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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>
Ian Rogers700a4022014-05-19 16:49:03 -070030#include <memory>
Carl Shapiro2ed144c2011-07-26 16:52:08 -070031#include <vector>
Dave Allison39c3bfb2014-01-28 18:33:52 -080032#include <fcntl.h>
Elliott Hughesffe67362011-07-17 12:09:27 -070033
Vladimir Marko7624d252014-05-02 14:40:15 +010034#include "arch/arm/quick_method_frame_info_arm.h"
Ian Rogers166db042013-07-26 12:05:57 -070035#include "arch/arm/registers_arm.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010036#include "arch/arm64/quick_method_frame_info_arm64.h"
Stuart Monteithb95a5342014-03-12 13:32:32 +000037#include "arch/arm64/registers_arm64.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010038#include "arch/mips/quick_method_frame_info_mips.h"
Ian Rogers166db042013-07-26 12:05:57 -070039#include "arch/mips/registers_mips.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010040#include "arch/x86/quick_method_frame_info_x86.h"
Ian Rogers166db042013-07-26 12:05:57 -070041#include "arch/x86/registers_x86.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010042#include "arch/x86_64/quick_method_frame_info_x86_64.h"
Ian Rogersef7d42f2014-01-06 12:55:46 -080043#include "arch/x86_64/registers_x86_64.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080044#include "atomic.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070045#include "class_linker.h"
Elliott Hughes3bb81562011-10-21 18:52:59 -070046#include "debugger.h"
Ian Rogers1d54e732013-05-02 21:10:01 -070047#include "gc/accounting/card_table-inl.h"
48#include "gc/heap.h"
49#include "gc/space/space.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070050#include "image.h"
jeffhao725a9572012-11-13 18:20:12 -080051#include "instrumentation.h"
Elliott Hughescf4c6c42011-09-01 15:16:42 -070052#include "intern_table.h"
Elliott Hughesc5f7c912011-08-18 14:00:42 -070053#include "jni_internal.h"
Brian Carlstromea46f952013-07-30 01:26:50 -070054#include "mirror/art_field-inl.h"
55#include "mirror/art_method-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080056#include "mirror/array.h"
Ian Rogers62d6c772013-02-27 08:32:07 -080057#include "mirror/class-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080058#include "mirror/class_loader.h"
Mathieu Chartierc528dba2013-11-26 12:00:11 -080059#include "mirror/stack_trace_element.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080060#include "mirror/throwable.h"
Elliott Hughes32d6e1e2011-10-11 14:47:44 -070061#include "monitor.h"
Brian Carlstrom491ca9e2014-03-02 18:24:38 -080062#include "parsed_options.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070063#include "oat_file.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010064#include "quick/quick_method_frame_info.h"
Ian Rogers53b8b092014-03-13 23:45:53 -070065#include "reflection.h"
Elliott Hughes726079d2011-10-07 18:43:44 -070066#include "ScopedLocalRef.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070067#include "scoped_thread_state_change.h"
Elliott Hughese27955c2011-08-26 15:21:24 -070068#include "signal_catcher.h"
Elliott Hughes457005c2012-04-16 13:54:25 -070069#include "signal_set.h"
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070070#include "handle_scope-inl.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070071#include "thread.h"
Elliott Hughes8daa0922011-09-11 13:46:25 -070072#include "thread_list.h"
jeffhaob5e81852012-03-12 11:15:45 -070073#include "trace.h"
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +010074#include "transaction.h"
Dave Allison0aded082013-11-07 13:15:11 -080075#include "profiler.h"
Ian Rogers776ac1f2012-04-13 23:36:36 -070076#include "verifier/method_verifier.h"
Elliott Hugheseac76672012-05-24 21:56:51 -070077#include "well_known_classes.h"
Carl Shapiro61e019d2011-07-14 16:53:09 -070078
Brian Carlstrom7934ac22013-07-26 10:54:15 -070079#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art.
Elliott Hughes90a33692011-08-30 13:27:07 -070080
Dave Allison39c3bfb2014-01-28 18:33:52 -080081#ifdef HAVE_ANDROID_OS
82#include "cutils/properties.h"
83#endif
84
Carl Shapiro1fb86202011-06-27 17:43:13 -070085namespace art {
86
Mathieu Chartierc751fdc2014-03-30 15:25:44 -070087static constexpr bool kEnableJavaStackTraceHandler = true;
Ian Rogers8afeb852014-04-02 14:55:49 -070088const char* Runtime::kDefaultInstructionSetFeatures =
89 STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES);
Carl Shapiro2ed144c2011-07-26 16:52:08 -070090Runtime* Runtime::instance_ = NULL;
91
Elliott Hughesdcc24742011-09-07 14:02:44 -070092Runtime::Runtime()
Ian Rogers6ed19fd2014-03-20 08:10:17 -070093 : pre_allocated_OutOfMemoryError_(nullptr),
94 resolution_method_(nullptr),
95 imt_conflict_method_(nullptr),
96 default_imt_(nullptr),
Vladimir Marko7624d252014-05-02 14:40:15 +010097 instruction_set_(kNone),
Ian Rogers6ed19fd2014-03-20 08:10:17 -070098 compiler_callbacks_(nullptr),
Elliott Hughesd9c67be2012-02-02 19:54:06 -080099 is_zygote_(false),
Mathieu Chartier069387a2012-06-18 12:01:01 -0700100 is_concurrent_gc_enabled_(true),
Anwar Ghuloum87183592013-08-14 12:12:19 -0700101 is_explicit_gc_disabled_(false),
Elliott Hughes6cf23882012-06-15 15:42:07 -0700102 default_stack_size_(0),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800103 heap_(nullptr),
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700104 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800105 monitor_list_(nullptr),
106 monitor_pool_(nullptr),
107 thread_list_(nullptr),
108 intern_table_(nullptr),
109 class_linker_(nullptr),
110 signal_catcher_(nullptr),
111 java_vm_(nullptr),
Mathieu Chartier15d34022014-02-26 17:16:38 -0800112 fault_message_lock_("Fault message lock"),
113 fault_message_(""),
Ian Rogers719d1a32014-03-06 12:13:39 -0800114 method_verifier_lock_("Method verifiers lock"),
Ian Rogers120f1c72012-09-28 17:17:10 -0700115 threads_being_born_(0),
Ian Rogersc604d732012-10-14 16:09:54 -0700116 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
Elliott Hughes6b355752012-01-13 16:49:08 -0800117 shutting_down_(false),
Ian Rogers120f1c72012-09-28 17:17:10 -0700118 shutting_down_started_(false),
Elliott Hughesdcc24742011-09-07 14:02:44 -0700119 started_(false),
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700120 finished_starting_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800121 vfprintf_(nullptr),
122 exit_(nullptr),
123 abort_(nullptr),
jeffhao2692b572011-12-16 15:42:28 -0800124 stats_enabled_(false),
Mathieu Chartierda44d772014-04-01 15:01:46 -0700125 running_on_valgrind_(RUNNING_ON_VALGRIND > 0),
Calin Juravlec1b643c2014-05-30 23:44:11 +0100126 profiler_started_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800127 method_trace_(false),
Ian Rogers776ac1f2012-04-13 23:36:36 -0700128 method_trace_file_size_(0),
Ian Rogers62d6c772013-02-27 08:32:07 -0800129 instrumentation_(),
Ian Rogers365c1022012-06-22 15:05:28 -0700130 use_compile_time_class_path_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800131 main_thread_group_(nullptr),
132 system_thread_group_(nullptr),
133 system_class_loader_(nullptr),
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100134 dump_gc_performance_on_shutdown_(false),
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100135 preinitialization_transaction_(nullptr),
Dave Allisonb373e092014-02-20 16:06:36 -0800136 null_pointer_handler_(nullptr),
137 suspend_handler_(nullptr),
Jeff Hao4a200f52014-04-01 14:58:49 -0700138 stack_overflow_handler_(nullptr),
139 verify_(false) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700140 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800141 callee_save_methods_[i] = nullptr;
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700142 }
Elliott Hughesdcc24742011-09-07 14:02:44 -0700143}
144
Carl Shapiro61e019d2011-07-14 16:53:09 -0700145Runtime::~Runtime() {
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800146 if (dump_gc_performance_on_shutdown_) {
147 // This can't be called from the Heap destructor below because it
148 // could call RosAlloc::InspectAll() which needs the thread_list
149 // to be still alive.
150 heap_->DumpGcPerformanceInfo(LOG(INFO));
151 }
152
Ian Rogers120f1c72012-09-28 17:17:10 -0700153 Thread* self = Thread::Current();
154 {
155 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
156 shutting_down_started_ = true;
157 while (threads_being_born_ > 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700158 shutdown_cond_->Wait(self);
Ian Rogers120f1c72012-09-28 17:17:10 -0700159 }
160 shutting_down_ = true;
161 }
Wei Jin6a586912014-05-21 16:07:40 -0700162 // Shut down background profiler before the runtime exits.
Calin Juravlec1b643c2014-05-30 23:44:11 +0100163 if (profiler_started_) {
Wei Jin6a586912014-05-21 16:07:40 -0700164 BackgroundMethodSamplingProfiler::Shutdown();
165 }
166
Ian Rogers62d6c772013-02-27 08:32:07 -0800167 Trace::Shutdown();
jeffhaob5e81852012-03-12 11:15:45 -0700168
Mathieu Chartiera6399032012-06-11 18:49:50 -0700169 // Make sure to let the GC complete if it is running.
Mathieu Chartier89a201e2014-05-02 10:27:26 -0700170 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self);
Mathieu Chartier35883cc2012-11-13 14:08:12 -0800171 heap_->DeleteThreadPool();
Mathieu Chartiera6399032012-06-11 18:49:50 -0700172
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700173 // Make sure our internal threads are dead before we start tearing down things they're using.
Elliott Hughese52e49b2012-04-02 16:05:44 -0700174 Dbg::StopJdwp();
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700175 delete signal_catcher_;
176
Elliott Hughes038a8062011-09-18 14:12:41 -0700177 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
Elliott Hughes93e74e82011-09-13 11:07:03 -0700178 delete thread_list_;
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700179 delete monitor_list_;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800180 delete monitor_pool_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700181 delete class_linker_;
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800182 delete heap_;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700183 delete intern_table_;
Elliott Hughesc5f7c912011-08-18 14:00:42 -0700184 delete java_vm_;
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700185 Thread::Shutdown();
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700186 QuasiAtomic::Shutdown();
Sebastien Hertz4d4adb12013-07-24 16:14:19 +0200187 verifier::MethodVerifier::Shutdown();
Carl Shapiro4acf4642011-07-26 18:54:13 -0700188 // TODO: acquire a static mutex on Runtime to avoid racing.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800189 CHECK(instance_ == nullptr || instance_ == this);
190 instance_ = nullptr;
Dave Allisonb373e092014-02-20 16:06:36 -0800191
192 delete null_pointer_handler_;
193 delete suspend_handler_;
194 delete stack_overflow_handler_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700195}
196
Elliott Hughese0918552011-10-28 17:18:29 -0700197struct AbortState {
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700198 void Dump(std::ostream& os) NO_THREAD_SAFETY_ANALYSIS {
Ian Rogersf08e4732013-04-09 09:45:49 -0700199 if (gAborting > 1) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700200 os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
201 return;
202 }
Ian Rogersf08e4732013-04-09 09:45:49 -0700203 gAborting++;
Elliott Hughese0918552011-10-28 17:18:29 -0700204 os << "Runtime aborting...\n";
Elliott Hughes6c7d2442012-02-01 18:40:47 -0800205 if (Runtime::Current() == NULL) {
206 os << "(Runtime does not yet exist!)\n";
207 return;
208 }
Elliott Hughese0918552011-10-28 17:18:29 -0700209 Thread* self = Thread::Current();
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700210 if (self == nullptr) {
Elliott Hughese0918552011-10-28 17:18:29 -0700211 os << "(Aborting thread was not attached to runtime!)\n";
Ian Rogers37eecbd2014-05-11 02:08:15 -0700212 DumpKernelStack(os, GetTid(), " kernel: ", false);
213 DumpNativeStack(os, GetTid(), " native: ", nullptr);
Elliott Hughese0918552011-10-28 17:18:29 -0700214 } else {
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700215 os << "Aborting thread:\n";
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700216 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) {
217 DumpThread(os, self);
218 } else {
219 if (Locks::mutator_lock_->SharedTryLock(self)) {
220 DumpThread(os, self);
221 Locks::mutator_lock_->SharedUnlock(self);
222 }
Elliott Hughes899e7892012-01-24 14:57:32 -0800223 }
Elliott Hughese0918552011-10-28 17:18:29 -0700224 }
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700225 DumpAllThreads(os, self);
226 }
227
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700228 void DumpThread(std::ostream& os, Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
229 self->Dump(os);
230 if (self->IsExceptionPending()) {
231 ThrowLocation throw_location;
232 mirror::Throwable* exception = self->GetException(&throw_location);
233 os << "Pending exception " << PrettyTypeOf(exception)
234 << " thrown by '" << throw_location.Dump() << "'\n"
235 << exception->Dump();
236 }
237 }
238
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700239 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS {
240 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self);
241 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self);
Ian Rogersfbd22912012-10-12 14:21:10 -0700242 if (!tll_already_held || !ml_already_held) {
243 os << "Dumping all threads without appropriate locks held:"
244 << (!tll_already_held ? " thread list lock" : "")
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700245 << (!ml_already_held ? " mutator lock" : "")
246 << "\n";
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700247 }
Ian Rogersfbd22912012-10-12 14:21:10 -0700248 os << "All threads:\n";
249 Runtime::Current()->GetThreadList()->DumpLocked(os);
Elliott Hughese0918552011-10-28 17:18:29 -0700250 }
251};
252
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700253void Runtime::Abort() {
Ian Rogersf08e4732013-04-09 09:45:49 -0700254 gAborting++; // set before taking any locks
Brian Carlstrom81b88712012-11-05 19:21:30 -0800255
Elliott Hughes131aef82012-01-27 11:53:35 -0800256 // Ensure that we don't have multiple threads trying to abort at once,
257 // which would result in significantly worse diagnostics.
Ian Rogers50b35e22012-10-04 10:09:15 -0700258 MutexLock mu(Thread::Current(), *Locks::abort_lock_);
Elliott Hughes131aef82012-01-27 11:53:35 -0800259
Elliott Hughesffe67362011-07-17 12:09:27 -0700260 // Get any pending output out of the way.
261 fflush(NULL);
262
263 // Many people have difficulty distinguish aborts from crashes,
264 // so be explicit.
Elliott Hughese0918552011-10-28 17:18:29 -0700265 AbortState state;
Elliott Hughes9ee5f9c2012-02-03 18:33:16 -0800266 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
Elliott Hughesffe67362011-07-17 12:09:27 -0700267
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700268 // Call the abort hook if we have one.
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700269 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700270 LOG(INTERNAL_FATAL) << "Calling abort hook...";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700271 Runtime::Current()->abort_();
272 // notreached
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700273 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700274 }
275
Elliott Hughesdd623db2013-06-11 11:20:23 -0700276#if defined(__GLIBC__)
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700277 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3),
278 // which POSIX defines in terms of raise(3), which POSIX defines in terms
279 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through
280 // libpthread, which means the stacks we dump would be useless. Calling
281 // tgkill(2) directly avoids that.
282 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700283 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM?
284 // 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 -0800285 exit(1);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700286#else
287 abort();
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700288#endif
Elliott Hughesffe67362011-07-17 12:09:27 -0700289 // notreached
290}
291
Narayan Kamath3de95a72014-04-02 12:54:23 +0100292void Runtime::PreZygoteFork() {
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700293 heap_->PreZygoteFork();
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700294}
295
Elliott Hughesbf86d042011-08-31 17:53:14 -0700296void Runtime::CallExitHook(jint status) {
297 if (exit_ != NULL) {
Elliott Hughes34e06962012-04-09 13:55:55 -0700298 ScopedThreadStateChange tsc(Thread::Current(), kNative);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700299 exit_(status);
300 LOG(WARNING) << "Exit hook returned instead of exiting!";
301 }
302}
303
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800304void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) {
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700305 GetInternTable()->SweepInternTableWeaks(visitor, arg);
306 GetMonitorList()->SweepMonitorList(visitor, arg);
307 GetJavaVM()->SweepJniWeakGlobals(visitor, arg);
Mathieu Chartier412c7fc2014-02-07 12:18:39 -0800308 Dbg::UpdateObjectPointers(visitor, arg);
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700309}
310
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700311bool Runtime::Create(const Options& options, bool ignore_unrecognized) {
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700312 // TODO: acquire a static mutex on Runtime to avoid racing.
313 if (Runtime::instance_ != NULL) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700314 return false;
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700315 }
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700316 InitLogging(NULL); // Calls Locks::Init() as a side effect.
Elliott Hughesdcc24742011-09-07 14:02:44 -0700317 instance_ = new Runtime;
318 if (!instance_->Init(options, ignore_unrecognized)) {
319 delete instance_;
320 instance_ = NULL;
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700321 return false;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700322 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700323 return true;
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700324}
Elliott Hughes0af55432011-08-17 18:37:28 -0700325
Brian Carlstromce888532013-10-10 00:32:58 -0700326jobject CreateSystemClassLoader() {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800327 if (Runtime::Current()->UseCompileTimeClassPath()) {
Brian Carlstromce888532013-10-10 00:32:58 -0700328 return NULL;
Brian Carlstromaded5f72011-10-07 17:15:04 -0700329 }
330
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700331 ScopedObjectAccess soa(Thread::Current());
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800332 ClassLinker* cl = Runtime::Current()->GetClassLinker();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700333
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700334 StackHandleScope<3> hs(soa.Self());
335 Handle<mirror::Class> class_loader_class(
336 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader)));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800337 CHECK(cl->EnsureInitialized(class_loader_class, true, true));
Brian Carlstromaded5f72011-10-07 17:15:04 -0700338
Brian Carlstromea46f952013-07-30 01:26:50 -0700339 mirror::ArtMethod* getSystemClassLoader =
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800340 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
Brian Carlstromdf143242011-10-10 18:05:34 -0700341 CHECK(getSystemClassLoader != NULL);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700342
Ian Rogers53b8b092014-03-13 23:45:53 -0700343 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700344 Handle<mirror::ClassLoader> class_loader(
345 hs.NewHandle(down_cast<mirror::ClassLoader*>(result.GetL())));
346 CHECK(class_loader.Get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700347 JNIEnv* env = soa.Self()->GetJniEnv();
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800348 ScopedLocalRef<jobject> system_class_loader(env,
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700349 soa.AddLocalReference<jobject>(class_loader.Get()));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800350 CHECK(system_class_loader.get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700351
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700352 soa.Self()->SetClassLoaderOverride(class_loader.Get());
Ian Rogers365c1022012-06-22 15:05:28 -0700353
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700354 Handle<mirror::Class> thread_class(
355 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread)));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800356 CHECK(cl->EnsureInitialized(thread_class, true, true));
Ian Rogers365c1022012-06-22 15:05:28 -0700357
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800358 mirror::ArtField* contextClassLoader =
359 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;");
Jesse Wilson1b2b2f22011-11-22 11:47:44 -0500360 CHECK(contextClassLoader != NULL);
Ian Rogers365c1022012-06-22 15:05:28 -0700361
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100362 // We can't run in a transaction yet.
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700363 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.Get());
Brian Carlstromce888532013-10-10 00:32:58 -0700364
365 return env->NewGlobalRef(system_class_loader.get());
Brian Carlstromaded5f72011-10-07 17:15:04 -0700366}
367
Tsu Chiang Chuang12e6d742014-05-22 10:22:25 -0700368std::string Runtime::GetCompilerExecutable() const {
369 if (!compiler_executable_.empty()) {
370 return compiler_executable_;
371 }
372 std::string compiler_executable(GetAndroidRoot());
373 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat");
374 return compiler_executable;
375}
376
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700377bool Runtime::Start() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800378 VLOG(startup) << "Runtime::Start entering";
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700379
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700380 // Restore main thread state to kNative as expected by native code.
Ian Rogersa436fde2013-08-27 23:34:06 -0700381 Thread* self = Thread::Current();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700382 self->TransitionFromRunnableToSuspended(kNative);
383
Brian Carlstrom5d40f182011-09-26 22:29:18 -0700384 started_ = true;
385
Brian Carlstromae826982011-11-09 01:33:42 -0800386 // InitNativeMethods needs to be after started_ so that the classes
387 // it touches will have methods linked to the oat file if necessary.
388 InitNativeMethods();
389
Ian Rogers365c1022012-06-22 15:05:28 -0700390 // Initialize well known thread group values that may be accessed threads while attaching.
391 InitThreadGroups(self);
392
Jesse Wilson9a6bae82011-11-14 14:57:30 -0500393 Thread::FinishStartup();
394
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700395 if (is_zygote_) {
396 if (!InitZygote()) {
397 return false;
398 }
399 } else {
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700400 DidForkFromZygote();
401 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700402
Elliott Hughes85d15452011-09-16 17:33:01 -0700403 StartDaemonThreads();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700404
Brian Carlstromce888532013-10-10 00:32:58 -0700405 system_class_loader_ = CreateSystemClassLoader();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700406
Yevgeny Rouban35aef2c2014-05-19 16:19:36 +0700407 {
408 ScopedObjectAccess soa(self);
409 self->GetJniEnv()->locals.AssertEmpty();
410 }
Elliott Hughes726079d2011-10-07 18:43:44 -0700411
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800412 VLOG(startup) << "Runtime::Start exiting";
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700413 finished_starting_ = true;
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700414
Calin Juravlec1b643c2014-05-30 23:44:11 +0100415 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) {
416 // User has asked for a profile using -Xenable-profiler.
Dave Allison39c3bfb2014-01-28 18:33:52 -0800417 // Create the profile file if it doesn't exist.
418 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660);
419 if (fd >= 0) {
420 close(fd);
421 }
Calin Juravlec1b643c2014-05-30 23:44:11 +0100422 StartProfiler(profile_output_filename_.c_str());
Dave Allison0aded082013-11-07 13:15:11 -0800423 }
424
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700425 return true;
Elliott Hughes85d15452011-09-16 17:33:01 -0700426}
427
Ian Rogers120f1c72012-09-28 17:17:10 -0700428void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) {
429 DCHECK_GT(threads_being_born_, 0U);
430 threads_being_born_--;
431 if (shutting_down_started_ && threads_being_born_ == 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700432 shutdown_cond_->Broadcast(Thread::Current());
Ian Rogers120f1c72012-09-28 17:17:10 -0700433 }
434}
435
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700436// Do zygote-mode-only initialization.
437bool Runtime::InitZygote() {
438 // zygote goes into its own process group
Brian Carlstromb1eba212013-07-17 18:07:19 -0700439 setpgid(0, 0);
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700440
441 // See storage config details at http://source.android.com/tech/storage/
442 // Create private mount namespace shared by all children
443 if (unshare(CLONE_NEWNS) == -1) {
444 PLOG(WARNING) << "Failed to unshare()";
445 return false;
446 }
447
448 // Mark rootfs as being a slave so that changes from default
449 // namespace only flow into our children.
450 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) {
451 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE";
452 return false;
453 }
454
455 // Create a staging tmpfs that is shared by our children; they will
456 // bind mount storage into their respective private namespaces, which
457 // are isolated from each other.
458 const char* target_base = getenv("EMULATED_STORAGE_TARGET");
459 if (target_base != NULL) {
460 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV,
Jeff Sharkey52cd1e82013-09-17 16:25:12 -0700461 "uid=0,gid=1028,mode=0751") == -1) {
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700462 LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
463 return false;
464 }
465 }
466
467 return true;
468}
469
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700470void Runtime::DidForkFromZygote() {
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700471 is_zygote_ = false;
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700472
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700473 // Create the thread pool.
474 heap_->CreateThreadPool();
475
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700476 StartSignalCatcher();
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700477
478 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y",
479 // this will pause the runtime, so we probably want this to come last.
480 Dbg::StartJdwp();
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700481}
482
483void Runtime::StartSignalCatcher() {
484 if (!is_zygote_) {
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700485 signal_catcher_ = new SignalCatcher(stack_trace_file_);
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700486 }
487}
488
Mathieu Chartier590fee92013-09-13 13:46:47 -0700489bool Runtime::IsShuttingDown(Thread* self) {
490 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
491 return IsShuttingDownLocked();
492}
493
Elliott Hughes85d15452011-09-16 17:33:01 -0700494void Runtime::StartDaemonThreads() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800495 VLOG(startup) << "Runtime::StartDaemonThreads entering";
Elliott Hughes85d15452011-09-16 17:33:01 -0700496
Elliott Hughes719b3232011-09-25 17:42:19 -0700497 Thread* self = Thread::Current();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700498
499 // Must be in the kNative state for calling native methods.
Ian Rogers50b35e22012-10-04 10:09:15 -0700500 CHECK_EQ(self->GetState(), kNative);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700501
Elliott Hughes719b3232011-09-25 17:42:19 -0700502 JNIEnv* env = self->GetJniEnv();
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700503 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons,
504 WellKnownClasses::java_lang_Daemons_start);
505 if (env->ExceptionCheck()) {
506 env->ExceptionDescribe();
507 LOG(FATAL) << "Error starting java.lang.Daemons";
508 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700509
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800510 VLOG(startup) << "Runtime::StartDaemonThreads exiting";
Carl Shapiro61e019d2011-07-14 16:53:09 -0700511}
512
Elliott Hughes0af55432011-08-17 18:37:28 -0700513bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) {
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700514 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700515
Ian Rogers700a4022014-05-19 16:49:03 -0700516 std::unique_ptr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
Elliott Hughes90a33692011-08-30 13:27:07 -0700517 if (options.get() == NULL) {
Brian Carlstrome24fa612011-09-29 00:53:55 -0700518 LOG(ERROR) << "Failed to parse options";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700519 return false;
520 }
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800521 VLOG(startup) << "Runtime::Init -verbose:startup enabled";
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700522
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700523 QuasiAtomic::Startup();
524
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800525 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
Elliott Hughes32d6e1e2011-10-11 14:47:44 -0700526
Brian Carlstroma004aa92012-02-08 18:05:09 -0800527 boot_class_path_string_ = options->boot_class_path_string_;
528 class_path_string_ = options->class_path_string_;
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700529 properties_ = options->properties_;
530
Vladimir Marko2b5eaa22013-12-13 13:59:30 +0000531 compiler_callbacks_ = options->compiler_callbacks_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700532 is_zygote_ = options->is_zygote_;
Anwar Ghuloum87183592013-08-14 12:12:19 -0700533 is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700534
Elliott Hughes0af55432011-08-17 18:37:28 -0700535 vfprintf_ = options->hook_vfprintf_;
536 exit_ = options->hook_exit_;
537 abort_ = options->hook_abort_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700538
Elliott Hughesbe759c62011-09-08 19:38:21 -0700539 default_stack_size_ = options->stack_size_;
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700540 stack_trace_file_ = options->stack_trace_file_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700541
Tsu Chiang Chuang12e6d742014-05-22 10:22:25 -0700542 compiler_executable_ = options->compiler_executable_;
Brian Carlstrom2ec65202014-03-03 15:16:37 -0800543 compiler_options_ = options->compiler_options_;
544 image_compiler_options_ = options->image_compiler_options_;
545
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700546 max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_;
547
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700548 monitor_list_ = new MonitorList;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800549 monitor_pool_ = MonitorPool::Create();
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800550 thread_list_ = new ThreadList;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700551 intern_table_ = new InternTable;
552
Jeff Hao4a200f52014-04-01 14:58:49 -0700553 verify_ = options->verify_;
Logan Chiendd361c92012-04-10 23:40:37 +0800554
Ian Rogers62d6c772013-02-27 08:32:07 -0800555 if (options->interpreter_only_) {
556 GetInstrumentation()->ForceInterpretOnly();
557 }
558
Dave Allisonf4b80bc2014-05-14 15:41:25 -0700559 bool implicit_checks_supported = false;
560 switch (kRuntimeISA) {
561 case kArm:
562 case kThumb2:
563 implicit_checks_supported = true;
564 break;
565 default:
566 break;
567 }
568
569 if (implicit_checks_supported &&
570 (options->explicit_checks_ != (ParsedOptions::kExplicitSuspendCheck |
571 ParsedOptions::kExplicitNullCheck |
572 ParsedOptions::kExplicitStackOverflowCheck) || kEnableJavaStackTraceHandler)) {
Dave Allisonb373e092014-02-20 16:06:36 -0800573 fault_manager.Init();
574
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700575 // These need to be in a specific order. The null point check handler must be
576 // after the suspend check and stack overflow check handlers.
Dave Allisonb373e092014-02-20 16:06:36 -0800577 if ((options->explicit_checks_ & ParsedOptions::kExplicitSuspendCheck) == 0) {
578 suspend_handler_ = new SuspensionHandler(&fault_manager);
579 }
580
581 if ((options->explicit_checks_ & ParsedOptions::kExplicitStackOverflowCheck) == 0) {
582 stack_overflow_handler_ = new StackOverflowHandler(&fault_manager);
583 }
584
585 if ((options->explicit_checks_ & ParsedOptions::kExplicitNullCheck) == 0) {
586 null_pointer_handler_ = new NullPointerHandler(&fault_manager);
587 }
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700588
589 if (kEnableJavaStackTraceHandler) {
590 new JavaStackTraceHandler(&fault_manager);
591 }
Dave Allisonb373e092014-02-20 16:06:36 -0800592 }
593
Ian Rogers1d54e732013-05-02 21:10:01 -0700594 heap_ = new gc::Heap(options->heap_initial_size_,
595 options->heap_growth_limit_,
596 options->heap_min_free_,
597 options->heap_max_free_,
598 options->heap_target_utilization_,
Mathieu Chartier2f8da3e2014-04-15 15:37:02 -0700599 options->foreground_heap_growth_multiplier_,
Ian Rogers1d54e732013-05-02 21:10:01 -0700600 options->heap_maximum_size_,
601 options->image_,
Narayan Kamath11d9f062014-04-23 20:24:57 +0100602 options->image_isa_,
Mathieu Chartier0de9f732013-11-22 17:58:48 -0800603 options->collector_type_,
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800604 options->background_collector_type_,
Mathieu Chartier2775ee42013-08-20 17:43:47 -0700605 options->parallel_gc_threads_,
606 options->conc_gc_threads_,
607 options->low_memory_mode_,
608 options->long_pause_log_threshold_,
609 options->long_gc_log_threshold_,
Mathieu Chartier692fafd2013-11-29 17:24:40 -0800610 options->ignore_max_footprint_,
Mathieu Chartier938a03b2014-01-16 15:10:31 -0800611 options->use_tlab_,
612 options->verify_pre_gc_heap_,
Mathieu Chartier6f365cc2014-04-23 12:42:27 -0700613 options->verify_pre_sweeping_heap_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800614 options->verify_post_gc_heap_,
615 options->verify_pre_gc_rosalloc_,
Mathieu Chartier6f365cc2014-04-23 12:42:27 -0700616 options->verify_pre_sweeping_rosalloc_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800617 options->verify_post_gc_rosalloc_);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700618
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800619 dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_;
620
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700621 BlockSignals();
Elliott Hughes457005c2012-04-16 13:54:25 -0700622 InitPlatformSignalHandlers();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700623
Elliott Hughesa0957642011-09-02 14:27:33 -0700624 java_vm_ = new JavaVMExt(this, options.get());
Elliott Hughes515a5bc2011-08-17 11:08:34 -0700625
Elliott Hughesbe759c62011-09-08 19:38:21 -0700626 Thread::Startup();
Elliott Hughesd92bec42011-09-02 17:04:36 -0700627
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800628 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating
629 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main
630 // thread, we do not get a java peer.
631 Thread* self = Thread::Attach("main", false, NULL, false);
Ian Rogersdd7624d2014-03-14 17:43:00 -0700632 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId);
Ian Rogers120f1c72012-09-28 17:17:10 -0700633 CHECK(self != NULL);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700634
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700635 // Set us to runnable so tools using a runtime can allocate and GC by default
Ian Rogers120f1c72012-09-28 17:17:10 -0700636 self->TransitionFromSuspendedToRunnable();
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700637
Ian Rogersa436fde2013-08-27 23:34:06 -0700638 // Now we're attached, we can take the heap locks and validate the heap.
Ian Rogers141d6222012-04-05 12:23:06 -0700639 GetHeap()->EnableObjectValidation();
640
Ian Rogers1d54e732013-05-02 21:10:01 -0700641 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700642 class_linker_ = new ClassLinker(intern_table_);
643 if (GetHeap()->HasImageSpace()) {
644 class_linker_->InitFromImage();
Hiroshi Yamauchibd0fb612014-05-20 13:46:00 -0700645 if (kIsDebugBuild) {
646 GetHeap()->GetImageSpace()->VerifyImageAllocations();
647 }
Brian Carlstroma004aa92012-02-08 18:05:09 -0800648 } else {
649 CHECK(options->boot_class_path_ != NULL);
650 CHECK_NE(options->boot_class_path_->size(), 0U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700651 class_linker_->InitFromCompiler(*options->boot_class_path_);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800652 }
653 CHECK(class_linker_ != NULL);
Sameer Abu Asal51a5fb72013-02-19 14:25:01 -0800654 verifier::MethodVerifier::Init();
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700655
jeffhaob5e81852012-03-12 11:15:45 -0700656 method_trace_ = options->method_trace_;
657 method_trace_file_ = options->method_trace_file_;
658 method_trace_file_size_ = options->method_trace_file_size_;
659
Dave Allison0aded082013-11-07 13:15:11 -0800660 profile_output_filename_ = options->profile_output_filename_;
Calin Juravlec1b643c2014-05-30 23:44:11 +0100661 profiler_options_ = options->profiler_options_;
662
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800663 // TODO: move this to just be an Trace::Start argument
664 Trace::SetDefaultClockSource(options->profile_clock_source_);
Dave Allison0aded082013-11-07 13:15:11 -0800665
jeffhaob5e81852012-03-12 11:15:45 -0700666 if (options->method_trace_) {
Jeff Hao23009dc2013-08-22 15:36:42 -0700667 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0,
668 false, false, 0);
jeffhaob5e81852012-03-12 11:15:45 -0700669 }
670
Ian Rogersa436fde2013-08-27 23:34:06 -0700671 // Pre-allocate an OutOfMemoryError for the double-OOME case.
672 self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;",
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800673 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; "
674 "no stack available");
Ian Rogersa436fde2013-08-27 23:34:06 -0700675 pre_allocated_OutOfMemoryError_ = self->GetException(NULL);
676 self->ClearException();
677
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800678 VLOG(startup) << "Runtime::Init exiting";
Carl Shapiro1fb86202011-06-27 17:43:13 -0700679 return true;
680}
681
Elliott Hughes038a8062011-09-18 14:12:41 -0700682void Runtime::InitNativeMethods() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800683 VLOG(startup) << "Runtime::InitNativeMethods entering";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700684 Thread* self = Thread::Current();
685 JNIEnv* env = self->GetJniEnv();
686
Elliott Hughes418d20f2011-09-22 14:00:39 -0700687 // Must be in the kNative state for calling native methods (JNI_OnLoad code).
Ian Rogers50b35e22012-10-04 10:09:15 -0700688 CHECK_EQ(self->GetState(), kNative);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700689
Elliott Hughes418d20f2011-09-22 14:00:39 -0700690 // First set up JniConstants, which is used by both the runtime's built-in native
691 // methods and libcore.
Elliott Hughesfea966e2011-09-22 10:26:20 -0700692 JniConstants::init(env);
Elliott Hugheseac76672012-05-24 21:56:51 -0700693 WellKnownClasses::Init(env);
Elliott Hughesfea966e2011-09-22 10:26:20 -0700694
Elliott Hughes418d20f2011-09-22 14:00:39 -0700695 // Then set up the native methods provided by the runtime itself.
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700696 RegisterRuntimeNativeMethods(env);
697
Elliott Hughes418d20f2011-09-22 14:00:39 -0700698 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad.
699 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's
700 // the library that implements System.loadLibrary!
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700701 {
702 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
703 std::string reason;
704 self->TransitionFromSuspendedToRunnable();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700705 StackHandleScope<1> hs(self);
706 auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr));
Mathieu Chartier055d46c2014-02-06 11:22:17 -0800707 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700708 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
709 }
710 self->TransitionFromRunnableToSuspended(kNative);
711 }
Ian Rogersef28b142012-11-30 14:22:18 -0800712
713 // Initialize well known classes that may invoke runtime native methods.
714 WellKnownClasses::LateInit(env);
715
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800716 VLOG(startup) << "Runtime::InitNativeMethods exiting";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700717}
718
Ian Rogers365c1022012-06-22 15:05:28 -0700719void Runtime::InitThreadGroups(Thread* self) {
720 JNIEnvExt* env = self->GetJniEnv();
721 ScopedJniEnvLocalRefState env_state(env);
722 main_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800723 env->NewGlobalRef(env->GetStaticObjectField(
724 WellKnownClasses::java_lang_ThreadGroup,
725 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700726 CHECK(main_thread_group_ != NULL || IsCompiler());
Ian Rogers365c1022012-06-22 15:05:28 -0700727 system_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800728 env->NewGlobalRef(env->GetStaticObjectField(
729 WellKnownClasses::java_lang_ThreadGroup,
730 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700731 CHECK(system_thread_group_ != NULL || IsCompiler());
732}
733
734jobject Runtime::GetMainThreadGroup() const {
735 CHECK(main_thread_group_ != NULL || IsCompiler());
736 return main_thread_group_;
737}
738
739jobject Runtime::GetSystemThreadGroup() const {
740 CHECK(system_thread_group_ != NULL || IsCompiler());
741 return system_thread_group_;
Ian Rogers365c1022012-06-22 15:05:28 -0700742}
743
Brian Carlstromce888532013-10-10 00:32:58 -0700744jobject Runtime::GetSystemClassLoader() const {
745 CHECK(system_class_loader_ != NULL || IsCompiler());
746 return system_class_loader_;
747}
748
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700749void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
750#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
Ian Rogers5167c972012-02-03 10:41:20 -0800751 // Register Throwable first so that registration of other native methods can throw exceptions
752 REGISTER(register_java_lang_Throwable);
Brian Carlstromf91c8c32011-09-21 17:30:34 -0700753 REGISTER(register_dalvik_system_DexFile);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700754 REGISTER(register_dalvik_system_VMDebug);
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700755 REGISTER(register_dalvik_system_VMRuntime);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700756 REGISTER(register_dalvik_system_VMStack);
Narayan Kamath8b2c8b92014-03-31 16:44:54 +0100757 REGISTER(register_dalvik_system_ZygoteHooks);
Elliott Hughesd369bb72011-09-12 14:41:14 -0700758 REGISTER(register_java_lang_Class);
Ian Rogers8b2c0b92013-09-19 02:56:49 -0700759 REGISTER(register_java_lang_DexCache);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700760 REGISTER(register_java_lang_Object);
761 REGISTER(register_java_lang_Runtime);
762 REGISTER(register_java_lang_String);
763 REGISTER(register_java_lang_System);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700764 REGISTER(register_java_lang_Thread);
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700765 REGISTER(register_java_lang_VMClassLoader);
Mathieu Chartier78f7b4c2014-05-06 10:57:27 -0700766 REGISTER(register_java_lang_ref_Reference);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700767 REGISTER(register_java_lang_reflect_Array);
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700768 REGISTER(register_java_lang_reflect_Constructor);
Brian Carlstromf867b6f2011-09-16 12:17:25 -0700769 REGISTER(register_java_lang_reflect_Field);
770 REGISTER(register_java_lang_reflect_Method);
Jesse Wilson95caa792011-10-12 18:14:17 -0400771 REGISTER(register_java_lang_reflect_Proxy);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700772 REGISTER(register_java_util_concurrent_atomic_AtomicLong);
Brian Carlstrom395520e2011-09-25 19:35:00 -0700773 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
Elliott Hughesf6a1e1e2011-10-25 16:28:04 -0700774 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
Elliott Hughes5ee7a8b2011-09-13 16:40:07 -0700775 REGISTER(register_sun_misc_Unsafe);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700776#undef REGISTER
777}
778
Elliott Hughesc967f782012-04-16 10:23:15 -0700779void Runtime::DumpForSigQuit(std::ostream& os) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700780 GetClassLinker()->DumpForSigQuit(os);
781 GetInternTable()->DumpForSigQuit(os);
Elliott Hughesae80b492012-04-24 10:43:17 -0700782 GetJavaVM()->DumpForSigQuit(os);
Elliott Hughesc967f782012-04-16 10:23:15 -0700783 GetHeap()->DumpForSigQuit(os);
Elliott Hughes42ee1422011-09-06 12:33:32 -0700784 os << "\n";
Elliott Hughes8daa0922011-09-11 13:46:25 -0700785
Elliott Hughesc967f782012-04-16 10:23:15 -0700786 thread_list_->DumpForSigQuit(os);
Ian Rogers56edc432013-01-18 16:51:51 -0800787 BaseMutex::DumpAll(os);
Elliott Hughese27955c2011-08-26 15:21:24 -0700788}
789
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800790void Runtime::DumpLockHolders(std::ostream& os) {
Ian Rogersb726dcb2012-09-05 08:57:23 -0700791 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800792 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
793 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
794 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700795 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
796 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800797 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n"
798 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n"
799 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n";
800 }
801}
802
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700803void Runtime::SetStatsEnabled(bool new_state) {
804 if (new_state == true) {
805 GetStats()->Clear(~0);
806 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
807 Thread::Current()->GetStats()->Clear(~0);
Ian Rogersfa824272013-11-05 16:12:57 -0800808 GetInstrumentation()->InstrumentQuickAllocEntryPoints();
Hiroshi Yamauchi3b4c1892013-09-12 21:33:12 -0700809 } else {
Ian Rogersfa824272013-11-05 16:12:57 -0800810 GetInstrumentation()->UninstrumentQuickAllocEntryPoints();
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700811 }
812 stats_enabled_ = new_state;
813}
814
815void Runtime::ResetStats(int kinds) {
816 GetStats()->Clear(kinds & 0xffff);
817 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
818 Thread::Current()->GetStats()->Clear(kinds >> 16);
819}
820
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700821int32_t Runtime::GetStat(int kind) {
822 RuntimeStats* stats;
823 if (kind < (1<<16)) {
824 stats = GetStats();
825 } else {
826 stats = Thread::Current()->GetStats();
827 kind >>= 16;
828 }
829 switch (kind) {
830 case KIND_ALLOCATED_OBJECTS:
831 return stats->allocated_objects;
832 case KIND_ALLOCATED_BYTES:
833 return stats->allocated_bytes;
834 case KIND_FREED_OBJECTS:
835 return stats->freed_objects;
836 case KIND_FREED_BYTES:
837 return stats->freed_bytes;
838 case KIND_GC_INVOCATIONS:
839 return stats->gc_for_alloc_count;
840 case KIND_CLASS_INIT_COUNT:
841 return stats->class_init_count;
842 case KIND_CLASS_INIT_TIME:
843 // Convert ns to us, reduce to 32 bits.
Elliott Hughes398f64b2012-03-26 18:05:48 -0700844 return static_cast<int>(stats->class_init_time_ns / 1000);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700845 case KIND_EXT_ALLOCATED_OBJECTS:
846 case KIND_EXT_ALLOCATED_BYTES:
847 case KIND_EXT_FREED_OBJECTS:
848 case KIND_EXT_FREED_BYTES:
849 return 0; // backward compatibility
850 default:
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700851 LOG(FATAL) << "Unknown statistic " << kind;
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700852 return -1; // unreachable
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700853 }
854}
855
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700856void Runtime::BlockSignals() {
Elliott Hughes457005c2012-04-16 13:54:25 -0700857 SignalSet signals;
858 signals.Add(SIGPIPE);
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700859 // SIGQUIT is used to dump the runtime's state (including stack traces).
Elliott Hughes457005c2012-04-16 13:54:25 -0700860 signals.Add(SIGQUIT);
Elliott Hughes08795042012-04-03 14:48:52 -0700861 // SIGUSR1 is used to initiate a GC.
Elliott Hughes457005c2012-04-16 13:54:25 -0700862 signals.Add(SIGUSR1);
863 signals.Block();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700864}
865
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800866bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group,
867 bool create_peer) {
868 bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL;
Elliott Hughes22869a92012-03-27 14:08:24 -0700869 if (thread_name == NULL) {
870 LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
871 }
Ian Rogers120f1c72012-09-28 17:17:10 -0700872 return success;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700873}
874
Elliott Hughesd92bec42011-09-02 17:04:36 -0700875void Runtime::DetachCurrentThread() {
Brian Carlstrom4d571432012-05-16 00:21:41 -0700876 Thread* self = Thread::Current();
877 if (self == NULL) {
878 LOG(FATAL) << "attempting to detach thread that is not attached";
879 }
Ian Rogers0399dde2012-06-06 17:09:28 -0700880 if (self->HasManagedStack()) {
Elliott Hughes22869a92012-03-27 14:08:24 -0700881 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
882 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700883 thread_list_->Unregister(self);
Carl Shapiro1fb86202011-06-27 17:43:13 -0700884}
885
Ian Rogersa436fde2013-08-27 23:34:06 -0700886 mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() const {
887 if (pre_allocated_OutOfMemoryError_ == NULL) {
888 LOG(ERROR) << "Failed to return pre-allocated OOME";
889 }
890 return pre_allocated_OutOfMemoryError_;
891}
892
Mathieu Chartier893263b2014-03-04 11:07:42 -0800893void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) {
894 // Visit the classes held as static in mirror classes, these can be visited concurrently and only
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700895 // need to be visited once per GC since they never change.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800896 mirror::ArtField::VisitRoots(callback, arg);
897 mirror::ArtMethod::VisitRoots(callback, arg);
898 mirror::Class::VisitRoots(callback, arg);
899 mirror::StackTraceElement::VisitRoots(callback, arg);
900 mirror::String::VisitRoots(callback, arg);
901 mirror::Throwable::VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800902 // Visit all the primitive array types classes.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800903 mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg); // BooleanArray
904 mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg); // ByteArray
905 mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg); // CharArray
906 mirror::PrimitiveArray<double>::VisitRoots(callback, arg); // DoubleArray
907 mirror::PrimitiveArray<float>::VisitRoots(callback, arg); // FloatArray
908 mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg); // IntArray
909 mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg); // LongArray
910 mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg); // ShortArray
Mathieu Chartier893263b2014-03-04 11:07:42 -0800911}
912
913void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
914 intern_table_->VisitRoots(callback, arg, flags);
915 class_linker_->VisitRoots(callback, arg, flags);
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700916 Dbg::VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800917 if ((flags & kVisitRootFlagNewRoots) == 0) {
918 // Guaranteed to have no new roots in the constant roots.
919 VisitConstantRoots(callback, arg);
920 }
921}
922
923void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800924 java_vm_->VisitRoots(callback, arg);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700925 if (pre_allocated_OutOfMemoryError_ != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800926 callback(reinterpret_cast<mirror::Object**>(&pre_allocated_OutOfMemoryError_), arg, 0,
927 kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700928 DCHECK(pre_allocated_OutOfMemoryError_ != nullptr);
Elliott Hughes225f5a12012-06-11 11:23:48 -0700929 }
Mathieu Chartier815873e2014-02-13 18:02:13 -0800930 callback(reinterpret_cast<mirror::Object**>(&resolution_method_), arg, 0, kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700931 DCHECK(resolution_method_ != nullptr);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700932 if (HasImtConflictMethod()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800933 callback(reinterpret_cast<mirror::Object**>(&imt_conflict_method_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700934 }
935 if (HasDefaultImt()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800936 callback(reinterpret_cast<mirror::Object**>(&default_imt_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700937 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700938 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Mathieu Chartier590fee92013-09-13 13:46:47 -0700939 if (callee_save_methods_[i] != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800940 callback(reinterpret_cast<mirror::Object**>(&callee_save_methods_[i]), arg, 0,
941 kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700942 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700943 }
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800944 {
Ian Rogers719d1a32014-03-06 12:13:39 -0800945 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800946 for (verifier::MethodVerifier* verifier : method_verifiers_) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800947 verifier->VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800948 }
949 }
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100950 if (preinitialization_transaction_ != nullptr) {
951 preinitialization_transaction_->VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800952 }
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700953 instrumentation_.VisitRoots(callback, arg);
Brian Carlstrome24fa612011-09-29 00:53:55 -0700954}
955
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800956void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) {
957 thread_list_->VisitRoots(callback, arg);
958 VisitNonThreadRoots(callback, arg);
Mathieu Chartier858f1c52012-10-17 17:45:55 -0700959}
960
Mathieu Chartier893263b2014-03-04 11:07:42 -0800961void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800962 VisitNonConcurrentRoots(callback, arg);
Mathieu Chartier119c6bd2014-05-09 14:11:47 -0700963 VisitConcurrentRoots(callback, arg, flags);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -0700964}
965
Jeff Hao88474b42013-10-23 16:24:40 -0700966mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) {
967 Thread* self = Thread::Current();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700968 StackHandleScope<1> hs(self);
969 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable(
970 hs.NewHandle(cl->AllocArtMethodArray(self, 64)));
Jeff Hao88474b42013-10-23 16:24:40 -0700971 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod();
Mathieu Chartier590fee92013-09-13 13:46:47 -0700972 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) {
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100973 imtable->Set<false>(i, imt_conflict_method);
Jeff Hao88474b42013-10-23 16:24:40 -0700974 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700975 return imtable.Get();
Jeff Hao88474b42013-10-23 16:24:40 -0700976}
977
978mirror::ArtMethod* Runtime::CreateImtConflictMethod() {
Jeff Hao88474b42013-10-23 16:24:40 -0700979 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -0800980 Runtime* runtime = Runtime::Current();
981 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700982 StackHandleScope<1> hs(self);
983 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -0700984 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogersef7d42f2014-01-06 12:55:46 -0800985 // TODO: use a special method for imt conflict method saves.
Jeff Hao88474b42013-10-23 16:24:40 -0700986 method->SetDexMethodIndex(DexFile::kDexNoIndex);
987 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800988 if (runtime->IsCompiler()) {
989 method->SetEntryPointFromPortableCompiledCode(nullptr);
990 method->SetEntryPointFromQuickCompiledCode(nullptr);
991 } else {
992 method->SetEntryPointFromPortableCompiledCode(GetPortableImtConflictTrampoline(class_linker));
993 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictTrampoline(class_linker));
994 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700995 return method.Get();
Jeff Hao88474b42013-10-23 16:24:40 -0700996}
997
Brian Carlstromea46f952013-07-30 01:26:50 -0700998mirror::ArtMethod* Runtime::CreateResolutionMethod() {
Ian Rogers50b35e22012-10-04 10:09:15 -0700999 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -08001000 Runtime* runtime = Runtime::Current();
1001 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001002 StackHandleScope<1> hs(self);
1003 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -07001004 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers19846512012-02-24 11:42:47 -08001005 // TODO: use a special method for resolution method saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -07001006 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Jeff Hao58df3272013-04-22 15:28:53 -07001007 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -08001008 if (runtime->IsCompiler()) {
1009 method->SetEntryPointFromPortableCompiledCode(nullptr);
1010 method->SetEntryPointFromQuickCompiledCode(nullptr);
1011 } else {
1012 method->SetEntryPointFromPortableCompiledCode(GetPortableResolutionTrampoline(class_linker));
1013 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionTrampoline(class_linker));
1014 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001015 return method.Get();
Ian Rogers19846512012-02-24 11:42:47 -08001016}
1017
Vladimir Marko7624d252014-05-02 14:40:15 +01001018mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) {
Ian Rogers50b35e22012-10-04 10:09:15 -07001019 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -08001020 Runtime* runtime = Runtime::Current();
1021 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001022 StackHandleScope<1> hs(self);
1023 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -07001024 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001025 // TODO: use a special method for callee saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -07001026 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001027 method->SetEntryPointFromPortableCompiledCode(nullptr);
1028 method->SetEntryPointFromQuickCompiledCode(nullptr);
Vladimir Marko7624d252014-05-02 14:40:15 +01001029 DCHECK_NE(instruction_set_, kNone);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001030 return method.Get();
Ian Rogersff1ed472011-09-20 13:46:24 -07001031}
1032
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001033void Runtime::DisallowNewSystemWeaks() {
1034 monitor_list_->DisallowNewMonitors();
1035 intern_table_->DisallowNewInterns();
1036 java_vm_->DisallowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001037 Dbg::DisallowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001038}
1039
1040void Runtime::AllowNewSystemWeaks() {
1041 monitor_list_->AllowNewMonitors();
1042 intern_table_->AllowNewInterns();
1043 java_vm_->AllowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001044 Dbg::AllowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001045}
1046
Vladimir Marko7624d252014-05-02 14:40:15 +01001047void Runtime::SetInstructionSet(InstructionSet instruction_set) {
1048 instruction_set_ = instruction_set;
1049 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) {
1050 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1051 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1052 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type);
1053 }
1054 } else if (instruction_set_ == kMips) {
1055 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1056 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1057 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type);
1058 }
1059 } else if (instruction_set_ == kX86) {
1060 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1061 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1062 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type);
1063 }
1064 } else if (instruction_set_ == kX86_64) {
1065 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1066 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1067 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type);
1068 }
1069 } else if (instruction_set_ == kArm64) {
1070 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1071 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1072 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type);
1073 }
1074 } else {
1075 UNIMPLEMENTED(FATAL) << instruction_set_;
1076 }
1077}
1078
Brian Carlstromea46f952013-07-30 01:26:50 -07001079void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001080 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
Elliott Hughes225f5a12012-06-11 11:23:48 -07001081 callee_save_methods_[type] = method;
Brian Carlstrome24fa612011-09-29 00:53:55 -07001082}
1083
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001084const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001085 if (class_loader == NULL) {
1086 return GetClassLinker()->GetBootClassPath();
1087 }
1088 CHECK(UseCompileTimeClassPath());
1089 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader);
1090 CHECK(it != compile_time_class_paths_.end());
1091 return it->second;
1092}
1093
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001094void Runtime::SetCompileTimeClassPath(jobject class_loader,
1095 std::vector<const DexFile*>& class_path) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001096 CHECK(!IsStarted());
1097 use_compile_time_class_path_ = true;
Elliott Hughesa0e18062012-04-13 15:59:59 -07001098 compile_time_class_paths_.Put(class_loader, class_path);
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001099}
1100
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001101void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) {
1102 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001103 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001104 method_verifiers_.insert(verifier);
1105}
1106
1107void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) {
1108 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001109 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001110 auto it = method_verifiers_.find(verifier);
1111 CHECK(it != method_verifiers_.end());
1112 method_verifiers_.erase(it);
1113}
1114
Calin Juravlec1b643c2014-05-30 23:44:11 +01001115void Runtime::StartProfiler(const char* profile_output_filename) {
1116 profile_output_filename_ = profile_output_filename;
1117 profiler_started_ =
1118 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_);
Dave Allison0aded082013-11-07 13:15:11 -08001119}
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001120
1121// Transaction support.
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001122void Runtime::EnterTransactionMode(Transaction* transaction) {
1123 DCHECK(IsCompiler());
1124 DCHECK(transaction != nullptr);
1125 DCHECK(!IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001126 preinitialization_transaction_ = transaction;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001127}
1128
1129void Runtime::ExitTransactionMode() {
1130 DCHECK(IsCompiler());
1131 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001132 preinitialization_transaction_ = nullptr;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001133}
1134
1135void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset,
1136 uint32_t value, bool is_volatile) const {
1137 DCHECK(IsCompiler());
1138 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001139 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001140}
1141
1142void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset,
1143 uint64_t value, bool is_volatile) const {
1144 DCHECK(IsCompiler());
1145 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001146 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001147}
1148
1149void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset,
1150 mirror::Object* value, bool is_volatile) const {
1151 DCHECK(IsCompiler());
1152 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001153 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001154}
1155
1156void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const {
1157 DCHECK(IsCompiler());
1158 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001159 preinitialization_transaction_->RecordWriteArray(array, index, value);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001160}
1161
1162void Runtime::RecordStrongStringInsertion(mirror::String* s, uint32_t hash_code) const {
1163 DCHECK(IsCompiler());
1164 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001165 preinitialization_transaction_->RecordStrongStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001166}
1167
1168void Runtime::RecordWeakStringInsertion(mirror::String* s, uint32_t hash_code) const {
1169 DCHECK(IsCompiler());
1170 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001171 preinitialization_transaction_->RecordWeakStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001172}
1173
1174void Runtime::RecordStrongStringRemoval(mirror::String* s, uint32_t hash_code) const {
1175 DCHECK(IsCompiler());
1176 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001177 preinitialization_transaction_->RecordStrongStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001178}
1179
1180void Runtime::RecordWeakStringRemoval(mirror::String* s, uint32_t hash_code) const {
1181 DCHECK(IsCompiler());
1182 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001183 preinitialization_transaction_->RecordWeakStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001184}
Mathieu Chartier15d34022014-02-26 17:16:38 -08001185
1186void Runtime::SetFaultMessage(const std::string& message) {
1187 MutexLock mu(Thread::Current(), fault_message_lock_);
1188 fault_message_ = message;
1189}
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001190
Ian Rogers8afeb852014-04-02 14:55:49 -07001191void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv)
1192 const {
Ian Rogers9bc54402014-04-17 16:40:01 -07001193 if (GetInstrumentation()->InterpretOnly()) {
1194 argv->push_back("--compiler-filter=interpret-only");
1195 }
1196
Ian Rogers8afeb852014-04-02 14:55:49 -07001197 argv->push_back("--runtime-arg");
1198 std::string checkstr = "-implicit-checks";
1199
1200 int nchecks = 0;
1201 char checksep = ':';
1202
1203 if (!ExplicitNullChecks()) {
1204 checkstr += checksep;
1205 checksep = ',';
1206 checkstr += "null";
1207 ++nchecks;
1208 }
1209 if (!ExplicitSuspendChecks()) {
1210 checkstr += checksep;
1211 checksep = ',';
1212 checkstr += "suspend";
1213 ++nchecks;
1214 }
1215
1216 if (!ExplicitStackOverflowChecks()) {
1217 checkstr += checksep;
1218 checksep = ',';
1219 checkstr += "stack";
1220 ++nchecks;
1221 }
1222
1223 if (nchecks == 0) {
1224 checkstr += ":none";
1225 }
1226 argv->push_back(checkstr);
1227
1228 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple
1229 // architecture support, dex2oat may be compiled as a different instruction-set than that
1230 // currently being executed.
Ian Rogersb9beb2e2014-05-09 16:57:40 -07001231 std::string instruction_set("--instruction-set=");
1232 instruction_set += GetInstructionSetString(kRuntimeISA);
1233 argv->push_back(instruction_set);
Ian Rogers8afeb852014-04-02 14:55:49 -07001234
1235 std::string features("--instruction-set-features=");
1236 features += GetDefaultInstructionSetFeatures();
1237 argv->push_back(features);
1238}
1239
Dave Allison39c3bfb2014-01-28 18:33:52 -08001240void Runtime::UpdateProfilerState(int state) {
Brian Carlstrom4d466a82014-05-08 19:05:29 -07001241 VLOG(profiler) << "Profiler state updated to " << state;
Dave Allison39c3bfb2014-01-28 18:33:52 -08001242}
Carl Shapiro1fb86202011-06-27 17:43:13 -07001243} // namespace art