| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "vm/dart.h" |
| |
| #include "vm/become.h" |
| #include "vm/clustered_snapshot.h" |
| #include "vm/code_observers.h" |
| #include "vm/cpu.h" |
| #include "vm/dart_api_state.h" |
| #include "vm/dart_entry.h" |
| #include "vm/debugger.h" |
| #include "vm/flags.h" |
| #include "vm/freelist.h" |
| #include "vm/handles.h" |
| #include "vm/heap.h" |
| #include "vm/isolate.h" |
| #include "vm/message_handler.h" |
| #include "vm/metrics.h" |
| #include "vm/object.h" |
| #include "vm/object_store.h" |
| #include "vm/object_id_ring.h" |
| #include "vm/port.h" |
| #include "vm/profiler.h" |
| #include "vm/service_isolate.h" |
| #include "vm/simulator.h" |
| #include "vm/snapshot.h" |
| #include "vm/store_buffer.h" |
| #include "vm/stub_code.h" |
| #include "vm/symbols.h" |
| #include "vm/thread_interrupter.h" |
| #include "vm/thread_pool.h" |
| #include "vm/timeline.h" |
| #include "vm/virtual_memory.h" |
| #include "vm/zone.h" |
| |
| namespace dart { |
| |
| DECLARE_FLAG(bool, print_class_table); |
| DECLARE_FLAG(bool, trace_time_all); |
| DEFINE_FLAG(bool, keep_code, false, |
| "Keep deoptimized code for profiling."); |
| DEFINE_FLAG(bool, trace_shutdown, false, "Trace VM shutdown on stderr"); |
| |
| Isolate* Dart::vm_isolate_ = NULL; |
| int64_t Dart::start_time_ = 0; |
| ThreadPool* Dart::thread_pool_ = NULL; |
| DebugInfo* Dart::pprof_symbol_generator_ = NULL; |
| ReadOnlyHandles* Dart::predefined_handles_ = NULL; |
| Snapshot::Kind Dart::snapshot_kind_ = Snapshot::kInvalid; |
| const uint8_t* Dart::instructions_snapshot_buffer_ = NULL; |
| const uint8_t* Dart::data_snapshot_buffer_ = NULL; |
| Dart_ThreadExitCallback Dart::thread_exit_callback_ = NULL; |
| Dart_FileOpenCallback Dart::file_open_callback_ = NULL; |
| Dart_FileReadCallback Dart::file_read_callback_ = NULL; |
| Dart_FileWriteCallback Dart::file_write_callback_ = NULL; |
| Dart_FileCloseCallback Dart::file_close_callback_ = NULL; |
| Dart_EntropySource Dart::entropy_source_callback_ = NULL; |
| |
| // Structure for managing read-only global handles allocation used for |
| // creating global read-only handles that are pre created and initialized |
| // for use across all isolates. Having these global pre created handles |
| // stored in the vm isolate ensures that we don't constantly create and |
| // destroy handles for read-only objects referred in the VM code |
| // (e.g: symbols, null object, empty array etc.) |
| // The ReadOnlyHandles C++ Wrapper around VMHandles which is a ValueObject is |
| // to ensure that the handles area is not trashed by automatic running of C++ |
| // static destructors when 'exit()" is called by any isolate. There might be |
| // other isolates running at the same time and trashing the handles area will |
| // have unintended consequences. |
| class ReadOnlyHandles { |
| public: |
| ReadOnlyHandles() { } |
| |
| private: |
| VMHandles handles_; |
| LocalHandles api_handles_; |
| |
| friend class Dart; |
| DISALLOW_COPY_AND_ASSIGN(ReadOnlyHandles); |
| }; |
| |
| |
| static void CheckOffsets() { |
| #define CHECK_OFFSET(expr, offset) \ |
| if ((expr) != (offset)) { \ |
| FATAL2("%s == %" Pd, #expr, (expr)); \ |
| } \ |
| |
| #if defined(TARGET_ARCH_ARM) |
| // These offsets are embedded in precompiled instructions. We need simarm |
| // (compiler) and arm (runtime) to agree. |
| CHECK_OFFSET(Heap::TopOffset(Heap::kNew), 8); |
| CHECK_OFFSET(Isolate::heap_offset(), 8); |
| CHECK_OFFSET(Thread::stack_limit_offset(), 4); |
| CHECK_OFFSET(Thread::object_null_offset(), 36); |
| NOT_IN_PRODUCT(CHECK_OFFSET(sizeof(ClassHeapStats), 120)); |
| #endif |
| #if defined(TARGET_ARCH_MIPS) |
| // These offsets are embedded in precompiled instructions. We need simmips |
| // (compiler) and mips (runtime) to agree. |
| CHECK_OFFSET(Heap::TopOffset(Heap::kNew), 8); |
| CHECK_OFFSET(Isolate::heap_offset(), 8); |
| CHECK_OFFSET(Thread::stack_limit_offset(), 4); |
| CHECK_OFFSET(Thread::object_null_offset(), 36); |
| NOT_IN_PRODUCT(CHECK_OFFSET(sizeof(ClassHeapStats), 120)); |
| #endif |
| #if defined(TARGET_ARCH_ARM64) |
| // These offsets are embedded in precompiled instructions. We need simarm64 |
| // (compiler) and arm64 (runtime) to agree. |
| CHECK_OFFSET(Heap::TopOffset(Heap::kNew), 8); |
| CHECK_OFFSET(Isolate::heap_offset(), 16); |
| CHECK_OFFSET(Thread::stack_limit_offset(), 8); |
| CHECK_OFFSET(Thread::object_null_offset(), 72); |
| NOT_IN_PRODUCT(CHECK_OFFSET(sizeof(ClassHeapStats), 208)); |
| #endif |
| #undef CHECK_OFFSET |
| } |
| |
| |
| char* Dart::InitOnce(const uint8_t* vm_isolate_snapshot, |
| const uint8_t* instructions_snapshot, |
| const uint8_t* data_snapshot, |
| Dart_IsolateCreateCallback create, |
| Dart_IsolateShutdownCallback shutdown, |
| Dart_ThreadExitCallback thread_exit, |
| Dart_FileOpenCallback file_open, |
| Dart_FileReadCallback file_read, |
| Dart_FileWriteCallback file_write, |
| Dart_FileCloseCallback file_close, |
| Dart_EntropySource entropy_source, |
| Dart_GetVMServiceAssetsArchive get_service_assets) { |
| CheckOffsets(); |
| // TODO(iposva): Fix race condition here. |
| if (vm_isolate_ != NULL || !Flags::Initialized()) { |
| return strdup("VM already initialized or flags not initialized."); |
| } |
| set_thread_exit_callback(thread_exit); |
| SetFileCallbacks(file_open, file_read, file_write, file_close); |
| set_entropy_source_callback(entropy_source); |
| OS::InitOnce(); |
| VirtualMemory::InitOnce(); |
| OSThread::InitOnce(); |
| if (FLAG_support_timeline) { |
| Timeline::InitOnce(); |
| } |
| NOT_IN_PRODUCT(TimelineDurationScope tds(Timeline::GetVMStream(), |
| "Dart::InitOnce")); |
| Isolate::InitOnce(); |
| PortMap::InitOnce(); |
| FreeListElement::InitOnce(); |
| ForwardingCorpse::InitOnce(); |
| Api::InitOnce(); |
| NOT_IN_PRODUCT(CodeObservers::InitOnce()); |
| if (FLAG_profiler) { |
| ThreadInterrupter::InitOnce(); |
| Profiler::InitOnce(); |
| } |
| SemiSpace::InitOnce(); |
| Metric::InitOnce(); |
| StoreBuffer::InitOnce(); |
| MarkingStack::InitOnce(); |
| |
| #if defined(USING_SIMULATOR) |
| Simulator::InitOnce(); |
| #endif |
| // Create the read-only handles area. |
| ASSERT(predefined_handles_ == NULL); |
| predefined_handles_ = new ReadOnlyHandles(); |
| // Create the VM isolate and finish the VM initialization. |
| ASSERT(thread_pool_ == NULL); |
| thread_pool_ = new ThreadPool(); |
| { |
| ASSERT(vm_isolate_ == NULL); |
| ASSERT(Flags::Initialized()); |
| const bool is_vm_isolate = true; |
| |
| // Setup default flags for the VM isolate. |
| Dart_IsolateFlags api_flags; |
| Isolate::FlagsInitialize(&api_flags); |
| vm_isolate_ = Isolate::Init("vm-isolate", api_flags, is_vm_isolate); |
| start_time_ = vm_isolate_->start_time(); |
| // Verify assumptions about executing in the VM isolate. |
| ASSERT(vm_isolate_ == Isolate::Current()); |
| ASSERT(vm_isolate_ == Thread::Current()->isolate()); |
| |
| Thread* T = Thread::Current(); |
| ASSERT(T != NULL); |
| StackZone zone(T); |
| HandleScope handle_scope(T); |
| Object::InitNull(vm_isolate_); |
| ObjectStore::Init(vm_isolate_); |
| TargetCPUFeatures::InitOnce(); |
| Object::InitOnce(vm_isolate_); |
| ArgumentsDescriptor::InitOnce(); |
| ICData::InitOnce(); |
| if (vm_isolate_snapshot != NULL) { |
| NOT_IN_PRODUCT(TimelineDurationScope tds(Timeline::GetVMStream(), |
| "VMIsolateSnapshot")); |
| const Snapshot* snapshot = Snapshot::SetupFromBuffer(vm_isolate_snapshot); |
| if (snapshot == NULL) { |
| return strdup("Invalid vm isolate snapshot seen"); |
| } |
| snapshot_kind_ = snapshot->kind(); |
| |
| if (Snapshot::IncludesCode(snapshot_kind_)) { |
| if (snapshot_kind_ == Snapshot::kAppNoJIT) { |
| #if defined(DART_PRECOMPILED_RUNTIME) |
| vm_isolate_->set_compilation_allowed(false); |
| if (!FLAG_precompiled_runtime) { |
| return strdup("Flag --precompilation was not specified"); |
| } |
| #else |
| return strdup("JIT runtime cannot run a precompiled snapshot"); |
| #endif |
| } |
| if (instructions_snapshot == NULL) { |
| return strdup("Missing instructions snapshot"); |
| } |
| if (data_snapshot == NULL) { |
| return strdup("Missing rodata snapshot"); |
| } |
| vm_isolate_->SetupInstructionsSnapshotPage(instructions_snapshot); |
| vm_isolate_->SetupDataSnapshotPage(data_snapshot); |
| } else if (Snapshot::IsFull(snapshot_kind_)) { |
| #if defined(DART_PRECOMPILED_RUNTIME) |
| return strdup("Precompiled runtime requires a precompiled snapshot"); |
| #else |
| if (instructions_snapshot != NULL) { |
| return strdup("Unexpected instructions snapshot"); |
| } |
| if (data_snapshot != NULL) { |
| return strdup("Unexpected rodata snapshot"); |
| } |
| StubCode::InitOnce(); |
| #endif |
| } else { |
| return strdup("Invalid vm isolate snapshot seen"); |
| } |
| VmIsolateSnapshotReader reader(snapshot->kind(), |
| snapshot->content(), |
| snapshot->length(), |
| instructions_snapshot, |
| data_snapshot, |
| T); |
| const Error& error = Error::Handle(reader.ReadVmIsolateSnapshot()); |
| if (!error.IsNull()) { |
| // Must copy before leaving the zone. |
| return strdup(error.ToErrorCString()); |
| } |
| NOT_IN_PRODUCT(if (tds.enabled()) { |
| tds.SetNumArguments(2); |
| tds.FormatArgument(0, "snapshotSize", "%" Pd, snapshot->length()); |
| tds.FormatArgument(1, "heapSize", "%" Pd64, |
| vm_isolate_->heap()->UsedInWords(Heap::kOld) * |
| kWordSize); |
| }); |
| if (FLAG_trace_isolates) { |
| OS::Print("Size of vm isolate snapshot = %" Pd "\n", |
| snapshot->length()); |
| vm_isolate_->heap()->PrintSizes(); |
| MegamorphicCacheTable::PrintSizes(vm_isolate_); |
| intptr_t size; |
| intptr_t capacity; |
| Symbols::GetStats(vm_isolate_, &size, &capacity); |
| OS::Print("VM Isolate: Number of symbols : %" Pd "\n", size); |
| OS::Print("VM Isolate: Symbol table capacity : %" Pd "\n", capacity); |
| } |
| } else { |
| #if defined(DART_PRECOMPILED_RUNTIME) |
| return strdup("Precompiled runtime requires a precompiled snapshot"); |
| #else |
| snapshot_kind_ = Snapshot::kNone; |
| StubCode::InitOnce(); |
| Symbols::InitOnce(vm_isolate_); |
| #endif |
| } |
| // We need to initialize the constants here for the vm isolate thread due to |
| // bootstrapping issues. |
| T->InitVMConstants(); |
| Scanner::InitOnce(); |
| #if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64) |
| // Dart VM requires at least SSE2. |
| if (!TargetCPUFeatures::sse2_supported()) { |
| return strdup("SSE2 is required."); |
| } |
| #endif |
| { |
| NOT_IN_PRODUCT(TimelineDurationScope tds(Timeline::GetVMStream(), |
| "FinalizeVMIsolate")); |
| Object::FinalizeVMIsolate(vm_isolate_); |
| } |
| #if defined(DEBUG) |
| vm_isolate_->heap()->Verify(kRequireMarked); |
| #endif |
| } |
| // Allocate the "persistent" scoped handles for the predefined API |
| // values (such as Dart_True, Dart_False and Dart_Null). |
| Api::InitHandles(); |
| |
| Thread::ExitIsolate(); // Unregister the VM isolate from this thread. |
| Isolate::SetCreateCallback(create); |
| Isolate::SetShutdownCallback(shutdown); |
| |
| if (FLAG_support_service) { |
| Service::SetGetServiceAssetsCallback(get_service_assets); |
| } |
| |
| ServiceIsolate::Run(); |
| |
| return NULL; |
| } |
| |
| |
| // This waits until only the VM isolate and the service isolate remains in the |
| // list, i.e. list length == 2. |
| void Dart::WaitForApplicationIsolateShutdown() { |
| ASSERT(!Isolate::creation_enabled_); |
| MonitorLocker ml(Isolate::isolates_list_monitor_); |
| while ((Isolate::isolates_list_head_ != NULL) && |
| (Isolate::isolates_list_head_->next_ != NULL) && |
| (Isolate::isolates_list_head_->next_->next_ != NULL)) { |
| ml.Wait(); |
| } |
| ASSERT( |
| ((Isolate::isolates_list_head_ == Dart::vm_isolate()) && |
| ServiceIsolate::IsServiceIsolate(Isolate::isolates_list_head_->next_)) || |
| ((Isolate::isolates_list_head_->next_ == Dart::vm_isolate()) && |
| ServiceIsolate::IsServiceIsolate(Isolate::isolates_list_head_))); |
| } |
| |
| |
| // This waits until only the VM isolate remains in the list. |
| void Dart::WaitForIsolateShutdown() { |
| ASSERT(!Isolate::creation_enabled_); |
| MonitorLocker ml(Isolate::isolates_list_monitor_); |
| while ((Isolate::isolates_list_head_ != NULL) && |
| (Isolate::isolates_list_head_->next_ != NULL)) { |
| ml.Wait(); |
| } |
| ASSERT(Isolate::isolates_list_head_ == Dart::vm_isolate()); |
| } |
| |
| |
| const char* Dart::Cleanup() { |
| ASSERT(Isolate::Current() == NULL); |
| if (vm_isolate_ == NULL) { |
| return "VM already terminated."; |
| } |
| |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Starting shutdown\n", |
| timestamp()); |
| } |
| |
| if (FLAG_profiler) { |
| // Shut down profiling. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Shutting down profiling\n", |
| timestamp()); |
| } |
| Profiler::Shutdown(); |
| } |
| |
| |
| { |
| // Set the VM isolate as current isolate when shutting down |
| // Metrics so that we can use a StackZone. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Entering vm isolate\n", |
| timestamp()); |
| } |
| bool result = Thread::EnterIsolate(vm_isolate_); |
| ASSERT(result); |
| Metric::Cleanup(); |
| Thread::ExitIsolate(); |
| } |
| |
| // Disable the creation of new isolates. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Disabling isolate creation\n", |
| timestamp()); |
| } |
| Isolate::DisableIsolateCreation(); |
| |
| // Send the OOB Kill message to all remaining application isolates. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Killing all app isolates\n", |
| timestamp()); |
| } |
| Isolate::KillAllIsolates(Isolate::kInternalKillMsg); |
| |
| // Wait for all isolates, but the service and the vm isolate to shut down. |
| // Only do that if there is a service isolate running. |
| if (ServiceIsolate::IsRunning()) { |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Shutting down app isolates\n", |
| timestamp()); |
| } |
| WaitForApplicationIsolateShutdown(); |
| } |
| |
| // Shutdown the service isolate. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Shutting down service isolate\n", |
| timestamp()); |
| } |
| ServiceIsolate::Shutdown(); |
| |
| // Wait for the remaining isolate (service isolate) to shutdown |
| // before shutting down the thread pool. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Waiting for isolate shutdown\n", |
| timestamp()); |
| } |
| WaitForIsolateShutdown(); |
| |
| // Shutdown the thread pool. On return, all thread pool threads have exited. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Deleting thread pool\n", |
| timestamp()); |
| } |
| delete thread_pool_; |
| thread_pool_ = NULL; |
| |
| // Disable creation of any new OSThread structures which means no more new |
| // threads can do an EnterIsolate. This must come after isolate shutdown |
| // because new threads may need to be spawned to shutdown the isolates. |
| // This must come after deletion of the thread pool to avoid a race in which |
| // a thread spawned by the thread pool does not exit through the thread |
| // pool, messing up its bookkeeping. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Disabling OS Thread creation\n", |
| timestamp()); |
| } |
| OSThread::DisableOSThreadCreation(); |
| |
| // Set the VM isolate as current isolate. |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Cleaning up vm isolate\n", |
| timestamp()); |
| } |
| bool result = Thread::EnterIsolate(vm_isolate_); |
| ASSERT(result); |
| |
| ShutdownIsolate(); |
| vm_isolate_ = NULL; |
| ASSERT(Isolate::IsolateListLength() == 0); |
| |
| TargetCPUFeatures::Cleanup(); |
| StoreBuffer::ShutDown(); |
| |
| // Delete the current thread's TLS and set it's TLS to null. |
| // If it is the last thread then the destructor would call |
| // OSThread::Cleanup. |
| OSThread* os_thread = OSThread::Current(); |
| OSThread::SetCurrent(NULL); |
| delete os_thread; |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Deleted os_thread\n", |
| timestamp()); |
| } |
| |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Deleting code observers\n", |
| timestamp()); |
| } |
| NOT_IN_PRODUCT(CodeObservers::DeleteAll()); |
| if (FLAG_support_timeline) { |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Shutting down timeline\n", |
| timestamp()); |
| } |
| Timeline::Shutdown(); |
| } |
| if (FLAG_trace_shutdown) { |
| OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Done\n", timestamp()); |
| } |
| |
| return NULL; |
| } |
| |
| |
| Isolate* Dart::CreateIsolate(const char* name_prefix, |
| const Dart_IsolateFlags& api_flags) { |
| // Create a new isolate. |
| Isolate* isolate = Isolate::Init(name_prefix, api_flags); |
| return isolate; |
| } |
| |
| |
| RawError* Dart::InitializeIsolate(const uint8_t* snapshot_buffer, void* data) { |
| // Initialize the new isolate. |
| Thread* T = Thread::Current(); |
| Isolate* I = T->isolate(); |
| NOT_IN_PRODUCT( |
| TimelineDurationScope tds(T, |
| Timeline::GetIsolateStream(), |
| "InitializeIsolate"); |
| tds.SetNumArguments(1); |
| tds.CopyArgument(0, "isolateName", I->name()); |
| ) |
| ASSERT(I != NULL); |
| StackZone zone(T); |
| HandleScope handle_scope(T); |
| { |
| NOT_IN_PRODUCT(TimelineDurationScope tds(T, |
| Timeline::GetIsolateStream(), "ObjectStore::Init")); |
| ObjectStore::Init(I); |
| } |
| |
| const Error& error = Error::Handle(Object::Init(I)); |
| if (!error.IsNull()) { |
| return error.raw(); |
| } |
| if (snapshot_buffer != NULL) { |
| // Read the snapshot and setup the initial state. |
| NOT_IN_PRODUCT(TimelineDurationScope tds(T, |
| Timeline::GetIsolateStream(), "IsolateSnapshotReader")); |
| // TODO(turnidge): Remove once length is not part of the snapshot. |
| const Snapshot* snapshot = Snapshot::SetupFromBuffer(snapshot_buffer); |
| if (snapshot == NULL) { |
| const String& message = String::Handle( |
| String::New("Invalid snapshot.")); |
| return ApiError::New(message); |
| } |
| ASSERT(Snapshot::IsFull(snapshot->kind())); |
| ASSERT(snapshot->kind() == snapshot_kind_); |
| if (FLAG_trace_isolates) { |
| OS::Print("Size of isolate snapshot = %" Pd "\n", snapshot->length()); |
| } |
| IsolateSnapshotReader reader(snapshot->kind(), |
| snapshot->content(), |
| snapshot->length(), |
| Dart::instructions_snapshot_buffer(), |
| Dart::data_snapshot_buffer(), |
| T); |
| const Error& error = Error::Handle(reader.ReadFullSnapshot()); |
| if (!error.IsNull()) { |
| return error.raw(); |
| } |
| NOT_IN_PRODUCT(if (tds.enabled()) { |
| tds.SetNumArguments(2); |
| tds.FormatArgument(0, "snapshotSize", "%" Pd, snapshot->length()); |
| tds.FormatArgument(1, "heapSize", "%" Pd64, |
| I->heap()->UsedInWords(Heap::kOld) * kWordSize); |
| }); |
| if (FLAG_trace_isolates) { |
| I->heap()->PrintSizes(); |
| MegamorphicCacheTable::PrintSizes(I); |
| } |
| } else { |
| ASSERT(snapshot_kind_ == Snapshot::kNone); |
| } |
| |
| Object::VerifyBuiltinVtables(); |
| DEBUG_ONLY(I->heap()->Verify(kForbidMarked)); |
| |
| { |
| NOT_IN_PRODUCT(TimelineDurationScope tds(T, |
| Timeline::GetIsolateStream(), "StubCode::Init")); |
| StubCode::Init(I); |
| } |
| |
| #if !defined(DART_PRECOMPILED_RUNTIME) |
| // When running precompiled, the megamorphic miss function/code comes from the |
| // snapshot. |
| if (!Snapshot::IncludesCode(Dart::snapshot_kind())) { |
| MegamorphicCacheTable::InitMissHandler(I); |
| } |
| #endif |
| |
| const Code& miss_code = |
| Code::Handle(I->object_store()->megamorphic_miss_code()); |
| I->set_ic_miss_code(miss_code); |
| |
| if (snapshot_buffer == NULL) { |
| const Error& error = Error::Handle(I->object_store()->PreallocateObjects()); |
| if (!error.IsNull()) { |
| return error.raw(); |
| } |
| } |
| |
| I->heap()->InitGrowthControl(); |
| I->set_init_callback_data(data); |
| Api::SetupAcquiredError(I); |
| if (FLAG_print_class_table) { |
| I->class_table()->Print(); |
| } |
| |
| ServiceIsolate::MaybeMakeServiceIsolate(I); |
| if (!ServiceIsolate::IsServiceIsolate(I)) { |
| I->message_handler()->set_should_pause_on_start( |
| FLAG_pause_isolates_on_start); |
| I->message_handler()->set_should_pause_on_exit( |
| FLAG_pause_isolates_on_exit); |
| } |
| ServiceIsolate::SendIsolateStartupMessage(); |
| if (FLAG_support_debugger) { |
| I->debugger()->NotifyIsolateCreated(); |
| } |
| // Create tag table. |
| I->set_tag_table(GrowableObjectArray::Handle(GrowableObjectArray::New())); |
| // Set up default UserTag. |
| const UserTag& default_tag = UserTag::Handle(UserTag::DefaultTag()); |
| I->set_current_tag(default_tag); |
| |
| if (FLAG_keep_code) { |
| I->set_deoptimized_code_array( |
| GrowableObjectArray::Handle(GrowableObjectArray::New())); |
| } |
| return Error::null(); |
| } |
| |
| |
| const char* Dart::FeaturesString(Snapshot::Kind kind) { |
| TextBuffer buffer(64); |
| |
| // Different fields are included for DEBUG/RELEASE/PRODUCT. |
| #if defined(DEBUG) |
| buffer.AddString("debug"); |
| #elif defined(PRODUCT) |
| buffer.AddString("product"); |
| #else |
| buffer.AddString("release"); |
| #endif |
| |
| if (Snapshot::IncludesCode(kind)) { |
| // Checked mode affects deopt ids. |
| buffer.AddString(FLAG_enable_asserts ? " asserts" : " no-asserts"); |
| buffer.AddString(FLAG_enable_type_checks ? " type-checks" |
| : " no-type-checks"); |
| |
| // Generated code must match the host architecture and ABI. |
| #if defined(TARGET_ARCH_ARM) |
| #if defined(TARGET_ABI_IOS) |
| buffer.AddString(" arm-ios"); |
| #elif defined(TARGET_ABI_EABI) |
| buffer.AddString(" arm-eabi"); |
| #else |
| #error Unknown ABI |
| #endif |
| buffer.AddString(TargetCPUFeatures::hardfp_supported() ? " hardfp" |
| : " softfp"); |
| #elif defined(TARGET_ARCH_ARM64) |
| buffer.AddString(" arm64"); |
| #elif defined(TARGET_ARCH_MIPS) |
| buffer.AddString(" mips"); |
| #elif defined(TARGET_ARCH_IA32) |
| buffer.AddString(" ia32"); |
| #elif defined(TARGET_ARCH_X64) |
| #if defined(_WIN64) |
| buffer.AddString(" x64-win"); |
| #else |
| buffer.AddString(" x64-sysv"); |
| #endif |
| #elif defined(TARGET_ARCH_DBC) |
| buffer.AddString(" dbc"); |
| #elif defined(TARGET_ARCH_DBC64) |
| buffer.AddString(" dbc64"); |
| #endif |
| } |
| |
| return buffer.Steal(); |
| } |
| |
| |
| void Dart::RunShutdownCallback() { |
| Isolate* isolate = Isolate::Current(); |
| void* callback_data = isolate->init_callback_data(); |
| Dart_IsolateShutdownCallback callback = Isolate::ShutdownCallback(); |
| if (callback != NULL) { |
| (callback)(callback_data); |
| } |
| } |
| |
| |
| void Dart::ShutdownIsolate(Isolate* isolate) { |
| ASSERT(Isolate::Current() == NULL); |
| // We need to enter the isolate in order to shut it down. |
| bool result = Thread::EnterIsolate(isolate); |
| ASSERT(result); |
| ShutdownIsolate(); |
| // Since the isolate is shutdown and deleted, there is no need to |
| // exit the isolate here. |
| ASSERT(Isolate::Current() == NULL); |
| } |
| |
| |
| void Dart::ShutdownIsolate() { |
| Isolate* isolate = Isolate::Current(); |
| isolate->Shutdown(); |
| delete isolate; |
| } |
| |
| |
| int64_t Dart::timestamp() { |
| return ((OS::GetCurrentTimeMicros() - Dart::start_time_) / |
| kMillisecondsPerSecond); |
| } |
| |
| |
| uword Dart::AllocateReadOnlyHandle() { |
| ASSERT(Isolate::Current() == Dart::vm_isolate()); |
| ASSERT(predefined_handles_ != NULL); |
| return predefined_handles_->handles_.AllocateScopedHandle(); |
| } |
| |
| |
| LocalHandle* Dart::AllocateReadOnlyApiHandle() { |
| ASSERT(Isolate::Current() == Dart::vm_isolate()); |
| ASSERT(predefined_handles_ != NULL); |
| return predefined_handles_->api_handles_.AllocateHandle(); |
| } |
| |
| |
| bool Dart::IsReadOnlyHandle(uword address) { |
| ASSERT(predefined_handles_ != NULL); |
| return predefined_handles_->handles_.IsValidScopedHandle(address); |
| } |
| |
| |
| bool Dart::IsReadOnlyApiHandle(Dart_Handle handle) { |
| ASSERT(predefined_handles_ != NULL); |
| return predefined_handles_->api_handles_.IsValidHandle(handle); |
| } |
| |
| } // namespace dart |
