runtime.cc revision 576ca0cd692c0b6ae70e776de91015b8ff000a08 
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#include <linux/fs.h>
22
23#include <signal.h>
24#include <sys/syscall.h>
25#include <valgrind.h>
26
27#include <cstdio>
28#include <cstdlib>
29#include <limits>
30#include <memory>
31#include <vector>
32#include <fcntl.h>
33
34#include "arch/arm/quick_method_frame_info_arm.h"
35#include "arch/arm/registers_arm.h"
36#include "arch/arm64/quick_method_frame_info_arm64.h"
37#include "arch/arm64/registers_arm64.h"
38#include "arch/mips/quick_method_frame_info_mips.h"
39#include "arch/mips/registers_mips.h"
40#include "arch/x86/quick_method_frame_info_x86.h"
41#include "arch/x86/registers_x86.h"
42#include "arch/x86_64/quick_method_frame_info_x86_64.h"
43#include "arch/x86_64/registers_x86_64.h"
44#include "atomic.h"
45#include "class_linker.h"
46#include "debugger.h"
47#include "fault_handler.h"
48#include "gc/accounting/card_table-inl.h"
49#include "gc/heap.h"
50#include "gc/space/space.h"
51#include "image.h"
52#include "instrumentation.h"
53#include "intern_table.h"
54#include "jni_internal.h"
55#include "mirror/art_field-inl.h"
56#include "mirror/art_method-inl.h"
57#include "mirror/array.h"
58#include "mirror/class-inl.h"
59#include "mirror/class_loader.h"
60#include "mirror/stack_trace_element.h"
61#include "mirror/throwable.h"
62#include "monitor.h"
63#include "parsed_options.h"
64#include "oat_file.h"
65#include "quick/quick_method_frame_info.h"
66#include "reflection.h"
67#include "ScopedLocalRef.h"
68#include "scoped_thread_state_change.h"
69#include "signal_catcher.h"
70#include "signal_set.h"
71#include "handle_scope-inl.h"
72#include "thread.h"
73#include "thread_list.h"
74#include "trace.h"
75#include "transaction.h"
76#include "profiler.h"
77#include "verifier/method_verifier.h"
78#include "well_known_classes.h"
79
80#include "JniConstants.h"  // Last to avoid LOG redefinition in ics-mr1-plus-art.
81
82#ifdef HAVE_ANDROID_OS
83#include "cutils/properties.h"
84#endif
85
86namespace art {
87
88static constexpr bool kEnableJavaStackTraceHandler = true;
89const char* Runtime::kDefaultInstructionSetFeatures =
90    STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES);
91Runtime* Runtime::instance_ = NULL;
92
93Runtime::Runtime()
94    : pre_allocated_OutOfMemoryError_(nullptr),
95      resolution_method_(nullptr),
96      imt_conflict_method_(nullptr),
97      default_imt_(nullptr),
98      instruction_set_(kNone),
99      compiler_callbacks_(nullptr),
100      is_zygote_(false),
101      is_concurrent_gc_enabled_(true),
102      is_explicit_gc_disabled_(false),
103      default_stack_size_(0),
104      heap_(nullptr),
105      max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation),
106      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),
113      fault_message_lock_("Fault message lock"),
114      fault_message_(""),
115      method_verifier_lock_("Method verifiers lock"),
116      threads_being_born_(0),
117      shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)),
118      shutting_down_(false),
119      shutting_down_started_(false),
120      started_(false),
121      finished_starting_(false),
122      vfprintf_(nullptr),
123      exit_(nullptr),
124      abort_(nullptr),
125      stats_enabled_(false),
126      running_on_valgrind_(RUNNING_ON_VALGRIND > 0),
127      profiler_started_(false),
128      method_trace_(false),
129      method_trace_file_size_(0),
130      instrumentation_(),
131      use_compile_time_class_path_(false),
132      main_thread_group_(nullptr),
133      system_thread_group_(nullptr),
134      system_class_loader_(nullptr),
135      dump_gc_performance_on_shutdown_(false),
136      preinitialization_transaction_(nullptr),
137      null_pointer_handler_(nullptr),
138      suspend_handler_(nullptr),
139      stack_overflow_handler_(nullptr),
140      verify_(false),
141      target_sdk_version_(0) {
142  for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
143    callee_save_methods_[i] = nullptr;
144  }
145}
146
147Runtime::~Runtime() {
148  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
155  Thread* self = Thread::Current();
156  {
157    MutexLock mu(self, *Locks::runtime_shutdown_lock_);
158    shutting_down_started_ = true;
159    while (threads_being_born_ > 0) {
160      shutdown_cond_->Wait(self);
161    }
162    shutting_down_ = true;
163  }
164  // Shut down background profiler before the runtime exits.
165  if (profiler_started_) {
166    BackgroundMethodSamplingProfiler::Shutdown();
167  }
168
169  Trace::Shutdown();
170
171  // Make sure to let the GC complete if it is running.
172  heap_->WaitForGcToComplete(gc::kGcCauseBackground, self);
173  heap_->DeleteThreadPool();
174
175  // Make sure our internal threads are dead before we start tearing down things they're using.
176  Dbg::StopJdwp();
177  delete signal_catcher_;
178
179  // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended.
180  delete thread_list_;
181  delete monitor_list_;
182  delete monitor_pool_;
183  delete class_linker_;
184  delete heap_;
185  delete intern_table_;
186  delete java_vm_;
187  Thread::Shutdown();
188  QuasiAtomic::Shutdown();
189  verifier::MethodVerifier::Shutdown();
190  // TODO: acquire a static mutex on Runtime to avoid racing.
191  CHECK(instance_ == nullptr || instance_ == this);
192  instance_ = nullptr;
193
194  delete null_pointer_handler_;
195  delete suspend_handler_;
196  delete stack_overflow_handler_;
197}
198
199struct AbortState {
200  void Dump(std::ostream& os) NO_THREAD_SAFETY_ANALYSIS {
201    if (gAborting > 1) {
202      os << "Runtime aborting --- recursively, so no thread-specific detail!\n";
203      return;
204    }
205    gAborting++;
206    os << "Runtime aborting...\n";
207    if (Runtime::Current() == NULL) {
208      os << "(Runtime does not yet exist!)\n";
209      return;
210    }
211    Thread* self = Thread::Current();
212    if (self == nullptr) {
213      os << "(Aborting thread was not attached to runtime!)\n";
214      DumpKernelStack(os, GetTid(), "  kernel: ", false);
215      DumpNativeStack(os, GetTid(), "  native: ", nullptr);
216    } else {
217      os << "Aborting thread:\n";
218      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        }
225      }
226    }
227    DumpAllThreads(os, self);
228  }
229
230  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
241  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);
244    if (!tll_already_held || !ml_already_held) {
245      os << "Dumping all threads without appropriate locks held:"
246          << (!tll_already_held ? " thread list lock" : "")
247          << (!ml_already_held ? " mutator lock" : "")
248          << "\n";
249    }
250    os << "All threads:\n";
251    Runtime::Current()->GetThreadList()->DumpLocked(os);
252  }
253};
254
255void Runtime::Abort() {
256  gAborting++;  // set before taking any locks
257
258  // Ensure that we don't have multiple threads trying to abort at once,
259  // which would result in significantly worse diagnostics.
260  MutexLock mu(Thread::Current(), *Locks::abort_lock_);
261
262  // 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.
267  AbortState state;
268  LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
269
270  // Call the abort hook if we have one.
271  if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) {
272    LOG(INTERNAL_FATAL) << "Calling abort hook...";
273    Runtime::Current()->abort_();
274    // notreached
275    LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
276  }
277
278#if defined(__GLIBC__)
279  // 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);
285  // 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).
287  exit(1);
288#else
289  abort();
290#endif
291  // notreached
292}
293
294void Runtime::PreZygoteFork() {
295  heap_->PreZygoteFork();
296}
297
298void Runtime::CallExitHook(jint status) {
299  if (exit_ != NULL) {
300    ScopedThreadStateChange tsc(Thread::Current(), kNative);
301    exit_(status);
302    LOG(WARNING) << "Exit hook returned instead of exiting!";
303  }
304}
305
306void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) {
307  GetInternTable()->SweepInternTableWeaks(visitor, arg);
308  GetMonitorList()->SweepMonitorList(visitor, arg);
309  GetJavaVM()->SweepJniWeakGlobals(visitor, arg);
310  Dbg::UpdateObjectPointers(visitor, arg);
311}
312
313bool Runtime::Create(const Options& options, bool ignore_unrecognized) {
314  // TODO: acquire a static mutex on Runtime to avoid racing.
315  if (Runtime::instance_ != NULL) {
316    return false;
317  }
318  InitLogging(NULL);  // Calls Locks::Init() as a side effect.
319  instance_ = new Runtime;
320  if (!instance_->Init(options, ignore_unrecognized)) {
321    delete instance_;
322    instance_ = NULL;
323    return false;
324  }
325  return true;
326}
327
328jobject CreateSystemClassLoader() {
329  if (Runtime::Current()->UseCompileTimeClassPath()) {
330    return NULL;
331  }
332
333  ScopedObjectAccess soa(Thread::Current());
334  ClassLinker* cl = Runtime::Current()->GetClassLinker();
335
336  StackHandleScope<3> hs(soa.Self());
337  Handle<mirror::Class> class_loader_class(
338      hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader)));
339  CHECK(cl->EnsureInitialized(class_loader_class, true, true));
340
341  mirror::ArtMethod* getSystemClassLoader =
342      class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;");
343  CHECK(getSystemClassLoader != NULL);
344
345  JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr);
346  Handle<mirror::ClassLoader> class_loader(
347      hs.NewHandle(down_cast<mirror::ClassLoader*>(result.GetL())));
348  CHECK(class_loader.Get() != nullptr);
349  JNIEnv* env = soa.Self()->GetJniEnv();
350  ScopedLocalRef<jobject> system_class_loader(env,
351                                              soa.AddLocalReference<jobject>(class_loader.Get()));
352  CHECK(system_class_loader.get() != nullptr);
353
354  soa.Self()->SetClassLoaderOverride(class_loader.Get());
355
356  Handle<mirror::Class> thread_class(
357      hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread)));
358  CHECK(cl->EnsureInitialized(thread_class, true, true));
359
360  mirror::ArtField* contextClassLoader =
361      thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;");
362  CHECK(contextClassLoader != NULL);
363
364  // We can't run in a transaction yet.
365  contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.Get());
366
367  return env->NewGlobalRef(system_class_loader.get());
368}
369
370std::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
379bool Runtime::Start() {
380  VLOG(startup) << "Runtime::Start entering";
381
382  // Restore main thread state to kNative as expected by native code.
383  Thread* self = Thread::Current();
384  self->TransitionFromRunnableToSuspended(kNative);
385
386  started_ = true;
387
388  // 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
392  // Initialize well known thread group values that may be accessed threads while attaching.
393  InitThreadGroups(self);
394
395  Thread::FinishStartup();
396
397  if (is_zygote_) {
398    if (!InitZygote()) {
399      return false;
400    }
401  } else {
402    DidForkFromZygote();
403  }
404
405  StartDaemonThreads();
406
407  system_class_loader_ = CreateSystemClassLoader();
408
409  {
410    ScopedObjectAccess soa(self);
411    self->GetJniEnv()->locals.AssertEmpty();
412  }
413
414  VLOG(startup) << "Runtime::Start exiting";
415  finished_starting_ = true;
416
417  if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) {
418    // User has asked for a profile using -Xenable-profiler.
419    // 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    }
424    StartProfiler(profile_output_filename_.c_str());
425  }
426
427  return true;
428}
429
430void 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) {
434    shutdown_cond_->Broadcast(Thread::Current());
435  }
436}
437
438// Do zygote-mode-only initialization.
439bool Runtime::InitZygote() {
440  // zygote goes into its own process group
441  setpgid(0, 0);
442
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,
463              "uid=0,gid=1028,mode=0751") == -1) {
464      LOG(WARNING) << "Failed to mount tmpfs to " << target_base;
465      return false;
466    }
467  }
468
469  return true;
470}
471
472void Runtime::DidForkFromZygote() {
473  is_zygote_ = false;
474
475  // Create the thread pool.
476  heap_->CreateThreadPool();
477
478  StartSignalCatcher();
479
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();
483}
484
485void Runtime::StartSignalCatcher() {
486  if (!is_zygote_) {
487    signal_catcher_ = new SignalCatcher(stack_trace_file_);
488  }
489}
490
491bool Runtime::IsShuttingDown(Thread* self) {
492  MutexLock mu(self, *Locks::runtime_shutdown_lock_);
493  return IsShuttingDownLocked();
494}
495
496void Runtime::StartDaemonThreads() {
497  VLOG(startup) << "Runtime::StartDaemonThreads entering";
498
499  Thread* self = Thread::Current();
500
501  // Must be in the kNative state for calling native methods.
502  CHECK_EQ(self->GetState(), kNative);
503
504  JNIEnv* env = self->GetJniEnv();
505  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  }
511
512  VLOG(startup) << "Runtime::StartDaemonThreads exiting";
513}
514
515bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) {
516  CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize);
517
518  std::unique_ptr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized));
519  if (options.get() == NULL) {
520    LOG(ERROR) << "Failed to parse options";
521    return false;
522  }
523  VLOG(startup) << "Runtime::Init -verbose:startup enabled";
524
525  QuasiAtomic::Startup();
526
527  Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_);
528
529  boot_class_path_string_ = options->boot_class_path_string_;
530  class_path_string_ = options->class_path_string_;
531  properties_ = options->properties_;
532
533  compiler_callbacks_ = options->compiler_callbacks_;
534  is_zygote_ = options->is_zygote_;
535  is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_;
536
537  vfprintf_ = options->hook_vfprintf_;
538  exit_ = options->hook_exit_;
539  abort_ = options->hook_abort_;
540
541  default_stack_size_ = options->stack_size_;
542  stack_trace_file_ = options->stack_trace_file_;
543
544  compiler_executable_ = options->compiler_executable_;
545  compiler_options_ = options->compiler_options_;
546  image_compiler_options_ = options->image_compiler_options_;
547
548  max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_;
549
550  monitor_list_ = new MonitorList;
551  monitor_pool_ = MonitorPool::Create();
552  thread_list_ = new ThreadList;
553  intern_table_ = new InternTable;
554
555  verify_ = options->verify_;
556
557  if (options->interpreter_only_) {
558    GetInstrumentation()->ForceInterpretOnly();
559  }
560
561  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)) {
575    fault_manager.Init();
576
577    // 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.
579    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    }
590
591    if (kEnableJavaStackTraceHandler) {
592      new JavaStackTraceHandler(&fault_manager);
593    }
594  }
595
596  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_,
601                       options->foreground_heap_growth_multiplier_,
602                       options->heap_maximum_size_,
603                       options->image_,
604                       options->image_isa_,
605                       options->collector_type_,
606                       options->background_collector_type_,
607                       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_,
612                       options->ignore_max_footprint_,
613                       options->use_tlab_,
614                       options->verify_pre_gc_heap_,
615                       options->verify_pre_sweeping_heap_,
616                       options->verify_post_gc_heap_,
617                       options->verify_pre_gc_rosalloc_,
618                       options->verify_pre_sweeping_rosalloc_,
619                       options->verify_post_gc_rosalloc_);
620
621  dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_;
622
623  BlockSignals();
624  InitPlatformSignalHandlers();
625
626  java_vm_ = new JavaVMExt(this, options.get());
627
628  Thread::Startup();
629
630  // 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);
634  CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId);
635  CHECK(self != NULL);
636
637  // Set us to runnable so tools using a runtime can allocate and GC by default
638  self->TransitionFromSuspendedToRunnable();
639
640  // Now we're attached, we can take the heap locks and validate the heap.
641  GetHeap()->EnableObjectValidation();
642
643  CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U);
644  class_linker_ = new ClassLinker(intern_table_);
645  if (GetHeap()->HasImageSpace()) {
646    class_linker_->InitFromImage();
647    if (kIsDebugBuild) {
648      GetHeap()->GetImageSpace()->VerifyImageAllocations();
649    }
650  } else {
651    CHECK(options->boot_class_path_ != NULL);
652    CHECK_NE(options->boot_class_path_->size(), 0U);
653    class_linker_->InitFromCompiler(*options->boot_class_path_);
654  }
655  CHECK(class_linker_ != NULL);
656  verifier::MethodVerifier::Init();
657
658  method_trace_ = options->method_trace_;
659  method_trace_file_ = options->method_trace_file_;
660  method_trace_file_size_ = options->method_trace_file_size_;
661
662  profile_output_filename_ = options->profile_output_filename_;
663  profiler_options_ = options->profiler_options_;
664
665  // TODO: move this to just be an Trace::Start argument
666  Trace::SetDefaultClockSource(options->profile_clock_source_);
667
668  if (options->method_trace_) {
669    Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0,
670                 false, false, 0);
671  }
672
673  // Pre-allocate an OutOfMemoryError for the double-OOME case.
674  self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;",
675                          "OutOfMemoryError thrown while trying to throw OutOfMemoryError; "
676                          "no stack available");
677  pre_allocated_OutOfMemoryError_ = self->GetException(NULL);
678  self->ClearException();
679
680  VLOG(startup) << "Runtime::Init exiting";
681  return true;
682}
683
684void Runtime::InitNativeMethods() {
685  VLOG(startup) << "Runtime::InitNativeMethods entering";
686  Thread* self = Thread::Current();
687  JNIEnv* env = self->GetJniEnv();
688
689  // Must be in the kNative state for calling native methods (JNI_OnLoad code).
690  CHECK_EQ(self->GetState(), kNative);
691
692  // First set up JniConstants, which is used by both the runtime's built-in native
693  // methods and libcore.
694  JniConstants::init(env);
695  WellKnownClasses::Init(env);
696
697  // Then set up the native methods provided by the runtime itself.
698  RegisterRuntimeNativeMethods(env);
699
700  // 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!
703  {
704    std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore"));
705    std::string reason;
706    self->TransitionFromSuspendedToRunnable();
707    StackHandleScope<1> hs(self);
708    auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr));
709    if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) {
710      LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason;
711    }
712    self->TransitionFromRunnableToSuspended(kNative);
713  }
714
715  // Initialize well known classes that may invoke runtime native methods.
716  WellKnownClasses::LateInit(env);
717
718  VLOG(startup) << "Runtime::InitNativeMethods exiting";
719}
720
721void Runtime::InitThreadGroups(Thread* self) {
722  JNIEnvExt* env = self->GetJniEnv();
723  ScopedJniEnvLocalRefState env_state(env);
724  main_thread_group_ =
725      env->NewGlobalRef(env->GetStaticObjectField(
726          WellKnownClasses::java_lang_ThreadGroup,
727          WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup));
728  CHECK(main_thread_group_ != NULL || IsCompiler());
729  system_thread_group_ =
730      env->NewGlobalRef(env->GetStaticObjectField(
731          WellKnownClasses::java_lang_ThreadGroup,
732          WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup));
733  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_;
744}
745
746jobject Runtime::GetSystemClassLoader() const {
747  CHECK(system_class_loader_ != NULL || IsCompiler());
748  return system_class_loader_;
749}
750
751void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) {
752#define REGISTER(FN) extern void FN(JNIEnv*); FN(env)
753  // Register Throwable first so that registration of other native methods can throw exceptions
754  REGISTER(register_java_lang_Throwable);
755  REGISTER(register_dalvik_system_DexFile);
756  REGISTER(register_dalvik_system_VMDebug);
757  REGISTER(register_dalvik_system_VMRuntime);
758  REGISTER(register_dalvik_system_VMStack);
759  REGISTER(register_dalvik_system_ZygoteHooks);
760  REGISTER(register_java_lang_Class);
761  REGISTER(register_java_lang_DexCache);
762  REGISTER(register_java_lang_Object);
763  REGISTER(register_java_lang_Runtime);
764  REGISTER(register_java_lang_String);
765  REGISTER(register_java_lang_System);
766  REGISTER(register_java_lang_Thread);
767  REGISTER(register_java_lang_VMClassLoader);
768  REGISTER(register_java_lang_ref_Reference);
769  REGISTER(register_java_lang_reflect_Array);
770  REGISTER(register_java_lang_reflect_Constructor);
771  REGISTER(register_java_lang_reflect_Field);
772  REGISTER(register_java_lang_reflect_Method);
773  REGISTER(register_java_lang_reflect_Proxy);
774  REGISTER(register_java_util_concurrent_atomic_AtomicLong);
775  REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer);
776  REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal);
777  REGISTER(register_sun_misc_Unsafe);
778#undef REGISTER
779}
780
781void Runtime::DumpForSigQuit(std::ostream& os) {
782  GetClassLinker()->DumpForSigQuit(os);
783  GetInternTable()->DumpForSigQuit(os);
784  GetJavaVM()->DumpForSigQuit(os);
785  GetHeap()->DumpForSigQuit(os);
786  os << "\n";
787
788  thread_list_->DumpForSigQuit(os);
789  BaseMutex::DumpAll(os);
790}
791
792void Runtime::DumpLockHolders(std::ostream& os) {
793  uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid();
794  pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner();
795  pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner();
796  pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner();
797  if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) {
798    os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n"
799       << "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
805void 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);
810    GetInstrumentation()->InstrumentQuickAllocEntryPoints();
811  } else {
812    GetInstrumentation()->UninstrumentQuickAllocEntryPoints();
813  }
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
823int32_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.
846    return static_cast<int>(stats->class_init_time_ns / 1000);
847  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:
853    LOG(FATAL) << "Unknown statistic " << kind;
854    return -1;  // unreachable
855  }
856}
857
858void Runtime::BlockSignals() {
859  SignalSet signals;
860  signals.Add(SIGPIPE);
861  // SIGQUIT is used to dump the runtime's state (including stack traces).
862  signals.Add(SIGQUIT);
863  // SIGUSR1 is used to initiate a GC.
864  signals.Add(SIGUSR1);
865  signals.Block();
866}
867
868bool 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;
871  if (thread_name == NULL) {
872    LOG(WARNING) << *Thread::Current() << " attached without supplying a name";
873  }
874  return success;
875}
876
877void Runtime::DetachCurrentThread() {
878  Thread* self = Thread::Current();
879  if (self == NULL) {
880    LOG(FATAL) << "attempting to detach thread that is not attached";
881  }
882  if (self->HasManagedStack()) {
883    LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code";
884  }
885  thread_list_->Unregister(self);
886}
887
888  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
895void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) {
896  // Visit the classes held as static in mirror classes, these can be visited concurrently and only
897  // need to be visited once per GC since they never change.
898  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);
904  // Visit all the primitive array types classes.
905  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
913}
914
915void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
916  intern_table_->VisitRoots(callback, arg, flags);
917  class_linker_->VisitRoots(callback, arg, flags);
918  Dbg::VisitRoots(callback, arg);
919  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) {
926  java_vm_->VisitRoots(callback, arg);
927  if (pre_allocated_OutOfMemoryError_ != nullptr) {
928    callback(reinterpret_cast<mirror::Object**>(&pre_allocated_OutOfMemoryError_), arg, 0,
929             kRootVMInternal);
930    DCHECK(pre_allocated_OutOfMemoryError_ != nullptr);
931  }
932  callback(reinterpret_cast<mirror::Object**>(&resolution_method_), arg, 0, kRootVMInternal);
933  DCHECK(resolution_method_ != nullptr);
934  if (HasImtConflictMethod()) {
935    callback(reinterpret_cast<mirror::Object**>(&imt_conflict_method_), arg, 0, kRootVMInternal);
936  }
937  if (HasDefaultImt()) {
938    callback(reinterpret_cast<mirror::Object**>(&default_imt_), arg, 0, kRootVMInternal);
939  }
940  for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
941    if (callee_save_methods_[i] != nullptr) {
942      callback(reinterpret_cast<mirror::Object**>(&callee_save_methods_[i]), arg, 0,
943               kRootVMInternal);
944    }
945  }
946  {
947    MutexLock mu(Thread::Current(), method_verifier_lock_);
948    for (verifier::MethodVerifier* verifier : method_verifiers_) {
949      verifier->VisitRoots(callback, arg);
950    }
951  }
952  if (preinitialization_transaction_ != nullptr) {
953    preinitialization_transaction_->VisitRoots(callback, arg);
954  }
955  instrumentation_.VisitRoots(callback, arg);
956}
957
958void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) {
959  thread_list_->VisitRoots(callback, arg);
960  VisitNonThreadRoots(callback, arg);
961}
962
963void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) {
964  VisitNonConcurrentRoots(callback, arg);
965  VisitConcurrentRoots(callback, arg, flags);
966}
967
968mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) {
969  Thread* self = Thread::Current();
970  StackHandleScope<1> hs(self);
971  Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable(
972      hs.NewHandle(cl->AllocArtMethodArray(self, 64)));
973  mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod();
974  for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) {
975    imtable->Set<false>(i, imt_conflict_method);
976  }
977  return imtable.Get();
978}
979
980mirror::ArtMethod* Runtime::CreateImtConflictMethod() {
981  Thread* self = Thread::Current();
982  Runtime* runtime = Runtime::Current();
983  ClassLinker* class_linker = runtime->GetClassLinker();
984  StackHandleScope<1> hs(self);
985  Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
986  method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
987  // TODO: use a special method for imt conflict method saves.
988  method->SetDexMethodIndex(DexFile::kDexNoIndex);
989  // When compiling, the code pointer will get set later when the image is loaded.
990  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  }
997  return method.Get();
998}
999
1000mirror::ArtMethod* Runtime::CreateResolutionMethod() {
1001  Thread* self = Thread::Current();
1002  Runtime* runtime = Runtime::Current();
1003  ClassLinker* class_linker = runtime->GetClassLinker();
1004  StackHandleScope<1> hs(self);
1005  Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
1006  method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
1007  // TODO: use a special method for resolution method saves
1008  method->SetDexMethodIndex(DexFile::kDexNoIndex);
1009  // When compiling, the code pointer will get set later when the image is loaded.
1010  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  }
1017  return method.Get();
1018}
1019
1020mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) {
1021  Thread* self = Thread::Current();
1022  Runtime* runtime = Runtime::Current();
1023  ClassLinker* class_linker = runtime->GetClassLinker();
1024  StackHandleScope<1> hs(self);
1025  Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self)));
1026  method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod());
1027  // TODO: use a special method for callee saves
1028  method->SetDexMethodIndex(DexFile::kDexNoIndex);
1029  method->SetEntryPointFromPortableCompiledCode(nullptr);
1030  method->SetEntryPointFromQuickCompiledCode(nullptr);
1031  DCHECK_NE(instruction_set_, kNone);
1032  return method.Get();
1033}
1034
1035void Runtime::DisallowNewSystemWeaks() {
1036  monitor_list_->DisallowNewMonitors();
1037  intern_table_->DisallowNewInterns();
1038  java_vm_->DisallowNewWeakGlobals();
1039  Dbg::DisallowNewObjectRegistryObjects();
1040}
1041
1042void Runtime::AllowNewSystemWeaks() {
1043  monitor_list_->AllowNewMonitors();
1044  intern_table_->AllowNewInterns();
1045  java_vm_->AllowNewWeakGlobals();
1046  Dbg::AllowNewObjectRegistryObjects();
1047}
1048
1049void 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
1081void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
1082  DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
1083  callee_save_methods_[type] = method;
1084}
1085
1086const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) {
1087  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
1096void Runtime::SetCompileTimeClassPath(jobject class_loader,
1097                                      std::vector<const DexFile*>& class_path) {
1098  CHECK(!IsStarted());
1099  use_compile_time_class_path_ = true;
1100  compile_time_class_paths_.Put(class_loader, class_path);
1101}
1102
1103void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) {
1104  DCHECK(verifier != nullptr);
1105  MutexLock mu(Thread::Current(), method_verifier_lock_);
1106  method_verifiers_.insert(verifier);
1107}
1108
1109void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) {
1110  DCHECK(verifier != nullptr);
1111  MutexLock mu(Thread::Current(), method_verifier_lock_);
1112  auto it = method_verifiers_.find(verifier);
1113  CHECK(it != method_verifiers_.end());
1114  method_verifiers_.erase(it);
1115}
1116
1117void 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_);
1121}
1122
1123// Transaction support.
1124void Runtime::EnterTransactionMode(Transaction* transaction) {
1125  DCHECK(IsCompiler());
1126  DCHECK(transaction != nullptr);
1127  DCHECK(!IsActiveTransaction());
1128  preinitialization_transaction_ = transaction;
1129}
1130
1131void Runtime::ExitTransactionMode() {
1132  DCHECK(IsCompiler());
1133  DCHECK(IsActiveTransaction());
1134  preinitialization_transaction_ = nullptr;
1135}
1136
1137void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset,
1138                                 uint32_t value, bool is_volatile) const {
1139  DCHECK(IsCompiler());
1140  DCHECK(IsActiveTransaction());
1141  preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile);
1142}
1143
1144void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset,
1145                                 uint64_t value, bool is_volatile) const {
1146  DCHECK(IsCompiler());
1147  DCHECK(IsActiveTransaction());
1148  preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile);
1149}
1150
1151void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset,
1152                                        mirror::Object* value, bool is_volatile) const {
1153  DCHECK(IsCompiler());
1154  DCHECK(IsActiveTransaction());
1155  preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile);
1156}
1157
1158void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const {
1159  DCHECK(IsCompiler());
1160  DCHECK(IsActiveTransaction());
1161  preinitialization_transaction_->RecordWriteArray(array, index, value);
1162}
1163
1164void Runtime::RecordStrongStringInsertion(mirror::String* s, uint32_t hash_code) const {
1165  DCHECK(IsCompiler());
1166  DCHECK(IsActiveTransaction());
1167  preinitialization_transaction_->RecordStrongStringInsertion(s, hash_code);
1168}
1169
1170void Runtime::RecordWeakStringInsertion(mirror::String* s, uint32_t hash_code) const {
1171  DCHECK(IsCompiler());
1172  DCHECK(IsActiveTransaction());
1173  preinitialization_transaction_->RecordWeakStringInsertion(s, hash_code);
1174}
1175
1176void Runtime::RecordStrongStringRemoval(mirror::String* s, uint32_t hash_code) const {
1177  DCHECK(IsCompiler());
1178  DCHECK(IsActiveTransaction());
1179  preinitialization_transaction_->RecordStrongStringRemoval(s, hash_code);
1180}
1181
1182void Runtime::RecordWeakStringRemoval(mirror::String* s, uint32_t hash_code) const {
1183  DCHECK(IsCompiler());
1184  DCHECK(IsActiveTransaction());
1185  preinitialization_transaction_->RecordWeakStringRemoval(s, hash_code);
1186}
1187
1188void Runtime::SetFaultMessage(const std::string& message) {
1189  MutexLock mu(Thread::Current(), fault_message_lock_);
1190  fault_message_ = message;
1191}
1192
1193void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv)
1194    const {
1195  if (GetInstrumentation()->InterpretOnly()) {
1196    argv->push_back("--compiler-filter=interpret-only");
1197  }
1198
1199  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.
1233  std::string instruction_set("--instruction-set=");
1234  instruction_set += GetInstructionSetString(kRuntimeISA);
1235  argv->push_back(instruction_set);
1236
1237  std::string features("--instruction-set-features=");
1238  features += GetDefaultInstructionSetFeatures();
1239  argv->push_back(features);
1240}
1241
1242void Runtime::UpdateProfilerState(int state) {
1243  VLOG(profiler) << "Profiler state updated to " << state;
1244}
1245}  // namespace art
1246