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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>
Mathieu Chartierda44d772014-04-01 15:01:46 -070025#include <valgrind.h>
Brian Carlstromdbf05b72011-12-15 00:55:24 -080026
Elliott Hughesffe67362011-07-17 12:09:27 -070027#include <cstdio>
28#include <cstdlib>
Brian Carlstrom8a436592011-08-15 21:27:23 -070029#include <limits>
Carl Shapiro2ed144c2011-07-26 16:52:08 -070030#include <vector>
Dave Allison39c3bfb2014-01-28 18:33:52 -080031#include <fcntl.h>
Elliott Hughesffe67362011-07-17 12:09:27 -070032
Ian Rogers166db042013-07-26 12:05:57 -070033#include "arch/arm/registers_arm.h"
Stuart Monteithb95a5342014-03-12 13:32:32 +000034#include "arch/arm64/registers_arm64.h"
Ian Rogers166db042013-07-26 12:05:57 -070035#include "arch/mips/registers_mips.h"
36#include "arch/x86/registers_x86.h"
Ian Rogersef7d42f2014-01-06 12:55:46 -080037#include "arch/x86_64/registers_x86_64.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080038#include "atomic.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070039#include "class_linker.h"
Elliott Hughes3bb81562011-10-21 18:52:59 -070040#include "debugger.h"
Ian Rogers1d54e732013-05-02 21:10:01 -070041#include "gc/accounting/card_table-inl.h"
42#include "gc/heap.h"
43#include "gc/space/space.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070044#include "image.h"
jeffhao725a9572012-11-13 18:20:12 -080045#include "instrumentation.h"
Elliott Hughescf4c6c42011-09-01 15:16:42 -070046#include "intern_table.h"
Elliott Hughesc5f7c912011-08-18 14:00:42 -070047#include "jni_internal.h"
Brian Carlstromea46f952013-07-30 01:26:50 -070048#include "mirror/art_field-inl.h"
49#include "mirror/art_method-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080050#include "mirror/array.h"
Ian Rogers62d6c772013-02-27 08:32:07 -080051#include "mirror/class-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080052#include "mirror/class_loader.h"
Mathieu Chartierc528dba2013-11-26 12:00:11 -080053#include "mirror/stack_trace_element.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080054#include "mirror/throwable.h"
Elliott Hughes32d6e1e2011-10-11 14:47:44 -070055#include "monitor.h"
Brian Carlstrom491ca9e2014-03-02 18:24:38 -080056#include "parsed_options.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070057#include "oat_file.h"
Ian Rogers53b8b092014-03-13 23:45:53 -070058#include "reflection.h"
Elliott Hughes726079d2011-10-07 18:43:44 -070059#include "ScopedLocalRef.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070060#include "scoped_thread_state_change.h"
Elliott Hughese27955c2011-08-26 15:21:24 -070061#include "signal_catcher.h"
Elliott Hughes457005c2012-04-16 13:54:25 -070062#include "signal_set.h"
Ian Rogers1f539342012-10-03 21:09:42 -070063#include "sirt_ref.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070064#include "thread.h"
Elliott Hughes8daa0922011-09-11 13:46:25 -070065#include "thread_list.h"
jeffhaob5e81852012-03-12 11:15:45 -070066#include "trace.h"
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +010067#include "transaction.h"
Dave Allison0aded082013-11-07 13:15:11 -080068#include "profiler.h"
Elliott Hughes3bb81562011-10-21 18:52:59 -070069#include "UniquePtr.h"
Ian Rogers776ac1f2012-04-13 23:36:36 -070070#include "verifier/method_verifier.h"
Elliott Hugheseac76672012-05-24 21:56:51 -070071#include "well_known_classes.h"
Carl Shapiro61e019d2011-07-14 16:53:09 -070072
Brian Carlstrom7934ac22013-07-26 10:54:15 -070073#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art.
Elliott Hughes90a33692011-08-30 13:27:07 -070074
Dave Allison39c3bfb2014-01-28 18:33:52 -080075#ifdef HAVE_ANDROID_OS
76#include "cutils/properties.h"
77#endif
78
Carl Shapiro1fb86202011-06-27 17:43:13 -070079namespace art {
80
Mathieu Chartierc751fdc2014-03-30 15:25:44 -070081static constexpr bool kEnableJavaStackTraceHandler = true;
Carl Shapiro2ed144c2011-07-26 16:52:08 -070082Runtime* Runtime::instance_ = NULL;
83
Elliott Hughesdcc24742011-09-07 14:02:44 -070084Runtime::Runtime()
Ian Rogers6ed19fd2014-03-20 08:10:17 -070085 : pre_allocated_OutOfMemoryError_(nullptr),
86 resolution_method_(nullptr),
87 imt_conflict_method_(nullptr),
88 default_imt_(nullptr),
89 compiler_callbacks_(nullptr),
Elliott Hughesd9c67be2012-02-02 19:54:06 -080090 is_zygote_(false),
Mathieu Chartier069387a2012-06-18 12:01:01 -070091 is_concurrent_gc_enabled_(true),
Anwar Ghuloum87183592013-08-14 12:12:19 -070092 is_explicit_gc_disabled_(false),
Elliott Hughes6cf23882012-06-15 15:42:07 -070093 default_stack_size_(0),
Ian Rogersef7d42f2014-01-06 12:55:46 -080094 heap_(nullptr),
Ian Rogersd9c4fc92013-10-01 19:45:43 -070095 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation),
Ian Rogersef7d42f2014-01-06 12:55:46 -080096 monitor_list_(nullptr),
97 monitor_pool_(nullptr),
98 thread_list_(nullptr),
99 intern_table_(nullptr),
100 class_linker_(nullptr),
101 signal_catcher_(nullptr),
102 java_vm_(nullptr),
Mathieu Chartier15d34022014-02-26 17:16:38 -0800103 fault_message_lock_("Fault message lock"),
104 fault_message_(""),
Ian Rogers719d1a32014-03-06 12:13:39 -0800105 method_verifier_lock_("Method verifiers lock"),
Ian Rogers120f1c72012-09-28 17:17:10 -0700106 threads_being_born_(0),
Ian Rogersc604d732012-10-14 16:09:54 -0700107 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
Elliott Hughes6b355752012-01-13 16:49:08 -0800108 shutting_down_(false),
Ian Rogers120f1c72012-09-28 17:17:10 -0700109 shutting_down_started_(false),
Elliott Hughesdcc24742011-09-07 14:02:44 -0700110 started_(false),
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700111 finished_starting_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800112 vfprintf_(nullptr),
113 exit_(nullptr),
114 abort_(nullptr),
jeffhao2692b572011-12-16 15:42:28 -0800115 stats_enabled_(false),
Mathieu Chartierda44d772014-04-01 15:01:46 -0700116 running_on_valgrind_(RUNNING_ON_VALGRIND > 0),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800117 profile_(false),
118 profile_period_s_(0),
119 profile_duration_s_(0),
120 profile_interval_us_(0),
121 profile_backoff_coefficient_(0),
122 method_trace_(false),
Ian Rogers776ac1f2012-04-13 23:36:36 -0700123 method_trace_file_size_(0),
Ian Rogers62d6c772013-02-27 08:32:07 -0800124 instrumentation_(),
Ian Rogers365c1022012-06-22 15:05:28 -0700125 use_compile_time_class_path_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800126 main_thread_group_(nullptr),
127 system_thread_group_(nullptr),
128 system_class_loader_(nullptr),
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100129 dump_gc_performance_on_shutdown_(false),
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100130 preinitialization_transaction_(nullptr),
Dave Allisonb373e092014-02-20 16:06:36 -0800131 null_pointer_handler_(nullptr),
132 suspend_handler_(nullptr),
133 stack_overflow_handler_(nullptr) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700134 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800135 callee_save_methods_[i] = nullptr;
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700136 }
Elliott Hughesdcc24742011-09-07 14:02:44 -0700137}
138
Carl Shapiro61e019d2011-07-14 16:53:09 -0700139Runtime::~Runtime() {
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800140 if (dump_gc_performance_on_shutdown_) {
141 // This can't be called from the Heap destructor below because it
142 // could call RosAlloc::InspectAll() which needs the thread_list
143 // to be still alive.
144 heap_->DumpGcPerformanceInfo(LOG(INFO));
145 }
146
Ian Rogers120f1c72012-09-28 17:17:10 -0700147 Thread* self = Thread::Current();
148 {
149 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
150 shutting_down_started_ = true;
151 while (threads_being_born_ > 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700152 shutdown_cond_->Wait(self);
Ian Rogers120f1c72012-09-28 17:17:10 -0700153 }
154 shutting_down_ = true;
155 }
Ian Rogers62d6c772013-02-27 08:32:07 -0800156 Trace::Shutdown();
jeffhaob5e81852012-03-12 11:15:45 -0700157
Mathieu Chartiera6399032012-06-11 18:49:50 -0700158 // Make sure to let the GC complete if it is running.
Mathieu Chartier590fee92013-09-13 13:46:47 -0700159 heap_->WaitForGcToComplete(self);
Mathieu Chartier35883cc2012-11-13 14:08:12 -0800160 heap_->DeleteThreadPool();
Mathieu Chartiera6399032012-06-11 18:49:50 -0700161
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700162 // Make sure our internal threads are dead before we start tearing down things they're using.
Elliott Hughese52e49b2012-04-02 16:05:44 -0700163 Dbg::StopJdwp();
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700164 delete signal_catcher_;
165
Elliott Hughes038a8062011-09-18 14:12:41 -0700166 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
Elliott Hughes93e74e82011-09-13 11:07:03 -0700167 delete thread_list_;
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700168 delete monitor_list_;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800169 delete monitor_pool_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700170 delete class_linker_;
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800171 delete heap_;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700172 delete intern_table_;
Elliott Hughesc5f7c912011-08-18 14:00:42 -0700173 delete java_vm_;
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700174 Thread::Shutdown();
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700175 QuasiAtomic::Shutdown();
Sebastien Hertz4d4adb12013-07-24 16:14:19 +0200176 verifier::MethodVerifier::Shutdown();
Carl Shapiro4acf4642011-07-26 18:54:13 -0700177 // TODO: acquire a static mutex on Runtime to avoid racing.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800178 CHECK(instance_ == nullptr || instance_ == this);
179 instance_ = nullptr;
Dave Allisonb373e092014-02-20 16:06:36 -0800180
181 delete null_pointer_handler_;
182 delete suspend_handler_;
183 delete stack_overflow_handler_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700184}
185
Elliott Hughese0918552011-10-28 17:18:29 -0700186struct AbortState {
187 void Dump(std::ostream& os) {
Ian Rogersf08e4732013-04-09 09:45:49 -0700188 if (gAborting > 1) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700189 os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
190 return;
191 }
Ian Rogersf08e4732013-04-09 09:45:49 -0700192 gAborting++;
Elliott Hughese0918552011-10-28 17:18:29 -0700193 os << "Runtime aborting...\n";
Elliott Hughes6c7d2442012-02-01 18:40:47 -0800194 if (Runtime::Current() == NULL) {
195 os << "(Runtime does not yet exist!)\n";
196 return;
197 }
Elliott Hughese0918552011-10-28 17:18:29 -0700198 Thread* self = Thread::Current();
199 if (self == NULL) {
200 os << "(Aborting thread was not attached to runtime!)\n";
201 } else {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700202 // TODO: we're aborting and the ScopedObjectAccess may attempt to acquire the mutator_lock_
203 // which may block indefinitely if there's a misbehaving thread holding it exclusively.
204 // The code below should be made robust to this.
205 ScopedObjectAccess soa(self);
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700206 os << "Aborting thread:\n";
Elliott Hughes899e7892012-01-24 14:57:32 -0800207 self->Dump(os);
208 if (self->IsExceptionPending()) {
Ian Rogers62d6c772013-02-27 08:32:07 -0800209 ThrowLocation throw_location;
210 mirror::Throwable* exception = self->GetException(&throw_location);
211 os << "Pending exception " << PrettyTypeOf(exception)
Ian Rogersbc939662013-08-15 10:26:54 -0700212 << " thrown by '" << throw_location.Dump() << "'\n"
Ian Rogers62d6c772013-02-27 08:32:07 -0800213 << exception->Dump();
Elliott Hughes899e7892012-01-24 14:57:32 -0800214 }
Elliott Hughese0918552011-10-28 17:18:29 -0700215 }
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700216 DumpAllThreads(os, self);
217 }
218
219 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS {
220 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self);
221 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self);
Ian Rogersfbd22912012-10-12 14:21:10 -0700222 if (!tll_already_held || !ml_already_held) {
223 os << "Dumping all threads without appropriate locks held:"
224 << (!tll_already_held ? " thread list lock" : "")
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700225 << (!ml_already_held ? " mutator lock" : "")
226 << "\n";
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700227 }
Ian Rogersfbd22912012-10-12 14:21:10 -0700228 os << "All threads:\n";
229 Runtime::Current()->GetThreadList()->DumpLocked(os);
Elliott Hughese0918552011-10-28 17:18:29 -0700230 }
231};
232
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700233void Runtime::Abort() {
Ian Rogersf08e4732013-04-09 09:45:49 -0700234 gAborting++; // set before taking any locks
Brian Carlstrom81b88712012-11-05 19:21:30 -0800235
Elliott Hughes131aef82012-01-27 11:53:35 -0800236 // Ensure that we don't have multiple threads trying to abort at once,
237 // which would result in significantly worse diagnostics.
Ian Rogers50b35e22012-10-04 10:09:15 -0700238 MutexLock mu(Thread::Current(), *Locks::abort_lock_);
Elliott Hughes131aef82012-01-27 11:53:35 -0800239
Elliott Hughesffe67362011-07-17 12:09:27 -0700240 // Get any pending output out of the way.
241 fflush(NULL);
242
243 // Many people have difficulty distinguish aborts from crashes,
244 // so be explicit.
Elliott Hughese0918552011-10-28 17:18:29 -0700245 AbortState state;
Elliott Hughes9ee5f9c2012-02-03 18:33:16 -0800246 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
Elliott Hughesffe67362011-07-17 12:09:27 -0700247
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700248 // Call the abort hook if we have one.
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700249 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700250 LOG(INTERNAL_FATAL) << "Calling abort hook...";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700251 Runtime::Current()->abort_();
252 // notreached
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700253 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700254 }
255
Elliott Hughesdd623db2013-06-11 11:20:23 -0700256#if defined(__GLIBC__)
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700257 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3),
258 // which POSIX defines in terms of raise(3), which POSIX defines in terms
259 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through
260 // libpthread, which means the stacks we dump would be useless. Calling
261 // tgkill(2) directly avoids that.
262 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700263 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM?
264 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3).
Brian Carlstrom700c8d32012-11-05 10:42:02 -0800265 exit(1);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700266#else
267 abort();
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700268#endif
Elliott Hughesffe67362011-07-17 12:09:27 -0700269 // notreached
270}
271
Narayan Kamath3de95a72014-04-02 12:54:23 +0100272void Runtime::PreZygoteFork() {
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700273 heap_->PreZygoteFork();
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700274}
275
Elliott Hughesbf86d042011-08-31 17:53:14 -0700276void Runtime::CallExitHook(jint status) {
277 if (exit_ != NULL) {
Elliott Hughes34e06962012-04-09 13:55:55 -0700278 ScopedThreadStateChange tsc(Thread::Current(), kNative);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700279 exit_(status);
280 LOG(WARNING) << "Exit hook returned instead of exiting!";
281 }
282}
283
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800284void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) {
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700285 GetInternTable()->SweepInternTableWeaks(visitor, arg);
286 GetMonitorList()->SweepMonitorList(visitor, arg);
287 GetJavaVM()->SweepJniWeakGlobals(visitor, arg);
Mathieu Chartier412c7fc2014-02-07 12:18:39 -0800288 Dbg::UpdateObjectPointers(visitor, arg);
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700289}
290
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700291bool Runtime::Create(const Options& options, bool ignore_unrecognized) {
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700292 // TODO: acquire a static mutex on Runtime to avoid racing.
293 if (Runtime::instance_ != NULL) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700294 return false;
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700295 }
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700296 InitLogging(NULL); // Calls Locks::Init() as a side effect.
Elliott Hughesdcc24742011-09-07 14:02:44 -0700297 instance_ = new Runtime;
298 if (!instance_->Init(options, ignore_unrecognized)) {
299 delete instance_;
300 instance_ = NULL;
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700301 return false;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700302 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700303 return true;
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700304}
Elliott Hughes0af55432011-08-17 18:37:28 -0700305
Brian Carlstromce888532013-10-10 00:32:58 -0700306jobject CreateSystemClassLoader() {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800307 if (Runtime::Current()->UseCompileTimeClassPath()) {
Brian Carlstromce888532013-10-10 00:32:58 -0700308 return NULL;
Brian Carlstromaded5f72011-10-07 17:15:04 -0700309 }
310
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700311 ScopedObjectAccess soa(Thread::Current());
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800312 ClassLinker* cl = Runtime::Current()->GetClassLinker();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700313
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800314 SirtRef<mirror::Class> class_loader_class(
315 soa.Self(), soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader));
316 CHECK(cl->EnsureInitialized(class_loader_class, true, true));
Brian Carlstromaded5f72011-10-07 17:15:04 -0700317
Brian Carlstromea46f952013-07-30 01:26:50 -0700318 mirror::ArtMethod* getSystemClassLoader =
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800319 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
Brian Carlstromdf143242011-10-10 18:05:34 -0700320 CHECK(getSystemClassLoader != NULL);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700321
Ian Rogers53b8b092014-03-13 23:45:53 -0700322 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800323 SirtRef<mirror::ClassLoader> class_loader(soa.Self(),
324 down_cast<mirror::ClassLoader*>(result.GetL()));
325 CHECK(class_loader.get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700326 JNIEnv* env = soa.Self()->GetJniEnv();
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800327 ScopedLocalRef<jobject> system_class_loader(env,
328 soa.AddLocalReference<jobject>(class_loader.get()));
329 CHECK(system_class_loader.get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700330
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800331 soa.Self()->SetClassLoaderOverride(class_loader.get());
Ian Rogers365c1022012-06-22 15:05:28 -0700332
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800333 SirtRef<mirror::Class> thread_class(
334 soa.Self(),
335 soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800336 CHECK(cl->EnsureInitialized(thread_class, true, true));
Ian Rogers365c1022012-06-22 15:05:28 -0700337
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800338 mirror::ArtField* contextClassLoader =
339 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;");
Jesse Wilson1b2b2f22011-11-22 11:47:44 -0500340 CHECK(contextClassLoader != NULL);
Ian Rogers365c1022012-06-22 15:05:28 -0700341
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100342 // We can't run in a transaction yet.
343 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.get());
Brian Carlstromce888532013-10-10 00:32:58 -0700344
345 return env->NewGlobalRef(system_class_loader.get());
Brian Carlstromaded5f72011-10-07 17:15:04 -0700346}
347
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700348bool Runtime::Start() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800349 VLOG(startup) << "Runtime::Start entering";
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700350
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700351 // Restore main thread state to kNative as expected by native code.
Ian Rogersa436fde2013-08-27 23:34:06 -0700352 Thread* self = Thread::Current();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700353 self->TransitionFromRunnableToSuspended(kNative);
354
Brian Carlstrom5d40f182011-09-26 22:29:18 -0700355 started_ = true;
356
Brian Carlstromae826982011-11-09 01:33:42 -0800357 // InitNativeMethods needs to be after started_ so that the classes
358 // it touches will have methods linked to the oat file if necessary.
359 InitNativeMethods();
360
Ian Rogers365c1022012-06-22 15:05:28 -0700361 // Initialize well known thread group values that may be accessed threads while attaching.
362 InitThreadGroups(self);
363
Jesse Wilson9a6bae82011-11-14 14:57:30 -0500364 Thread::FinishStartup();
365
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700366 if (is_zygote_) {
367 if (!InitZygote()) {
368 return false;
369 }
370 } else {
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700371 DidForkFromZygote();
372 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700373
Elliott Hughes85d15452011-09-16 17:33:01 -0700374 StartDaemonThreads();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700375
Brian Carlstromce888532013-10-10 00:32:58 -0700376 system_class_loader_ = CreateSystemClassLoader();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700377
Elliott Hughes225f5a12012-06-11 11:23:48 -0700378 self->GetJniEnv()->locals.AssertEmpty();
Elliott Hughes726079d2011-10-07 18:43:44 -0700379
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800380 VLOG(startup) << "Runtime::Start exiting";
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700381
382 finished_starting_ = true;
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700383
Dave Allison0aded082013-11-07 13:15:11 -0800384 if (profile_) {
385 // User has asked for a profile using -Xprofile
Dave Allison39c3bfb2014-01-28 18:33:52 -0800386 // Create the profile file if it doesn't exist.
387 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660);
388 if (fd >= 0) {
389 close(fd);
390 }
391 StartProfiler(profile_output_filename_.c_str(), "", true);
Dave Allison0aded082013-11-07 13:15:11 -0800392 }
393
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700394 return true;
Elliott Hughes85d15452011-09-16 17:33:01 -0700395}
396
Ian Rogers120f1c72012-09-28 17:17:10 -0700397void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) {
398 DCHECK_GT(threads_being_born_, 0U);
399 threads_being_born_--;
400 if (shutting_down_started_ && threads_being_born_ == 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700401 shutdown_cond_->Broadcast(Thread::Current());
Ian Rogers120f1c72012-09-28 17:17:10 -0700402 }
403}
404
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700405// Do zygote-mode-only initialization.
406bool Runtime::InitZygote() {
407 // zygote goes into its own process group
Brian Carlstromb1eba212013-07-17 18:07:19 -0700408 setpgid(0, 0);
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700409
410 // See storage config details at http://source.android.com/tech/storage/
411 // Create private mount namespace shared by all children
412 if (unshare(CLONE_NEWNS) == -1) {
413 PLOG(WARNING) << "Failed to unshare()";
414 return false;
415 }
416
417 // Mark rootfs as being a slave so that changes from default
418 // namespace only flow into our children.
419 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) {
420 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE";
421 return false;
422 }
423
424 // Create a staging tmpfs that is shared by our children; they will
425 // bind mount storage into their respective private namespaces, which
426 // are isolated from each other.
427 const char* target_base = getenv("EMULATED_STORAGE_TARGET");
428 if (target_base != NULL) {
429 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV,
Jeff Sharkey52cd1e82013-09-17 16:25:12 -0700430 "uid=0,gid=1028,mode=0751") == -1) {
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700431 LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
432 return false;
433 }
434 }
435
436 return true;
437}
438
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700439void Runtime::DidForkFromZygote() {
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700440 is_zygote_ = false;
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700441
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700442 // Create the thread pool.
443 heap_->CreateThreadPool();
444
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700445 StartSignalCatcher();
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700446
447 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y",
448 // this will pause the runtime, so we probably want this to come last.
449 Dbg::StartJdwp();
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700450}
451
452void Runtime::StartSignalCatcher() {
453 if (!is_zygote_) {
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700454 signal_catcher_ = new SignalCatcher(stack_trace_file_);
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700455 }
456}
457
Mathieu Chartier590fee92013-09-13 13:46:47 -0700458bool Runtime::IsShuttingDown(Thread* self) {
459 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
460 return IsShuttingDownLocked();
461}
462
Elliott Hughes85d15452011-09-16 17:33:01 -0700463void Runtime::StartDaemonThreads() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800464 VLOG(startup) << "Runtime::StartDaemonThreads entering";
Elliott Hughes85d15452011-09-16 17:33:01 -0700465
Elliott Hughes719b3232011-09-25 17:42:19 -0700466 Thread* self = Thread::Current();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700467
468 // Must be in the kNative state for calling native methods.
Ian Rogers50b35e22012-10-04 10:09:15 -0700469 CHECK_EQ(self->GetState(), kNative);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700470
Elliott Hughes719b3232011-09-25 17:42:19 -0700471 JNIEnv* env = self->GetJniEnv();
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700472 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons,
473 WellKnownClasses::java_lang_Daemons_start);
474 if (env->ExceptionCheck()) {
475 env->ExceptionDescribe();
476 LOG(FATAL) << "Error starting java.lang.Daemons";
477 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700478
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800479 VLOG(startup) << "Runtime::StartDaemonThreads exiting";
Carl Shapiro61e019d2011-07-14 16:53:09 -0700480}
481
Elliott Hughes0af55432011-08-17 18:37:28 -0700482bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) {
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700483 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700484
Elliott Hughes90a33692011-08-30 13:27:07 -0700485 UniquePtr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
486 if (options.get() == NULL) {
Brian Carlstrome24fa612011-09-29 00:53:55 -0700487 LOG(ERROR) << "Failed to parse options";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700488 return false;
489 }
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800490 VLOG(startup) << "Runtime::Init -verbose:startup enabled";
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700491
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700492 QuasiAtomic::Startup();
493
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800494 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
Elliott Hughes32d6e1e2011-10-11 14:47:44 -0700495
Brian Carlstroma004aa92012-02-08 18:05:09 -0800496 boot_class_path_string_ = options->boot_class_path_string_;
497 class_path_string_ = options->class_path_string_;
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700498 properties_ = options->properties_;
499
Vladimir Marko2b5eaa22013-12-13 13:59:30 +0000500 compiler_callbacks_ = options->compiler_callbacks_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700501 is_zygote_ = options->is_zygote_;
Anwar Ghuloum87183592013-08-14 12:12:19 -0700502 is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700503
Elliott Hughes0af55432011-08-17 18:37:28 -0700504 vfprintf_ = options->hook_vfprintf_;
505 exit_ = options->hook_exit_;
506 abort_ = options->hook_abort_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700507
Elliott Hughesbe759c62011-09-08 19:38:21 -0700508 default_stack_size_ = options->stack_size_;
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700509 stack_trace_file_ = options->stack_trace_file_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700510
Brian Carlstrom2ec65202014-03-03 15:16:37 -0800511 compiler_options_ = options->compiler_options_;
512 image_compiler_options_ = options->image_compiler_options_;
513
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700514 max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_;
515
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700516 monitor_list_ = new MonitorList;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800517 monitor_pool_ = MonitorPool::Create();
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800518 thread_list_ = new ThreadList;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700519 intern_table_ = new InternTable;
520
Logan Chiendd361c92012-04-10 23:40:37 +0800521
Ian Rogers62d6c772013-02-27 08:32:07 -0800522 if (options->interpreter_only_) {
523 GetInstrumentation()->ForceInterpretOnly();
524 }
525
Dave Allisonb373e092014-02-20 16:06:36 -0800526 if (options->explicit_checks_ != (ParsedOptions::kExplicitSuspendCheck |
527 ParsedOptions::kExplicitNullCheck |
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700528 ParsedOptions::kExplicitStackOverflowCheck) || kEnableJavaStackTraceHandler) {
Dave Allisonb373e092014-02-20 16:06:36 -0800529 fault_manager.Init();
530
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700531 // These need to be in a specific order. The null point check handler must be
532 // after the suspend check and stack overflow check handlers.
Dave Allisonb373e092014-02-20 16:06:36 -0800533 if ((options->explicit_checks_ & ParsedOptions::kExplicitSuspendCheck) == 0) {
534 suspend_handler_ = new SuspensionHandler(&fault_manager);
535 }
536
537 if ((options->explicit_checks_ & ParsedOptions::kExplicitStackOverflowCheck) == 0) {
538 stack_overflow_handler_ = new StackOverflowHandler(&fault_manager);
539 }
540
541 if ((options->explicit_checks_ & ParsedOptions::kExplicitNullCheck) == 0) {
542 null_pointer_handler_ = new NullPointerHandler(&fault_manager);
543 }
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700544
545 if (kEnableJavaStackTraceHandler) {
546 new JavaStackTraceHandler(&fault_manager);
547 }
Dave Allisonb373e092014-02-20 16:06:36 -0800548 }
549
Ian Rogers1d54e732013-05-02 21:10:01 -0700550 heap_ = new gc::Heap(options->heap_initial_size_,
551 options->heap_growth_limit_,
552 options->heap_min_free_,
553 options->heap_max_free_,
554 options->heap_target_utilization_,
555 options->heap_maximum_size_,
556 options->image_,
Mathieu Chartier0de9f732013-11-22 17:58:48 -0800557 options->collector_type_,
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800558 options->background_collector_type_,
Mathieu Chartier2775ee42013-08-20 17:43:47 -0700559 options->parallel_gc_threads_,
560 options->conc_gc_threads_,
561 options->low_memory_mode_,
562 options->long_pause_log_threshold_,
563 options->long_gc_log_threshold_,
Mathieu Chartier692fafd2013-11-29 17:24:40 -0800564 options->ignore_max_footprint_,
Mathieu Chartier938a03b2014-01-16 15:10:31 -0800565 options->use_tlab_,
566 options->verify_pre_gc_heap_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800567 options->verify_post_gc_heap_,
568 options->verify_pre_gc_rosalloc_,
569 options->verify_post_gc_rosalloc_);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700570
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800571 dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_;
572
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700573 BlockSignals();
Elliott Hughes457005c2012-04-16 13:54:25 -0700574 InitPlatformSignalHandlers();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700575
Elliott Hughesa0957642011-09-02 14:27:33 -0700576 java_vm_ = new JavaVMExt(this, options.get());
Elliott Hughes515a5bc2011-08-17 11:08:34 -0700577
Elliott Hughesbe759c62011-09-08 19:38:21 -0700578 Thread::Startup();
Elliott Hughesd92bec42011-09-02 17:04:36 -0700579
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800580 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating
581 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main
582 // thread, we do not get a java peer.
583 Thread* self = Thread::Attach("main", false, NULL, false);
Ian Rogersdd7624d2014-03-14 17:43:00 -0700584 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId);
Ian Rogers120f1c72012-09-28 17:17:10 -0700585 CHECK(self != NULL);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700586
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700587 // Set us to runnable so tools using a runtime can allocate and GC by default
Ian Rogers120f1c72012-09-28 17:17:10 -0700588 self->TransitionFromSuspendedToRunnable();
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700589
Ian Rogersa436fde2013-08-27 23:34:06 -0700590 // Now we're attached, we can take the heap locks and validate the heap.
Ian Rogers141d6222012-04-05 12:23:06 -0700591 GetHeap()->EnableObjectValidation();
592
Ian Rogers1d54e732013-05-02 21:10:01 -0700593 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700594 class_linker_ = new ClassLinker(intern_table_);
595 if (GetHeap()->HasImageSpace()) {
596 class_linker_->InitFromImage();
Brian Carlstroma004aa92012-02-08 18:05:09 -0800597 } else {
598 CHECK(options->boot_class_path_ != NULL);
599 CHECK_NE(options->boot_class_path_->size(), 0U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700600 class_linker_->InitFromCompiler(*options->boot_class_path_);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800601 }
602 CHECK(class_linker_ != NULL);
Sameer Abu Asal51a5fb72013-02-19 14:25:01 -0800603 verifier::MethodVerifier::Init();
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700604
jeffhaob5e81852012-03-12 11:15:45 -0700605 method_trace_ = options->method_trace_;
606 method_trace_file_ = options->method_trace_file_;
607 method_trace_file_size_ = options->method_trace_file_size_;
608
Dave Allison0aded082013-11-07 13:15:11 -0800609 // Extract the profile options.
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800610 // TODO: move into a Trace options struct?
Dave Allison0aded082013-11-07 13:15:11 -0800611 profile_period_s_ = options->profile_period_s_;
612 profile_duration_s_ = options->profile_duration_s_;
613 profile_interval_us_ = options->profile_interval_us_;
614 profile_backoff_coefficient_ = options->profile_backoff_coefficient_;
615 profile_ = options->profile_;
616 profile_output_filename_ = options->profile_output_filename_;
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800617 // TODO: move this to just be an Trace::Start argument
618 Trace::SetDefaultClockSource(options->profile_clock_source_);
Dave Allison0aded082013-11-07 13:15:11 -0800619
jeffhaob5e81852012-03-12 11:15:45 -0700620 if (options->method_trace_) {
Jeff Hao23009dc2013-08-22 15:36:42 -0700621 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0,
622 false, false, 0);
jeffhaob5e81852012-03-12 11:15:45 -0700623 }
624
Ian Rogersa436fde2013-08-27 23:34:06 -0700625 // Pre-allocate an OutOfMemoryError for the double-OOME case.
626 self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;",
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800627 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; "
628 "no stack available");
Ian Rogersa436fde2013-08-27 23:34:06 -0700629 pre_allocated_OutOfMemoryError_ = self->GetException(NULL);
630 self->ClearException();
631
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800632 VLOG(startup) << "Runtime::Init exiting";
Carl Shapiro1fb86202011-06-27 17:43:13 -0700633 return true;
634}
635
Elliott Hughes038a8062011-09-18 14:12:41 -0700636void Runtime::InitNativeMethods() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800637 VLOG(startup) << "Runtime::InitNativeMethods entering";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700638 Thread* self = Thread::Current();
639 JNIEnv* env = self->GetJniEnv();
640
Elliott Hughes418d20f2011-09-22 14:00:39 -0700641 // Must be in the kNative state for calling native methods (JNI_OnLoad code).
Ian Rogers50b35e22012-10-04 10:09:15 -0700642 CHECK_EQ(self->GetState(), kNative);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700643
Elliott Hughes418d20f2011-09-22 14:00:39 -0700644 // First set up JniConstants, which is used by both the runtime's built-in native
645 // methods and libcore.
Elliott Hughesfea966e2011-09-22 10:26:20 -0700646 JniConstants::init(env);
Elliott Hugheseac76672012-05-24 21:56:51 -0700647 WellKnownClasses::Init(env);
Elliott Hughesfea966e2011-09-22 10:26:20 -0700648
Elliott Hughes418d20f2011-09-22 14:00:39 -0700649 // Then set up the native methods provided by the runtime itself.
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700650 RegisterRuntimeNativeMethods(env);
651
Elliott Hughes418d20f2011-09-22 14:00:39 -0700652 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad.
653 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's
654 // the library that implements System.loadLibrary!
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700655 {
656 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
657 std::string reason;
658 self->TransitionFromSuspendedToRunnable();
Mathieu Chartier055d46c2014-02-06 11:22:17 -0800659 SirtRef<mirror::ClassLoader> class_loader(self, nullptr);
660 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700661 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
662 }
663 self->TransitionFromRunnableToSuspended(kNative);
664 }
Ian Rogersef28b142012-11-30 14:22:18 -0800665
666 // Initialize well known classes that may invoke runtime native methods.
667 WellKnownClasses::LateInit(env);
668
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800669 VLOG(startup) << "Runtime::InitNativeMethods exiting";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700670}
671
Ian Rogers365c1022012-06-22 15:05:28 -0700672void Runtime::InitThreadGroups(Thread* self) {
673 JNIEnvExt* env = self->GetJniEnv();
674 ScopedJniEnvLocalRefState env_state(env);
675 main_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800676 env->NewGlobalRef(env->GetStaticObjectField(
677 WellKnownClasses::java_lang_ThreadGroup,
678 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700679 CHECK(main_thread_group_ != NULL || IsCompiler());
Ian Rogers365c1022012-06-22 15:05:28 -0700680 system_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800681 env->NewGlobalRef(env->GetStaticObjectField(
682 WellKnownClasses::java_lang_ThreadGroup,
683 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700684 CHECK(system_thread_group_ != NULL || IsCompiler());
685}
686
687jobject Runtime::GetMainThreadGroup() const {
688 CHECK(main_thread_group_ != NULL || IsCompiler());
689 return main_thread_group_;
690}
691
692jobject Runtime::GetSystemThreadGroup() const {
693 CHECK(system_thread_group_ != NULL || IsCompiler());
694 return system_thread_group_;
Ian Rogers365c1022012-06-22 15:05:28 -0700695}
696
Brian Carlstromce888532013-10-10 00:32:58 -0700697jobject Runtime::GetSystemClassLoader() const {
698 CHECK(system_class_loader_ != NULL || IsCompiler());
699 return system_class_loader_;
700}
701
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700702void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
703#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
Ian Rogers5167c972012-02-03 10:41:20 -0800704 // Register Throwable first so that registration of other native methods can throw exceptions
705 REGISTER(register_java_lang_Throwable);
Brian Carlstromf91c8c32011-09-21 17:30:34 -0700706 REGISTER(register_dalvik_system_DexFile);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700707 REGISTER(register_dalvik_system_VMDebug);
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700708 REGISTER(register_dalvik_system_VMRuntime);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700709 REGISTER(register_dalvik_system_VMStack);
Narayan Kamath8b2c8b92014-03-31 16:44:54 +0100710 REGISTER(register_dalvik_system_ZygoteHooks);
Elliott Hughesd369bb72011-09-12 14:41:14 -0700711 REGISTER(register_java_lang_Class);
Ian Rogers8b2c0b92013-09-19 02:56:49 -0700712 REGISTER(register_java_lang_DexCache);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700713 REGISTER(register_java_lang_Object);
714 REGISTER(register_java_lang_Runtime);
715 REGISTER(register_java_lang_String);
716 REGISTER(register_java_lang_System);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700717 REGISTER(register_java_lang_Thread);
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700718 REGISTER(register_java_lang_VMClassLoader);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700719 REGISTER(register_java_lang_reflect_Array);
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700720 REGISTER(register_java_lang_reflect_Constructor);
Brian Carlstromf867b6f2011-09-16 12:17:25 -0700721 REGISTER(register_java_lang_reflect_Field);
722 REGISTER(register_java_lang_reflect_Method);
Jesse Wilson95caa792011-10-12 18:14:17 -0400723 REGISTER(register_java_lang_reflect_Proxy);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700724 REGISTER(register_java_util_concurrent_atomic_AtomicLong);
Brian Carlstrom395520e2011-09-25 19:35:00 -0700725 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
Elliott Hughesf6a1e1e2011-10-25 16:28:04 -0700726 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
Elliott Hughes5ee7a8b2011-09-13 16:40:07 -0700727 REGISTER(register_sun_misc_Unsafe);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700728#undef REGISTER
729}
730
Elliott Hughesc967f782012-04-16 10:23:15 -0700731void Runtime::DumpForSigQuit(std::ostream& os) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700732 GetClassLinker()->DumpForSigQuit(os);
733 GetInternTable()->DumpForSigQuit(os);
Elliott Hughesae80b492012-04-24 10:43:17 -0700734 GetJavaVM()->DumpForSigQuit(os);
Elliott Hughesc967f782012-04-16 10:23:15 -0700735 GetHeap()->DumpForSigQuit(os);
Elliott Hughes42ee1422011-09-06 12:33:32 -0700736 os << "\n";
Elliott Hughes8daa0922011-09-11 13:46:25 -0700737
Elliott Hughesc967f782012-04-16 10:23:15 -0700738 thread_list_->DumpForSigQuit(os);
Ian Rogers56edc432013-01-18 16:51:51 -0800739 BaseMutex::DumpAll(os);
Elliott Hughese27955c2011-08-26 15:21:24 -0700740}
741
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800742void Runtime::DumpLockHolders(std::ostream& os) {
Ian Rogersb726dcb2012-09-05 08:57:23 -0700743 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800744 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
745 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
746 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700747 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
748 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800749 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n"
750 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n"
751 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n";
752 }
753}
754
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700755void Runtime::SetStatsEnabled(bool new_state) {
756 if (new_state == true) {
757 GetStats()->Clear(~0);
758 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
759 Thread::Current()->GetStats()->Clear(~0);
Ian Rogersfa824272013-11-05 16:12:57 -0800760 GetInstrumentation()->InstrumentQuickAllocEntryPoints();
Hiroshi Yamauchi3b4c1892013-09-12 21:33:12 -0700761 } else {
Ian Rogersfa824272013-11-05 16:12:57 -0800762 GetInstrumentation()->UninstrumentQuickAllocEntryPoints();
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700763 }
764 stats_enabled_ = new_state;
765}
766
767void Runtime::ResetStats(int kinds) {
768 GetStats()->Clear(kinds & 0xffff);
769 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
770 Thread::Current()->GetStats()->Clear(kinds >> 16);
771}
772
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700773int32_t Runtime::GetStat(int kind) {
774 RuntimeStats* stats;
775 if (kind < (1<<16)) {
776 stats = GetStats();
777 } else {
778 stats = Thread::Current()->GetStats();
779 kind >>= 16;
780 }
781 switch (kind) {
782 case KIND_ALLOCATED_OBJECTS:
783 return stats->allocated_objects;
784 case KIND_ALLOCATED_BYTES:
785 return stats->allocated_bytes;
786 case KIND_FREED_OBJECTS:
787 return stats->freed_objects;
788 case KIND_FREED_BYTES:
789 return stats->freed_bytes;
790 case KIND_GC_INVOCATIONS:
791 return stats->gc_for_alloc_count;
792 case KIND_CLASS_INIT_COUNT:
793 return stats->class_init_count;
794 case KIND_CLASS_INIT_TIME:
795 // Convert ns to us, reduce to 32 bits.
Elliott Hughes398f64b2012-03-26 18:05:48 -0700796 return static_cast<int>(stats->class_init_time_ns / 1000);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700797 case KIND_EXT_ALLOCATED_OBJECTS:
798 case KIND_EXT_ALLOCATED_BYTES:
799 case KIND_EXT_FREED_OBJECTS:
800 case KIND_EXT_FREED_BYTES:
801 return 0; // backward compatibility
802 default:
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700803 LOG(FATAL) << "Unknown statistic " << kind;
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700804 return -1; // unreachable
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700805 }
806}
807
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700808void Runtime::BlockSignals() {
Elliott Hughes457005c2012-04-16 13:54:25 -0700809 SignalSet signals;
810 signals.Add(SIGPIPE);
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700811 // SIGQUIT is used to dump the runtime's state (including stack traces).
Elliott Hughes457005c2012-04-16 13:54:25 -0700812 signals.Add(SIGQUIT);
Elliott Hughes08795042012-04-03 14:48:52 -0700813 // SIGUSR1 is used to initiate a GC.
Elliott Hughes457005c2012-04-16 13:54:25 -0700814 signals.Add(SIGUSR1);
815 signals.Block();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700816}
817
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800818bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group,
819 bool create_peer) {
820 bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL;
Elliott Hughes22869a92012-03-27 14:08:24 -0700821 if (thread_name == NULL) {
822 LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
823 }
Ian Rogers120f1c72012-09-28 17:17:10 -0700824 return success;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700825}
826
Elliott Hughesd92bec42011-09-02 17:04:36 -0700827void Runtime::DetachCurrentThread() {
Brian Carlstrom4d571432012-05-16 00:21:41 -0700828 Thread* self = Thread::Current();
829 if (self == NULL) {
830 LOG(FATAL) << "attempting to detach thread that is not attached";
831 }
Ian Rogers0399dde2012-06-06 17:09:28 -0700832 if (self->HasManagedStack()) {
Elliott Hughes22869a92012-03-27 14:08:24 -0700833 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
834 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700835 thread_list_->Unregister(self);
Carl Shapiro1fb86202011-06-27 17:43:13 -0700836}
837
Ian Rogersa436fde2013-08-27 23:34:06 -0700838 mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() const {
839 if (pre_allocated_OutOfMemoryError_ == NULL) {
840 LOG(ERROR) << "Failed to return pre-allocated OOME";
841 }
842 return pre_allocated_OutOfMemoryError_;
843}
844
Mathieu Chartier893263b2014-03-04 11:07:42 -0800845void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) {
846 // Visit the classes held as static in mirror classes, these can be visited concurrently and only
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700847 // need to be visited once per GC since they never change.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800848 mirror::ArtField::VisitRoots(callback, arg);
849 mirror::ArtMethod::VisitRoots(callback, arg);
850 mirror::Class::VisitRoots(callback, arg);
851 mirror::StackTraceElement::VisitRoots(callback, arg);
852 mirror::String::VisitRoots(callback, arg);
853 mirror::Throwable::VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800854 // Visit all the primitive array types classes.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800855 mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg); // BooleanArray
856 mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg); // ByteArray
857 mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg); // CharArray
858 mirror::PrimitiveArray<double>::VisitRoots(callback, arg); // DoubleArray
859 mirror::PrimitiveArray<float>::VisitRoots(callback, arg); // FloatArray
860 mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg); // IntArray
861 mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg); // LongArray
862 mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg); // ShortArray
Mathieu Chartier893263b2014-03-04 11:07:42 -0800863}
864
865void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
866 intern_table_->VisitRoots(callback, arg, flags);
867 class_linker_->VisitRoots(callback, arg, flags);
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700868 Dbg::VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800869 if ((flags & kVisitRootFlagNewRoots) == 0) {
870 // Guaranteed to have no new roots in the constant roots.
871 VisitConstantRoots(callback, arg);
872 }
873}
874
875void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800876 java_vm_->VisitRoots(callback, arg);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700877 if (pre_allocated_OutOfMemoryError_ != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800878 callback(reinterpret_cast<mirror::Object**>(&pre_allocated_OutOfMemoryError_), arg, 0,
879 kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700880 DCHECK(pre_allocated_OutOfMemoryError_ != nullptr);
Elliott Hughes225f5a12012-06-11 11:23:48 -0700881 }
Mathieu Chartier815873e2014-02-13 18:02:13 -0800882 callback(reinterpret_cast<mirror::Object**>(&resolution_method_), arg, 0, kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700883 DCHECK(resolution_method_ != nullptr);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700884 if (HasImtConflictMethod()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800885 callback(reinterpret_cast<mirror::Object**>(&imt_conflict_method_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700886 }
887 if (HasDefaultImt()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800888 callback(reinterpret_cast<mirror::Object**>(&default_imt_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700889 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700890 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Mathieu Chartier590fee92013-09-13 13:46:47 -0700891 if (callee_save_methods_[i] != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800892 callback(reinterpret_cast<mirror::Object**>(&callee_save_methods_[i]), arg, 0,
893 kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700894 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700895 }
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800896 {
Ian Rogers719d1a32014-03-06 12:13:39 -0800897 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800898 for (verifier::MethodVerifier* verifier : method_verifiers_) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800899 verifier->VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800900 }
901 }
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100902 if (preinitialization_transaction_ != nullptr) {
903 preinitialization_transaction_->VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800904 }
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700905 instrumentation_.VisitRoots(callback, arg);
Brian Carlstrome24fa612011-09-29 00:53:55 -0700906}
907
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800908void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) {
909 thread_list_->VisitRoots(callback, arg);
910 VisitNonThreadRoots(callback, arg);
Mathieu Chartier858f1c52012-10-17 17:45:55 -0700911}
912
Mathieu Chartier893263b2014-03-04 11:07:42 -0800913void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
914 VisitConcurrentRoots(callback, arg, flags);
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800915 VisitNonConcurrentRoots(callback, arg);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -0700916}
917
Jeff Hao88474b42013-10-23 16:24:40 -0700918mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) {
919 Thread* self = Thread::Current();
920 SirtRef<mirror::ObjectArray<mirror::ArtMethod> > imtable(self, cl->AllocArtMethodArray(self, 64));
921 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod();
Mathieu Chartier590fee92013-09-13 13:46:47 -0700922 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) {
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100923 imtable->Set<false>(i, imt_conflict_method);
Jeff Hao88474b42013-10-23 16:24:40 -0700924 }
925 return imtable.get();
926}
927
928mirror::ArtMethod* Runtime::CreateImtConflictMethod() {
Jeff Hao88474b42013-10-23 16:24:40 -0700929 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -0800930 Runtime* runtime = Runtime::Current();
931 ClassLinker* class_linker = runtime->GetClassLinker();
932 SirtRef<mirror::ArtMethod> method(self, class_linker->AllocArtMethod(self));
Mathieu Chartier590fee92013-09-13 13:46:47 -0700933 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogersef7d42f2014-01-06 12:55:46 -0800934 // TODO: use a special method for imt conflict method saves.
Jeff Hao88474b42013-10-23 16:24:40 -0700935 method->SetDexMethodIndex(DexFile::kDexNoIndex);
936 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800937 if (runtime->IsCompiler()) {
938 method->SetEntryPointFromPortableCompiledCode(nullptr);
939 method->SetEntryPointFromQuickCompiledCode(nullptr);
940 } else {
941 method->SetEntryPointFromPortableCompiledCode(GetPortableImtConflictTrampoline(class_linker));
942 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictTrampoline(class_linker));
943 }
Jeff Hao88474b42013-10-23 16:24:40 -0700944 return method.get();
945}
946
Brian Carlstromea46f952013-07-30 01:26:50 -0700947mirror::ArtMethod* Runtime::CreateResolutionMethod() {
Ian Rogers50b35e22012-10-04 10:09:15 -0700948 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -0800949 Runtime* runtime = Runtime::Current();
950 ClassLinker* class_linker = runtime->GetClassLinker();
951 SirtRef<mirror::ArtMethod> method(self, class_linker->AllocArtMethod(self));
Mathieu Chartier590fee92013-09-13 13:46:47 -0700952 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers19846512012-02-24 11:42:47 -0800953 // TODO: use a special method for resolution method saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -0700954 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Jeff Hao58df3272013-04-22 15:28:53 -0700955 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800956 if (runtime->IsCompiler()) {
957 method->SetEntryPointFromPortableCompiledCode(nullptr);
958 method->SetEntryPointFromQuickCompiledCode(nullptr);
959 } else {
960 method->SetEntryPointFromPortableCompiledCode(GetPortableResolutionTrampoline(class_linker));
961 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionTrampoline(class_linker));
962 }
Ian Rogers19846512012-02-24 11:42:47 -0800963 return method.get();
964}
965
Brian Carlstromea46f952013-07-30 01:26:50 -0700966mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(InstructionSet instruction_set,
Mathieu Chartier590fee92013-09-13 13:46:47 -0700967 CalleeSaveType type) {
Ian Rogers50b35e22012-10-04 10:09:15 -0700968 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -0800969 Runtime* runtime = Runtime::Current();
970 ClassLinker* class_linker = runtime->GetClassLinker();
971 SirtRef<mirror::ArtMethod> method(self, class_linker->AllocArtMethod(self));
Mathieu Chartier590fee92013-09-13 13:46:47 -0700972 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800973 // TODO: use a special method for callee saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -0700974 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Ian Rogersef7d42f2014-01-06 12:55:46 -0800975 method->SetEntryPointFromPortableCompiledCode(nullptr);
976 method->SetEntryPointFromQuickCompiledCode(nullptr);
Brian Carlstromae826982011-11-09 01:33:42 -0800977 if ((instruction_set == kThumb2) || (instruction_set == kArm)) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700978 uint32_t ref_spills = (1 << art::arm::R5) | (1 << art::arm::R6) | (1 << art::arm::R7) |
979 (1 << art::arm::R8) | (1 << art::arm::R10) | (1 << art::arm::R11);
980 uint32_t arg_spills = (1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3);
981 uint32_t all_spills = (1 << art::arm::R4) | (1 << art::arm::R9);
jeffhaofa147e22012-10-12 17:03:32 -0700982 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
983 (type == kSaveAll ? all_spills : 0) | (1 << art::arm::LR);
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700984 uint32_t fp_all_spills = (1 << art::arm::S0) | (1 << art::arm::S1) | (1 << art::arm::S2) |
985 (1 << art::arm::S3) | (1 << art::arm::S4) | (1 << art::arm::S5) |
986 (1 << art::arm::S6) | (1 << art::arm::S7) | (1 << art::arm::S8) |
987 (1 << art::arm::S9) | (1 << art::arm::S10) | (1 << art::arm::S11) |
988 (1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) |
989 (1 << art::arm::S15) | (1 << art::arm::S16) | (1 << art::arm::S17) |
990 (1 << art::arm::S18) | (1 << art::arm::S19) | (1 << art::arm::S20) |
991 (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) |
992 (1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) |
993 (1 << art::arm::S27) | (1 << art::arm::S28) | (1 << art::arm::S29) |
994 (1 << art::arm::S30) | (1 << art::arm::S31);
995 uint32_t fp_spills = type == kSaveAll ? fp_all_spills : 0;
996 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
997 __builtin_popcount(fp_spills) /* fprs */ +
998 1 /* Method* */) * kPointerSize, kStackAlignment);
Ian Rogers15fdb8c2011-09-25 15:45:07 -0700999 method->SetFrameSizeInBytes(frame_size);
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001000 method->SetCoreSpillMask(core_spills);
1001 method->SetFpSpillMask(fp_spills);
jeffhao7fbee072012-08-24 17:56:54 -07001002 } else if (instruction_set == kMips) {
1003 uint32_t ref_spills = (1 << art::mips::S2) | (1 << art::mips::S3) | (1 << art::mips::S4) |
1004 (1 << art::mips::S5) | (1 << art::mips::S6) | (1 << art::mips::S7) |
Jeff Hao1f3bc2f2013-04-30 15:17:19 -07001005 (1 << art::mips::GP) | (1 << art::mips::FP);
jeffhao7fbee072012-08-24 17:56:54 -07001006 uint32_t arg_spills = (1 << art::mips::A1) | (1 << art::mips::A2) | (1 << art::mips::A3);
jeffhaofa147e22012-10-12 17:03:32 -07001007 uint32_t all_spills = (1 << art::mips::S0) | (1 << art::mips::S1);
jeffhao7fbee072012-08-24 17:56:54 -07001008 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
jeffhaofa147e22012-10-12 17:03:32 -07001009 (type == kSaveAll ? all_spills : 0) | (1 << art::mips::RA);
jeffhao7fbee072012-08-24 17:56:54 -07001010 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
Jeff Hao1f3bc2f2013-04-30 15:17:19 -07001011 (type == kRefsAndArgs ? 0 : 3) + 1 /* Method* */) *
1012 kPointerSize, kStackAlignment);
jeffhao7fbee072012-08-24 17:56:54 -07001013 method->SetFrameSizeInBytes(frame_size);
1014 method->SetCoreSpillMask(core_spills);
jeffhao07030602012-09-26 14:33:14 -07001015 method->SetFpSpillMask(0);
Brian Carlstromae826982011-11-09 01:33:42 -08001016 } else if (instruction_set == kX86) {
Ian Rogers7caad772012-03-30 01:07:54 -07001017 uint32_t ref_spills = (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
1018 uint32_t arg_spills = (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
1019 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
1020 (1 << art::x86::kNumberOfCpuRegisters); // fake return address callee save
1021 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
1022 1 /* Method* */) * kPointerSize, kStackAlignment);
1023 method->SetFrameSizeInBytes(frame_size);
1024 method->SetCoreSpillMask(core_spills);
Ian Rogersff1ed472011-09-20 13:46:24 -07001025 method->SetFpSpillMask(0);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001026 } else if (instruction_set == kX86_64) {
1027 uint32_t ref_spills =
Ian Rogers0177e532014-02-11 16:30:46 -08001028 (1 << art::x86_64::RBX) | (1 << art::x86_64::RBP) | (1 << art::x86_64::R12) |
1029 (1 << art::x86_64::R13) | (1 << art::x86_64::R14) | (1 << art::x86_64::R15);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001030 uint32_t arg_spills =
Ian Rogers0177e532014-02-11 16:30:46 -08001031 (1 << art::x86_64::RSI) | (1 << art::x86_64::RDX) | (1 << art::x86_64::RCX) |
1032 (1 << art::x86_64::R8) | (1 << art::x86_64::R9);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001033 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001034 (1 << art::x86_64::kNumberOfCpuRegisters); // fake return address callee save
Ian Rogers936b37f2014-02-14 00:52:24 -08001035 uint32_t fp_arg_spills =
1036 (1 << art::x86_64::XMM0) | (1 << art::x86_64::XMM1) | (1 << art::x86_64::XMM2) |
1037 (1 << art::x86_64::XMM3) | (1 << art::x86_64::XMM4) | (1 << art::x86_64::XMM5) |
1038 (1 << art::x86_64::XMM6) | (1 << art::x86_64::XMM7);
1039 uint32_t fp_spills = (type == kRefsAndArgs ? fp_arg_spills : 0);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001040 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
Ian Rogers936b37f2014-02-14 00:52:24 -08001041 __builtin_popcount(fp_spills) /* fprs */ +
Ian Rogersef7d42f2014-01-06 12:55:46 -08001042 1 /* Method* */) * kPointerSize, kStackAlignment);
1043 method->SetFrameSizeInBytes(frame_size);
1044 method->SetCoreSpillMask(core_spills);
Ian Rogers936b37f2014-02-14 00:52:24 -08001045 method->SetFpSpillMask(fp_spills);
Stuart Monteithb95a5342014-03-12 13:32:32 +00001046 } else if (instruction_set == kArm64) {
1047 // Callee saved registers
1048 uint32_t ref_spills = (1 << art::arm64::X19) | (1 << art::arm64::X20) | (1 << art::arm64::X21) |
1049 (1 << art::arm64::X22) | (1 << art::arm64::X23) | (1 << art::arm64::X24) |
1050 (1 << art::arm64::X25) | (1 << art::arm64::X26) | (1 << art::arm64::X27) |
1051 (1 << art::arm64::X28);
1052 // X0 is the method pointer. Not saved.
1053 uint32_t arg_spills = (1 << art::arm64::X1) | (1 << art::arm64::X2) | (1 << art::arm64::X3) |
1054 (1 << art::arm64::X4) | (1 << art::arm64::X5) | (1 << art::arm64::X6) |
1055 (1 << art::arm64::X7);
1056 // TODO This is conservative. Only ALL should include the thread register.
1057 // The thread register is not preserved by the aapcs64.
1058 // LR is always saved.
1059 uint32_t all_spills = 0; // (1 << art::arm64::LR);
1060 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
1061 (type == kSaveAll ? all_spills : 0) | (1 << art::arm64::FP)
1062 | (1 << art::arm64::X18) | (1 << art::arm64::LR);
1063
1064 // Save callee-saved floating point registers. Rest are scratch/parameters.
1065 uint32_t fp_arg_spills = (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) |
1066 (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) |
1067 (1 << art::arm64::D6) | (1 << art::arm64::D7);
1068 uint32_t fp_ref_spills = (1 << art::arm64::D8) | (1 << art::arm64::D9) | (1 << art::arm64::D10) |
1069 (1 << art::arm64::D11) | (1 << art::arm64::D12) | (1 << art::arm64::D13) |
1070 (1 << art::arm64::D14) | (1 << art::arm64::D15);
1071 uint32_t fp_all_spills = fp_arg_spills |
1072 (1 << art::arm64::D16) | (1 << art::arm64::D17) | (1 << art::arm64::D18) |
1073 (1 << art::arm64::D19) | (1 << art::arm64::D20) | (1 << art::arm64::D21) |
1074 (1 << art::arm64::D22) | (1 << art::arm64::D23) | (1 << art::arm64::D24) |
1075 (1 << art::arm64::D25) | (1 << art::arm64::D26) | (1 << art::arm64::D27) |
1076 (1 << art::arm64::D28) | (1 << art::arm64::D29) | (1 << art::arm64::D30) |
1077 (1 << art::arm64::D31);
1078 uint32_t fp_spills = fp_ref_spills | (type == kRefsAndArgs ? fp_arg_spills: 0)
1079 | (type == kSaveAll ? fp_all_spills : 0);
1080 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ +
1081 __builtin_popcount(fp_spills) /* fprs */ +
1082 1 /* Method* */) * kPointerSize, kStackAlignment);
1083 method->SetFrameSizeInBytes(frame_size);
1084 method->SetCoreSpillMask(core_spills);
1085 method->SetFpSpillMask(fp_spills);
Ian Rogersff1ed472011-09-20 13:46:24 -07001086 } else {
Ian Rogersef7d42f2014-01-06 12:55:46 -08001087 UNIMPLEMENTED(FATAL) << instruction_set;
Ian Rogersff1ed472011-09-20 13:46:24 -07001088 }
Brian Carlstrom40381fb2011-10-19 14:13:40 -07001089 return method.get();
Ian Rogersff1ed472011-09-20 13:46:24 -07001090}
1091
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001092void Runtime::DisallowNewSystemWeaks() {
1093 monitor_list_->DisallowNewMonitors();
1094 intern_table_->DisallowNewInterns();
1095 java_vm_->DisallowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001096 Dbg::DisallowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001097}
1098
1099void Runtime::AllowNewSystemWeaks() {
1100 monitor_list_->AllowNewMonitors();
1101 intern_table_->AllowNewInterns();
1102 java_vm_->AllowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001103 Dbg::AllowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001104}
1105
Brian Carlstromea46f952013-07-30 01:26:50 -07001106void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001107 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
Elliott Hughes225f5a12012-06-11 11:23:48 -07001108 callee_save_methods_[type] = method;
Brian Carlstrome24fa612011-09-29 00:53:55 -07001109}
1110
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001111const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001112 if (class_loader == NULL) {
1113 return GetClassLinker()->GetBootClassPath();
1114 }
1115 CHECK(UseCompileTimeClassPath());
1116 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader);
1117 CHECK(it != compile_time_class_paths_.end());
1118 return it->second;
1119}
1120
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001121void Runtime::SetCompileTimeClassPath(jobject class_loader,
1122 std::vector<const DexFile*>& class_path) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001123 CHECK(!IsStarted());
1124 use_compile_time_class_path_ = true;
Elliott Hughesa0e18062012-04-13 15:59:59 -07001125 compile_time_class_paths_.Put(class_loader, class_path);
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001126}
1127
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001128void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) {
1129 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001130 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001131 method_verifiers_.insert(verifier);
1132}
1133
1134void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) {
1135 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001136 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001137 auto it = method_verifiers_.find(verifier);
1138 CHECK(it != method_verifiers_.end());
1139 method_verifiers_.erase(it);
1140}
1141
Dave Allison39c3bfb2014-01-28 18:33:52 -08001142void Runtime::StartProfiler(const char* appDir, const char* procName, bool startImmediately) {
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001143 BackgroundMethodSamplingProfiler::Start(profile_period_s_, profile_duration_s_, appDir,
Dave Allison39c3bfb2014-01-28 18:33:52 -08001144 procName, profile_interval_us_,
1145 profile_backoff_coefficient_, startImmediately);
Dave Allison0aded082013-11-07 13:15:11 -08001146}
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001147
1148// Transaction support.
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001149void Runtime::EnterTransactionMode(Transaction* transaction) {
1150 DCHECK(IsCompiler());
1151 DCHECK(transaction != nullptr);
1152 DCHECK(!IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001153 preinitialization_transaction_ = transaction;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001154}
1155
1156void Runtime::ExitTransactionMode() {
1157 DCHECK(IsCompiler());
1158 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001159 preinitialization_transaction_ = nullptr;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001160}
1161
1162void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset,
1163 uint32_t value, bool is_volatile) const {
1164 DCHECK(IsCompiler());
1165 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001166 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001167}
1168
1169void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset,
1170 uint64_t value, bool is_volatile) const {
1171 DCHECK(IsCompiler());
1172 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001173 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001174}
1175
1176void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset,
1177 mirror::Object* value, bool is_volatile) const {
1178 DCHECK(IsCompiler());
1179 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001180 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001181}
1182
1183void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const {
1184 DCHECK(IsCompiler());
1185 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001186 preinitialization_transaction_->RecordWriteArray(array, index, value);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001187}
1188
1189void Runtime::RecordStrongStringInsertion(mirror::String* s, uint32_t hash_code) const {
1190 DCHECK(IsCompiler());
1191 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001192 preinitialization_transaction_->RecordStrongStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001193}
1194
1195void Runtime::RecordWeakStringInsertion(mirror::String* s, uint32_t hash_code) const {
1196 DCHECK(IsCompiler());
1197 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001198 preinitialization_transaction_->RecordWeakStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001199}
1200
1201void Runtime::RecordStrongStringRemoval(mirror::String* s, uint32_t hash_code) const {
1202 DCHECK(IsCompiler());
1203 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001204 preinitialization_transaction_->RecordStrongStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001205}
1206
1207void Runtime::RecordWeakStringRemoval(mirror::String* s, uint32_t hash_code) const {
1208 DCHECK(IsCompiler());
1209 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001210 preinitialization_transaction_->RecordWeakStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001211}
Mathieu Chartier15d34022014-02-26 17:16:38 -08001212
1213void Runtime::SetFaultMessage(const std::string& message) {
1214 MutexLock mu(Thread::Current(), fault_message_lock_);
1215 fault_message_ = message;
1216}
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001217
Dave Allison39c3bfb2014-01-28 18:33:52 -08001218void Runtime::UpdateProfilerState(int state) {
1219 LOG(DEBUG) << "Profiler state updated to " << state;
1220}
Carl Shapiro1fb86202011-06-27 17:43:13 -07001221} // namespace art