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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>
Ian Rogersc5f17732014-06-05 20:48:42 -070021#ifdef __linux__
Brian Carlstrombd86bcc2013-03-10 20:26:16 -070022#include <linux/fs.h>
Ian Rogersc5f17732014-06-05 20:48:42 -070023#endif
Brian Carlstrombd86bcc2013-03-10 20:26:16 -070024
Brian Carlstromdbf05b72011-12-15 00:55:24 -080025#include <signal.h>
Elliott Hughesd06a6c72012-05-30 17:59:06 -070026#include <sys/syscall.h>
Mathieu Chartierda44d772014-04-01 15:01:46 -070027#include <valgrind.h>
Brian Carlstromdbf05b72011-12-15 00:55:24 -080028
Elliott Hughesffe67362011-07-17 12:09:27 -070029#include <cstdio>
30#include <cstdlib>
Brian Carlstrom8a436592011-08-15 21:27:23 -070031#include <limits>
Ian Rogers700a4022014-05-19 16:49:03 -070032#include <memory>
Carl Shapiro2ed144c2011-07-26 16:52:08 -070033#include <vector>
Dave Allison39c3bfb2014-01-28 18:33:52 -080034#include <fcntl.h>
Elliott Hughesffe67362011-07-17 12:09:27 -070035
Vladimir Marko7624d252014-05-02 14:40:15 +010036#include "arch/arm/quick_method_frame_info_arm.h"
Ian Rogers166db042013-07-26 12:05:57 -070037#include "arch/arm/registers_arm.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010038#include "arch/arm64/quick_method_frame_info_arm64.h"
Stuart Monteithb95a5342014-03-12 13:32:32 +000039#include "arch/arm64/registers_arm64.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010040#include "arch/mips/quick_method_frame_info_mips.h"
Ian Rogers166db042013-07-26 12:05:57 -070041#include "arch/mips/registers_mips.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010042#include "arch/x86/quick_method_frame_info_x86.h"
Ian Rogers166db042013-07-26 12:05:57 -070043#include "arch/x86/registers_x86.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010044#include "arch/x86_64/quick_method_frame_info_x86_64.h"
Ian Rogersef7d42f2014-01-06 12:55:46 -080045#include "arch/x86_64/registers_x86_64.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080046#include "atomic.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070047#include "class_linker.h"
Elliott Hughes3bb81562011-10-21 18:52:59 -070048#include "debugger.h"
Ian Rogers576ca0c2014-06-06 15:58:22 -070049#include "fault_handler.h"
Ian Rogers1d54e732013-05-02 21:10:01 -070050#include "gc/accounting/card_table-inl.h"
51#include "gc/heap.h"
52#include "gc/space/space.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070053#include "image.h"
jeffhao725a9572012-11-13 18:20:12 -080054#include "instrumentation.h"
Elliott Hughescf4c6c42011-09-01 15:16:42 -070055#include "intern_table.h"
Elliott Hughesc5f7c912011-08-18 14:00:42 -070056#include "jni_internal.h"
Brian Carlstromea46f952013-07-30 01:26:50 -070057#include "mirror/art_field-inl.h"
58#include "mirror/art_method-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080059#include "mirror/array.h"
Ian Rogers62d6c772013-02-27 08:32:07 -080060#include "mirror/class-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080061#include "mirror/class_loader.h"
Mathieu Chartierc528dba2013-11-26 12:00:11 -080062#include "mirror/stack_trace_element.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080063#include "mirror/throwable.h"
Elliott Hughes32d6e1e2011-10-11 14:47:44 -070064#include "monitor.h"
Brian Carlstrom491ca9e2014-03-02 18:24:38 -080065#include "parsed_options.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070066#include "oat_file.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010067#include "quick/quick_method_frame_info.h"
Ian Rogers53b8b092014-03-13 23:45:53 -070068#include "reflection.h"
Elliott Hughes726079d2011-10-07 18:43:44 -070069#include "ScopedLocalRef.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070070#include "scoped_thread_state_change.h"
Elliott Hughese27955c2011-08-26 15:21:24 -070071#include "signal_catcher.h"
Elliott Hughes457005c2012-04-16 13:54:25 -070072#include "signal_set.h"
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070073#include "handle_scope-inl.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070074#include "thread.h"
Elliott Hughes8daa0922011-09-11 13:46:25 -070075#include "thread_list.h"
jeffhaob5e81852012-03-12 11:15:45 -070076#include "trace.h"
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +010077#include "transaction.h"
Dave Allison0aded082013-11-07 13:15:11 -080078#include "profiler.h"
Ian Rogers776ac1f2012-04-13 23:36:36 -070079#include "verifier/method_verifier.h"
Elliott Hugheseac76672012-05-24 21:56:51 -070080#include "well_known_classes.h"
Carl Shapiro61e019d2011-07-14 16:53:09 -070081
Brian Carlstrom7934ac22013-07-26 10:54:15 -070082#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art.
Elliott Hughes90a33692011-08-30 13:27:07 -070083
Dave Allison39c3bfb2014-01-28 18:33:52 -080084#ifdef HAVE_ANDROID_OS
85#include "cutils/properties.h"
86#endif
87
Carl Shapiro1fb86202011-06-27 17:43:13 -070088namespace art {
89
Mathieu Chartierc751fdc2014-03-30 15:25:44 -070090static constexpr bool kEnableJavaStackTraceHandler = true;
Ian Rogers8afeb852014-04-02 14:55:49 -070091const char* Runtime::kDefaultInstructionSetFeatures =
92 STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES);
Carl Shapiro2ed144c2011-07-26 16:52:08 -070093Runtime* Runtime::instance_ = NULL;
94
Elliott Hughesdcc24742011-09-07 14:02:44 -070095Runtime::Runtime()
Ian Rogers6ed19fd2014-03-20 08:10:17 -070096 : pre_allocated_OutOfMemoryError_(nullptr),
97 resolution_method_(nullptr),
98 imt_conflict_method_(nullptr),
99 default_imt_(nullptr),
Vladimir Marko7624d252014-05-02 14:40:15 +0100100 instruction_set_(kNone),
Ian Rogers6ed19fd2014-03-20 08:10:17 -0700101 compiler_callbacks_(nullptr),
Elliott Hughesd9c67be2012-02-02 19:54:06 -0800102 is_zygote_(false),
Mathieu Chartier069387a2012-06-18 12:01:01 -0700103 is_concurrent_gc_enabled_(true),
Anwar Ghuloum87183592013-08-14 12:12:19 -0700104 is_explicit_gc_disabled_(false),
Elliott Hughes6cf23882012-06-15 15:42:07 -0700105 default_stack_size_(0),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800106 heap_(nullptr),
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700107 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800108 monitor_list_(nullptr),
109 monitor_pool_(nullptr),
110 thread_list_(nullptr),
111 intern_table_(nullptr),
112 class_linker_(nullptr),
113 signal_catcher_(nullptr),
114 java_vm_(nullptr),
Mathieu Chartier15d34022014-02-26 17:16:38 -0800115 fault_message_lock_("Fault message lock"),
116 fault_message_(""),
Ian Rogers719d1a32014-03-06 12:13:39 -0800117 method_verifier_lock_("Method verifiers lock"),
Ian Rogers120f1c72012-09-28 17:17:10 -0700118 threads_being_born_(0),
Ian Rogersc604d732012-10-14 16:09:54 -0700119 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
Elliott Hughes6b355752012-01-13 16:49:08 -0800120 shutting_down_(false),
Ian Rogers120f1c72012-09-28 17:17:10 -0700121 shutting_down_started_(false),
Elliott Hughesdcc24742011-09-07 14:02:44 -0700122 started_(false),
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700123 finished_starting_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800124 vfprintf_(nullptr),
125 exit_(nullptr),
126 abort_(nullptr),
jeffhao2692b572011-12-16 15:42:28 -0800127 stats_enabled_(false),
Mathieu Chartierda44d772014-04-01 15:01:46 -0700128 running_on_valgrind_(RUNNING_ON_VALGRIND > 0),
Calin Juravlec1b643c2014-05-30 23:44:11 +0100129 profiler_started_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800130 method_trace_(false),
Ian Rogers776ac1f2012-04-13 23:36:36 -0700131 method_trace_file_size_(0),
Ian Rogers62d6c772013-02-27 08:32:07 -0800132 instrumentation_(),
Ian Rogers365c1022012-06-22 15:05:28 -0700133 use_compile_time_class_path_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800134 main_thread_group_(nullptr),
135 system_thread_group_(nullptr),
136 system_class_loader_(nullptr),
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100137 dump_gc_performance_on_shutdown_(false),
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100138 preinitialization_transaction_(nullptr),
Dave Allisonb373e092014-02-20 16:06:36 -0800139 null_pointer_handler_(nullptr),
140 suspend_handler_(nullptr),
Jeff Hao4a200f52014-04-01 14:58:49 -0700141 stack_overflow_handler_(nullptr),
Jeff Haof00571c2014-05-29 17:29:47 -0700142 verify_(false),
143 target_sdk_version_(0) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700144 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800145 callee_save_methods_[i] = nullptr;
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700146 }
Elliott Hughesdcc24742011-09-07 14:02:44 -0700147}
148
Carl Shapiro61e019d2011-07-14 16:53:09 -0700149Runtime::~Runtime() {
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800150 if (dump_gc_performance_on_shutdown_) {
151 // This can't be called from the Heap destructor below because it
152 // could call RosAlloc::InspectAll() which needs the thread_list
153 // to be still alive.
154 heap_->DumpGcPerformanceInfo(LOG(INFO));
155 }
156
Ian Rogers120f1c72012-09-28 17:17:10 -0700157 Thread* self = Thread::Current();
158 {
159 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
160 shutting_down_started_ = true;
161 while (threads_being_born_ > 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700162 shutdown_cond_->Wait(self);
Ian Rogers120f1c72012-09-28 17:17:10 -0700163 }
164 shutting_down_ = true;
165 }
Wei Jin6a586912014-05-21 16:07:40 -0700166 // Shut down background profiler before the runtime exits.
Calin Juravlec1b643c2014-05-30 23:44:11 +0100167 if (profiler_started_) {
Wei Jin6a586912014-05-21 16:07:40 -0700168 BackgroundMethodSamplingProfiler::Shutdown();
169 }
170
Ian Rogers62d6c772013-02-27 08:32:07 -0800171 Trace::Shutdown();
jeffhaob5e81852012-03-12 11:15:45 -0700172
Mathieu Chartiera6399032012-06-11 18:49:50 -0700173 // Make sure to let the GC complete if it is running.
Mathieu Chartier89a201e2014-05-02 10:27:26 -0700174 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self);
Mathieu Chartier35883cc2012-11-13 14:08:12 -0800175 heap_->DeleteThreadPool();
Mathieu Chartiera6399032012-06-11 18:49:50 -0700176
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700177 // Make sure our internal threads are dead before we start tearing down things they're using.
Elliott Hughese52e49b2012-04-02 16:05:44 -0700178 Dbg::StopJdwp();
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700179 delete signal_catcher_;
180
Elliott Hughes038a8062011-09-18 14:12:41 -0700181 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
Elliott Hughes93e74e82011-09-13 11:07:03 -0700182 delete thread_list_;
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700183 delete monitor_list_;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800184 delete monitor_pool_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700185 delete class_linker_;
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800186 delete heap_;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700187 delete intern_table_;
Elliott Hughesc5f7c912011-08-18 14:00:42 -0700188 delete java_vm_;
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700189 Thread::Shutdown();
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700190 QuasiAtomic::Shutdown();
Sebastien Hertz4d4adb12013-07-24 16:14:19 +0200191 verifier::MethodVerifier::Shutdown();
Carl Shapiro4acf4642011-07-26 18:54:13 -0700192 // TODO: acquire a static mutex on Runtime to avoid racing.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800193 CHECK(instance_ == nullptr || instance_ == this);
194 instance_ = nullptr;
Dave Allisonb373e092014-02-20 16:06:36 -0800195
196 delete null_pointer_handler_;
197 delete suspend_handler_;
198 delete stack_overflow_handler_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700199}
200
Elliott Hughese0918552011-10-28 17:18:29 -0700201struct AbortState {
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700202 void Dump(std::ostream& os) NO_THREAD_SAFETY_ANALYSIS {
Ian Rogersf08e4732013-04-09 09:45:49 -0700203 if (gAborting > 1) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700204 os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
205 return;
206 }
Ian Rogersf08e4732013-04-09 09:45:49 -0700207 gAborting++;
Elliott Hughese0918552011-10-28 17:18:29 -0700208 os << "Runtime aborting...\n";
Elliott Hughes6c7d2442012-02-01 18:40:47 -0800209 if (Runtime::Current() == NULL) {
210 os << "(Runtime does not yet exist!)\n";
211 return;
212 }
Elliott Hughese0918552011-10-28 17:18:29 -0700213 Thread* self = Thread::Current();
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700214 if (self == nullptr) {
Elliott Hughese0918552011-10-28 17:18:29 -0700215 os << "(Aborting thread was not attached to runtime!)\n";
Ian Rogers37eecbd2014-05-11 02:08:15 -0700216 DumpKernelStack(os, GetTid(), " kernel: ", false);
217 DumpNativeStack(os, GetTid(), " native: ", nullptr);
Elliott Hughese0918552011-10-28 17:18:29 -0700218 } else {
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700219 os << "Aborting thread:\n";
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700220 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) {
221 DumpThread(os, self);
222 } else {
223 if (Locks::mutator_lock_->SharedTryLock(self)) {
224 DumpThread(os, self);
225 Locks::mutator_lock_->SharedUnlock(self);
226 }
Elliott Hughes899e7892012-01-24 14:57:32 -0800227 }
Elliott Hughese0918552011-10-28 17:18:29 -0700228 }
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700229 DumpAllThreads(os, self);
230 }
231
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700232 void DumpThread(std::ostream& os, Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
233 self->Dump(os);
234 if (self->IsExceptionPending()) {
235 ThrowLocation throw_location;
236 mirror::Throwable* exception = self->GetException(&throw_location);
237 os << "Pending exception " << PrettyTypeOf(exception)
238 << " thrown by '" << throw_location.Dump() << "'\n"
239 << exception->Dump();
240 }
241 }
242
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700243 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS {
244 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self);
245 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self);
Ian Rogersfbd22912012-10-12 14:21:10 -0700246 if (!tll_already_held || !ml_already_held) {
247 os << "Dumping all threads without appropriate locks held:"
248 << (!tll_already_held ? " thread list lock" : "")
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700249 << (!ml_already_held ? " mutator lock" : "")
250 << "\n";
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700251 }
Ian Rogersfbd22912012-10-12 14:21:10 -0700252 os << "All threads:\n";
253 Runtime::Current()->GetThreadList()->DumpLocked(os);
Elliott Hughese0918552011-10-28 17:18:29 -0700254 }
255};
256
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700257void Runtime::Abort() {
Ian Rogersf08e4732013-04-09 09:45:49 -0700258 gAborting++; // set before taking any locks
Brian Carlstrom81b88712012-11-05 19:21:30 -0800259
Elliott Hughes131aef82012-01-27 11:53:35 -0800260 // Ensure that we don't have multiple threads trying to abort at once,
261 // which would result in significantly worse diagnostics.
Ian Rogers50b35e22012-10-04 10:09:15 -0700262 MutexLock mu(Thread::Current(), *Locks::abort_lock_);
Elliott Hughes131aef82012-01-27 11:53:35 -0800263
Elliott Hughesffe67362011-07-17 12:09:27 -0700264 // Get any pending output out of the way.
265 fflush(NULL);
266
267 // Many people have difficulty distinguish aborts from crashes,
268 // so be explicit.
Elliott Hughese0918552011-10-28 17:18:29 -0700269 AbortState state;
Elliott Hughes9ee5f9c2012-02-03 18:33:16 -0800270 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
Elliott Hughesffe67362011-07-17 12:09:27 -0700271
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700272 // Call the abort hook if we have one.
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700273 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700274 LOG(INTERNAL_FATAL) << "Calling abort hook...";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700275 Runtime::Current()->abort_();
276 // notreached
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700277 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700278 }
279
Elliott Hughesdd623db2013-06-11 11:20:23 -0700280#if defined(__GLIBC__)
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700281 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3),
282 // which POSIX defines in terms of raise(3), which POSIX defines in terms
283 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through
284 // libpthread, which means the stacks we dump would be useless. Calling
285 // tgkill(2) directly avoids that.
286 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700287 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM?
288 // 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 -0800289 exit(1);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700290#else
291 abort();
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700292#endif
Elliott Hughesffe67362011-07-17 12:09:27 -0700293 // notreached
294}
295
Narayan Kamath3de95a72014-04-02 12:54:23 +0100296void Runtime::PreZygoteFork() {
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700297 heap_->PreZygoteFork();
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700298}
299
Elliott Hughesbf86d042011-08-31 17:53:14 -0700300void Runtime::CallExitHook(jint status) {
301 if (exit_ != NULL) {
Elliott Hughes34e06962012-04-09 13:55:55 -0700302 ScopedThreadStateChange tsc(Thread::Current(), kNative);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700303 exit_(status);
304 LOG(WARNING) << "Exit hook returned instead of exiting!";
305 }
306}
307
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800308void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) {
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700309 GetInternTable()->SweepInternTableWeaks(visitor, arg);
310 GetMonitorList()->SweepMonitorList(visitor, arg);
311 GetJavaVM()->SweepJniWeakGlobals(visitor, arg);
Mathieu Chartier412c7fc2014-02-07 12:18:39 -0800312 Dbg::UpdateObjectPointers(visitor, arg);
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700313}
314
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700315bool Runtime::Create(const Options& options, bool ignore_unrecognized) {
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700316 // TODO: acquire a static mutex on Runtime to avoid racing.
317 if (Runtime::instance_ != NULL) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700318 return false;
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700319 }
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700320 InitLogging(NULL); // Calls Locks::Init() as a side effect.
Elliott Hughesdcc24742011-09-07 14:02:44 -0700321 instance_ = new Runtime;
322 if (!instance_->Init(options, ignore_unrecognized)) {
323 delete instance_;
324 instance_ = NULL;
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700325 return false;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700326 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700327 return true;
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700328}
Elliott Hughes0af55432011-08-17 18:37:28 -0700329
Brian Carlstromce888532013-10-10 00:32:58 -0700330jobject CreateSystemClassLoader() {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800331 if (Runtime::Current()->UseCompileTimeClassPath()) {
Brian Carlstromce888532013-10-10 00:32:58 -0700332 return NULL;
Brian Carlstromaded5f72011-10-07 17:15:04 -0700333 }
334
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700335 ScopedObjectAccess soa(Thread::Current());
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800336 ClassLinker* cl = Runtime::Current()->GetClassLinker();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700337
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700338 StackHandleScope<3> hs(soa.Self());
339 Handle<mirror::Class> class_loader_class(
340 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader)));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800341 CHECK(cl->EnsureInitialized(class_loader_class, true, true));
Brian Carlstromaded5f72011-10-07 17:15:04 -0700342
Brian Carlstromea46f952013-07-30 01:26:50 -0700343 mirror::ArtMethod* getSystemClassLoader =
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800344 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
Brian Carlstromdf143242011-10-10 18:05:34 -0700345 CHECK(getSystemClassLoader != NULL);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700346
Ian Rogers53b8b092014-03-13 23:45:53 -0700347 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700348 Handle<mirror::ClassLoader> class_loader(
349 hs.NewHandle(down_cast<mirror::ClassLoader*>(result.GetL())));
350 CHECK(class_loader.Get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700351 JNIEnv* env = soa.Self()->GetJniEnv();
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800352 ScopedLocalRef<jobject> system_class_loader(env,
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700353 soa.AddLocalReference<jobject>(class_loader.Get()));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800354 CHECK(system_class_loader.get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700355
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700356 soa.Self()->SetClassLoaderOverride(class_loader.Get());
Ian Rogers365c1022012-06-22 15:05:28 -0700357
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700358 Handle<mirror::Class> thread_class(
359 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread)));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800360 CHECK(cl->EnsureInitialized(thread_class, true, true));
Ian Rogers365c1022012-06-22 15:05:28 -0700361
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800362 mirror::ArtField* contextClassLoader =
363 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;");
Jesse Wilson1b2b2f22011-11-22 11:47:44 -0500364 CHECK(contextClassLoader != NULL);
Ian Rogers365c1022012-06-22 15:05:28 -0700365
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100366 // We can't run in a transaction yet.
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700367 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.Get());
Brian Carlstromce888532013-10-10 00:32:58 -0700368
369 return env->NewGlobalRef(system_class_loader.get());
Brian Carlstromaded5f72011-10-07 17:15:04 -0700370}
371
Tsu Chiang Chuang12e6d742014-05-22 10:22:25 -0700372std::string Runtime::GetCompilerExecutable() const {
373 if (!compiler_executable_.empty()) {
374 return compiler_executable_;
375 }
376 std::string compiler_executable(GetAndroidRoot());
377 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat");
378 return compiler_executable;
379}
380
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700381bool Runtime::Start() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800382 VLOG(startup) << "Runtime::Start entering";
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700383
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700384 // Restore main thread state to kNative as expected by native code.
Ian Rogersa436fde2013-08-27 23:34:06 -0700385 Thread* self = Thread::Current();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700386 self->TransitionFromRunnableToSuspended(kNative);
387
Brian Carlstrom5d40f182011-09-26 22:29:18 -0700388 started_ = true;
389
Brian Carlstromae826982011-11-09 01:33:42 -0800390 // InitNativeMethods needs to be after started_ so that the classes
391 // it touches will have methods linked to the oat file if necessary.
392 InitNativeMethods();
393
Ian Rogers365c1022012-06-22 15:05:28 -0700394 // Initialize well known thread group values that may be accessed threads while attaching.
395 InitThreadGroups(self);
396
Jesse Wilson9a6bae82011-11-14 14:57:30 -0500397 Thread::FinishStartup();
398
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700399 if (is_zygote_) {
400 if (!InitZygote()) {
401 return false;
402 }
403 } else {
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700404 DidForkFromZygote();
405 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700406
Elliott Hughes85d15452011-09-16 17:33:01 -0700407 StartDaemonThreads();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700408
Brian Carlstromce888532013-10-10 00:32:58 -0700409 system_class_loader_ = CreateSystemClassLoader();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700410
Yevgeny Rouban35aef2c2014-05-19 16:19:36 +0700411 {
412 ScopedObjectAccess soa(self);
413 self->GetJniEnv()->locals.AssertEmpty();
414 }
Elliott Hughes726079d2011-10-07 18:43:44 -0700415
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800416 VLOG(startup) << "Runtime::Start exiting";
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700417 finished_starting_ = true;
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700418
Calin Juravlec1b643c2014-05-30 23:44:11 +0100419 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) {
420 // User has asked for a profile using -Xenable-profiler.
Dave Allison39c3bfb2014-01-28 18:33:52 -0800421 // Create the profile file if it doesn't exist.
422 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660);
423 if (fd >= 0) {
424 close(fd);
425 }
Calin Juravlec1b643c2014-05-30 23:44:11 +0100426 StartProfiler(profile_output_filename_.c_str());
Dave Allison0aded082013-11-07 13:15:11 -0800427 }
428
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700429 return true;
Elliott Hughes85d15452011-09-16 17:33:01 -0700430}
431
Ian Rogers120f1c72012-09-28 17:17:10 -0700432void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) {
433 DCHECK_GT(threads_being_born_, 0U);
434 threads_being_born_--;
435 if (shutting_down_started_ && threads_being_born_ == 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700436 shutdown_cond_->Broadcast(Thread::Current());
Ian Rogers120f1c72012-09-28 17:17:10 -0700437 }
438}
439
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700440// Do zygote-mode-only initialization.
441bool Runtime::InitZygote() {
Ian Rogersc5f17732014-06-05 20:48:42 -0700442#ifdef __linux__
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700443 // zygote goes into its own process group
Brian Carlstromb1eba212013-07-17 18:07:19 -0700444 setpgid(0, 0);
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700445
446 // See storage config details at http://source.android.com/tech/storage/
447 // Create private mount namespace shared by all children
448 if (unshare(CLONE_NEWNS) == -1) {
449 PLOG(WARNING) << "Failed to unshare()";
450 return false;
451 }
452
453 // Mark rootfs as being a slave so that changes from default
454 // namespace only flow into our children.
455 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) {
456 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE";
457 return false;
458 }
459
460 // Create a staging tmpfs that is shared by our children; they will
461 // bind mount storage into their respective private namespaces, which
462 // are isolated from each other.
463 const char* target_base = getenv("EMULATED_STORAGE_TARGET");
464 if (target_base != NULL) {
465 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV,
Jeff Sharkey52cd1e82013-09-17 16:25:12 -0700466 "uid=0,gid=1028,mode=0751") == -1) {
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700467 LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
468 return false;
469 }
470 }
471
472 return true;
Ian Rogersc5f17732014-06-05 20:48:42 -0700473#else
474 UNIMPLEMENTED(FATAL);
475 return false;
476#endif
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700477}
478
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700479void Runtime::DidForkFromZygote() {
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700480 is_zygote_ = false;
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700481
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700482 // Create the thread pool.
483 heap_->CreateThreadPool();
484
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700485 StartSignalCatcher();
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700486
487 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y",
488 // this will pause the runtime, so we probably want this to come last.
489 Dbg::StartJdwp();
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700490}
491
492void Runtime::StartSignalCatcher() {
493 if (!is_zygote_) {
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700494 signal_catcher_ = new SignalCatcher(stack_trace_file_);
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700495 }
496}
497
Mathieu Chartier590fee92013-09-13 13:46:47 -0700498bool Runtime::IsShuttingDown(Thread* self) {
499 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
500 return IsShuttingDownLocked();
501}
502
Elliott Hughes85d15452011-09-16 17:33:01 -0700503void Runtime::StartDaemonThreads() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800504 VLOG(startup) << "Runtime::StartDaemonThreads entering";
Elliott Hughes85d15452011-09-16 17:33:01 -0700505
Elliott Hughes719b3232011-09-25 17:42:19 -0700506 Thread* self = Thread::Current();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700507
508 // Must be in the kNative state for calling native methods.
Ian Rogers50b35e22012-10-04 10:09:15 -0700509 CHECK_EQ(self->GetState(), kNative);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700510
Elliott Hughes719b3232011-09-25 17:42:19 -0700511 JNIEnv* env = self->GetJniEnv();
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700512 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons,
513 WellKnownClasses::java_lang_Daemons_start);
514 if (env->ExceptionCheck()) {
515 env->ExceptionDescribe();
516 LOG(FATAL) << "Error starting java.lang.Daemons";
517 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700518
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800519 VLOG(startup) << "Runtime::StartDaemonThreads exiting";
Carl Shapiro61e019d2011-07-14 16:53:09 -0700520}
521
Elliott Hughes0af55432011-08-17 18:37:28 -0700522bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) {
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700523 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700524
Ian Rogers700a4022014-05-19 16:49:03 -0700525 std::unique_ptr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
Elliott Hughes90a33692011-08-30 13:27:07 -0700526 if (options.get() == NULL) {
Brian Carlstrome24fa612011-09-29 00:53:55 -0700527 LOG(ERROR) << "Failed to parse options";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700528 return false;
529 }
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800530 VLOG(startup) << "Runtime::Init -verbose:startup enabled";
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700531
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700532 QuasiAtomic::Startup();
533
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800534 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
Elliott Hughes32d6e1e2011-10-11 14:47:44 -0700535
Brian Carlstroma004aa92012-02-08 18:05:09 -0800536 boot_class_path_string_ = options->boot_class_path_string_;
537 class_path_string_ = options->class_path_string_;
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700538 properties_ = options->properties_;
539
Vladimir Marko2b5eaa22013-12-13 13:59:30 +0000540 compiler_callbacks_ = options->compiler_callbacks_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700541 is_zygote_ = options->is_zygote_;
Anwar Ghuloum87183592013-08-14 12:12:19 -0700542 is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700543
Elliott Hughes0af55432011-08-17 18:37:28 -0700544 vfprintf_ = options->hook_vfprintf_;
545 exit_ = options->hook_exit_;
546 abort_ = options->hook_abort_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700547
Elliott Hughesbe759c62011-09-08 19:38:21 -0700548 default_stack_size_ = options->stack_size_;
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700549 stack_trace_file_ = options->stack_trace_file_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700550
Tsu Chiang Chuang12e6d742014-05-22 10:22:25 -0700551 compiler_executable_ = options->compiler_executable_;
Brian Carlstrom2ec65202014-03-03 15:16:37 -0800552 compiler_options_ = options->compiler_options_;
553 image_compiler_options_ = options->image_compiler_options_;
554
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700555 max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_;
556
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700557 monitor_list_ = new MonitorList;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800558 monitor_pool_ = MonitorPool::Create();
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800559 thread_list_ = new ThreadList;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700560 intern_table_ = new InternTable;
561
Jeff Hao4a200f52014-04-01 14:58:49 -0700562 verify_ = options->verify_;
Logan Chiendd361c92012-04-10 23:40:37 +0800563
Ian Rogers62d6c772013-02-27 08:32:07 -0800564 if (options->interpreter_only_) {
565 GetInstrumentation()->ForceInterpretOnly();
566 }
567
Dave Allisonf4b80bc2014-05-14 15:41:25 -0700568 bool implicit_checks_supported = false;
569 switch (kRuntimeISA) {
570 case kArm:
571 case kThumb2:
572 implicit_checks_supported = true;
573 break;
574 default:
575 break;
576 }
577
578 if (implicit_checks_supported &&
579 (options->explicit_checks_ != (ParsedOptions::kExplicitSuspendCheck |
580 ParsedOptions::kExplicitNullCheck |
581 ParsedOptions::kExplicitStackOverflowCheck) || kEnableJavaStackTraceHandler)) {
Dave Allisonb373e092014-02-20 16:06:36 -0800582 fault_manager.Init();
583
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700584 // These need to be in a specific order. The null point check handler must be
585 // after the suspend check and stack overflow check handlers.
Dave Allisonb373e092014-02-20 16:06:36 -0800586 if ((options->explicit_checks_ & ParsedOptions::kExplicitSuspendCheck) == 0) {
587 suspend_handler_ = new SuspensionHandler(&fault_manager);
588 }
589
590 if ((options->explicit_checks_ & ParsedOptions::kExplicitStackOverflowCheck) == 0) {
591 stack_overflow_handler_ = new StackOverflowHandler(&fault_manager);
592 }
593
594 if ((options->explicit_checks_ & ParsedOptions::kExplicitNullCheck) == 0) {
595 null_pointer_handler_ = new NullPointerHandler(&fault_manager);
596 }
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700597
598 if (kEnableJavaStackTraceHandler) {
599 new JavaStackTraceHandler(&fault_manager);
600 }
Dave Allisonb373e092014-02-20 16:06:36 -0800601 }
602
Ian Rogers1d54e732013-05-02 21:10:01 -0700603 heap_ = new gc::Heap(options->heap_initial_size_,
604 options->heap_growth_limit_,
605 options->heap_min_free_,
606 options->heap_max_free_,
607 options->heap_target_utilization_,
Mathieu Chartier2f8da3e2014-04-15 15:37:02 -0700608 options->foreground_heap_growth_multiplier_,
Ian Rogers1d54e732013-05-02 21:10:01 -0700609 options->heap_maximum_size_,
610 options->image_,
Narayan Kamath11d9f062014-04-23 20:24:57 +0100611 options->image_isa_,
Mathieu Chartier0de9f732013-11-22 17:58:48 -0800612 options->collector_type_,
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800613 options->background_collector_type_,
Mathieu Chartier2775ee42013-08-20 17:43:47 -0700614 options->parallel_gc_threads_,
615 options->conc_gc_threads_,
616 options->low_memory_mode_,
617 options->long_pause_log_threshold_,
618 options->long_gc_log_threshold_,
Mathieu Chartier692fafd2013-11-29 17:24:40 -0800619 options->ignore_max_footprint_,
Mathieu Chartier938a03b2014-01-16 15:10:31 -0800620 options->use_tlab_,
621 options->verify_pre_gc_heap_,
Mathieu Chartier6f365cc2014-04-23 12:42:27 -0700622 options->verify_pre_sweeping_heap_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800623 options->verify_post_gc_heap_,
624 options->verify_pre_gc_rosalloc_,
Mathieu Chartier6f365cc2014-04-23 12:42:27 -0700625 options->verify_pre_sweeping_rosalloc_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800626 options->verify_post_gc_rosalloc_);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700627
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800628 dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_;
629
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700630 BlockSignals();
Elliott Hughes457005c2012-04-16 13:54:25 -0700631 InitPlatformSignalHandlers();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700632
Elliott Hughesa0957642011-09-02 14:27:33 -0700633 java_vm_ = new JavaVMExt(this, options.get());
Elliott Hughes515a5bc2011-08-17 11:08:34 -0700634
Elliott Hughesbe759c62011-09-08 19:38:21 -0700635 Thread::Startup();
Elliott Hughesd92bec42011-09-02 17:04:36 -0700636
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800637 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating
638 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main
639 // thread, we do not get a java peer.
640 Thread* self = Thread::Attach("main", false, NULL, false);
Ian Rogersdd7624d2014-03-14 17:43:00 -0700641 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId);
Ian Rogers120f1c72012-09-28 17:17:10 -0700642 CHECK(self != NULL);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700643
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700644 // Set us to runnable so tools using a runtime can allocate and GC by default
Ian Rogers120f1c72012-09-28 17:17:10 -0700645 self->TransitionFromSuspendedToRunnable();
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700646
Ian Rogersa436fde2013-08-27 23:34:06 -0700647 // Now we're attached, we can take the heap locks and validate the heap.
Ian Rogers141d6222012-04-05 12:23:06 -0700648 GetHeap()->EnableObjectValidation();
649
Ian Rogers1d54e732013-05-02 21:10:01 -0700650 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700651 class_linker_ = new ClassLinker(intern_table_);
652 if (GetHeap()->HasImageSpace()) {
653 class_linker_->InitFromImage();
Hiroshi Yamauchibd0fb612014-05-20 13:46:00 -0700654 if (kIsDebugBuild) {
655 GetHeap()->GetImageSpace()->VerifyImageAllocations();
656 }
Brian Carlstroma004aa92012-02-08 18:05:09 -0800657 } else {
658 CHECK(options->boot_class_path_ != NULL);
659 CHECK_NE(options->boot_class_path_->size(), 0U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700660 class_linker_->InitFromCompiler(*options->boot_class_path_);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800661 }
662 CHECK(class_linker_ != NULL);
Sameer Abu Asal51a5fb72013-02-19 14:25:01 -0800663 verifier::MethodVerifier::Init();
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700664
jeffhaob5e81852012-03-12 11:15:45 -0700665 method_trace_ = options->method_trace_;
666 method_trace_file_ = options->method_trace_file_;
667 method_trace_file_size_ = options->method_trace_file_size_;
668
Dave Allison0aded082013-11-07 13:15:11 -0800669 profile_output_filename_ = options->profile_output_filename_;
Calin Juravlec1b643c2014-05-30 23:44:11 +0100670 profiler_options_ = options->profiler_options_;
671
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800672 // TODO: move this to just be an Trace::Start argument
673 Trace::SetDefaultClockSource(options->profile_clock_source_);
Dave Allison0aded082013-11-07 13:15:11 -0800674
jeffhaob5e81852012-03-12 11:15:45 -0700675 if (options->method_trace_) {
Jeff Hao23009dc2013-08-22 15:36:42 -0700676 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0,
677 false, false, 0);
jeffhaob5e81852012-03-12 11:15:45 -0700678 }
679
Ian Rogersa436fde2013-08-27 23:34:06 -0700680 // Pre-allocate an OutOfMemoryError for the double-OOME case.
681 self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;",
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800682 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; "
683 "no stack available");
Ian Rogersa436fde2013-08-27 23:34:06 -0700684 pre_allocated_OutOfMemoryError_ = self->GetException(NULL);
685 self->ClearException();
686
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800687 VLOG(startup) << "Runtime::Init exiting";
Carl Shapiro1fb86202011-06-27 17:43:13 -0700688 return true;
689}
690
Elliott Hughes038a8062011-09-18 14:12:41 -0700691void Runtime::InitNativeMethods() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800692 VLOG(startup) << "Runtime::InitNativeMethods entering";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700693 Thread* self = Thread::Current();
694 JNIEnv* env = self->GetJniEnv();
695
Elliott Hughes418d20f2011-09-22 14:00:39 -0700696 // Must be in the kNative state for calling native methods (JNI_OnLoad code).
Ian Rogers50b35e22012-10-04 10:09:15 -0700697 CHECK_EQ(self->GetState(), kNative);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700698
Elliott Hughes418d20f2011-09-22 14:00:39 -0700699 // First set up JniConstants, which is used by both the runtime's built-in native
700 // methods and libcore.
Elliott Hughesfea966e2011-09-22 10:26:20 -0700701 JniConstants::init(env);
Elliott Hugheseac76672012-05-24 21:56:51 -0700702 WellKnownClasses::Init(env);
Elliott Hughesfea966e2011-09-22 10:26:20 -0700703
Elliott Hughes418d20f2011-09-22 14:00:39 -0700704 // Then set up the native methods provided by the runtime itself.
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700705 RegisterRuntimeNativeMethods(env);
706
Elliott Hughes418d20f2011-09-22 14:00:39 -0700707 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad.
708 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's
709 // the library that implements System.loadLibrary!
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700710 {
711 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
712 std::string reason;
713 self->TransitionFromSuspendedToRunnable();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700714 StackHandleScope<1> hs(self);
715 auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr));
Mathieu Chartier055d46c2014-02-06 11:22:17 -0800716 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700717 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
718 }
719 self->TransitionFromRunnableToSuspended(kNative);
720 }
Ian Rogersef28b142012-11-30 14:22:18 -0800721
722 // Initialize well known classes that may invoke runtime native methods.
723 WellKnownClasses::LateInit(env);
724
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800725 VLOG(startup) << "Runtime::InitNativeMethods exiting";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700726}
727
Ian Rogers365c1022012-06-22 15:05:28 -0700728void Runtime::InitThreadGroups(Thread* self) {
729 JNIEnvExt* env = self->GetJniEnv();
730 ScopedJniEnvLocalRefState env_state(env);
731 main_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800732 env->NewGlobalRef(env->GetStaticObjectField(
733 WellKnownClasses::java_lang_ThreadGroup,
734 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700735 CHECK(main_thread_group_ != NULL || IsCompiler());
Ian Rogers365c1022012-06-22 15:05:28 -0700736 system_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800737 env->NewGlobalRef(env->GetStaticObjectField(
738 WellKnownClasses::java_lang_ThreadGroup,
739 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700740 CHECK(system_thread_group_ != NULL || IsCompiler());
741}
742
743jobject Runtime::GetMainThreadGroup() const {
744 CHECK(main_thread_group_ != NULL || IsCompiler());
745 return main_thread_group_;
746}
747
748jobject Runtime::GetSystemThreadGroup() const {
749 CHECK(system_thread_group_ != NULL || IsCompiler());
750 return system_thread_group_;
Ian Rogers365c1022012-06-22 15:05:28 -0700751}
752
Brian Carlstromce888532013-10-10 00:32:58 -0700753jobject Runtime::GetSystemClassLoader() const {
754 CHECK(system_class_loader_ != NULL || IsCompiler());
755 return system_class_loader_;
756}
757
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700758void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
759#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
Ian Rogers5167c972012-02-03 10:41:20 -0800760 // Register Throwable first so that registration of other native methods can throw exceptions
761 REGISTER(register_java_lang_Throwable);
Brian Carlstromf91c8c32011-09-21 17:30:34 -0700762 REGISTER(register_dalvik_system_DexFile);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700763 REGISTER(register_dalvik_system_VMDebug);
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700764 REGISTER(register_dalvik_system_VMRuntime);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700765 REGISTER(register_dalvik_system_VMStack);
Narayan Kamath8b2c8b92014-03-31 16:44:54 +0100766 REGISTER(register_dalvik_system_ZygoteHooks);
Elliott Hughesd369bb72011-09-12 14:41:14 -0700767 REGISTER(register_java_lang_Class);
Ian Rogers8b2c0b92013-09-19 02:56:49 -0700768 REGISTER(register_java_lang_DexCache);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700769 REGISTER(register_java_lang_Object);
770 REGISTER(register_java_lang_Runtime);
771 REGISTER(register_java_lang_String);
772 REGISTER(register_java_lang_System);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700773 REGISTER(register_java_lang_Thread);
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700774 REGISTER(register_java_lang_VMClassLoader);
Mathieu Chartier78f7b4c2014-05-06 10:57:27 -0700775 REGISTER(register_java_lang_ref_Reference);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700776 REGISTER(register_java_lang_reflect_Array);
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700777 REGISTER(register_java_lang_reflect_Constructor);
Brian Carlstromf867b6f2011-09-16 12:17:25 -0700778 REGISTER(register_java_lang_reflect_Field);
779 REGISTER(register_java_lang_reflect_Method);
Jesse Wilson95caa792011-10-12 18:14:17 -0400780 REGISTER(register_java_lang_reflect_Proxy);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700781 REGISTER(register_java_util_concurrent_atomic_AtomicLong);
Brian Carlstrom395520e2011-09-25 19:35:00 -0700782 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
Elliott Hughesf6a1e1e2011-10-25 16:28:04 -0700783 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
Elliott Hughes5ee7a8b2011-09-13 16:40:07 -0700784 REGISTER(register_sun_misc_Unsafe);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700785#undef REGISTER
786}
787
Elliott Hughesc967f782012-04-16 10:23:15 -0700788void Runtime::DumpForSigQuit(std::ostream& os) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700789 GetClassLinker()->DumpForSigQuit(os);
790 GetInternTable()->DumpForSigQuit(os);
Elliott Hughesae80b492012-04-24 10:43:17 -0700791 GetJavaVM()->DumpForSigQuit(os);
Elliott Hughesc967f782012-04-16 10:23:15 -0700792 GetHeap()->DumpForSigQuit(os);
Elliott Hughes42ee1422011-09-06 12:33:32 -0700793 os << "\n";
Elliott Hughes8daa0922011-09-11 13:46:25 -0700794
Elliott Hughesc967f782012-04-16 10:23:15 -0700795 thread_list_->DumpForSigQuit(os);
Ian Rogers56edc432013-01-18 16:51:51 -0800796 BaseMutex::DumpAll(os);
Elliott Hughese27955c2011-08-26 15:21:24 -0700797}
798
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800799void Runtime::DumpLockHolders(std::ostream& os) {
Ian Rogersb726dcb2012-09-05 08:57:23 -0700800 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800801 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
802 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
803 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700804 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
805 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800806 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n"
807 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n"
808 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n";
809 }
810}
811
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700812void Runtime::SetStatsEnabled(bool new_state) {
813 if (new_state == true) {
814 GetStats()->Clear(~0);
815 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
816 Thread::Current()->GetStats()->Clear(~0);
Ian Rogersfa824272013-11-05 16:12:57 -0800817 GetInstrumentation()->InstrumentQuickAllocEntryPoints();
Hiroshi Yamauchi3b4c1892013-09-12 21:33:12 -0700818 } else {
Ian Rogersfa824272013-11-05 16:12:57 -0800819 GetInstrumentation()->UninstrumentQuickAllocEntryPoints();
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700820 }
821 stats_enabled_ = new_state;
822}
823
824void Runtime::ResetStats(int kinds) {
825 GetStats()->Clear(kinds & 0xffff);
826 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
827 Thread::Current()->GetStats()->Clear(kinds >> 16);
828}
829
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700830int32_t Runtime::GetStat(int kind) {
831 RuntimeStats* stats;
832 if (kind < (1<<16)) {
833 stats = GetStats();
834 } else {
835 stats = Thread::Current()->GetStats();
836 kind >>= 16;
837 }
838 switch (kind) {
839 case KIND_ALLOCATED_OBJECTS:
840 return stats->allocated_objects;
841 case KIND_ALLOCATED_BYTES:
842 return stats->allocated_bytes;
843 case KIND_FREED_OBJECTS:
844 return stats->freed_objects;
845 case KIND_FREED_BYTES:
846 return stats->freed_bytes;
847 case KIND_GC_INVOCATIONS:
848 return stats->gc_for_alloc_count;
849 case KIND_CLASS_INIT_COUNT:
850 return stats->class_init_count;
851 case KIND_CLASS_INIT_TIME:
852 // Convert ns to us, reduce to 32 bits.
Elliott Hughes398f64b2012-03-26 18:05:48 -0700853 return static_cast<int>(stats->class_init_time_ns / 1000);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700854 case KIND_EXT_ALLOCATED_OBJECTS:
855 case KIND_EXT_ALLOCATED_BYTES:
856 case KIND_EXT_FREED_OBJECTS:
857 case KIND_EXT_FREED_BYTES:
858 return 0; // backward compatibility
859 default:
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700860 LOG(FATAL) << "Unknown statistic " << kind;
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700861 return -1; // unreachable
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700862 }
863}
864
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700865void Runtime::BlockSignals() {
Elliott Hughes457005c2012-04-16 13:54:25 -0700866 SignalSet signals;
867 signals.Add(SIGPIPE);
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700868 // SIGQUIT is used to dump the runtime's state (including stack traces).
Elliott Hughes457005c2012-04-16 13:54:25 -0700869 signals.Add(SIGQUIT);
Elliott Hughes08795042012-04-03 14:48:52 -0700870 // SIGUSR1 is used to initiate a GC.
Elliott Hughes457005c2012-04-16 13:54:25 -0700871 signals.Add(SIGUSR1);
872 signals.Block();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700873}
874
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800875bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group,
876 bool create_peer) {
877 bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL;
Elliott Hughes22869a92012-03-27 14:08:24 -0700878 if (thread_name == NULL) {
879 LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
880 }
Ian Rogers120f1c72012-09-28 17:17:10 -0700881 return success;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700882}
883
Elliott Hughesd92bec42011-09-02 17:04:36 -0700884void Runtime::DetachCurrentThread() {
Brian Carlstrom4d571432012-05-16 00:21:41 -0700885 Thread* self = Thread::Current();
886 if (self == NULL) {
887 LOG(FATAL) << "attempting to detach thread that is not attached";
888 }
Ian Rogers0399dde2012-06-06 17:09:28 -0700889 if (self->HasManagedStack()) {
Elliott Hughes22869a92012-03-27 14:08:24 -0700890 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
891 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700892 thread_list_->Unregister(self);
Carl Shapiro1fb86202011-06-27 17:43:13 -0700893}
894
Ian Rogersa436fde2013-08-27 23:34:06 -0700895 mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() const {
896 if (pre_allocated_OutOfMemoryError_ == NULL) {
897 LOG(ERROR) << "Failed to return pre-allocated OOME";
898 }
899 return pre_allocated_OutOfMemoryError_;
900}
901
Mathieu Chartier893263b2014-03-04 11:07:42 -0800902void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) {
903 // Visit the classes held as static in mirror classes, these can be visited concurrently and only
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700904 // need to be visited once per GC since they never change.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800905 mirror::ArtField::VisitRoots(callback, arg);
906 mirror::ArtMethod::VisitRoots(callback, arg);
907 mirror::Class::VisitRoots(callback, arg);
908 mirror::StackTraceElement::VisitRoots(callback, arg);
909 mirror::String::VisitRoots(callback, arg);
910 mirror::Throwable::VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800911 // Visit all the primitive array types classes.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800912 mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg); // BooleanArray
913 mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg); // ByteArray
914 mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg); // CharArray
915 mirror::PrimitiveArray<double>::VisitRoots(callback, arg); // DoubleArray
916 mirror::PrimitiveArray<float>::VisitRoots(callback, arg); // FloatArray
917 mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg); // IntArray
918 mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg); // LongArray
919 mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg); // ShortArray
Mathieu Chartier893263b2014-03-04 11:07:42 -0800920}
921
922void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
923 intern_table_->VisitRoots(callback, arg, flags);
924 class_linker_->VisitRoots(callback, arg, flags);
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700925 Dbg::VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800926 if ((flags & kVisitRootFlagNewRoots) == 0) {
927 // Guaranteed to have no new roots in the constant roots.
928 VisitConstantRoots(callback, arg);
929 }
930}
931
932void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800933 java_vm_->VisitRoots(callback, arg);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700934 if (pre_allocated_OutOfMemoryError_ != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800935 callback(reinterpret_cast<mirror::Object**>(&pre_allocated_OutOfMemoryError_), arg, 0,
936 kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700937 DCHECK(pre_allocated_OutOfMemoryError_ != nullptr);
Elliott Hughes225f5a12012-06-11 11:23:48 -0700938 }
Mathieu Chartier815873e2014-02-13 18:02:13 -0800939 callback(reinterpret_cast<mirror::Object**>(&resolution_method_), arg, 0, kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700940 DCHECK(resolution_method_ != nullptr);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700941 if (HasImtConflictMethod()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800942 callback(reinterpret_cast<mirror::Object**>(&imt_conflict_method_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700943 }
944 if (HasDefaultImt()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800945 callback(reinterpret_cast<mirror::Object**>(&default_imt_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700946 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700947 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Mathieu Chartier590fee92013-09-13 13:46:47 -0700948 if (callee_save_methods_[i] != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800949 callback(reinterpret_cast<mirror::Object**>(&callee_save_methods_[i]), arg, 0,
950 kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700951 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700952 }
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800953 {
Ian Rogers719d1a32014-03-06 12:13:39 -0800954 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800955 for (verifier::MethodVerifier* verifier : method_verifiers_) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800956 verifier->VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800957 }
958 }
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100959 if (preinitialization_transaction_ != nullptr) {
960 preinitialization_transaction_->VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800961 }
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700962 instrumentation_.VisitRoots(callback, arg);
Brian Carlstrome24fa612011-09-29 00:53:55 -0700963}
964
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800965void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) {
966 thread_list_->VisitRoots(callback, arg);
967 VisitNonThreadRoots(callback, arg);
Mathieu Chartier858f1c52012-10-17 17:45:55 -0700968}
969
Mathieu Chartier893263b2014-03-04 11:07:42 -0800970void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800971 VisitNonConcurrentRoots(callback, arg);
Mathieu Chartier119c6bd2014-05-09 14:11:47 -0700972 VisitConcurrentRoots(callback, arg, flags);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -0700973}
974
Jeff Hao88474b42013-10-23 16:24:40 -0700975mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) {
976 Thread* self = Thread::Current();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700977 StackHandleScope<1> hs(self);
978 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable(
979 hs.NewHandle(cl->AllocArtMethodArray(self, 64)));
Jeff Hao88474b42013-10-23 16:24:40 -0700980 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod();
Mathieu Chartier590fee92013-09-13 13:46:47 -0700981 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) {
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100982 imtable->Set<false>(i, imt_conflict_method);
Jeff Hao88474b42013-10-23 16:24:40 -0700983 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700984 return imtable.Get();
Jeff Hao88474b42013-10-23 16:24:40 -0700985}
986
987mirror::ArtMethod* Runtime::CreateImtConflictMethod() {
Jeff Hao88474b42013-10-23 16:24:40 -0700988 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -0800989 Runtime* runtime = Runtime::Current();
990 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700991 StackHandleScope<1> hs(self);
992 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -0700993 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogersef7d42f2014-01-06 12:55:46 -0800994 // TODO: use a special method for imt conflict method saves.
Jeff Hao88474b42013-10-23 16:24:40 -0700995 method->SetDexMethodIndex(DexFile::kDexNoIndex);
996 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800997 if (runtime->IsCompiler()) {
998 method->SetEntryPointFromPortableCompiledCode(nullptr);
999 method->SetEntryPointFromQuickCompiledCode(nullptr);
1000 } else {
1001 method->SetEntryPointFromPortableCompiledCode(GetPortableImtConflictTrampoline(class_linker));
1002 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictTrampoline(class_linker));
1003 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001004 return method.Get();
Jeff Hao88474b42013-10-23 16:24:40 -07001005}
1006
Brian Carlstromea46f952013-07-30 01:26:50 -07001007mirror::ArtMethod* Runtime::CreateResolutionMethod() {
Ian Rogers50b35e22012-10-04 10:09:15 -07001008 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -08001009 Runtime* runtime = Runtime::Current();
1010 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001011 StackHandleScope<1> hs(self);
1012 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -07001013 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers19846512012-02-24 11:42:47 -08001014 // TODO: use a special method for resolution method saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -07001015 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Jeff Hao58df3272013-04-22 15:28:53 -07001016 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -08001017 if (runtime->IsCompiler()) {
1018 method->SetEntryPointFromPortableCompiledCode(nullptr);
1019 method->SetEntryPointFromQuickCompiledCode(nullptr);
1020 } else {
1021 method->SetEntryPointFromPortableCompiledCode(GetPortableResolutionTrampoline(class_linker));
1022 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionTrampoline(class_linker));
1023 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001024 return method.Get();
Ian Rogers19846512012-02-24 11:42:47 -08001025}
1026
Vladimir Marko7624d252014-05-02 14:40:15 +01001027mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) {
Ian Rogers50b35e22012-10-04 10:09:15 -07001028 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -08001029 Runtime* runtime = Runtime::Current();
1030 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001031 StackHandleScope<1> hs(self);
1032 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -07001033 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001034 // TODO: use a special method for callee saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -07001035 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001036 method->SetEntryPointFromPortableCompiledCode(nullptr);
1037 method->SetEntryPointFromQuickCompiledCode(nullptr);
Vladimir Marko7624d252014-05-02 14:40:15 +01001038 DCHECK_NE(instruction_set_, kNone);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001039 return method.Get();
Ian Rogersff1ed472011-09-20 13:46:24 -07001040}
1041
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001042void Runtime::DisallowNewSystemWeaks() {
1043 monitor_list_->DisallowNewMonitors();
1044 intern_table_->DisallowNewInterns();
1045 java_vm_->DisallowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001046 Dbg::DisallowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001047}
1048
1049void Runtime::AllowNewSystemWeaks() {
1050 monitor_list_->AllowNewMonitors();
1051 intern_table_->AllowNewInterns();
1052 java_vm_->AllowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001053 Dbg::AllowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001054}
1055
Vladimir Marko7624d252014-05-02 14:40:15 +01001056void Runtime::SetInstructionSet(InstructionSet instruction_set) {
1057 instruction_set_ = instruction_set;
1058 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) {
1059 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1060 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1061 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type);
1062 }
1063 } else if (instruction_set_ == kMips) {
1064 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1065 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1066 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type);
1067 }
1068 } else if (instruction_set_ == kX86) {
1069 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1070 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1071 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type);
1072 }
1073 } else if (instruction_set_ == kX86_64) {
1074 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1075 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1076 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type);
1077 }
1078 } else if (instruction_set_ == kArm64) {
1079 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1080 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1081 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type);
1082 }
1083 } else {
1084 UNIMPLEMENTED(FATAL) << instruction_set_;
1085 }
1086}
1087
Brian Carlstromea46f952013-07-30 01:26:50 -07001088void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001089 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
Elliott Hughes225f5a12012-06-11 11:23:48 -07001090 callee_save_methods_[type] = method;
Brian Carlstrome24fa612011-09-29 00:53:55 -07001091}
1092
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001093const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001094 if (class_loader == NULL) {
1095 return GetClassLinker()->GetBootClassPath();
1096 }
1097 CHECK(UseCompileTimeClassPath());
1098 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader);
1099 CHECK(it != compile_time_class_paths_.end());
1100 return it->second;
1101}
1102
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001103void Runtime::SetCompileTimeClassPath(jobject class_loader,
1104 std::vector<const DexFile*>& class_path) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001105 CHECK(!IsStarted());
1106 use_compile_time_class_path_ = true;
Elliott Hughesa0e18062012-04-13 15:59:59 -07001107 compile_time_class_paths_.Put(class_loader, class_path);
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001108}
1109
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001110void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) {
1111 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001112 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001113 method_verifiers_.insert(verifier);
1114}
1115
1116void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) {
1117 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001118 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001119 auto it = method_verifiers_.find(verifier);
1120 CHECK(it != method_verifiers_.end());
1121 method_verifiers_.erase(it);
1122}
1123
Calin Juravlec1b643c2014-05-30 23:44:11 +01001124void Runtime::StartProfiler(const char* profile_output_filename) {
1125 profile_output_filename_ = profile_output_filename;
1126 profiler_started_ =
1127 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_);
Dave Allison0aded082013-11-07 13:15:11 -08001128}
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001129
1130// Transaction support.
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001131void Runtime::EnterTransactionMode(Transaction* transaction) {
1132 DCHECK(IsCompiler());
1133 DCHECK(transaction != nullptr);
1134 DCHECK(!IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001135 preinitialization_transaction_ = transaction;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001136}
1137
1138void Runtime::ExitTransactionMode() {
1139 DCHECK(IsCompiler());
1140 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001141 preinitialization_transaction_ = nullptr;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001142}
1143
1144void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset,
1145 uint32_t value, bool is_volatile) const {
1146 DCHECK(IsCompiler());
1147 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001148 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001149}
1150
1151void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset,
1152 uint64_t value, bool is_volatile) const {
1153 DCHECK(IsCompiler());
1154 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001155 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001156}
1157
1158void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset,
1159 mirror::Object* value, bool is_volatile) const {
1160 DCHECK(IsCompiler());
1161 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001162 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001163}
1164
1165void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const {
1166 DCHECK(IsCompiler());
1167 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001168 preinitialization_transaction_->RecordWriteArray(array, index, value);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001169}
1170
1171void Runtime::RecordStrongStringInsertion(mirror::String* s, uint32_t hash_code) const {
1172 DCHECK(IsCompiler());
1173 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001174 preinitialization_transaction_->RecordStrongStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001175}
1176
1177void Runtime::RecordWeakStringInsertion(mirror::String* s, uint32_t hash_code) const {
1178 DCHECK(IsCompiler());
1179 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001180 preinitialization_transaction_->RecordWeakStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001181}
1182
1183void Runtime::RecordStrongStringRemoval(mirror::String* s, uint32_t hash_code) const {
1184 DCHECK(IsCompiler());
1185 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001186 preinitialization_transaction_->RecordStrongStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001187}
1188
1189void Runtime::RecordWeakStringRemoval(mirror::String* s, uint32_t hash_code) const {
1190 DCHECK(IsCompiler());
1191 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001192 preinitialization_transaction_->RecordWeakStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001193}
Mathieu Chartier15d34022014-02-26 17:16:38 -08001194
1195void Runtime::SetFaultMessage(const std::string& message) {
1196 MutexLock mu(Thread::Current(), fault_message_lock_);
1197 fault_message_ = message;
1198}
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001199
Ian Rogers8afeb852014-04-02 14:55:49 -07001200void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv)
1201 const {
Ian Rogers9bc54402014-04-17 16:40:01 -07001202 if (GetInstrumentation()->InterpretOnly()) {
1203 argv->push_back("--compiler-filter=interpret-only");
1204 }
1205
Ian Rogers8afeb852014-04-02 14:55:49 -07001206 argv->push_back("--runtime-arg");
1207 std::string checkstr = "-implicit-checks";
1208
1209 int nchecks = 0;
1210 char checksep = ':';
1211
1212 if (!ExplicitNullChecks()) {
1213 checkstr += checksep;
1214 checksep = ',';
1215 checkstr += "null";
1216 ++nchecks;
1217 }
1218 if (!ExplicitSuspendChecks()) {
1219 checkstr += checksep;
1220 checksep = ',';
1221 checkstr += "suspend";
1222 ++nchecks;
1223 }
1224
1225 if (!ExplicitStackOverflowChecks()) {
1226 checkstr += checksep;
1227 checksep = ',';
1228 checkstr += "stack";
1229 ++nchecks;
1230 }
1231
1232 if (nchecks == 0) {
1233 checkstr += ":none";
1234 }
1235 argv->push_back(checkstr);
1236
1237 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple
1238 // architecture support, dex2oat may be compiled as a different instruction-set than that
1239 // currently being executed.
Ian Rogersb9beb2e2014-05-09 16:57:40 -07001240 std::string instruction_set("--instruction-set=");
1241 instruction_set += GetInstructionSetString(kRuntimeISA);
1242 argv->push_back(instruction_set);
Ian Rogers8afeb852014-04-02 14:55:49 -07001243
1244 std::string features("--instruction-set-features=");
1245 features += GetDefaultInstructionSetFeatures();
1246 argv->push_back(features);
1247}
1248
Dave Allison39c3bfb2014-01-28 18:33:52 -08001249void Runtime::UpdateProfilerState(int state) {
Brian Carlstrom4d466a82014-05-08 19:05:29 -07001250 VLOG(profiler) << "Profiler state updated to " << state;
Dave Allison39c3bfb2014-01-28 18:33:52 -08001251}
Carl Shapiro1fb86202011-06-27 17:43:13 -07001252} // namespace art