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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 Rogers576ca0c2014-06-06 15:58:22 -070047#include "fault_handler.h"
Ian Rogers1d54e732013-05-02 21:10:01 -070048#include "gc/accounting/card_table-inl.h"
49#include "gc/heap.h"
50#include "gc/space/space.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070051#include "image.h"
jeffhao725a9572012-11-13 18:20:12 -080052#include "instrumentation.h"
Elliott Hughescf4c6c42011-09-01 15:16:42 -070053#include "intern_table.h"
Elliott Hughesc5f7c912011-08-18 14:00:42 -070054#include "jni_internal.h"
Brian Carlstromea46f952013-07-30 01:26:50 -070055#include "mirror/art_field-inl.h"
56#include "mirror/art_method-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080057#include "mirror/array.h"
Ian Rogers62d6c772013-02-27 08:32:07 -080058#include "mirror/class-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080059#include "mirror/class_loader.h"
Mathieu Chartierc528dba2013-11-26 12:00:11 -080060#include "mirror/stack_trace_element.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080061#include "mirror/throwable.h"
Elliott Hughes32d6e1e2011-10-11 14:47:44 -070062#include "monitor.h"
Brian Carlstrom491ca9e2014-03-02 18:24:38 -080063#include "parsed_options.h"
Brian Carlstrome24fa612011-09-29 00:53:55 -070064#include "oat_file.h"
Vladimir Marko7624d252014-05-02 14:40:15 +010065#include "quick/quick_method_frame_info.h"
Ian Rogers53b8b092014-03-13 23:45:53 -070066#include "reflection.h"
Elliott Hughes726079d2011-10-07 18:43:44 -070067#include "ScopedLocalRef.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070068#include "scoped_thread_state_change.h"
Elliott Hughese27955c2011-08-26 15:21:24 -070069#include "signal_catcher.h"
Elliott Hughes457005c2012-04-16 13:54:25 -070070#include "signal_set.h"
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070071#include "handle_scope-inl.h"
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070072#include "thread.h"
Elliott Hughes8daa0922011-09-11 13:46:25 -070073#include "thread_list.h"
jeffhaob5e81852012-03-12 11:15:45 -070074#include "trace.h"
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +010075#include "transaction.h"
Dave Allison0aded082013-11-07 13:15:11 -080076#include "profiler.h"
Ian Rogers776ac1f2012-04-13 23:36:36 -070077#include "verifier/method_verifier.h"
Elliott Hugheseac76672012-05-24 21:56:51 -070078#include "well_known_classes.h"
Carl Shapiro61e019d2011-07-14 16:53:09 -070079
Brian Carlstrom7934ac22013-07-26 10:54:15 -070080#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art.
Elliott Hughes90a33692011-08-30 13:27:07 -070081
Dave Allison39c3bfb2014-01-28 18:33:52 -080082#ifdef HAVE_ANDROID_OS
83#include "cutils/properties.h"
84#endif
85
Carl Shapiro1fb86202011-06-27 17:43:13 -070086namespace art {
87
Mathieu Chartierc751fdc2014-03-30 15:25:44 -070088static constexpr bool kEnableJavaStackTraceHandler = true;
Ian Rogers8afeb852014-04-02 14:55:49 -070089const char* Runtime::kDefaultInstructionSetFeatures =
90 STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES);
Carl Shapiro2ed144c2011-07-26 16:52:08 -070091Runtime* Runtime::instance_ = NULL;
92
Elliott Hughesdcc24742011-09-07 14:02:44 -070093Runtime::Runtime()
Ian Rogers6ed19fd2014-03-20 08:10:17 -070094 : pre_allocated_OutOfMemoryError_(nullptr),
95 resolution_method_(nullptr),
96 imt_conflict_method_(nullptr),
97 default_imt_(nullptr),
Vladimir Marko7624d252014-05-02 14:40:15 +010098 instruction_set_(kNone),
Ian Rogers6ed19fd2014-03-20 08:10:17 -070099 compiler_callbacks_(nullptr),
Elliott Hughesd9c67be2012-02-02 19:54:06 -0800100 is_zygote_(false),
Mathieu Chartier069387a2012-06-18 12:01:01 -0700101 is_concurrent_gc_enabled_(true),
Anwar Ghuloum87183592013-08-14 12:12:19 -0700102 is_explicit_gc_disabled_(false),
Elliott Hughes6cf23882012-06-15 15:42:07 -0700103 default_stack_size_(0),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800104 heap_(nullptr),
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700105 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800106 monitor_list_(nullptr),
107 monitor_pool_(nullptr),
108 thread_list_(nullptr),
109 intern_table_(nullptr),
110 class_linker_(nullptr),
111 signal_catcher_(nullptr),
112 java_vm_(nullptr),
Mathieu Chartier15d34022014-02-26 17:16:38 -0800113 fault_message_lock_("Fault message lock"),
114 fault_message_(""),
Ian Rogers719d1a32014-03-06 12:13:39 -0800115 method_verifier_lock_("Method verifiers lock"),
Ian Rogers120f1c72012-09-28 17:17:10 -0700116 threads_being_born_(0),
Ian Rogersc604d732012-10-14 16:09:54 -0700117 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
Elliott Hughes6b355752012-01-13 16:49:08 -0800118 shutting_down_(false),
Ian Rogers120f1c72012-09-28 17:17:10 -0700119 shutting_down_started_(false),
Elliott Hughesdcc24742011-09-07 14:02:44 -0700120 started_(false),
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700121 finished_starting_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800122 vfprintf_(nullptr),
123 exit_(nullptr),
124 abort_(nullptr),
jeffhao2692b572011-12-16 15:42:28 -0800125 stats_enabled_(false),
Mathieu Chartierda44d772014-04-01 15:01:46 -0700126 running_on_valgrind_(RUNNING_ON_VALGRIND > 0),
Calin Juravlec1b643c2014-05-30 23:44:11 +0100127 profiler_started_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800128 method_trace_(false),
Ian Rogers776ac1f2012-04-13 23:36:36 -0700129 method_trace_file_size_(0),
Ian Rogers62d6c772013-02-27 08:32:07 -0800130 instrumentation_(),
Ian Rogers365c1022012-06-22 15:05:28 -0700131 use_compile_time_class_path_(false),
Ian Rogersef7d42f2014-01-06 12:55:46 -0800132 main_thread_group_(nullptr),
133 system_thread_group_(nullptr),
134 system_class_loader_(nullptr),
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100135 dump_gc_performance_on_shutdown_(false),
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100136 preinitialization_transaction_(nullptr),
Dave Allisonb373e092014-02-20 16:06:36 -0800137 null_pointer_handler_(nullptr),
138 suspend_handler_(nullptr),
Jeff Hao4a200f52014-04-01 14:58:49 -0700139 stack_overflow_handler_(nullptr),
Jeff Haof00571c2014-05-29 17:29:47 -0700140 verify_(false),
141 target_sdk_version_(0) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700142 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800143 callee_save_methods_[i] = nullptr;
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700144 }
Elliott Hughesdcc24742011-09-07 14:02:44 -0700145}
146
Carl Shapiro61e019d2011-07-14 16:53:09 -0700147Runtime::~Runtime() {
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800148 if (dump_gc_performance_on_shutdown_) {
149 // This can't be called from the Heap destructor below because it
150 // could call RosAlloc::InspectAll() which needs the thread_list
151 // to be still alive.
152 heap_->DumpGcPerformanceInfo(LOG(INFO));
153 }
154
Ian Rogers120f1c72012-09-28 17:17:10 -0700155 Thread* self = Thread::Current();
156 {
157 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
158 shutting_down_started_ = true;
159 while (threads_being_born_ > 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700160 shutdown_cond_->Wait(self);
Ian Rogers120f1c72012-09-28 17:17:10 -0700161 }
162 shutting_down_ = true;
163 }
Wei Jin6a586912014-05-21 16:07:40 -0700164 // Shut down background profiler before the runtime exits.
Calin Juravlec1b643c2014-05-30 23:44:11 +0100165 if (profiler_started_) {
Wei Jin6a586912014-05-21 16:07:40 -0700166 BackgroundMethodSamplingProfiler::Shutdown();
167 }
168
Ian Rogers62d6c772013-02-27 08:32:07 -0800169 Trace::Shutdown();
jeffhaob5e81852012-03-12 11:15:45 -0700170
Mathieu Chartiera6399032012-06-11 18:49:50 -0700171 // Make sure to let the GC complete if it is running.
Mathieu Chartier89a201e2014-05-02 10:27:26 -0700172 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self);
Mathieu Chartier35883cc2012-11-13 14:08:12 -0800173 heap_->DeleteThreadPool();
Mathieu Chartiera6399032012-06-11 18:49:50 -0700174
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700175 // Make sure our internal threads are dead before we start tearing down things they're using.
Elliott Hughese52e49b2012-04-02 16:05:44 -0700176 Dbg::StopJdwp();
Elliott Hughes5fe594f2011-09-08 12:33:17 -0700177 delete signal_catcher_;
178
Elliott Hughes038a8062011-09-18 14:12:41 -0700179 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
Elliott Hughes93e74e82011-09-13 11:07:03 -0700180 delete thread_list_;
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700181 delete monitor_list_;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800182 delete monitor_pool_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700183 delete class_linker_;
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800184 delete heap_;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700185 delete intern_table_;
Elliott Hughesc5f7c912011-08-18 14:00:42 -0700186 delete java_vm_;
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700187 Thread::Shutdown();
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700188 QuasiAtomic::Shutdown();
Sebastien Hertz4d4adb12013-07-24 16:14:19 +0200189 verifier::MethodVerifier::Shutdown();
Carl Shapiro4acf4642011-07-26 18:54:13 -0700190 // TODO: acquire a static mutex on Runtime to avoid racing.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800191 CHECK(instance_ == nullptr || instance_ == this);
192 instance_ = nullptr;
Dave Allisonb373e092014-02-20 16:06:36 -0800193
194 delete null_pointer_handler_;
195 delete suspend_handler_;
196 delete stack_overflow_handler_;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700197}
198
Elliott Hughese0918552011-10-28 17:18:29 -0700199struct AbortState {
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700200 void Dump(std::ostream& os) NO_THREAD_SAFETY_ANALYSIS {
Ian Rogersf08e4732013-04-09 09:45:49 -0700201 if (gAborting > 1) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700202 os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
203 return;
204 }
Ian Rogersf08e4732013-04-09 09:45:49 -0700205 gAborting++;
Elliott Hughese0918552011-10-28 17:18:29 -0700206 os << "Runtime aborting...\n";
Elliott Hughes6c7d2442012-02-01 18:40:47 -0800207 if (Runtime::Current() == NULL) {
208 os << "(Runtime does not yet exist!)\n";
209 return;
210 }
Elliott Hughese0918552011-10-28 17:18:29 -0700211 Thread* self = Thread::Current();
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700212 if (self == nullptr) {
Elliott Hughese0918552011-10-28 17:18:29 -0700213 os << "(Aborting thread was not attached to runtime!)\n";
Ian Rogers37eecbd2014-05-11 02:08:15 -0700214 DumpKernelStack(os, GetTid(), " kernel: ", false);
215 DumpNativeStack(os, GetTid(), " native: ", nullptr);
Elliott Hughese0918552011-10-28 17:18:29 -0700216 } else {
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700217 os << "Aborting thread:\n";
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700218 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) {
219 DumpThread(os, self);
220 } else {
221 if (Locks::mutator_lock_->SharedTryLock(self)) {
222 DumpThread(os, self);
223 Locks::mutator_lock_->SharedUnlock(self);
224 }
Elliott Hughes899e7892012-01-24 14:57:32 -0800225 }
Elliott Hughese0918552011-10-28 17:18:29 -0700226 }
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700227 DumpAllThreads(os, self);
228 }
229
Mathieu Chartierc7a966d2014-04-10 18:06:32 -0700230 void DumpThread(std::ostream& os, Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
231 self->Dump(os);
232 if (self->IsExceptionPending()) {
233 ThrowLocation throw_location;
234 mirror::Throwable* exception = self->GetException(&throw_location);
235 os << "Pending exception " << PrettyTypeOf(exception)
236 << " thrown by '" << throw_location.Dump() << "'\n"
237 << exception->Dump();
238 }
239 }
240
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700241 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS {
242 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self);
243 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self);
Ian Rogersfbd22912012-10-12 14:21:10 -0700244 if (!tll_already_held || !ml_already_held) {
245 os << "Dumping all threads without appropriate locks held:"
246 << (!tll_already_held ? " thread list lock" : "")
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700247 << (!ml_already_held ? " mutator lock" : "")
248 << "\n";
Ian Rogers2f7f9b62012-10-10 18:24:05 -0700249 }
Ian Rogersfbd22912012-10-12 14:21:10 -0700250 os << "All threads:\n";
251 Runtime::Current()->GetThreadList()->DumpLocked(os);
Elliott Hughese0918552011-10-28 17:18:29 -0700252 }
253};
254
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700255void Runtime::Abort() {
Ian Rogersf08e4732013-04-09 09:45:49 -0700256 gAborting++; // set before taking any locks
Brian Carlstrom81b88712012-11-05 19:21:30 -0800257
Elliott Hughes131aef82012-01-27 11:53:35 -0800258 // Ensure that we don't have multiple threads trying to abort at once,
259 // which would result in significantly worse diagnostics.
Ian Rogers50b35e22012-10-04 10:09:15 -0700260 MutexLock mu(Thread::Current(), *Locks::abort_lock_);
Elliott Hughes131aef82012-01-27 11:53:35 -0800261
Elliott Hughesffe67362011-07-17 12:09:27 -0700262 // Get any pending output out of the way.
263 fflush(NULL);
264
265 // Many people have difficulty distinguish aborts from crashes,
266 // so be explicit.
Elliott Hughese0918552011-10-28 17:18:29 -0700267 AbortState state;
Elliott Hughes9ee5f9c2012-02-03 18:33:16 -0800268 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
Elliott Hughesffe67362011-07-17 12:09:27 -0700269
Elliott Hughes8593fdb2012-04-21 20:53:44 -0700270 // Call the abort hook if we have one.
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700271 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700272 LOG(INTERNAL_FATAL) << "Calling abort hook...";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700273 Runtime::Current()->abort_();
274 // notreached
Elliott Hughes6c1c69e2012-04-23 16:12:51 -0700275 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700276 }
277
Elliott Hughesdd623db2013-06-11 11:20:23 -0700278#if defined(__GLIBC__)
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700279 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3),
280 // which POSIX defines in terms of raise(3), which POSIX defines in terms
281 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through
282 // libpthread, which means the stacks we dump would be useless. Calling
283 // tgkill(2) directly avoids that.
284 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700285 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM?
286 // 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 -0800287 exit(1);
Elliott Hughesdd623db2013-06-11 11:20:23 -0700288#else
289 abort();
Elliott Hughesd06a6c72012-05-30 17:59:06 -0700290#endif
Elliott Hughesffe67362011-07-17 12:09:27 -0700291 // notreached
292}
293
Narayan Kamath3de95a72014-04-02 12:54:23 +0100294void Runtime::PreZygoteFork() {
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700295 heap_->PreZygoteFork();
Mathieu Chartiercc236d72012-07-20 10:29:05 -0700296}
297
Elliott Hughesbf86d042011-08-31 17:53:14 -0700298void Runtime::CallExitHook(jint status) {
299 if (exit_ != NULL) {
Elliott Hughes34e06962012-04-09 13:55:55 -0700300 ScopedThreadStateChange tsc(Thread::Current(), kNative);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700301 exit_(status);
302 LOG(WARNING) << "Exit hook returned instead of exiting!";
303 }
304}
305
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800306void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) {
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700307 GetInternTable()->SweepInternTableWeaks(visitor, arg);
308 GetMonitorList()->SweepMonitorList(visitor, arg);
309 GetJavaVM()->SweepJniWeakGlobals(visitor, arg);
Mathieu Chartier412c7fc2014-02-07 12:18:39 -0800310 Dbg::UpdateObjectPointers(visitor, arg);
Mathieu Chartier6aa3df92013-09-17 15:17:28 -0700311}
312
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700313bool Runtime::Create(const Options& options, bool ignore_unrecognized) {
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700314 // TODO: acquire a static mutex on Runtime to avoid racing.
315 if (Runtime::instance_ != NULL) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700316 return false;
Carl Shapiro2ed144c2011-07-26 16:52:08 -0700317 }
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700318 InitLogging(NULL); // Calls Locks::Init() as a side effect.
Elliott Hughesdcc24742011-09-07 14:02:44 -0700319 instance_ = new Runtime;
320 if (!instance_->Init(options, ignore_unrecognized)) {
321 delete instance_;
322 instance_ = NULL;
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700323 return false;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700324 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700325 return true;
Brian Carlstrom69b15fb2011-09-03 12:25:21 -0700326}
Elliott Hughes0af55432011-08-17 18:37:28 -0700327
Brian Carlstromce888532013-10-10 00:32:58 -0700328jobject CreateSystemClassLoader() {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800329 if (Runtime::Current()->UseCompileTimeClassPath()) {
Brian Carlstromce888532013-10-10 00:32:58 -0700330 return NULL;
Brian Carlstromaded5f72011-10-07 17:15:04 -0700331 }
332
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700333 ScopedObjectAccess soa(Thread::Current());
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800334 ClassLinker* cl = Runtime::Current()->GetClassLinker();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700335
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700336 StackHandleScope<3> hs(soa.Self());
337 Handle<mirror::Class> class_loader_class(
338 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader)));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800339 CHECK(cl->EnsureInitialized(class_loader_class, true, true));
Brian Carlstromaded5f72011-10-07 17:15:04 -0700340
Brian Carlstromea46f952013-07-30 01:26:50 -0700341 mirror::ArtMethod* getSystemClassLoader =
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800342 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
Brian Carlstromdf143242011-10-10 18:05:34 -0700343 CHECK(getSystemClassLoader != NULL);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700344
Ian Rogers53b8b092014-03-13 23:45:53 -0700345 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700346 Handle<mirror::ClassLoader> class_loader(
347 hs.NewHandle(down_cast<mirror::ClassLoader*>(result.GetL())));
348 CHECK(class_loader.Get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700349 JNIEnv* env = soa.Self()->GetJniEnv();
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800350 ScopedLocalRef<jobject> system_class_loader(env,
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700351 soa.AddLocalReference<jobject>(class_loader.Get()));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800352 CHECK(system_class_loader.get() != nullptr);
Brian Carlstromce888532013-10-10 00:32:58 -0700353
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700354 soa.Self()->SetClassLoaderOverride(class_loader.Get());
Ian Rogers365c1022012-06-22 15:05:28 -0700355
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700356 Handle<mirror::Class> thread_class(
357 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread)));
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800358 CHECK(cl->EnsureInitialized(thread_class, true, true));
Ian Rogers365c1022012-06-22 15:05:28 -0700359
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800360 mirror::ArtField* contextClassLoader =
361 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;");
Jesse Wilson1b2b2f22011-11-22 11:47:44 -0500362 CHECK(contextClassLoader != NULL);
Ian Rogers365c1022012-06-22 15:05:28 -0700363
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100364 // We can't run in a transaction yet.
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700365 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.Get());
Brian Carlstromce888532013-10-10 00:32:58 -0700366
367 return env->NewGlobalRef(system_class_loader.get());
Brian Carlstromaded5f72011-10-07 17:15:04 -0700368}
369
Tsu Chiang Chuang12e6d742014-05-22 10:22:25 -0700370std::string Runtime::GetCompilerExecutable() const {
371 if (!compiler_executable_.empty()) {
372 return compiler_executable_;
373 }
374 std::string compiler_executable(GetAndroidRoot());
375 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat");
376 return compiler_executable;
377}
378
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700379bool Runtime::Start() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800380 VLOG(startup) << "Runtime::Start entering";
Brian Carlstrom58ae9412011-10-04 00:56:06 -0700381
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700382 // Restore main thread state to kNative as expected by native code.
Ian Rogersa436fde2013-08-27 23:34:06 -0700383 Thread* self = Thread::Current();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700384 self->TransitionFromRunnableToSuspended(kNative);
385
Brian Carlstrom5d40f182011-09-26 22:29:18 -0700386 started_ = true;
387
Brian Carlstromae826982011-11-09 01:33:42 -0800388 // InitNativeMethods needs to be after started_ so that the classes
389 // it touches will have methods linked to the oat file if necessary.
390 InitNativeMethods();
391
Ian Rogers365c1022012-06-22 15:05:28 -0700392 // Initialize well known thread group values that may be accessed threads while attaching.
393 InitThreadGroups(self);
394
Jesse Wilson9a6bae82011-11-14 14:57:30 -0500395 Thread::FinishStartup();
396
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700397 if (is_zygote_) {
398 if (!InitZygote()) {
399 return false;
400 }
401 } else {
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700402 DidForkFromZygote();
403 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700404
Elliott Hughes85d15452011-09-16 17:33:01 -0700405 StartDaemonThreads();
Brian Carlstrom0a5b14d2011-09-27 13:29:15 -0700406
Brian Carlstromce888532013-10-10 00:32:58 -0700407 system_class_loader_ = CreateSystemClassLoader();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700408
Yevgeny Rouban35aef2c2014-05-19 16:19:36 +0700409 {
410 ScopedObjectAccess soa(self);
411 self->GetJniEnv()->locals.AssertEmpty();
412 }
Elliott Hughes726079d2011-10-07 18:43:44 -0700413
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800414 VLOG(startup) << "Runtime::Start exiting";
Mathieu Chartier7664f5c2012-06-08 18:15:32 -0700415 finished_starting_ = true;
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700416
Calin Juravlec1b643c2014-05-30 23:44:11 +0100417 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) {
418 // User has asked for a profile using -Xenable-profiler.
Dave Allison39c3bfb2014-01-28 18:33:52 -0800419 // Create the profile file if it doesn't exist.
420 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660);
421 if (fd >= 0) {
422 close(fd);
423 }
Calin Juravlec1b643c2014-05-30 23:44:11 +0100424 StartProfiler(profile_output_filename_.c_str());
Dave Allison0aded082013-11-07 13:15:11 -0800425 }
426
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700427 return true;
Elliott Hughes85d15452011-09-16 17:33:01 -0700428}
429
Ian Rogers120f1c72012-09-28 17:17:10 -0700430void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) {
431 DCHECK_GT(threads_being_born_, 0U);
432 threads_being_born_--;
433 if (shutting_down_started_ && threads_being_born_ == 0) {
Ian Rogersc604d732012-10-14 16:09:54 -0700434 shutdown_cond_->Broadcast(Thread::Current());
Ian Rogers120f1c72012-09-28 17:17:10 -0700435 }
436}
437
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700438// Do zygote-mode-only initialization.
439bool Runtime::InitZygote() {
440 // zygote goes into its own process group
Brian Carlstromb1eba212013-07-17 18:07:19 -0700441 setpgid(0, 0);
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700442
443 // See storage config details at http://source.android.com/tech/storage/
444 // Create private mount namespace shared by all children
445 if (unshare(CLONE_NEWNS) == -1) {
446 PLOG(WARNING) << "Failed to unshare()";
447 return false;
448 }
449
450 // Mark rootfs as being a slave so that changes from default
451 // namespace only flow into our children.
452 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) {
453 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE";
454 return false;
455 }
456
457 // Create a staging tmpfs that is shared by our children; they will
458 // bind mount storage into their respective private namespaces, which
459 // are isolated from each other.
460 const char* target_base = getenv("EMULATED_STORAGE_TARGET");
461 if (target_base != NULL) {
462 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV,
Jeff Sharkey52cd1e82013-09-17 16:25:12 -0700463 "uid=0,gid=1028,mode=0751") == -1) {
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700464 LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
465 return false;
466 }
467 }
468
469 return true;
470}
471
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700472void Runtime::DidForkFromZygote() {
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700473 is_zygote_ = false;
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700474
Mathieu Chartier02b6a782012-10-26 13:51:26 -0700475 // Create the thread pool.
476 heap_->CreateThreadPool();
477
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700478 StartSignalCatcher();
Elliott Hughesd1cc8362011-10-24 16:58:50 -0700479
480 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y",
481 // this will pause the runtime, so we probably want this to come last.
482 Dbg::StartJdwp();
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700483}
484
485void Runtime::StartSignalCatcher() {
486 if (!is_zygote_) {
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700487 signal_catcher_ = new SignalCatcher(stack_trace_file_);
Brian Carlstromcaabb1b2011-10-11 18:09:13 -0700488 }
489}
490
Mathieu Chartier590fee92013-09-13 13:46:47 -0700491bool Runtime::IsShuttingDown(Thread* self) {
492 MutexLock mu(self, *Locks::runtime_shutdown_lock_);
493 return IsShuttingDownLocked();
494}
495
Elliott Hughes85d15452011-09-16 17:33:01 -0700496void Runtime::StartDaemonThreads() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800497 VLOG(startup) << "Runtime::StartDaemonThreads entering";
Elliott Hughes85d15452011-09-16 17:33:01 -0700498
Elliott Hughes719b3232011-09-25 17:42:19 -0700499 Thread* self = Thread::Current();
Brian Carlstromaded5f72011-10-07 17:15:04 -0700500
501 // Must be in the kNative state for calling native methods.
Ian Rogers50b35e22012-10-04 10:09:15 -0700502 CHECK_EQ(self->GetState(), kNative);
Brian Carlstromaded5f72011-10-07 17:15:04 -0700503
Elliott Hughes719b3232011-09-25 17:42:19 -0700504 JNIEnv* env = self->GetJniEnv();
Ian Rogers2fa6b2e2012-10-17 00:10:17 -0700505 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons,
506 WellKnownClasses::java_lang_Daemons_start);
507 if (env->ExceptionCheck()) {
508 env->ExceptionDescribe();
509 LOG(FATAL) << "Error starting java.lang.Daemons";
510 }
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700511
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800512 VLOG(startup) << "Runtime::StartDaemonThreads exiting";
Carl Shapiro61e019d2011-07-14 16:53:09 -0700513}
514
Elliott Hughes0af55432011-08-17 18:37:28 -0700515bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) {
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700516 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700517
Ian Rogers700a4022014-05-19 16:49:03 -0700518 std::unique_ptr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
Elliott Hughes90a33692011-08-30 13:27:07 -0700519 if (options.get() == NULL) {
Brian Carlstrome24fa612011-09-29 00:53:55 -0700520 LOG(ERROR) << "Failed to parse options";
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700521 return false;
522 }
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800523 VLOG(startup) << "Runtime::Init -verbose:startup enabled";
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700524
Elliott Hughes7c6169d2012-05-02 16:11:48 -0700525 QuasiAtomic::Startup();
526
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800527 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
Elliott Hughes32d6e1e2011-10-11 14:47:44 -0700528
Brian Carlstroma004aa92012-02-08 18:05:09 -0800529 boot_class_path_string_ = options->boot_class_path_string_;
530 class_path_string_ = options->class_path_string_;
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700531 properties_ = options->properties_;
532
Vladimir Marko2b5eaa22013-12-13 13:59:30 +0000533 compiler_callbacks_ = options->compiler_callbacks_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700534 is_zygote_ = options->is_zygote_;
Anwar Ghuloum87183592013-08-14 12:12:19 -0700535 is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_;
Elliott Hughes9ca7a1f2011-10-11 14:29:52 -0700536
Elliott Hughes0af55432011-08-17 18:37:28 -0700537 vfprintf_ = options->hook_vfprintf_;
538 exit_ = options->hook_exit_;
539 abort_ = options->hook_abort_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700540
Elliott Hughesbe759c62011-09-08 19:38:21 -0700541 default_stack_size_ = options->stack_size_;
Elliott Hughes94ce37a2011-10-18 15:07:48 -0700542 stack_trace_file_ = options->stack_trace_file_;
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700543
Tsu Chiang Chuang12e6d742014-05-22 10:22:25 -0700544 compiler_executable_ = options->compiler_executable_;
Brian Carlstrom2ec65202014-03-03 15:16:37 -0800545 compiler_options_ = options->compiler_options_;
546 image_compiler_options_ = options->image_compiler_options_;
547
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700548 max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_;
549
Elliott Hughesc33a32b2011-10-11 18:18:07 -0700550 monitor_list_ = new MonitorList;
Ian Rogersef7d42f2014-01-06 12:55:46 -0800551 monitor_pool_ = MonitorPool::Create();
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800552 thread_list_ = new ThreadList;
Elliott Hughescf4c6c42011-09-01 15:16:42 -0700553 intern_table_ = new InternTable;
554
Jeff Hao4a200f52014-04-01 14:58:49 -0700555 verify_ = options->verify_;
Logan Chiendd361c92012-04-10 23:40:37 +0800556
Ian Rogers62d6c772013-02-27 08:32:07 -0800557 if (options->interpreter_only_) {
558 GetInstrumentation()->ForceInterpretOnly();
559 }
560
Dave Allisonf4b80bc2014-05-14 15:41:25 -0700561 bool implicit_checks_supported = false;
562 switch (kRuntimeISA) {
563 case kArm:
564 case kThumb2:
565 implicit_checks_supported = true;
566 break;
567 default:
568 break;
569 }
570
571 if (implicit_checks_supported &&
572 (options->explicit_checks_ != (ParsedOptions::kExplicitSuspendCheck |
573 ParsedOptions::kExplicitNullCheck |
574 ParsedOptions::kExplicitStackOverflowCheck) || kEnableJavaStackTraceHandler)) {
Dave Allisonb373e092014-02-20 16:06:36 -0800575 fault_manager.Init();
576
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700577 // These need to be in a specific order. The null point check handler must be
578 // after the suspend check and stack overflow check handlers.
Dave Allisonb373e092014-02-20 16:06:36 -0800579 if ((options->explicit_checks_ & ParsedOptions::kExplicitSuspendCheck) == 0) {
580 suspend_handler_ = new SuspensionHandler(&fault_manager);
581 }
582
583 if ((options->explicit_checks_ & ParsedOptions::kExplicitStackOverflowCheck) == 0) {
584 stack_overflow_handler_ = new StackOverflowHandler(&fault_manager);
585 }
586
587 if ((options->explicit_checks_ & ParsedOptions::kExplicitNullCheck) == 0) {
588 null_pointer_handler_ = new NullPointerHandler(&fault_manager);
589 }
Mathieu Chartierc751fdc2014-03-30 15:25:44 -0700590
591 if (kEnableJavaStackTraceHandler) {
592 new JavaStackTraceHandler(&fault_manager);
593 }
Dave Allisonb373e092014-02-20 16:06:36 -0800594 }
595
Ian Rogers1d54e732013-05-02 21:10:01 -0700596 heap_ = new gc::Heap(options->heap_initial_size_,
597 options->heap_growth_limit_,
598 options->heap_min_free_,
599 options->heap_max_free_,
600 options->heap_target_utilization_,
Mathieu Chartier2f8da3e2014-04-15 15:37:02 -0700601 options->foreground_heap_growth_multiplier_,
Ian Rogers1d54e732013-05-02 21:10:01 -0700602 options->heap_maximum_size_,
603 options->image_,
Narayan Kamath11d9f062014-04-23 20:24:57 +0100604 options->image_isa_,
Mathieu Chartier0de9f732013-11-22 17:58:48 -0800605 options->collector_type_,
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800606 options->background_collector_type_,
Mathieu Chartier2775ee42013-08-20 17:43:47 -0700607 options->parallel_gc_threads_,
608 options->conc_gc_threads_,
609 options->low_memory_mode_,
610 options->long_pause_log_threshold_,
611 options->long_gc_log_threshold_,
Mathieu Chartier692fafd2013-11-29 17:24:40 -0800612 options->ignore_max_footprint_,
Mathieu Chartier938a03b2014-01-16 15:10:31 -0800613 options->use_tlab_,
614 options->verify_pre_gc_heap_,
Mathieu Chartier6f365cc2014-04-23 12:42:27 -0700615 options->verify_pre_sweeping_heap_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800616 options->verify_post_gc_heap_,
617 options->verify_pre_gc_rosalloc_,
Mathieu Chartier6f365cc2014-04-23 12:42:27 -0700618 options->verify_pre_sweeping_rosalloc_,
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800619 options->verify_post_gc_rosalloc_);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700620
Hiroshi Yamauchi2e899a92013-11-22 16:50:12 -0800621 dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_;
622
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700623 BlockSignals();
Elliott Hughes457005c2012-04-16 13:54:25 -0700624 InitPlatformSignalHandlers();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700625
Elliott Hughesa0957642011-09-02 14:27:33 -0700626 java_vm_ = new JavaVMExt(this, options.get());
Elliott Hughes515a5bc2011-08-17 11:08:34 -0700627
Elliott Hughesbe759c62011-09-08 19:38:21 -0700628 Thread::Startup();
Elliott Hughesd92bec42011-09-02 17:04:36 -0700629
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800630 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating
631 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main
632 // thread, we do not get a java peer.
633 Thread* self = Thread::Attach("main", false, NULL, false);
Ian Rogersdd7624d2014-03-14 17:43:00 -0700634 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId);
Ian Rogers120f1c72012-09-28 17:17:10 -0700635 CHECK(self != NULL);
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700636
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700637 // Set us to runnable so tools using a runtime can allocate and GC by default
Ian Rogers120f1c72012-09-28 17:17:10 -0700638 self->TransitionFromSuspendedToRunnable();
Brian Carlstromf28bc5b2011-10-26 01:15:03 -0700639
Ian Rogersa436fde2013-08-27 23:34:06 -0700640 // Now we're attached, we can take the heap locks and validate the heap.
Ian Rogers141d6222012-04-05 12:23:06 -0700641 GetHeap()->EnableObjectValidation();
642
Ian Rogers1d54e732013-05-02 21:10:01 -0700643 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700644 class_linker_ = new ClassLinker(intern_table_);
645 if (GetHeap()->HasImageSpace()) {
646 class_linker_->InitFromImage();
Hiroshi Yamauchibd0fb612014-05-20 13:46:00 -0700647 if (kIsDebugBuild) {
648 GetHeap()->GetImageSpace()->VerifyImageAllocations();
649 }
Brian Carlstroma004aa92012-02-08 18:05:09 -0800650 } else {
651 CHECK(options->boot_class_path_ != NULL);
652 CHECK_NE(options->boot_class_path_->size(), 0U);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700653 class_linker_->InitFromCompiler(*options->boot_class_path_);
Brian Carlstroma004aa92012-02-08 18:05:09 -0800654 }
655 CHECK(class_linker_ != NULL);
Sameer Abu Asal51a5fb72013-02-19 14:25:01 -0800656 verifier::MethodVerifier::Init();
Brian Carlstrom6ea095a2011-08-16 15:26:54 -0700657
jeffhaob5e81852012-03-12 11:15:45 -0700658 method_trace_ = options->method_trace_;
659 method_trace_file_ = options->method_trace_file_;
660 method_trace_file_size_ = options->method_trace_file_size_;
661
Dave Allison0aded082013-11-07 13:15:11 -0800662 profile_output_filename_ = options->profile_output_filename_;
Calin Juravlec1b643c2014-05-30 23:44:11 +0100663 profiler_options_ = options->profiler_options_;
664
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800665 // TODO: move this to just be an Trace::Start argument
666 Trace::SetDefaultClockSource(options->profile_clock_source_);
Dave Allison0aded082013-11-07 13:15:11 -0800667
jeffhaob5e81852012-03-12 11:15:45 -0700668 if (options->method_trace_) {
Jeff Hao23009dc2013-08-22 15:36:42 -0700669 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0,
670 false, false, 0);
jeffhaob5e81852012-03-12 11:15:45 -0700671 }
672
Ian Rogersa436fde2013-08-27 23:34:06 -0700673 // Pre-allocate an OutOfMemoryError for the double-OOME case.
674 self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;",
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800675 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; "
676 "no stack available");
Ian Rogersa436fde2013-08-27 23:34:06 -0700677 pre_allocated_OutOfMemoryError_ = self->GetException(NULL);
678 self->ClearException();
679
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800680 VLOG(startup) << "Runtime::Init exiting";
Carl Shapiro1fb86202011-06-27 17:43:13 -0700681 return true;
682}
683
Elliott Hughes038a8062011-09-18 14:12:41 -0700684void Runtime::InitNativeMethods() {
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800685 VLOG(startup) << "Runtime::InitNativeMethods entering";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700686 Thread* self = Thread::Current();
687 JNIEnv* env = self->GetJniEnv();
688
Elliott Hughes418d20f2011-09-22 14:00:39 -0700689 // Must be in the kNative state for calling native methods (JNI_OnLoad code).
Ian Rogers50b35e22012-10-04 10:09:15 -0700690 CHECK_EQ(self->GetState(), kNative);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700691
Elliott Hughes418d20f2011-09-22 14:00:39 -0700692 // First set up JniConstants, which is used by both the runtime's built-in native
693 // methods and libcore.
Elliott Hughesfea966e2011-09-22 10:26:20 -0700694 JniConstants::init(env);
Elliott Hugheseac76672012-05-24 21:56:51 -0700695 WellKnownClasses::Init(env);
Elliott Hughesfea966e2011-09-22 10:26:20 -0700696
Elliott Hughes418d20f2011-09-22 14:00:39 -0700697 // Then set up the native methods provided by the runtime itself.
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700698 RegisterRuntimeNativeMethods(env);
699
Elliott Hughes418d20f2011-09-22 14:00:39 -0700700 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad.
701 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's
702 // the library that implements System.loadLibrary!
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700703 {
704 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
705 std::string reason;
706 self->TransitionFromSuspendedToRunnable();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700707 StackHandleScope<1> hs(self);
708 auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr));
Mathieu Chartier055d46c2014-02-06 11:22:17 -0800709 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700710 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
711 }
712 self->TransitionFromRunnableToSuspended(kNative);
713 }
Ian Rogersef28b142012-11-30 14:22:18 -0800714
715 // Initialize well known classes that may invoke runtime native methods.
716 WellKnownClasses::LateInit(env);
717
Elliott Hughes4dd9b4d2011-12-12 18:29:24 -0800718 VLOG(startup) << "Runtime::InitNativeMethods exiting";
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700719}
720
Ian Rogers365c1022012-06-22 15:05:28 -0700721void Runtime::InitThreadGroups(Thread* self) {
722 JNIEnvExt* env = self->GetJniEnv();
723 ScopedJniEnvLocalRefState env_state(env);
724 main_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800725 env->NewGlobalRef(env->GetStaticObjectField(
726 WellKnownClasses::java_lang_ThreadGroup,
727 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700728 CHECK(main_thread_group_ != NULL || IsCompiler());
Ian Rogers365c1022012-06-22 15:05:28 -0700729 system_thread_group_ =
Brian Carlstrom491ca9e2014-03-02 18:24:38 -0800730 env->NewGlobalRef(env->GetStaticObjectField(
731 WellKnownClasses::java_lang_ThreadGroup,
732 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
Brian Carlstrom034f76b2012-08-01 15:51:58 -0700733 CHECK(system_thread_group_ != NULL || IsCompiler());
734}
735
736jobject Runtime::GetMainThreadGroup() const {
737 CHECK(main_thread_group_ != NULL || IsCompiler());
738 return main_thread_group_;
739}
740
741jobject Runtime::GetSystemThreadGroup() const {
742 CHECK(system_thread_group_ != NULL || IsCompiler());
743 return system_thread_group_;
Ian Rogers365c1022012-06-22 15:05:28 -0700744}
745
Brian Carlstromce888532013-10-10 00:32:58 -0700746jobject Runtime::GetSystemClassLoader() const {
747 CHECK(system_class_loader_ != NULL || IsCompiler());
748 return system_class_loader_;
749}
750
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700751void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
752#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
Ian Rogers5167c972012-02-03 10:41:20 -0800753 // Register Throwable first so that registration of other native methods can throw exceptions
754 REGISTER(register_java_lang_Throwable);
Brian Carlstromf91c8c32011-09-21 17:30:34 -0700755 REGISTER(register_dalvik_system_DexFile);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700756 REGISTER(register_dalvik_system_VMDebug);
Elliott Hughes7ede61e2011-09-14 18:18:06 -0700757 REGISTER(register_dalvik_system_VMRuntime);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700758 REGISTER(register_dalvik_system_VMStack);
Narayan Kamath8b2c8b92014-03-31 16:44:54 +0100759 REGISTER(register_dalvik_system_ZygoteHooks);
Elliott Hughesd369bb72011-09-12 14:41:14 -0700760 REGISTER(register_java_lang_Class);
Ian Rogers8b2c0b92013-09-19 02:56:49 -0700761 REGISTER(register_java_lang_DexCache);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700762 REGISTER(register_java_lang_Object);
763 REGISTER(register_java_lang_Runtime);
764 REGISTER(register_java_lang_String);
765 REGISTER(register_java_lang_System);
Elliott Hughes8daa0922011-09-11 13:46:25 -0700766 REGISTER(register_java_lang_Thread);
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700767 REGISTER(register_java_lang_VMClassLoader);
Mathieu Chartier78f7b4c2014-05-06 10:57:27 -0700768 REGISTER(register_java_lang_ref_Reference);
Brian Carlstrom5b8e4c82011-09-18 01:38:59 -0700769 REGISTER(register_java_lang_reflect_Array);
Elliott Hughes2a20cfd2011-09-23 19:30:41 -0700770 REGISTER(register_java_lang_reflect_Constructor);
Brian Carlstromf867b6f2011-09-16 12:17:25 -0700771 REGISTER(register_java_lang_reflect_Field);
772 REGISTER(register_java_lang_reflect_Method);
Jesse Wilson95caa792011-10-12 18:14:17 -0400773 REGISTER(register_java_lang_reflect_Proxy);
Elliott Hughesbf86d042011-08-31 17:53:14 -0700774 REGISTER(register_java_util_concurrent_atomic_AtomicLong);
Brian Carlstrom395520e2011-09-25 19:35:00 -0700775 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
Elliott Hughesf6a1e1e2011-10-25 16:28:04 -0700776 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
Elliott Hughes5ee7a8b2011-09-13 16:40:07 -0700777 REGISTER(register_sun_misc_Unsafe);
Elliott Hughesad7c2a32011-08-31 11:58:10 -0700778#undef REGISTER
779}
780
Elliott Hughesc967f782012-04-16 10:23:15 -0700781void Runtime::DumpForSigQuit(std::ostream& os) {
Elliott Hughescac6cc72011-11-03 20:31:21 -0700782 GetClassLinker()->DumpForSigQuit(os);
783 GetInternTable()->DumpForSigQuit(os);
Elliott Hughesae80b492012-04-24 10:43:17 -0700784 GetJavaVM()->DumpForSigQuit(os);
Elliott Hughesc967f782012-04-16 10:23:15 -0700785 GetHeap()->DumpForSigQuit(os);
Elliott Hughes42ee1422011-09-06 12:33:32 -0700786 os << "\n";
Elliott Hughes8daa0922011-09-11 13:46:25 -0700787
Elliott Hughesc967f782012-04-16 10:23:15 -0700788 thread_list_->DumpForSigQuit(os);
Ian Rogers56edc432013-01-18 16:51:51 -0800789 BaseMutex::DumpAll(os);
Elliott Hughese27955c2011-08-26 15:21:24 -0700790}
791
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800792void Runtime::DumpLockHolders(std::ostream& os) {
Ian Rogersb726dcb2012-09-05 08:57:23 -0700793 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800794 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
795 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
796 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700797 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
798 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
Elliott Hughes21a5bf22011-12-07 14:35:20 -0800799 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n"
800 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n"
801 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n";
802 }
803}
804
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700805void Runtime::SetStatsEnabled(bool new_state) {
806 if (new_state == true) {
807 GetStats()->Clear(~0);
808 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
809 Thread::Current()->GetStats()->Clear(~0);
Ian Rogersfa824272013-11-05 16:12:57 -0800810 GetInstrumentation()->InstrumentQuickAllocEntryPoints();
Hiroshi Yamauchi3b4c1892013-09-12 21:33:12 -0700811 } else {
Ian Rogersfa824272013-11-05 16:12:57 -0800812 GetInstrumentation()->UninstrumentQuickAllocEntryPoints();
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700813 }
814 stats_enabled_ = new_state;
815}
816
817void Runtime::ResetStats(int kinds) {
818 GetStats()->Clear(kinds & 0xffff);
819 // TODO: wouldn't it make more sense to clear _all_ threads' stats?
820 Thread::Current()->GetStats()->Clear(kinds >> 16);
821}
822
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700823int32_t Runtime::GetStat(int kind) {
824 RuntimeStats* stats;
825 if (kind < (1<<16)) {
826 stats = GetStats();
827 } else {
828 stats = Thread::Current()->GetStats();
829 kind >>= 16;
830 }
831 switch (kind) {
832 case KIND_ALLOCATED_OBJECTS:
833 return stats->allocated_objects;
834 case KIND_ALLOCATED_BYTES:
835 return stats->allocated_bytes;
836 case KIND_FREED_OBJECTS:
837 return stats->freed_objects;
838 case KIND_FREED_BYTES:
839 return stats->freed_bytes;
840 case KIND_GC_INVOCATIONS:
841 return stats->gc_for_alloc_count;
842 case KIND_CLASS_INIT_COUNT:
843 return stats->class_init_count;
844 case KIND_CLASS_INIT_TIME:
845 // Convert ns to us, reduce to 32 bits.
Elliott Hughes398f64b2012-03-26 18:05:48 -0700846 return static_cast<int>(stats->class_init_time_ns / 1000);
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700847 case KIND_EXT_ALLOCATED_OBJECTS:
848 case KIND_EXT_ALLOCATED_BYTES:
849 case KIND_EXT_FREED_OBJECTS:
850 case KIND_EXT_FREED_BYTES:
851 return 0; // backward compatibility
852 default:
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700853 LOG(FATAL) << "Unknown statistic " << kind;
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700854 return -1; // unreachable
Elliott Hughes9d5ccec2011-09-19 13:19:50 -0700855 }
856}
857
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700858void Runtime::BlockSignals() {
Elliott Hughes457005c2012-04-16 13:54:25 -0700859 SignalSet signals;
860 signals.Add(SIGPIPE);
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700861 // SIGQUIT is used to dump the runtime's state (including stack traces).
Elliott Hughes457005c2012-04-16 13:54:25 -0700862 signals.Add(SIGQUIT);
Elliott Hughes08795042012-04-03 14:48:52 -0700863 // SIGUSR1 is used to initiate a GC.
Elliott Hughes457005c2012-04-16 13:54:25 -0700864 signals.Add(SIGUSR1);
865 signals.Block();
Elliott Hughesc1674ed2011-08-25 18:09:09 -0700866}
867
Mathieu Chartier664bebf2012-11-12 16:54:11 -0800868bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group,
869 bool create_peer) {
870 bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL;
Elliott Hughes22869a92012-03-27 14:08:24 -0700871 if (thread_name == NULL) {
872 LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
873 }
Ian Rogers120f1c72012-09-28 17:17:10 -0700874 return success;
Carl Shapiro61e019d2011-07-14 16:53:09 -0700875}
876
Elliott Hughesd92bec42011-09-02 17:04:36 -0700877void Runtime::DetachCurrentThread() {
Brian Carlstrom4d571432012-05-16 00:21:41 -0700878 Thread* self = Thread::Current();
879 if (self == NULL) {
880 LOG(FATAL) << "attempting to detach thread that is not attached";
881 }
Ian Rogers0399dde2012-06-06 17:09:28 -0700882 if (self->HasManagedStack()) {
Elliott Hughes22869a92012-03-27 14:08:24 -0700883 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
884 }
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700885 thread_list_->Unregister(self);
Carl Shapiro1fb86202011-06-27 17:43:13 -0700886}
887
Ian Rogersa436fde2013-08-27 23:34:06 -0700888 mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() const {
889 if (pre_allocated_OutOfMemoryError_ == NULL) {
890 LOG(ERROR) << "Failed to return pre-allocated OOME";
891 }
892 return pre_allocated_OutOfMemoryError_;
893}
894
Mathieu Chartier893263b2014-03-04 11:07:42 -0800895void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) {
896 // Visit the classes held as static in mirror classes, these can be visited concurrently and only
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700897 // need to be visited once per GC since they never change.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800898 mirror::ArtField::VisitRoots(callback, arg);
899 mirror::ArtMethod::VisitRoots(callback, arg);
900 mirror::Class::VisitRoots(callback, arg);
901 mirror::StackTraceElement::VisitRoots(callback, arg);
902 mirror::String::VisitRoots(callback, arg);
903 mirror::Throwable::VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800904 // Visit all the primitive array types classes.
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800905 mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg); // BooleanArray
906 mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg); // ByteArray
907 mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg); // CharArray
908 mirror::PrimitiveArray<double>::VisitRoots(callback, arg); // DoubleArray
909 mirror::PrimitiveArray<float>::VisitRoots(callback, arg); // FloatArray
910 mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg); // IntArray
911 mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg); // LongArray
912 mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg); // ShortArray
Mathieu Chartier893263b2014-03-04 11:07:42 -0800913}
914
915void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
916 intern_table_->VisitRoots(callback, arg, flags);
917 class_linker_->VisitRoots(callback, arg, flags);
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700918 Dbg::VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800919 if ((flags & kVisitRootFlagNewRoots) == 0) {
920 // Guaranteed to have no new roots in the constant roots.
921 VisitConstantRoots(callback, arg);
922 }
923}
924
925void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800926 java_vm_->VisitRoots(callback, arg);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700927 if (pre_allocated_OutOfMemoryError_ != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800928 callback(reinterpret_cast<mirror::Object**>(&pre_allocated_OutOfMemoryError_), arg, 0,
929 kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700930 DCHECK(pre_allocated_OutOfMemoryError_ != nullptr);
Elliott Hughes225f5a12012-06-11 11:23:48 -0700931 }
Mathieu Chartier815873e2014-02-13 18:02:13 -0800932 callback(reinterpret_cast<mirror::Object**>(&resolution_method_), arg, 0, kRootVMInternal);
Mathieu Chartier423d2a32013-09-12 17:33:56 -0700933 DCHECK(resolution_method_ != nullptr);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700934 if (HasImtConflictMethod()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800935 callback(reinterpret_cast<mirror::Object**>(&imt_conflict_method_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700936 }
937 if (HasDefaultImt()) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800938 callback(reinterpret_cast<mirror::Object**>(&default_imt_), arg, 0, kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700939 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700940 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Mathieu Chartier590fee92013-09-13 13:46:47 -0700941 if (callee_save_methods_[i] != nullptr) {
Mathieu Chartier815873e2014-02-13 18:02:13 -0800942 callback(reinterpret_cast<mirror::Object**>(&callee_save_methods_[i]), arg, 0,
943 kRootVMInternal);
Mathieu Chartier590fee92013-09-13 13:46:47 -0700944 }
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700945 }
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800946 {
Ian Rogers719d1a32014-03-06 12:13:39 -0800947 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800948 for (verifier::MethodVerifier* verifier : method_verifiers_) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800949 verifier->VisitRoots(callback, arg);
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800950 }
951 }
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100952 if (preinitialization_transaction_ != nullptr) {
953 preinitialization_transaction_->VisitRoots(callback, arg);
Mathieu Chartier893263b2014-03-04 11:07:42 -0800954 }
Mathieu Chartier3b05e9b2014-03-25 09:29:43 -0700955 instrumentation_.VisitRoots(callback, arg);
Brian Carlstrome24fa612011-09-29 00:53:55 -0700956}
957
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800958void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) {
959 thread_list_->VisitRoots(callback, arg);
960 VisitNonThreadRoots(callback, arg);
Mathieu Chartier858f1c52012-10-17 17:45:55 -0700961}
962
Mathieu Chartier893263b2014-03-04 11:07:42 -0800963void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
Mathieu Chartier83c8ee02014-01-28 14:50:23 -0800964 VisitNonConcurrentRoots(callback, arg);
Mathieu Chartier119c6bd2014-05-09 14:11:47 -0700965 VisitConcurrentRoots(callback, arg, flags);
Mathieu Chartier9ebae1f2012-10-15 17:38:16 -0700966}
967
Jeff Hao88474b42013-10-23 16:24:40 -0700968mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) {
969 Thread* self = Thread::Current();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700970 StackHandleScope<1> hs(self);
971 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable(
972 hs.NewHandle(cl->AllocArtMethodArray(self, 64)));
Jeff Hao88474b42013-10-23 16:24:40 -0700973 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod();
Mathieu Chartier590fee92013-09-13 13:46:47 -0700974 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) {
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100975 imtable->Set<false>(i, imt_conflict_method);
Jeff Hao88474b42013-10-23 16:24:40 -0700976 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700977 return imtable.Get();
Jeff Hao88474b42013-10-23 16:24:40 -0700978}
979
980mirror::ArtMethod* Runtime::CreateImtConflictMethod() {
Jeff Hao88474b42013-10-23 16:24:40 -0700981 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -0800982 Runtime* runtime = Runtime::Current();
983 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700984 StackHandleScope<1> hs(self);
985 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -0700986 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogersef7d42f2014-01-06 12:55:46 -0800987 // TODO: use a special method for imt conflict method saves.
Jeff Hao88474b42013-10-23 16:24:40 -0700988 method->SetDexMethodIndex(DexFile::kDexNoIndex);
989 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -0800990 if (runtime->IsCompiler()) {
991 method->SetEntryPointFromPortableCompiledCode(nullptr);
992 method->SetEntryPointFromQuickCompiledCode(nullptr);
993 } else {
994 method->SetEntryPointFromPortableCompiledCode(GetPortableImtConflictTrampoline(class_linker));
995 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictTrampoline(class_linker));
996 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700997 return method.Get();
Jeff Hao88474b42013-10-23 16:24:40 -0700998}
999
Brian Carlstromea46f952013-07-30 01:26:50 -07001000mirror::ArtMethod* Runtime::CreateResolutionMethod() {
Ian Rogers50b35e22012-10-04 10:09:15 -07001001 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -08001002 Runtime* runtime = Runtime::Current();
1003 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001004 StackHandleScope<1> hs(self);
1005 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -07001006 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers19846512012-02-24 11:42:47 -08001007 // TODO: use a special method for resolution method saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -07001008 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Jeff Hao58df3272013-04-22 15:28:53 -07001009 // When compiling, the code pointer will get set later when the image is loaded.
Ian Rogersef7d42f2014-01-06 12:55:46 -08001010 if (runtime->IsCompiler()) {
1011 method->SetEntryPointFromPortableCompiledCode(nullptr);
1012 method->SetEntryPointFromQuickCompiledCode(nullptr);
1013 } else {
1014 method->SetEntryPointFromPortableCompiledCode(GetPortableResolutionTrampoline(class_linker));
1015 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionTrampoline(class_linker));
1016 }
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001017 return method.Get();
Ian Rogers19846512012-02-24 11:42:47 -08001018}
1019
Vladimir Marko7624d252014-05-02 14:40:15 +01001020mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) {
Ian Rogers50b35e22012-10-04 10:09:15 -07001021 Thread* self = Thread::Current();
Ian Rogersef7d42f2014-01-06 12:55:46 -08001022 Runtime* runtime = Runtime::Current();
1023 ClassLinker* class_linker = runtime->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001024 StackHandleScope<1> hs(self);
1025 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
Mathieu Chartier590fee92013-09-13 13:46:47 -07001026 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
Ian Rogers6d4d9fc2011-11-30 16:24:48 -08001027 // TODO: use a special method for callee saves
Ian Rogers8b2c0b92013-09-19 02:56:49 -07001028 method->SetDexMethodIndex(DexFile::kDexNoIndex);
Ian Rogersef7d42f2014-01-06 12:55:46 -08001029 method->SetEntryPointFromPortableCompiledCode(nullptr);
1030 method->SetEntryPointFromQuickCompiledCode(nullptr);
Vladimir Marko7624d252014-05-02 14:40:15 +01001031 DCHECK_NE(instruction_set_, kNone);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -07001032 return method.Get();
Ian Rogersff1ed472011-09-20 13:46:24 -07001033}
1034
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001035void Runtime::DisallowNewSystemWeaks() {
1036 monitor_list_->DisallowNewMonitors();
1037 intern_table_->DisallowNewInterns();
1038 java_vm_->DisallowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001039 Dbg::DisallowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001040}
1041
1042void Runtime::AllowNewSystemWeaks() {
1043 monitor_list_->AllowNewMonitors();
1044 intern_table_->AllowNewInterns();
1045 java_vm_->AllowNewWeakGlobals();
Mathieu Chartier412c7fc2014-02-07 12:18:39 -08001046 Dbg::AllowNewObjectRegistryObjects();
Mathieu Chartierc11d9b82013-09-19 10:01:59 -07001047}
1048
Vladimir Marko7624d252014-05-02 14:40:15 +01001049void Runtime::SetInstructionSet(InstructionSet instruction_set) {
1050 instruction_set_ = instruction_set;
1051 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) {
1052 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1053 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1054 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type);
1055 }
1056 } else if (instruction_set_ == kMips) {
1057 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1058 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1059 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type);
1060 }
1061 } else if (instruction_set_ == kX86) {
1062 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1063 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1064 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type);
1065 }
1066 } else if (instruction_set_ == kX86_64) {
1067 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1068 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1069 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type);
1070 }
1071 } else if (instruction_set_ == kArm64) {
1072 for (int i = 0; i != kLastCalleeSaveType; ++i) {
1073 CalleeSaveType type = static_cast<CalleeSaveType>(i);
1074 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type);
1075 }
1076 } else {
1077 UNIMPLEMENTED(FATAL) << instruction_set_;
1078 }
1079}
1080
Brian Carlstromea46f952013-07-30 01:26:50 -07001081void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001082 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
Elliott Hughes225f5a12012-06-11 11:23:48 -07001083 callee_save_methods_[type] = method;
Brian Carlstrome24fa612011-09-29 00:53:55 -07001084}
1085
Ian Rogers00f7d0e2012-07-19 15:28:27 -07001086const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001087 if (class_loader == NULL) {
1088 return GetClassLinker()->GetBootClassPath();
1089 }
1090 CHECK(UseCompileTimeClassPath());
1091 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader);
1092 CHECK(it != compile_time_class_paths_.end());
1093 return it->second;
1094}
1095
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001096void Runtime::SetCompileTimeClassPath(jobject class_loader,
1097 std::vector<const DexFile*>& class_path) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001098 CHECK(!IsStarted());
1099 use_compile_time_class_path_ = true;
Elliott Hughesa0e18062012-04-13 15:59:59 -07001100 compile_time_class_paths_.Put(class_loader, class_path);
Elliott Hughesb3bd5f02012-03-08 21:05:27 -08001101}
1102
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001103void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) {
1104 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001105 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001106 method_verifiers_.insert(verifier);
1107}
1108
1109void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) {
1110 DCHECK(verifier != nullptr);
Ian Rogers719d1a32014-03-06 12:13:39 -08001111 MutexLock mu(Thread::Current(), method_verifier_lock_);
Mathieu Chartierc528dba2013-11-26 12:00:11 -08001112 auto it = method_verifiers_.find(verifier);
1113 CHECK(it != method_verifiers_.end());
1114 method_verifiers_.erase(it);
1115}
1116
Calin Juravlec1b643c2014-05-30 23:44:11 +01001117void Runtime::StartProfiler(const char* profile_output_filename) {
1118 profile_output_filename_ = profile_output_filename;
1119 profiler_started_ =
1120 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_);
Dave Allison0aded082013-11-07 13:15:11 -08001121}
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001122
1123// Transaction support.
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001124void Runtime::EnterTransactionMode(Transaction* transaction) {
1125 DCHECK(IsCompiler());
1126 DCHECK(transaction != nullptr);
1127 DCHECK(!IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001128 preinitialization_transaction_ = transaction;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001129}
1130
1131void Runtime::ExitTransactionMode() {
1132 DCHECK(IsCompiler());
1133 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001134 preinitialization_transaction_ = nullptr;
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001135}
1136
1137void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset,
1138 uint32_t value, bool is_volatile) const {
1139 DCHECK(IsCompiler());
1140 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001141 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001142}
1143
1144void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset,
1145 uint64_t value, bool is_volatile) const {
1146 DCHECK(IsCompiler());
1147 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001148 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001149}
1150
1151void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset,
1152 mirror::Object* value, bool is_volatile) const {
1153 DCHECK(IsCompiler());
1154 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001155 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001156}
1157
1158void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const {
1159 DCHECK(IsCompiler());
1160 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001161 preinitialization_transaction_->RecordWriteArray(array, index, value);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001162}
1163
1164void Runtime::RecordStrongStringInsertion(mirror::String* s, uint32_t hash_code) const {
1165 DCHECK(IsCompiler());
1166 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001167 preinitialization_transaction_->RecordStrongStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001168}
1169
1170void Runtime::RecordWeakStringInsertion(mirror::String* s, uint32_t hash_code) const {
1171 DCHECK(IsCompiler());
1172 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001173 preinitialization_transaction_->RecordWeakStringInsertion(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001174}
1175
1176void Runtime::RecordStrongStringRemoval(mirror::String* s, uint32_t hash_code) const {
1177 DCHECK(IsCompiler());
1178 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001179 preinitialization_transaction_->RecordStrongStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001180}
1181
1182void Runtime::RecordWeakStringRemoval(mirror::String* s, uint32_t hash_code) const {
1183 DCHECK(IsCompiler());
1184 DCHECK(IsActiveTransaction());
Sebastien Hertzee1d79a2014-02-21 15:46:30 +01001185 preinitialization_transaction_->RecordWeakStringRemoval(s, hash_code);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +01001186}
Mathieu Chartier15d34022014-02-26 17:16:38 -08001187
1188void Runtime::SetFaultMessage(const std::string& message) {
1189 MutexLock mu(Thread::Current(), fault_message_lock_);
1190 fault_message_ = message;
1191}
Brian Carlstrom491ca9e2014-03-02 18:24:38 -08001192
Ian Rogers8afeb852014-04-02 14:55:49 -07001193void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv)
1194 const {
Ian Rogers9bc54402014-04-17 16:40:01 -07001195 if (GetInstrumentation()->InterpretOnly()) {
1196 argv->push_back("--compiler-filter=interpret-only");
1197 }
1198
Ian Rogers8afeb852014-04-02 14:55:49 -07001199 argv->push_back("--runtime-arg");
1200 std::string checkstr = "-implicit-checks";
1201
1202 int nchecks = 0;
1203 char checksep = ':';
1204
1205 if (!ExplicitNullChecks()) {
1206 checkstr += checksep;
1207 checksep = ',';
1208 checkstr += "null";
1209 ++nchecks;
1210 }
1211 if (!ExplicitSuspendChecks()) {
1212 checkstr += checksep;
1213 checksep = ',';
1214 checkstr += "suspend";
1215 ++nchecks;
1216 }
1217
1218 if (!ExplicitStackOverflowChecks()) {
1219 checkstr += checksep;
1220 checksep = ',';
1221 checkstr += "stack";
1222 ++nchecks;
1223 }
1224
1225 if (nchecks == 0) {
1226 checkstr += ":none";
1227 }
1228 argv->push_back(checkstr);
1229
1230 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple
1231 // architecture support, dex2oat may be compiled as a different instruction-set than that
1232 // currently being executed.
Ian Rogersb9beb2e2014-05-09 16:57:40 -07001233 std::string instruction_set("--instruction-set=");
1234 instruction_set += GetInstructionSetString(kRuntimeISA);
1235 argv->push_back(instruction_set);
Ian Rogers8afeb852014-04-02 14:55:49 -07001236
1237 std::string features("--instruction-set-features=");
1238 features += GetDefaultInstructionSetFeatures();
1239 argv->push_back(features);
1240}
1241
Dave Allison39c3bfb2014-01-28 18:33:52 -08001242void Runtime::UpdateProfilerState(int state) {
Brian Carlstrom4d466a82014-05-08 19:05:29 -07001243 VLOG(profiler) << "Profiler state updated to " << state;
Dave Allison39c3bfb2014-01-28 18:33:52 -08001244}
Carl Shapiro1fb86202011-06-27 17:43:13 -07001245} // namespace art