runtime.cc revision 69dfe51b684dd9d510dbcb63295fe180f998efde 
1/*
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 */
16
17#include "runtime.h"
18
19// 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#ifdef __linux__
22#include <linux/fs.h>
23#endif
24
25#include <signal.h>
26#include <sys/syscall.h>
27#include <valgrind.h>
28
29#include <cstdio>
30#include <cstdlib>
31#include <limits>
32#include <memory>
33#include <vector>
34#include <fcntl.h>
35
36#include "arch/arm/quick_method_frame_info_arm.h"
37#include "arch/arm/registers_arm.h"
38#include "arch/arm64/quick_method_frame_info_arm64.h"
39#include "arch/arm64/registers_arm64.h"
40#include "arch/mips/quick_method_frame_info_mips.h"
41#include "arch/mips/registers_mips.h"
42#include "arch/x86/quick_method_frame_info_x86.h"
43#include "arch/x86/registers_x86.h"
44#include "arch/x86_64/quick_method_frame_info_x86_64.h"
45#include "arch/x86_64/registers_x86_64.h"
46#include "atomic.h"
47#include "class_linker.h"
48#include "debugger.h"
49#include "fault_handler.h"
50#include "gc/accounting/card_table-inl.h"
51#include "gc/heap.h"
52#include "gc/space/image_space.h"
53#include "gc/space/space.h"
54#include "image.h"
55#include "instrumentation.h"
56#include "intern_table.h"
57#include "jni_internal.h"
58#include "mirror/art_field-inl.h"
59#include "mirror/art_method-inl.h"
60#include "mirror/array.h"
61#include "mirror/class-inl.h"
62#include "mirror/class_loader.h"
63#include "mirror/stack_trace_element.h"
64#include "mirror/throwable.h"
65#include "monitor.h"
66#include "parsed_options.h"
67#include "oat_file.h"
68#include "quick/quick_method_frame_info.h"
69#include "reflection.h"
70#include "ScopedLocalRef.h"
71#include "scoped_thread_state_change.h"
72#include "signal_catcher.h"
73#include "signal_set.h"
74#include "handle_scope-inl.h"
75#include "thread.h"
76#include "thread_list.h"
77#include "trace.h"
78#include "transaction.h"
79#include "profiler.h"
80#include "verifier/method_verifier.h"
81#include "well_known_classes.h"
82
83#include "JniConstants.h"  // Last to avoid LOG redefinition in ics-mr1-plus-art.
84
85#ifdef HAVE_ANDROID_OS
86#include "cutils/properties.h"
87#endif
88
89namespace art {
90
91static constexpr bool kEnableJavaStackTraceHandler = true;
92const char* Runtime::kDefaultInstructionSetFeatures =
93    STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES);
94Runtime* Runtime::instance_ = NULL;
95
96Runtime::Runtime()
97    : pre_allocated_OutOfMemoryError_(nullptr),
98      resolution_method_(nullptr),
99      imt_conflict_method_(nullptr),
100      default_imt_(nullptr),
101      instruction_set_(kNone),
102      compiler_callbacks_(nullptr),
103      is_zygote_(false),
104      is_concurrent_gc_enabled_(true),
105      is_explicit_gc_disabled_(false),
106      default_stack_size_(0),
107      heap_(nullptr),
108      max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation),
109      monitor_list_(nullptr),
110      monitor_pool_(nullptr),
111      thread_list_(nullptr),
112      intern_table_(nullptr),
113      class_linker_(nullptr),
114      signal_catcher_(nullptr),
115      java_vm_(nullptr),
116      fault_message_lock_("Fault message lock"),
117      fault_message_(""),
118      method_verifier_lock_("Method verifiers lock"),
119      threads_being_born_(0),
120      shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
121      shutting_down_(false),
122      shutting_down_started_(false),
123      started_(false),
124      finished_starting_(false),
125      vfprintf_(nullptr),
126      exit_(nullptr),
127      abort_(nullptr),
128      stats_enabled_(false),
129      running_on_valgrind_(RUNNING_ON_VALGRIND > 0),
130      profiler_started_(false),
131      method_trace_(false),
132      method_trace_file_size_(0),
133      instrumentation_(),
134      use_compile_time_class_path_(false),
135      main_thread_group_(nullptr),
136      system_thread_group_(nullptr),
137      system_class_loader_(nullptr),
138      dump_gc_performance_on_shutdown_(false),
139      preinitialization_transaction_(nullptr),
140      null_pointer_handler_(nullptr),
141      suspend_handler_(nullptr),
142      stack_overflow_handler_(nullptr),
143      verify_(false),
144      target_sdk_version_(0),
145      implicit_null_checks_(false),
146      implicit_so_checks_(false),
147      implicit_suspend_checks_(false) {
148  for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
149    callee_save_methods_[i] = nullptr;
150  }
151}
152
153Runtime::~Runtime() {
154  if (method_trace_ && Thread::Current() == nullptr) {
155    // We need a current thread to shutdown method tracing: re-attach it now.
156    JNIEnv* unused_env;
157    if (GetJavaVM()->AttachCurrentThread(&unused_env, nullptr) != JNI_OK) {
158      LOG(ERROR) << "Could not attach current thread before runtime shutdown.";
159    }
160  }
161  if (dump_gc_performance_on_shutdown_) {
162    // This can't be called from the Heap destructor below because it
163    // could call RosAlloc::InspectAll() which needs the thread_list
164    // to be still alive.
165    heap_->DumpGcPerformanceInfo(LOG(INFO));
166  }
167
168  Thread* self = Thread::Current();
169  {
170    MutexLock mu(self, *Locks::runtime_shutdown_lock_);
171    shutting_down_started_ = true;
172    while (threads_being_born_ > 0) {
173      shutdown_cond_->Wait(self);
174    }
175    shutting_down_ = true;
176  }
177  // Shut down background profiler before the runtime exits.
178  if (profiler_started_) {
179    BackgroundMethodSamplingProfiler::Shutdown();
180  }
181
182  Trace::Shutdown();
183
184  // Make sure to let the GC complete if it is running.
185  heap_->WaitForGcToComplete(gc::kGcCauseBackground, self);
186  heap_->DeleteThreadPool();
187
188  // Make sure our internal threads are dead before we start tearing down things they're using.
189  Dbg::StopJdwp();
190  delete signal_catcher_;
191
192  // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
193  delete thread_list_;
194  delete monitor_list_;
195  delete monitor_pool_;
196  delete class_linker_;
197  delete heap_;
198  delete intern_table_;
199  delete java_vm_;
200  Thread::Shutdown();
201  QuasiAtomic::Shutdown();
202  verifier::MethodVerifier::Shutdown();
203  // TODO: acquire a static mutex on Runtime to avoid racing.
204  CHECK(instance_ == nullptr || instance_ == this);
205  instance_ = nullptr;
206
207  delete null_pointer_handler_;
208  delete suspend_handler_;
209  delete stack_overflow_handler_;
210}
211
212struct AbortState {
213  void Dump(std::ostream& os) NO_THREAD_SAFETY_ANALYSIS {
214    if (gAborting > 1) {
215      os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
216      return;
217    }
218    gAborting++;
219    os << "Runtime aborting...\n";
220    if (Runtime::Current() == NULL) {
221      os << "(Runtime does not yet exist!)\n";
222      return;
223    }
224    Thread* self = Thread::Current();
225    if (self == nullptr) {
226      os << "(Aborting thread was not attached to runtime!)\n";
227      DumpKernelStack(os, GetTid(), "  kernel: ", false);
228      DumpNativeStack(os, GetTid(), "  native: ", nullptr);
229    } else {
230      os << "Aborting thread:\n";
231      if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) {
232        DumpThread(os, self);
233      } else {
234        if (Locks::mutator_lock_->SharedTryLock(self)) {
235          DumpThread(os, self);
236          Locks::mutator_lock_->SharedUnlock(self);
237        }
238      }
239    }
240    DumpAllThreads(os, self);
241  }
242
243  void DumpThread(std::ostream& os, Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
244    self->Dump(os);
245    if (self->IsExceptionPending()) {
246      ThrowLocation throw_location;
247      mirror::Throwable* exception = self->GetException(&throw_location);
248      os << "Pending exception " << PrettyTypeOf(exception)
249          << " thrown by '" << throw_location.Dump() << "'\n"
250          << exception->Dump();
251    }
252  }
253
254  void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS {
255    Runtime* runtime = Runtime::Current();
256    if (runtime != nullptr) {
257      ThreadList* thread_list = runtime->GetThreadList();
258      if (thread_list != nullptr) {
259        bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self);
260        bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self);
261        if (!tll_already_held || !ml_already_held) {
262          os << "Dumping all threads without appropriate locks held:"
263              << (!tll_already_held ? " thread list lock" : "")
264              << (!ml_already_held ? " mutator lock" : "")
265              << "\n";
266        }
267        os << "All threads:\n";
268        thread_list->DumpLocked(os);
269      }
270    }
271  }
272};
273
274void Runtime::Abort() {
275  gAborting++;  // set before taking any locks
276
277  // Ensure that we don't have multiple threads trying to abort at once,
278  // which would result in significantly worse diagnostics.
279  MutexLock mu(Thread::Current(), *Locks::abort_lock_);
280
281  // Get any pending output out of the way.
282  fflush(NULL);
283
284  // Many people have difficulty distinguish aborts from crashes,
285  // so be explicit.
286  AbortState state;
287  LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
288
289  // Call the abort hook if we have one.
290  if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
291    LOG(INTERNAL_FATAL) << "Calling abort hook...";
292    Runtime::Current()->abort_();
293    // notreached
294    LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
295  }
296
297#if defined(__GLIBC__)
298  // TODO: we ought to be able to use pthread_kill(3) here (or abort(3),
299  // which POSIX defines in terms of raise(3), which POSIX defines in terms
300  // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through
301  // libpthread, which means the stacks we dump would be useless. Calling
302  // tgkill(2) directly avoids that.
303  syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT);
304  // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM?
305  // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3).
306  exit(1);
307#else
308  abort();
309#endif
310  // notreached
311}
312
313void Runtime::PreZygoteFork() {
314  heap_->PreZygoteFork();
315}
316
317void Runtime::CallExitHook(jint status) {
318  if (exit_ != NULL) {
319    ScopedThreadStateChange tsc(Thread::Current(), kNative);
320    exit_(status);
321    LOG(WARNING) << "Exit hook returned instead of exiting!";
322  }
323}
324
325void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) {
326  GetInternTable()->SweepInternTableWeaks(visitor, arg);
327  GetMonitorList()->SweepMonitorList(visitor, arg);
328  GetJavaVM()->SweepJniWeakGlobals(visitor, arg);
329}
330
331bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) {
332  // TODO: acquire a static mutex on Runtime to avoid racing.
333  if (Runtime::instance_ != NULL) {
334    return false;
335  }
336  InitLogging(NULL);  // Calls Locks::Init() as a side effect.
337  instance_ = new Runtime;
338  if (!instance_->Init(options, ignore_unrecognized)) {
339    delete instance_;
340    instance_ = NULL;
341    return false;
342  }
343  return true;
344}
345
346jobject CreateSystemClassLoader() {
347  if (Runtime::Current()->UseCompileTimeClassPath()) {
348    return NULL;
349  }
350
351  ScopedObjectAccess soa(Thread::Current());
352  ClassLinker* cl = Runtime::Current()->GetClassLinker();
353
354  StackHandleScope<3> hs(soa.Self());
355  Handle<mirror::Class> class_loader_class(
356      hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader)));
357  CHECK(cl->EnsureInitialized(class_loader_class, true, true));
358
359  mirror::ArtMethod* getSystemClassLoader =
360      class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
361  CHECK(getSystemClassLoader != NULL);
362
363  JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr);
364  Handle<mirror::ClassLoader> class_loader(
365      hs.NewHandle(down_cast<mirror::ClassLoader*>(result.GetL())));
366  CHECK(class_loader.Get() != nullptr);
367  JNIEnv* env = soa.Self()->GetJniEnv();
368  ScopedLocalRef<jobject> system_class_loader(env,
369                                              soa.AddLocalReference<jobject>(class_loader.Get()));
370  CHECK(system_class_loader.get() != nullptr);
371
372  soa.Self()->SetClassLoaderOverride(class_loader.Get());
373
374  Handle<mirror::Class> thread_class(
375      hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread)));
376  CHECK(cl->EnsureInitialized(thread_class, true, true));
377
378  mirror::ArtField* contextClassLoader =
379      thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;");
380  CHECK(contextClassLoader != NULL);
381
382  // We can't run in a transaction yet.
383  contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.Get());
384
385  return env->NewGlobalRef(system_class_loader.get());
386}
387
388std::string Runtime::GetCompilerExecutable() const {
389  if (!compiler_executable_.empty()) {
390    return compiler_executable_;
391  }
392  std::string compiler_executable(GetAndroidRoot());
393  compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat");
394  return compiler_executable;
395}
396
397bool Runtime::Start() {
398  VLOG(startup) << "Runtime::Start entering";
399
400  // Restore main thread state to kNative as expected by native code.
401  Thread* self = Thread::Current();
402  self->TransitionFromRunnableToSuspended(kNative);
403
404  started_ = true;
405
406  // InitNativeMethods needs to be after started_ so that the classes
407  // it touches will have methods linked to the oat file if necessary.
408  InitNativeMethods();
409
410  // Initialize well known thread group values that may be accessed threads while attaching.
411  InitThreadGroups(self);
412
413  Thread::FinishStartup();
414
415  if (is_zygote_) {
416    if (!InitZygote()) {
417      return false;
418    }
419  } else {
420    DidForkFromZygote();
421  }
422
423  StartDaemonThreads();
424
425  system_class_loader_ = CreateSystemClassLoader();
426
427  {
428    ScopedObjectAccess soa(self);
429    self->GetJniEnv()->locals.AssertEmpty();
430  }
431
432  VLOG(startup) << "Runtime::Start exiting";
433  finished_starting_ = true;
434
435  if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) {
436    // User has asked for a profile using -Xenable-profiler.
437    // Create the profile file if it doesn't exist.
438    int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660);
439    if (fd >= 0) {
440      close(fd);
441    } else if (errno != EEXIST) {
442      LOG(INFO) << "Failed to access the profile file. Profiler disabled.";
443      return true;
444    }
445    StartProfiler(profile_output_filename_.c_str());
446  }
447
448  return true;
449}
450
451void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) {
452  DCHECK_GT(threads_being_born_, 0U);
453  threads_being_born_--;
454  if (shutting_down_started_ && threads_being_born_ == 0) {
455    shutdown_cond_->Broadcast(Thread::Current());
456  }
457}
458
459// Do zygote-mode-only initialization.
460bool Runtime::InitZygote() {
461#ifdef __linux__
462  // zygote goes into its own process group
463  setpgid(0, 0);
464
465  // See storage config details at http://source.android.com/tech/storage/
466  // Create private mount namespace shared by all children
467  if (unshare(CLONE_NEWNS) == -1) {
468    PLOG(WARNING) << "Failed to unshare()";
469    return false;
470  }
471
472  // Mark rootfs as being a slave so that changes from default
473  // namespace only flow into our children.
474  if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) {
475    PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE";
476    return false;
477  }
478
479  // Create a staging tmpfs that is shared by our children; they will
480  // bind mount storage into their respective private namespaces, which
481  // are isolated from each other.
482  const char* target_base = getenv("EMULATED_STORAGE_TARGET");
483  if (target_base != NULL) {
484    if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV,
485              "uid=0,gid=1028,mode=0751") == -1) {
486      LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
487      return false;
488    }
489  }
490
491  return true;
492#else
493  UNIMPLEMENTED(FATAL);
494  return false;
495#endif
496}
497
498void Runtime::DidForkFromZygote() {
499  is_zygote_ = false;
500
501  // Create the thread pool.
502  heap_->CreateThreadPool();
503
504  StartSignalCatcher();
505
506  // Start the JDWP thread. If the command-line debugger flags specified "suspend=y",
507  // this will pause the runtime, so we probably want this to come last.
508  Dbg::StartJdwp();
509}
510
511void Runtime::StartSignalCatcher() {
512  if (!is_zygote_) {
513    signal_catcher_ = new SignalCatcher(stack_trace_file_);
514  }
515}
516
517bool Runtime::IsShuttingDown(Thread* self) {
518  MutexLock mu(self, *Locks::runtime_shutdown_lock_);
519  return IsShuttingDownLocked();
520}
521
522void Runtime::StartDaemonThreads() {
523  VLOG(startup) << "Runtime::StartDaemonThreads entering";
524
525  Thread* self = Thread::Current();
526
527  // Must be in the kNative state for calling native methods.
528  CHECK_EQ(self->GetState(), kNative);
529
530  JNIEnv* env = self->GetJniEnv();
531  env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons,
532                            WellKnownClasses::java_lang_Daemons_start);
533  if (env->ExceptionCheck()) {
534    env->ExceptionDescribe();
535    LOG(FATAL) << "Error starting java.lang.Daemons";
536  }
537
538  VLOG(startup) << "Runtime::StartDaemonThreads exiting";
539}
540
541bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) {
542  CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
543
544  std::unique_ptr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
545  if (options.get() == NULL) {
546    LOG(ERROR) << "Failed to parse options";
547    return false;
548  }
549  VLOG(startup) << "Runtime::Init -verbose:startup enabled";
550
551  QuasiAtomic::Startup();
552
553  Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
554
555  boot_class_path_string_ = options->boot_class_path_string_;
556  class_path_string_ = options->class_path_string_;
557  properties_ = options->properties_;
558
559  compiler_callbacks_ = options->compiler_callbacks_;
560  is_zygote_ = options->is_zygote_;
561  is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_;
562
563  vfprintf_ = options->hook_vfprintf_;
564  exit_ = options->hook_exit_;
565  abort_ = options->hook_abort_;
566
567  default_stack_size_ = options->stack_size_;
568  stack_trace_file_ = options->stack_trace_file_;
569
570  compiler_executable_ = options->compiler_executable_;
571  compiler_options_ = options->compiler_options_;
572  image_compiler_options_ = options->image_compiler_options_;
573
574  max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_;
575
576  monitor_list_ = new MonitorList;
577  monitor_pool_ = MonitorPool::Create();
578  thread_list_ = new ThreadList;
579  intern_table_ = new InternTable;
580
581  verify_ = options->verify_;
582
583  if (options->interpreter_only_) {
584    GetInstrumentation()->ForceInterpretOnly();
585  }
586
587  heap_ = new gc::Heap(options->heap_initial_size_,
588                       options->heap_growth_limit_,
589                       options->heap_min_free_,
590                       options->heap_max_free_,
591                       options->heap_target_utilization_,
592                       options->foreground_heap_growth_multiplier_,
593                       options->heap_maximum_size_,
594                       options->image_,
595                       options->image_isa_,
596                       options->collector_type_,
597                       options->background_collector_type_,
598                       options->parallel_gc_threads_,
599                       options->conc_gc_threads_,
600                       options->low_memory_mode_,
601                       options->long_pause_log_threshold_,
602                       options->long_gc_log_threshold_,
603                       options->ignore_max_footprint_,
604                       options->use_tlab_,
605                       options->verify_pre_gc_heap_,
606                       options->verify_pre_sweeping_heap_,
607                       options->verify_post_gc_heap_,
608                       options->verify_pre_gc_rosalloc_,
609                       options->verify_pre_sweeping_rosalloc_,
610                       options->verify_post_gc_rosalloc_,
611                       options->use_homogeneous_space_compaction_for_oom_,
612                       options->min_interval_homogeneous_space_compaction_by_oom_);
613
614  dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_;
615
616  BlockSignals();
617  InitPlatformSignalHandlers();
618
619  // Change the implicit checks flags based on runtime architecture.
620  switch (kRuntimeISA) {
621    case kArm:
622    case kThumb2:
623    case kX86:
624      implicit_null_checks_ = true;
625      implicit_so_checks_ = true;
626      break;
627    default:
628      // Keep the defaults.
629      break;
630  }
631
632  if (!options->interpreter_only_ &&
633    (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_)) {
634    fault_manager.Init();
635
636    // These need to be in a specific order.  The null point check handler must be
637    // after the suspend check and stack overflow check handlers.
638    if (implicit_suspend_checks_) {
639      suspend_handler_ = new SuspensionHandler(&fault_manager);
640    }
641
642    if (implicit_so_checks_) {
643      stack_overflow_handler_ = new StackOverflowHandler(&fault_manager);
644    }
645
646    if (implicit_null_checks_) {
647      null_pointer_handler_ = new NullPointerHandler(&fault_manager);
648    }
649
650    if (kEnableJavaStackTraceHandler) {
651      new JavaStackTraceHandler(&fault_manager);
652    }
653  }
654
655  java_vm_ = new JavaVMExt(this, options.get());
656
657  Thread::Startup();
658
659  // ClassLinker needs an attached thread, but we can't fully attach a thread without creating
660  // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main
661  // thread, we do not get a java peer.
662  Thread* self = Thread::Attach("main", false, NULL, false);
663  CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId);
664  CHECK(self != NULL);
665
666  // Set us to runnable so tools using a runtime can allocate and GC by default
667  self->TransitionFromSuspendedToRunnable();
668
669  // Now we're attached, we can take the heap locks and validate the heap.
670  GetHeap()->EnableObjectValidation();
671
672  CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U);
673  class_linker_ = new ClassLinker(intern_table_);
674  if (GetHeap()->HasImageSpace()) {
675    class_linker_->InitFromImage();
676    if (kIsDebugBuild) {
677      GetHeap()->GetImageSpace()->VerifyImageAllocations();
678    }
679  } else {
680    CHECK(options->boot_class_path_ != NULL);
681    CHECK_NE(options->boot_class_path_->size(), 0U);
682    class_linker_->InitFromCompiler(*options->boot_class_path_);
683  }
684  CHECK(class_linker_ != NULL);
685  verifier::MethodVerifier::Init();
686
687  method_trace_ = options->method_trace_;
688  method_trace_file_ = options->method_trace_file_;
689  method_trace_file_size_ = options->method_trace_file_size_;
690
691  profile_output_filename_ = options->profile_output_filename_;
692  profiler_options_ = options->profiler_options_;
693
694  // TODO: move this to just be an Trace::Start argument
695  Trace::SetDefaultClockSource(options->profile_clock_source_);
696
697  if (options->method_trace_) {
698    ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart);
699    Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0,
700                 false, false, 0);
701  }
702
703  // Pre-allocate an OutOfMemoryError for the double-OOME case.
704  self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;",
705                          "OutOfMemoryError thrown while trying to throw OutOfMemoryError; "
706                          "no stack available");
707  pre_allocated_OutOfMemoryError_ = self->GetException(NULL);
708  self->ClearException();
709
710  VLOG(startup) << "Runtime::Init exiting";
711  return true;
712}
713
714void Runtime::InitNativeMethods() {
715  VLOG(startup) << "Runtime::InitNativeMethods entering";
716  Thread* self = Thread::Current();
717  JNIEnv* env = self->GetJniEnv();
718
719  // Must be in the kNative state for calling native methods (JNI_OnLoad code).
720  CHECK_EQ(self->GetState(), kNative);
721
722  // First set up JniConstants, which is used by both the runtime's built-in native
723  // methods and libcore.
724  JniConstants::init(env);
725  WellKnownClasses::Init(env);
726
727  // Then set up the native methods provided by the runtime itself.
728  RegisterRuntimeNativeMethods(env);
729
730  // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad.
731  // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's
732  // the library that implements System.loadLibrary!
733  {
734    std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
735    std::string reason;
736    self->TransitionFromSuspendedToRunnable();
737    StackHandleScope<1> hs(self);
738    auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr));
739    if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) {
740      LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
741    }
742    self->TransitionFromRunnableToSuspended(kNative);
743  }
744
745  // Initialize well known classes that may invoke runtime native methods.
746  WellKnownClasses::LateInit(env);
747
748  VLOG(startup) << "Runtime::InitNativeMethods exiting";
749}
750
751void Runtime::InitThreadGroups(Thread* self) {
752  JNIEnvExt* env = self->GetJniEnv();
753  ScopedJniEnvLocalRefState env_state(env);
754  main_thread_group_ =
755      env->NewGlobalRef(env->GetStaticObjectField(
756          WellKnownClasses::java_lang_ThreadGroup,
757          WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
758  CHECK(main_thread_group_ != NULL || IsCompiler());
759  system_thread_group_ =
760      env->NewGlobalRef(env->GetStaticObjectField(
761          WellKnownClasses::java_lang_ThreadGroup,
762          WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
763  CHECK(system_thread_group_ != NULL || IsCompiler());
764}
765
766jobject Runtime::GetMainThreadGroup() const {
767  CHECK(main_thread_group_ != NULL || IsCompiler());
768  return main_thread_group_;
769}
770
771jobject Runtime::GetSystemThreadGroup() const {
772  CHECK(system_thread_group_ != NULL || IsCompiler());
773  return system_thread_group_;
774}
775
776jobject Runtime::GetSystemClassLoader() const {
777  CHECK(system_class_loader_ != NULL || IsCompiler());
778  return system_class_loader_;
779}
780
781void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
782#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
783  // Register Throwable first so that registration of other native methods can throw exceptions
784  REGISTER(register_java_lang_Throwable);
785  REGISTER(register_dalvik_system_DexFile);
786  REGISTER(register_dalvik_system_VMDebug);
787  REGISTER(register_dalvik_system_VMRuntime);
788  REGISTER(register_dalvik_system_VMStack);
789  REGISTER(register_dalvik_system_ZygoteHooks);
790  REGISTER(register_java_lang_Class);
791  REGISTER(register_java_lang_DexCache);
792  REGISTER(register_java_lang_Object);
793  REGISTER(register_java_lang_Runtime);
794  REGISTER(register_java_lang_String);
795  REGISTER(register_java_lang_System);
796  REGISTER(register_java_lang_Thread);
797  REGISTER(register_java_lang_VMClassLoader);
798  REGISTER(register_java_lang_ref_Reference);
799  REGISTER(register_java_lang_reflect_Array);
800  REGISTER(register_java_lang_reflect_Constructor);
801  REGISTER(register_java_lang_reflect_Field);
802  REGISTER(register_java_lang_reflect_Method);
803  REGISTER(register_java_lang_reflect_Proxy);
804  REGISTER(register_java_util_concurrent_atomic_AtomicLong);
805  REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
806  REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
807  REGISTER(register_sun_misc_Unsafe);
808#undef REGISTER
809}
810
811void Runtime::DumpForSigQuit(std::ostream& os) {
812  GetClassLinker()->DumpForSigQuit(os);
813  GetInternTable()->DumpForSigQuit(os);
814  GetJavaVM()->DumpForSigQuit(os);
815  GetHeap()->DumpForSigQuit(os);
816  os << "\n";
817
818  thread_list_->DumpForSigQuit(os);
819  BaseMutex::DumpAll(os);
820}
821
822void Runtime::DumpLockHolders(std::ostream& os) {
823  uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
824  pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
825  pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
826  pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
827  if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
828    os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
829       << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n"
830       << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n"
831       << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n";
832  }
833}
834
835void Runtime::SetStatsEnabled(bool new_state) {
836  if (new_state == true) {
837    GetStats()->Clear(~0);
838    // TODO: wouldn't it make more sense to clear _all_ threads' stats?
839    Thread::Current()->GetStats()->Clear(~0);
840    GetInstrumentation()->InstrumentQuickAllocEntryPoints();
841  } else {
842    GetInstrumentation()->UninstrumentQuickAllocEntryPoints();
843  }
844  stats_enabled_ = new_state;
845}
846
847void Runtime::ResetStats(int kinds) {
848  GetStats()->Clear(kinds & 0xffff);
849  // TODO: wouldn't it make more sense to clear _all_ threads' stats?
850  Thread::Current()->GetStats()->Clear(kinds >> 16);
851}
852
853int32_t Runtime::GetStat(int kind) {
854  RuntimeStats* stats;
855  if (kind < (1<<16)) {
856    stats = GetStats();
857  } else {
858    stats = Thread::Current()->GetStats();
859    kind >>= 16;
860  }
861  switch (kind) {
862  case KIND_ALLOCATED_OBJECTS:
863    return stats->allocated_objects;
864  case KIND_ALLOCATED_BYTES:
865    return stats->allocated_bytes;
866  case KIND_FREED_OBJECTS:
867    return stats->freed_objects;
868  case KIND_FREED_BYTES:
869    return stats->freed_bytes;
870  case KIND_GC_INVOCATIONS:
871    return stats->gc_for_alloc_count;
872  case KIND_CLASS_INIT_COUNT:
873    return stats->class_init_count;
874  case KIND_CLASS_INIT_TIME:
875    // Convert ns to us, reduce to 32 bits.
876    return static_cast<int>(stats->class_init_time_ns / 1000);
877  case KIND_EXT_ALLOCATED_OBJECTS:
878  case KIND_EXT_ALLOCATED_BYTES:
879  case KIND_EXT_FREED_OBJECTS:
880  case KIND_EXT_FREED_BYTES:
881    return 0;  // backward compatibility
882  default:
883    LOG(FATAL) << "Unknown statistic " << kind;
884    return -1;  // unreachable
885  }
886}
887
888void Runtime::BlockSignals() {
889  SignalSet signals;
890  signals.Add(SIGPIPE);
891  // SIGQUIT is used to dump the runtime's state (including stack traces).
892  signals.Add(SIGQUIT);
893  // SIGUSR1 is used to initiate a GC.
894  signals.Add(SIGUSR1);
895  signals.Block();
896}
897
898bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group,
899                                  bool create_peer) {
900  bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL;
901  if (thread_name == NULL) {
902    LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
903  }
904  return success;
905}
906
907void Runtime::DetachCurrentThread() {
908  Thread* self = Thread::Current();
909  if (self == NULL) {
910    LOG(FATAL) << "attempting to detach thread that is not attached";
911  }
912  if (self->HasManagedStack()) {
913    LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
914  }
915  thread_list_->Unregister(self);
916}
917
918mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() {
919  mirror::Throwable* oome = ReadBarrier::BarrierForRoot<mirror::Throwable, kWithReadBarrier>(
920      &pre_allocated_OutOfMemoryError_);
921  if (oome == NULL) {
922    LOG(ERROR) << "Failed to return pre-allocated OOME";
923  }
924  return oome;
925}
926
927void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) {
928  // Visit the classes held as static in mirror classes, these can be visited concurrently and only
929  // need to be visited once per GC since they never change.
930  mirror::ArtField::VisitRoots(callback, arg);
931  mirror::ArtMethod::VisitRoots(callback, arg);
932  mirror::Class::VisitRoots(callback, arg);
933  mirror::Reference::VisitRoots(callback, arg);
934  mirror::StackTraceElement::VisitRoots(callback, arg);
935  mirror::String::VisitRoots(callback, arg);
936  mirror::Throwable::VisitRoots(callback, arg);
937  // Visit all the primitive array types classes.
938  mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg);   // BooleanArray
939  mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg);    // ByteArray
940  mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg);  // CharArray
941  mirror::PrimitiveArray<double>::VisitRoots(callback, arg);    // DoubleArray
942  mirror::PrimitiveArray<float>::VisitRoots(callback, arg);     // FloatArray
943  mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg);   // IntArray
944  mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg);   // LongArray
945  mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg);   // ShortArray
946}
947
948void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
949  intern_table_->VisitRoots(callback, arg, flags);
950  class_linker_->VisitRoots(callback, arg, flags);
951  if ((flags & kVisitRootFlagNewRoots) == 0) {
952    // Guaranteed to have no new roots in the constant roots.
953    VisitConstantRoots(callback, arg);
954  }
955}
956
957void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) {
958  java_vm_->VisitRoots(callback, arg);
959  if (pre_allocated_OutOfMemoryError_ != nullptr) {
960    callback(reinterpret_cast<mirror::Object**>(&pre_allocated_OutOfMemoryError_), arg, 0,
961             kRootVMInternal);
962    DCHECK(pre_allocated_OutOfMemoryError_ != nullptr);
963  }
964  callback(reinterpret_cast<mirror::Object**>(&resolution_method_), arg, 0, kRootVMInternal);
965  DCHECK(resolution_method_ != nullptr);
966  if (HasImtConflictMethod()) {
967    callback(reinterpret_cast<mirror::Object**>(&imt_conflict_method_), arg, 0, kRootVMInternal);
968  }
969  if (HasDefaultImt()) {
970    callback(reinterpret_cast<mirror::Object**>(&default_imt_), arg, 0, kRootVMInternal);
971  }
972  for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
973    if (callee_save_methods_[i] != nullptr) {
974      callback(reinterpret_cast<mirror::Object**>(&callee_save_methods_[i]), arg, 0,
975               kRootVMInternal);
976    }
977  }
978  {
979    MutexLock mu(Thread::Current(), method_verifier_lock_);
980    for (verifier::MethodVerifier* verifier : method_verifiers_) {
981      verifier->VisitRoots(callback, arg);
982    }
983  }
984  if (preinitialization_transaction_ != nullptr) {
985    preinitialization_transaction_->VisitRoots(callback, arg);
986  }
987  instrumentation_.VisitRoots(callback, arg);
988}
989
990void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) {
991  thread_list_->VisitRoots(callback, arg);
992  VisitNonThreadRoots(callback, arg);
993}
994
995void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
996  VisitNonConcurrentRoots(callback, arg);
997  VisitConcurrentRoots(callback, arg, flags);
998}
999
1000mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) {
1001  Thread* self = Thread::Current();
1002  StackHandleScope<1> hs(self);
1003  Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable(
1004      hs.NewHandle(cl->AllocArtMethodArray(self, 64)));
1005  mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod();
1006  for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) {
1007    imtable->Set<false>(i, imt_conflict_method);
1008  }
1009  return imtable.Get();
1010}
1011
1012mirror::ArtMethod* Runtime::CreateImtConflictMethod() {
1013  Thread* self = Thread::Current();
1014  Runtime* runtime = Runtime::Current();
1015  ClassLinker* class_linker = runtime->GetClassLinker();
1016  StackHandleScope<1> hs(self);
1017  Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
1018  method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
1019  // TODO: use a special method for imt conflict method saves.
1020  method->SetDexMethodIndex(DexFile::kDexNoIndex);
1021  // When compiling, the code pointer will get set later when the image is loaded.
1022  if (runtime->IsCompiler()) {
1023    method->SetEntryPointFromPortableCompiledCode(nullptr);
1024    method->SetEntryPointFromQuickCompiledCode(nullptr);
1025  } else {
1026    method->SetEntryPointFromPortableCompiledCode(class_linker->GetPortableImtConflictTrampoline());
1027    method->SetEntryPointFromQuickCompiledCode(class_linker->GetQuickImtConflictTrampoline());
1028  }
1029  return method.Get();
1030}
1031
1032mirror::ArtMethod* Runtime::CreateResolutionMethod() {
1033  Thread* self = Thread::Current();
1034  Runtime* runtime = Runtime::Current();
1035  ClassLinker* class_linker = runtime->GetClassLinker();
1036  StackHandleScope<1> hs(self);
1037  Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
1038  method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
1039  // TODO: use a special method for resolution method saves
1040  method->SetDexMethodIndex(DexFile::kDexNoIndex);
1041  // When compiling, the code pointer will get set later when the image is loaded.
1042  if (runtime->IsCompiler()) {
1043    method->SetEntryPointFromPortableCompiledCode(nullptr);
1044    method->SetEntryPointFromQuickCompiledCode(nullptr);
1045  } else {
1046    method->SetEntryPointFromPortableCompiledCode(class_linker->GetPortableResolutionTrampoline());
1047    method->SetEntryPointFromQuickCompiledCode(class_linker->GetQuickResolutionTrampoline());
1048  }
1049  return method.Get();
1050}
1051
1052mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) {
1053  Thread* self = Thread::Current();
1054  Runtime* runtime = Runtime::Current();
1055  ClassLinker* class_linker = runtime->GetClassLinker();
1056  StackHandleScope<1> hs(self);
1057  Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
1058  method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
1059  // TODO: use a special method for callee saves
1060  method->SetDexMethodIndex(DexFile::kDexNoIndex);
1061  method->SetEntryPointFromPortableCompiledCode(nullptr);
1062  method->SetEntryPointFromQuickCompiledCode(nullptr);
1063  DCHECK_NE(instruction_set_, kNone);
1064  return method.Get();
1065}
1066
1067void Runtime::DisallowNewSystemWeaks() {
1068  monitor_list_->DisallowNewMonitors();
1069  intern_table_->DisallowNewInterns();
1070  java_vm_->DisallowNewWeakGlobals();
1071}
1072
1073void Runtime::AllowNewSystemWeaks() {
1074  monitor_list_->AllowNewMonitors();
1075  intern_table_->AllowNewInterns();
1076  java_vm_->AllowNewWeakGlobals();
1077}
1078
1079void Runtime::SetInstructionSet(InstructionSet instruction_set) {
1080  instruction_set_ = instruction_set;
1081  if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) {
1082    for (int i = 0; i != kLastCalleeSaveType; ++i) {
1083      CalleeSaveType type = static_cast<CalleeSaveType>(i);
1084      callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type);
1085    }
1086  } else if (instruction_set_ == kMips) {
1087    for (int i = 0; i != kLastCalleeSaveType; ++i) {
1088      CalleeSaveType type = static_cast<CalleeSaveType>(i);
1089      callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type);
1090    }
1091  } else if (instruction_set_ == kX86) {
1092    for (int i = 0; i != kLastCalleeSaveType; ++i) {
1093      CalleeSaveType type = static_cast<CalleeSaveType>(i);
1094      callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type);
1095    }
1096  } else if (instruction_set_ == kX86_64) {
1097    for (int i = 0; i != kLastCalleeSaveType; ++i) {
1098      CalleeSaveType type = static_cast<CalleeSaveType>(i);
1099      callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type);
1100    }
1101  } else if (instruction_set_ == kArm64) {
1102    for (int i = 0; i != kLastCalleeSaveType; ++i) {
1103      CalleeSaveType type = static_cast<CalleeSaveType>(i);
1104      callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type);
1105    }
1106  } else {
1107    UNIMPLEMENTED(FATAL) << instruction_set_;
1108  }
1109}
1110
1111void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
1112  DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
1113  callee_save_methods_[type] = method;
1114}
1115
1116const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
1117  if (class_loader == NULL) {
1118    return GetClassLinker()->GetBootClassPath();
1119  }
1120  CHECK(UseCompileTimeClassPath());
1121  CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader);
1122  CHECK(it != compile_time_class_paths_.end());
1123  return it->second;
1124}
1125
1126void Runtime::SetCompileTimeClassPath(jobject class_loader,
1127                                      std::vector<const DexFile*>& class_path) {
1128  CHECK(!IsStarted());
1129  use_compile_time_class_path_ = true;
1130  compile_time_class_paths_.Put(class_loader, class_path);
1131}
1132
1133void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) {
1134  DCHECK(verifier != nullptr);
1135  MutexLock mu(Thread::Current(), method_verifier_lock_);
1136  method_verifiers_.insert(verifier);
1137}
1138
1139void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) {
1140  DCHECK(verifier != nullptr);
1141  MutexLock mu(Thread::Current(), method_verifier_lock_);
1142  auto it = method_verifiers_.find(verifier);
1143  CHECK(it != method_verifiers_.end());
1144  method_verifiers_.erase(it);
1145}
1146
1147void Runtime::StartProfiler(const char* profile_output_filename) {
1148  profile_output_filename_ = profile_output_filename;
1149  profiler_started_ =
1150    BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_);
1151}
1152
1153// Transaction support.
1154void Runtime::EnterTransactionMode(Transaction* transaction) {
1155  DCHECK(IsCompiler());
1156  DCHECK(transaction != nullptr);
1157  DCHECK(!IsActiveTransaction());
1158  preinitialization_transaction_ = transaction;
1159}
1160
1161void Runtime::ExitTransactionMode() {
1162  DCHECK(IsCompiler());
1163  DCHECK(IsActiveTransaction());
1164  preinitialization_transaction_ = nullptr;
1165}
1166
1167void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset,
1168                                 uint32_t value, bool is_volatile) const {
1169  DCHECK(IsCompiler());
1170  DCHECK(IsActiveTransaction());
1171  preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile);
1172}
1173
1174void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset,
1175                                 uint64_t value, bool is_volatile) const {
1176  DCHECK(IsCompiler());
1177  DCHECK(IsActiveTransaction());
1178  preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile);
1179}
1180
1181void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset,
1182                                        mirror::Object* value, bool is_volatile) const {
1183  DCHECK(IsCompiler());
1184  DCHECK(IsActiveTransaction());
1185  preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile);
1186}
1187
1188void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const {
1189  DCHECK(IsCompiler());
1190  DCHECK(IsActiveTransaction());
1191  preinitialization_transaction_->RecordWriteArray(array, index, value);
1192}
1193
1194void Runtime::RecordStrongStringInsertion(mirror::String* s, uint32_t hash_code) const {
1195  DCHECK(IsCompiler());
1196  DCHECK(IsActiveTransaction());
1197  preinitialization_transaction_->RecordStrongStringInsertion(s, hash_code);
1198}
1199
1200void Runtime::RecordWeakStringInsertion(mirror::String* s, uint32_t hash_code) const {
1201  DCHECK(IsCompiler());
1202  DCHECK(IsActiveTransaction());
1203  preinitialization_transaction_->RecordWeakStringInsertion(s, hash_code);
1204}
1205
1206void Runtime::RecordStrongStringRemoval(mirror::String* s, uint32_t hash_code) const {
1207  DCHECK(IsCompiler());
1208  DCHECK(IsActiveTransaction());
1209  preinitialization_transaction_->RecordStrongStringRemoval(s, hash_code);
1210}
1211
1212void Runtime::RecordWeakStringRemoval(mirror::String* s, uint32_t hash_code) const {
1213  DCHECK(IsCompiler());
1214  DCHECK(IsActiveTransaction());
1215  preinitialization_transaction_->RecordWeakStringRemoval(s, hash_code);
1216}
1217
1218void Runtime::SetFaultMessage(const std::string& message) {
1219  MutexLock mu(Thread::Current(), fault_message_lock_);
1220  fault_message_ = message;
1221}
1222
1223void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv)
1224    const {
1225  if (GetInstrumentation()->InterpretOnly()) {
1226    argv->push_back("--compiler-filter=interpret-only");
1227  }
1228
1229  // Make the dex2oat instruction set match that of the launching runtime. If we have multiple
1230  // architecture support, dex2oat may be compiled as a different instruction-set than that
1231  // currently being executed.
1232  std::string instruction_set("--instruction-set=");
1233  instruction_set += GetInstructionSetString(kRuntimeISA);
1234  argv->push_back(instruction_set);
1235
1236  std::string features("--instruction-set-features=");
1237  features += GetDefaultInstructionSetFeatures();
1238  argv->push_back(features);
1239}
1240
1241void Runtime::UpdateProfilerState(int state) {
1242  VLOG(profiler) << "Profiler state updated to " << state;
1243}
1244}  // namespace art
1245