd9c67be2012-02-02 19:54:06 -0800794 is_compiler_ = options->is_compiler_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700795 is_zygote_ = options->is_zygote_;
Ian Rogers50ffee22012-11-20 11:47:44 -0800796 interpreter_only_ = options->interpreter_only_;
Mathieu Chartier069387a2012-06-18 12:01:01 -0700797 is_concurrent_gc_enabled_ = options->is_concurrent_gc_enabled_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700798
Elliott Hughes0af55432011-08-17 18:37:28 -0700799 vfprintf_ = options->hook_vfprintf_;
800 exit_ = options->hook_exit_;
801 abort_ = options->hook_abort_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700802
Elliott Hughesbe759c62011-09-08 19:38:21 -0700803 default_stack_size_ = options->stack_size_;
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700804 stack_trace_file_ = options->stack_trace_file_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700805
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700806 monitor_list_ = new MonitorList;
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800807 thread_list_ = new ThreadList;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700808 intern_table_ = new InternTable;
809
Elliott Hughes0a1038b2012-06-14 16:24:17 -0700810 verifier::MethodVerifier::Init();
Logan Chiendd361c92012-04-10 23:40:37 +0800811
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800812 heap_ = new Heap(options->heap_initial_size_,
813 options->heap_growth_limit_,
Mathieu Chartier0051be62012-10-12 17:47:11 -0700814 options->heap_min_free_,
815 options->heap_max_free_,
816 options->heap_target_utilization_,
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800817 options->heap_maximum_size_,
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700818 options->image_,
819 options->is_concurrent_gc_enabled_);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700820
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700821 BlockSignals();
Elliott Hughes457005c2012-04-16 13:54:25 -0700822 InitPlatformSignalHandlers();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700823
Elliott Hughesa0957642011-09-02 14:27:33 -0700824 java_vm_ = new JavaVMExt(this, options.get());
Elliott Hughes515a5bc2011-08-17 11:08:34 -0700825
Elliott Hughesbe759c62011-09-08 19:38:21 -0700826 Thread::Startup();
Elliott Hughesd92bec42011-09-02 17:04:36 -0700827
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800828 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating
829 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main
830 // thread, we do not get a java peer.
831 Thread* self = Thread::Attach("main", false, NULL, false);
832 CHECK_EQ(self->thin_lock_id_, ThreadList::kMainId);
Ian Rogers120f1c72012-09-28 17:17:10 -0700833 CHECK(self != NULL);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700834
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700835 // Set us to runnable so tools using a runtime can allocate and GC by default
Ian Rogers120f1c72012-09-28 17:17:10 -0700836 self->TransitionFromSuspendedToRunnable();
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700837
Ian Rogers141d6222012-04-05 12:23:06 -0700838 // Now we're attached, we can take the heap lock and validate the heap.
839 GetHeap()->EnableObjectValidation();
840
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800841 CHECK_GE(GetHeap()->GetSpaces().size(), 1U);
842 if (GetHeap()->GetSpaces()[0]->IsImageSpace()) {
Brian Carlstroma004aa92012-02-08 18:05:09 -0800843 class_linker_ = ClassLinker::CreateFromImage(intern_table_);
844 } else {
845 CHECK(options->boot_class_path_ != NULL);
846 CHECK_NE(options->boot_class_path_->size(), 0U);
847 class_linker_ = ClassLinker::CreateFromCompiler(*options->boot_class_path_, intern_table_);
848 }
849 CHECK(class_linker_ != NULL);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700850
jeffhaob5e81852012-03-12 11:15:45 -0700851 method_trace_ = options->method_trace_;
852 method_trace_file_ = options->method_trace_file_;
853 method_trace_file_size_ = options->method_trace_file_size_;
854
855 if (options->method_trace_) {
856 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0, false);
857 }
858
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800859 VLOG(startup) << "Runtime::Init exiting";
Carl Shapiro1fb86202011-06-27 17:43:13 -0700860 return true;
861}
862
Elliott Hughes038a8062011-09-18 14:12:41 -0700863void Runtime::InitNativeMethods() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800864 VLOG(startup) << "Runtime::InitNativeMethods entering";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700865 Thread* self = Thread::Current();
866 JNIEnv* env = self->GetJniEnv();
867
Elliott Hughes418d20f2011-09-22 14:00:39 -0700868 // Must be in the kNative state for calling native methods (JNI_OnLoad code).
Ian Rogers50b35e22012-10-04 10:09:15 -0700869 CHECK_EQ(self->GetState(), kNative);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700870
Elliott Hughes418d20f2011-09-22 14:00:39 -0700871 // First set up JniConstants, which is used by both the runtime's built-in native
872 // methods and libcore.
Elliott Hughesfea966e2011-09-22 10:26:20 -0700873 JniConstants::init(env);
Elliott Hugheseac76672012-05-24 21:56:51 -0700874 WellKnownClasses::Init(env);
Elliott Hughesfea966e2011-09-22 10:26:20 -0700875
Elliott Hughes418d20f2011-09-22 14:00:39 -0700876 // Then set up the native methods provided by the runtime itself.
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700877 RegisterRuntimeNativeMethods(env);
878
Elliott Hughes418d20f2011-09-22 14:00:39 -0700879 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad.
880 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's
881 // the library that implements System.loadLibrary!
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700882 {
883 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
884 std::string reason;
885 self->TransitionFromSuspendedToRunnable();
886 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, NULL, reason)) {
887 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
888 }
889 self->TransitionFromRunnableToSuspended(kNative);
890 }
Ian Rogersef28b142012-11-30 14:22:18 -0800891
892 // Initialize well known classes that may invoke runtime native methods.
893 WellKnownClasses::LateInit(env);
894
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800895 VLOG(startup) << "Runtime::InitNativeMethods exiting";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700896}
897
Ian Rogers365c1022012-06-22 15:05:28 -0700898void Runtime::InitThreadGroups(Thread* self) {
899 JNIEnvExt* env = self->GetJniEnv();
900 ScopedJniEnvLocalRefState env_state(env);
901 main_thread_group_ =
902 env->NewGlobalRef(env->GetStaticObjectField(WellKnownClasses::java_lang_ThreadGroup,
903 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700904 CHECK(main_thread_group_ != NULL || IsCompiler());
Ian Rogers365c1022012-06-22 15:05:28 -0700905 system_thread_group_ =
906 env->NewGlobalRef(env->GetStaticObjectField(WellKnownClasses::java_lang_ThreadGroup,
907 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700908 CHECK(system_thread_group_ != NULL || IsCompiler());
909}
910
911jobject Runtime::GetMainThreadGroup() const {
912 CHECK(main_thread_group_ != NULL || IsCompiler());
913 return main_thread_group_;
914}
915
916jobject Runtime::GetSystemThreadGroup() const {
917 CHECK(system_thread_group_ != NULL || IsCompiler());
918 return system_thread_group_;
Ian Rogers365c1022012-06-22 15:05:28 -0700919}
920
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700921void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
922#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
Ian Rogers5167c972012-02-03 10:41:20 -0800923 // Register Throwable first so that registration of other native methods can throw exceptions
924 REGISTER(register_java_lang_Throwable);
Brian Carlstromf91c8c32011-09-21 17:30:34 -0700925 REGISTER(register_dalvik_system_DexFile);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700926 REGISTER(register_dalvik_system_VMDebug);
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700927 REGISTER(register_dalvik_system_VMRuntime);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700928 REGISTER(register_dalvik_system_VMStack);
Elliott Hughes01158d72011-09-19 19:47:10 -0700929 REGISTER(register_dalvik_system_Zygote);
Elliott Hughesd369bb72011-09-12 14:41:14 -0700930 REGISTER(register_java_lang_Class);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700931 REGISTER(register_java_lang_Object);
932 REGISTER(register_java_lang_Runtime);
933 REGISTER(register_java_lang_String);
934 REGISTER(register_java_lang_System);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700935 REGISTER(register_java_lang_Thread);
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700936 REGISTER(register_java_lang_VMClassLoader);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700937 REGISTER(register_java_lang_reflect_Array);
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700938 REGISTER(register_java_lang_reflect_Constructor);
Brian Carlstromf867b6f2011-09-16 12:17:25 -0700939 REGISTER(register_java_lang_reflect_Field);
940 REGISTER(register_java_lang_reflect_Method);
Jesse Wilson95caa792011-10-12 18:14:17 -0400941 REGISTER(register_java_lang_reflect_Proxy);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700942 REGISTER(register_java_util_concurrent_atomic_AtomicLong);
Brian Carlstrom395520e2011-09-25 19:35:00 -0700943 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
Elliott Hughesf6a1e1e2011-10-25 16:28:04 -0700944 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
Elliott Hughes5ee7a8b2011-09-13 16:40:07 -0700945 REGISTER(register_sun_misc_Unsafe);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700946#undef REGISTER
947}
948
Elliott Hughesc967f782012-04-16 10:23:15 -0700949void Runtime::DumpForSigQuit(std::ostream& os) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700950 GetClassLinker()->DumpForSigQuit(os);
951 GetInternTable()->DumpForSigQuit(os);
Elliott Hughesae80b492012-04-24 10:43:17 -0700952 GetJavaVM()->DumpForSigQuit(os);
Elliott Hughesc967f782012-04-16 10:23:15 -0700953 GetHeap()->DumpForSigQuit(os);
Elliott Hughes42ee1422011-09-06 12:33:32 -0700954 os << "\n";
Elliott Hughes8daa0922011-09-11 13:46:25 -0700955
Elliott Hughesc967f782012-04-16 10:23:15 -0700956 thread_list_->DumpForSigQuit(os);
Ian Rogers56edc432013-01-18 16:51:51 -0800957 BaseMutex::DumpAll(os);
Elliott Hughese27955c2011-08-26 15:21:24 -0700958}
959
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800960void Runtime::DumpLockHolders(std::ostream& os) {
Ian Rogersb726dcb2012-09-05 08:57:23 -0700961 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800962 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
963 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
964 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700965 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
966 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800967 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n"
968 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n"
969 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n";
970 }
971}
972
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700973void Runtime::SetStatsEnabled(bool new_state) {
974 if (new_state == true) {
975 GetStats()->Clear(~0);
976 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
977 Thread::Current()->GetStats()->Clear(~0);
978 }
979 stats_enabled_ = new_state;
980}
981
982void Runtime::ResetStats(int kinds) {
983 GetStats()->Clear(kinds & 0xffff);
984 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
985 Thread::Current()->GetStats()->Clear(kinds >> 16);
986}
987
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700988int32_t Runtime::GetStat(int kind) {
989 RuntimeStats* stats;
990 if (kind < (1<<16)) {
991 stats = GetStats();
992 } else {
993 stats = Thread::Current()->GetStats();
994 kind >>= 16;
995 }
996 switch (kind) {
997 case KIND_ALLOCATED_OBJECTS:
998 return stats->allocated_objects;
999 case KIND_ALLOCATED_BYTES:
1000 return stats->allocated_bytes;
1001 case KIND_FREED_OBJECTS:
1002 return stats->freed_objects;
1003 case KIND_FREED_BYTES:
1004 return stats->freed_bytes;
1005 case KIND_GC_INVOCATIONS:
1006 return stats->gc_for_alloc_count;
1007 case KIND_CLASS_INIT_COUNT:
1008 return stats->class_init_count;
1009 case KIND_CLASS_INIT_TIME:
1010 // Convert ns to us, reduce to 32 bits.
Elliott Hughes398f64b2012-03-26 18:05:48 -07001011 return static_cast<int>(stats->class_init_time_ns / 1000);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -07001012 case KIND_EXT_ALLOCATED_OBJECTS:
1013 case KIND_EXT_ALLOCATED_BYTES:
1014 case KIND_EXT_FREED_OBJECTS:
1015 case KIND_EXT_FREED_BYTES:
1016 return 0; // backward compatibility
1017 default:
Elliott Hughes7b9d9962012-04-20 18:48:18 -07001018 LOG(FATAL) << "Unknown statistic " << kind;
Elliott Hughes9d5ccec2011-09-19 13:19:50 -07001019 return -1; // unreachable
1020 }
1021}
1022
Elliott Hughesc1674ed2011-08-25 18:09:09 -07001023void Runtime::BlockSignals() {
Elliott Hughes457005c2012-04-16 13:54:25 -07001024 SignalSet signals;
1025 signals.Add(SIGPIPE);
Elliott Hughesc1674ed2011-08-25 18:09:09 -07001026 // SIGQUIT is used to dump the runtime's state (including stack traces).
Elliott Hughes457005c2012-04-16 13:54:25 -07001027 signals.Add(SIGQUIT);
Elliott Hughes08795042012-04-03 14:48:52 -07001028 // SIGUSR1 is used to initiate a GC.
Elliott Hughes457005c2012-04-16 13:54:25 -07001029 signals.Add(SIGUSR1);
1030 signals.Block();
Elliott Hughesc1674ed2011-08-25 18:09:09 -07001031}
1032
Mathieu Chartier664bebf2012-11-12 16:54:11 -08001033bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group,
1034 bool create_peer) {
1035 bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL;
Elliott Hughes22869a92012-03-27 14:08:24 -07001036 if (thread_name == NULL) {
1037 LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
1038 }
Ian Rogers120f1c72012-09-28 17:17:10 -07001039 return success;
Carl Shapiro61e019d2011-07-14 16:53:09 -07001040}
1041
Elliott Hughesd92bec42011-09-02 17:04:36 -07001042void Runtime::DetachCurrentThread() {
Brian Carlstrom4d571432012-05-16 00:21:41 -07001043 Thread* self = Thread::Current();
1044 if (self == NULL) {
1045 LOG(FATAL) << "attempting to detach thread that is not attached";
1046 }
Ian Rogers0399dde2012-06-06 17:09:28 -07001047 if (self->HasManagedStack()) {
Elliott Hughes22869a92012-03-27 14:08:24 -07001048 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
1049 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001050 thread_list_->Unregister(self);
Carl Shapiro1fb86202011-06-27 17:43:13 -07001051}
1052
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001053void Runtime::VisitConcurrentRoots(RootVisitor* visitor, void* arg) {
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07001054 if (intern_table_->IsDirty()) {
1055 intern_table_->VisitRoots(visitor, arg);
1056 }
1057 if (class_linker_->IsDirty()) {
1058 class_linker_->VisitRoots(visitor, arg);
1059 }
1060}
1061
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001062void Runtime::VisitNonThreadRoots(RootVisitor* visitor, void* arg) {
Brian Carlstrome24fa612011-09-29 00:53:55 -07001063 java_vm_->VisitRoots(visitor, arg);
Elliott Hughes225f5a12012-06-11 11:23:48 -07001064 if (pre_allocated_OutOfMemoryError_ != NULL) {
1065 visitor(pre_allocated_OutOfMemoryError_, arg);
1066 }
Brian Carlstrome24fa612011-09-29 00:53:55 -07001067 visitor(jni_stub_array_, arg);
1068 visitor(abstract_method_error_stub_array_, arg);
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001069 for (int i = 0; i < Runtime::kLastTrampolineMethodType; i++) {
1070 visitor(resolution_stub_array_[i], arg);
1071 }
Ian Rogers19846512012-02-24 11:42:47 -08001072 visitor(resolution_method_, arg);
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001073 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Elliott Hughes225f5a12012-06-11 11:23:48 -07001074 visitor(callee_save_methods_[i], arg);
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001075 }
Brian Carlstrome24fa612011-09-29 00:53:55 -07001076}
1077
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001078void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor, void* arg) {
Mathieu Chartier858f1c52012-10-17 17:45:55 -07001079 thread_list_->VisitRoots(visitor, arg);
1080 VisitNonThreadRoots(visitor, arg);
1081}
1082
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07001083void Runtime::DirtyRoots() {
Mathieu Chartier02b6a782012-10-26 13:51:26 -07001084 CHECK(intern_table_ != NULL);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07001085 intern_table_->Dirty();
Mathieu Chartier02b6a782012-10-26 13:51:26 -07001086 CHECK(class_linker_ != NULL);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07001087 class_linker_->Dirty();
1088}
1089
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001090void Runtime::VisitRoots(RootVisitor* visitor, void* arg) {
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -07001091 VisitConcurrentRoots(visitor, arg);
1092 VisitNonConcurrentRoots(visitor, arg);
1093}
1094
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001095void Runtime::SetJniDlsymLookupStub(mirror::ByteArray* jni_stub_array) {
Brian Carlstromaded5f72011-10-07 17:15:04 -07001096 CHECK(jni_stub_array != NULL) << " jni_stub_array=" << jni_stub_array;
1097 CHECK(jni_stub_array_ == NULL || jni_stub_array_ == jni_stub_array)
1098 << "jni_stub_array_=" << jni_stub_array_ << " jni_stub_array=" << jni_stub_array;
Brian Carlstrome24fa612011-09-29 00:53:55 -07001099 jni_stub_array_ = jni_stub_array;
1100}
1101
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001102void Runtime::SetAbstractMethodErrorStubArray(mirror::ByteArray* abstract_method_error_stub_array) {
Brian Carlstrome24fa612011-09-29 00:53:55 -07001103 CHECK(abstract_method_error_stub_array != NULL);
1104 CHECK(abstract_method_error_stub_array_ == NULL || abstract_method_error_stub_array_ == abstract_method_error_stub_array);
1105 abstract_method_error_stub_array_ = abstract_method_error_stub_array;
1106}
1107
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001108void Runtime::SetResolutionStubArray(mirror::ByteArray* resolution_stub_array, TrampolineType type) {
Ian Rogersad25ac52011-10-04 19:13:33 -07001109 CHECK(resolution_stub_array != NULL);
Ian Rogers1cb0a1d2011-10-06 15:24:35 -07001110 CHECK(!HasResolutionStubArray(type) || resolution_stub_array_[type] == resolution_stub_array);
1111 resolution_stub_array_[type] = resolution_stub_array;
Ian Rogersad25ac52011-10-04 19:13:33 -07001112}
1113
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001114mirror::AbstractMethod* Runtime::CreateResolutionMethod() {
1115 mirror::Class* method_class = mirror::AbstractMethod::GetMethodClass();
Ian Rogers50b35e22012-10-04 10:09:15 -07001116 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001117 SirtRef<mirror::AbstractMethod>
1118 method(self, down_cast<mirror::AbstractMethod*>(method_class->AllocObject(self)));
Ian Rogers19846512012-02-24 11:42:47 -08001119 method->SetDeclaringClass(method_class);
1120 // TODO: use a special method for resolution method saves
1121 method->SetDexMethodIndex(DexFile::kDexNoIndex16);
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001122 mirror::ByteArray* unknown_resolution_stub = GetResolutionStubArray(kUnknownMethod);
Ian Rogers19846512012-02-24 11:42:47 -08001123 CHECK(unknown_resolution_stub != NULL);
1124 method->SetCode(unknown_resolution_stub->GetData());
1125 return method.get();
1126}
1127
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001128mirror::AbstractMethod* Runtime::CreateCalleeSaveMethod(InstructionSet instruction_set,
1129 CalleeSaveType type) {
1130 mirror::Class* method_class = mirror::AbstractMethod::GetMethodClass();
Ian Rogers50b35e22012-10-04 10:09:15 -07001131 Thread* self = Thread::Current();
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001132 SirtRef<mirror::AbstractMethod>
1133 method(self, down_cast<mirror::AbstractMethod*>(method_class->AllocObject(self)));
Ian Rogersff1ed472011-09-20 13:46:24 -07001134 method->SetDeclaringClass(method_class);
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001135 // TODO: use a special method for callee saves
Ian Rogers19846512012-02-24 11:42:47 -08001136 method->SetDexMethodIndex(DexFile::kDexNoIndex16);
Brian Carlstrom3320cf42011-10-04 14:58:28 -07001137 method->SetCode(NULL);
Brian Carlstromae826982011-11-09 01:33:42 -08001138 if ((instruction_set == kThumb2) || (instruction_set == kArm)) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001139 uint32_t ref_spills = (1 << art::arm::R5) | (1 << art::arm::R6) | (1 << art::arm::R7) |
1140 (1 << art::arm::R8) | (1 << art::arm::R10) | (1 << art::arm::R11);
1141 uint32_t arg_spills = (1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3);
1142 uint32_t all_spills = (1 << art::arm::R4) | (1 << art::arm::R9);
jeffhaofa147e22012-10-12 17:03:32 -07001143 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
1144 (type == kSaveAll ? all_spills : 0) | (1 << art::arm::LR);
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001145 uint32_t fp_all_spills = (1 << art::arm::S0) | (1 << art::arm::S1) | (1 << art::arm::S2) |
1146 (1 << art::arm::S3) | (1 << art::arm::S4) | (1 << art::arm::S5) |
1147 (1 << art::arm::S6) | (1 << art::arm::S7) | (1 << art::arm::S8) |
1148 (1 << art::arm::S9) | (1 << art::arm::S10) | (1 << art::arm::S11) |
1149 (1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) |
1150 (1 << art::arm::S15) | (1 << art::arm::S16) | (1 << art::arm::S17) |
1151 (1 << art::arm::S18) | (1 << art::arm::S19) | (1 << art::arm::S20) |
1152 (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) |
1153 (1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) |
1154 (1 << art::arm::S27) | (1 << art::arm::S28) | (1 << art::arm::S29) |
1155 (1 << art::arm::S30) | (1 << art::arm::S31);
1156 uint32_t fp_spills = type == kSaveAll ? fp_all_spills : 0;
1157 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
1158 __builtin_popcount(fp_spills) /* fprs */ +
1159 1 /* Method* */) * kPointerSize, kStackAlignment);
Ian Rogers15fdb8c2011-09-25 15:45:07 -07001160 method->SetFrameSizeInBytes(frame_size);
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001161 method->SetCoreSpillMask(core_spills);
1162 method->SetFpSpillMask(fp_spills);
jeffhao7fbee072012-08-24 17:56:54 -07001163 } else if (instruction_set == kMips) {
1164 uint32_t ref_spills = (1 << art::mips::S2) | (1 << art::mips::S3) | (1 << art::mips::S4) |
1165 (1 << art::mips::S5) | (1 << art::mips::S6) | (1 << art::mips::S7) |
1166 (1 << art::mips::FP);
1167 uint32_t arg_spills = (1 << art::mips::A1) | (1 << art::mips::A2) | (1 << art::mips::A3);
jeffhaofa147e22012-10-12 17:03:32 -07001168 uint32_t all_spills = (1 << art::mips::S0) | (1 << art::mips::S1);
jeffhao7fbee072012-08-24 17:56:54 -07001169 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
jeffhaofa147e22012-10-12 17:03:32 -07001170 (type == kSaveAll ? all_spills : 0) | (1 << art::mips::RA);
jeffhao7fbee072012-08-24 17:56:54 -07001171 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
jeffhao4eb68ed2012-10-17 16:41:07 -07001172 (type == kRefsAndArgs ? 0 : 5) /* reserve arg space */ +
jeffhao7fbee072012-08-24 17:56:54 -07001173 1 /* Method* */) * kPointerSize, kStackAlignment);
1174 method->SetFrameSizeInBytes(frame_size);
1175 method->SetCoreSpillMask(core_spills);
jeffhao07030602012-09-26 14:33:14 -07001176 method->SetFpSpillMask(0);
Brian Carlstromae826982011-11-09 01:33:42 -08001177 } else if (instruction_set == kX86) {
Ian Rogers7caad772012-03-30 01:07:54 -07001178 uint32_t ref_spills = (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
1179 uint32_t arg_spills = (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
1180 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
1181 (1 << art::x86::kNumberOfCpuRegisters); // fake return address callee save
1182 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
1183 1 /* Method* */) * kPointerSize, kStackAlignment);
1184 method->SetFrameSizeInBytes(frame_size);
1185 method->SetCoreSpillMask(core_spills);
Ian Rogersff1ed472011-09-20 13:46:24 -07001186 method->SetFpSpillMask(0);
1187 } else {
1188 UNIMPLEMENTED(FATAL);
1189 }
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001190 return method.get();
Ian Rogersff1ed472011-09-20 13:46:24 -07001191}
1192
Ian Rogers2dd0e2c2013-01-24 12:42:14 -08001193void Runtime::SetCalleeSaveMethod(mirror::AbstractMethod* method, CalleeSaveType type) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001194 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
Elliott Hughes225f5a12012-06-11 11:23:48 -07001195 callee_save_methods_[type] = method;
Brian Carlstrome24fa612011-09-29 00:53:55 -07001196}
1197
jeffhao725a9572012-11-13 18:20:12 -08001198void Runtime::EnableMethodTracing(Trace* trace) {
jeffhao2692b572011-12-16 15:42:28 -08001199 CHECK(!IsMethodTracingActive());
jeffhao725a9572012-11-13 18:20:12 -08001200 if (instrumentation_ == NULL) {
1201 instrumentation_ = new Instrumentation();
1202 }
1203 instrumentation_->SetTrace(trace);
jeffhao2692b572011-12-16 15:42:28 -08001204}
1205
1206void Runtime::DisableMethodTracing() {
1207 CHECK(IsMethodTracingActive());
jeffhao725a9572012-11-13 18:20:12 -08001208 instrumentation_->RemoveTrace();
1209}
1210
1211bool Runtime::IsMethodTracingActive() const {
1212 return instrumentation_ != NULL && instrumentation_->GetTrace() != NULL;
1213}
1214
1215Instrumentation* Runtime::GetInstrumentation() const {
1216 CHECK(IsMethodTracingActive());
1217 return instrumentation_;
jeffhao2692b572011-12-16 15:42:28 -08001218}
1219
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001220const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001221 if (class_loader == NULL) {
1222 return GetClassLinker()->GetBootClassPath();
1223 }
1224 CHECK(UseCompileTimeClassPath());
1225 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader);
1226 CHECK(it != compile_time_class_paths_.end());
1227 return it->second;
1228}
1229
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001230void Runtime::SetCompileTimeClassPath(jobject class_loader, std::vector<const DexFile*>& class_path) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001231 CHECK(!IsStarted());
1232 use_compile_time_class_path_ = true;
Elliott Hughesa0e18062012-04-13 15:59:59 -07001233 compile_time_class_paths_.Put(class_loader, class_path);
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001234}
1235
Carl Shapiro1fb86202011-06-27 17:43:13 -07001236} // namespace art