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V8IsolateImpl.cpp
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1995 lines (1544 loc) · 60.3 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
#include "ClearScriptV8Native.h"
//-----------------------------------------------------------------------------
// V8Platform
//-----------------------------------------------------------------------------
class V8Platform final: public v8::Platform
{
public:
static V8Platform& GetInstance();
static void EnsureInstalled();
virtual int NumberOfWorkerThreads() override;
virtual std::shared_ptr<v8::TaskRunner> GetForegroundTaskRunner(v8::Isolate* pIsolate) override;
virtual void CallOnWorkerThread(std::unique_ptr<v8::Task> upTask) override;
virtual void CallDelayedOnWorkerThread(std::unique_ptr<v8::Task> upTask, double delayInSeconds) override;
virtual std::unique_ptr<v8::JobHandle> PostJob(v8::TaskPriority priority, std::unique_ptr<v8::JobTask> upJobTask) override;
virtual double MonotonicallyIncreasingTime() override;
virtual double CurrentClockTimeMillis() override;
virtual v8::TracingController* GetTracingController() override;
private:
V8Platform();
static V8Platform ms_Instance;
static OnceFlag ms_InstallationFlag;
v8::TracingController m_TracingController;
};
//-----------------------------------------------------------------------------
V8Platform& V8Platform::GetInstance()
{
return ms_Instance;
}
//-----------------------------------------------------------------------------
void V8Platform::EnsureInstalled()
{
ms_InstallationFlag.CallOnce([]
{
v8::V8::InitializePlatform(&ms_Instance);
ASSERT_EVAL(v8::V8::Initialize());
if (!V8_SPLIT_PROXY_MANAGED_INVOKE_NOTHROW(StdBool, GetTopLevelAwait))
{
v8::V8::SetFlagsFromString("--no_harmony_top_level_await");
}
});
}
//-----------------------------------------------------------------------------
int V8Platform::NumberOfWorkerThreads()
{
return static_cast<int>(HighResolutionClock::GetHardwareConcurrency());
}
//-----------------------------------------------------------------------------
std::shared_ptr<v8::TaskRunner> V8Platform::GetForegroundTaskRunner(v8::Isolate* pIsolate)
{
return V8IsolateImpl::GetInstanceFromIsolate(pIsolate)->GetForegroundTaskRunner();
}
//-----------------------------------------------------------------------------
void V8Platform::CallOnWorkerThread(std::unique_ptr<v8::Task> upTask)
{
auto pIsolate = v8::Isolate::GetCurrent();
if (pIsolate == nullptr)
{
upTask->Run();
}
else
{
V8IsolateImpl::GetInstanceFromIsolate(pIsolate)->RunTaskAsync(std::move(upTask));
}
}
//-----------------------------------------------------------------------------
void V8Platform::CallDelayedOnWorkerThread(std::unique_ptr<v8::Task> upTask, double delayInSeconds)
{
auto pIsolate = v8::Isolate::GetCurrent();
if (pIsolate != nullptr)
{
V8IsolateImpl::GetInstanceFromIsolate(pIsolate)->RunTaskDelayed(std::move(upTask), delayInSeconds);
}
}
//-----------------------------------------------------------------------------
std::unique_ptr<v8::JobHandle> V8Platform::PostJob(v8::TaskPriority priority, std::unique_ptr<v8::JobTask> upJobTask)
{
return v8::platform::NewDefaultJobHandle(this, priority, std::move(upJobTask), NumberOfWorkerThreads());
}
//-----------------------------------------------------------------------------
double V8Platform::MonotonicallyIncreasingTime()
{
return HighResolutionClock::GetRelativeSeconds();
}
//-----------------------------------------------------------------------------
double V8Platform::CurrentClockTimeMillis()
{
return std::chrono::duration_cast<std::chrono::duration<double, std::milli>>(std::chrono::system_clock::now().time_since_epoch()).count();
}
//-----------------------------------------------------------------------------
v8::TracingController* V8Platform::GetTracingController()
{
return &m_TracingController;
}
//-----------------------------------------------------------------------------
V8Platform::V8Platform()
{
}
//-----------------------------------------------------------------------------
V8Platform V8Platform::ms_Instance;
OnceFlag V8Platform::ms_InstallationFlag;
//-----------------------------------------------------------------------------
// V8ForegroundTaskRunner
//-----------------------------------------------------------------------------
class V8ForegroundTaskRunner final: public v8::TaskRunner
{
PROHIBIT_COPY(V8ForegroundTaskRunner)
public:
V8ForegroundTaskRunner(V8IsolateImpl* pIsolateImpl);
virtual void PostTask(std::unique_ptr<v8::Task> upTask) override;
virtual void PostNonNestableTask(std::unique_ptr<v8::Task> upTask) override;
virtual void PostDelayedTask(std::unique_ptr<v8::Task> upTask, double delayInSeconds) override;
virtual void PostNonNestableDelayedTask(std::unique_ptr<v8::Task> upTask, double delayInSeconds) override;
virtual void PostIdleTask(std::unique_ptr<v8::IdleTask> upTask) override;
virtual bool IdleTasksEnabled() override;
virtual bool NonNestableTasksEnabled() const override;
virtual bool NonNestableDelayedTasksEnabled() const override;
private:
V8IsolateImpl* m_pIsolateImpl;
WeakRef<V8Isolate> m_wrIsolate;
};
//-----------------------------------------------------------------------------
V8ForegroundTaskRunner::V8ForegroundTaskRunner(V8IsolateImpl* pIsolateImpl):
m_pIsolateImpl(pIsolateImpl),
m_wrIsolate(pIsolateImpl->CreateWeakRef())
{
}
//-----------------------------------------------------------------------------
void V8ForegroundTaskRunner::PostTask(std::unique_ptr<v8::Task> upTask)
{
auto spIsolate = m_wrIsolate.GetTarget();
if (spIsolate.IsEmpty())
{
upTask->Run();
}
else
{
m_pIsolateImpl->RunTaskWithLockAsync(true /*allowNesting*/, std::move(upTask));
}
}
//-----------------------------------------------------------------------------
void V8ForegroundTaskRunner::PostNonNestableTask(std::unique_ptr<v8::Task> upTask)
{
auto spIsolate = m_wrIsolate.GetTarget();
if (!spIsolate.IsEmpty())
{
m_pIsolateImpl->RunTaskWithLockAsync(false /*allowNesting*/, std::move(upTask));
}
}
//-----------------------------------------------------------------------------
void V8ForegroundTaskRunner::PostDelayedTask(std::unique_ptr<v8::Task> upTask, double delayInSeconds)
{
auto spIsolate = m_wrIsolate.GetTarget();
if (!spIsolate.IsEmpty())
{
m_pIsolateImpl->RunTaskWithLockDelayed(true /*allowNesting*/, std::move(upTask), delayInSeconds);
}
}
//-----------------------------------------------------------------------------
void V8ForegroundTaskRunner::PostNonNestableDelayedTask(std::unique_ptr<v8::Task> upTask, double delayInSeconds)
{
auto spIsolate = m_wrIsolate.GetTarget();
if (!spIsolate.IsEmpty())
{
m_pIsolateImpl->RunTaskWithLockDelayed(false /*allowNesting*/, std::move(upTask), delayInSeconds);
}
}
//-----------------------------------------------------------------------------
void V8ForegroundTaskRunner::PostIdleTask(std::unique_ptr<v8::IdleTask> /*upTask*/)
{
// unexpected call to unsupported method
std::terminate();
}
//-----------------------------------------------------------------------------
bool V8ForegroundTaskRunner::IdleTasksEnabled()
{
return false;
}
//-----------------------------------------------------------------------------
bool V8ForegroundTaskRunner::NonNestableTasksEnabled() const
{
return true;
}
//-----------------------------------------------------------------------------
bool V8ForegroundTaskRunner::NonNestableDelayedTasksEnabled() const
{
return true;
}
//-----------------------------------------------------------------------------
// V8ArrayBufferAllocator
//-----------------------------------------------------------------------------
class V8ArrayBufferAllocator final: public v8::ArrayBuffer::Allocator
{
public:
static V8ArrayBufferAllocator& GetInstance();
virtual void* Allocate(size_t size) override;
virtual void* AllocateUninitialized(size_t size) override;
virtual void Free(void* pvData, size_t size) override;
private:
V8ArrayBufferAllocator();
static V8ArrayBufferAllocator ms_Instance;
};
//-----------------------------------------------------------------------------
V8ArrayBufferAllocator& V8ArrayBufferAllocator::GetInstance()
{
return ms_Instance;
}
//-----------------------------------------------------------------------------
void* V8ArrayBufferAllocator::Allocate(size_t size)
{
auto pIsolate = v8::Isolate::GetCurrent();
if (pIsolate)
{
return V8IsolateImpl::GetInstanceFromIsolate(pIsolate)->AllocateArrayBuffer(size);
}
return nullptr;
}
//-----------------------------------------------------------------------------
void* V8ArrayBufferAllocator::AllocateUninitialized(size_t size)
{
auto pIsolate = v8::Isolate::GetCurrent();
if (pIsolate)
{
return V8IsolateImpl::GetInstanceFromIsolate(pIsolate)->AllocateUninitializedArrayBuffer(size);
}
return nullptr;
}
//-----------------------------------------------------------------------------
void V8ArrayBufferAllocator::Free(void* pvData, size_t size)
{
auto pIsolate = v8::Isolate::GetCurrent();
if (pIsolate)
{
V8IsolateImpl::GetInstanceFromIsolate(pIsolate)->FreeArrayBuffer(pvData, size);
}
}
//-----------------------------------------------------------------------------
V8ArrayBufferAllocator::V8ArrayBufferAllocator()
{
}
//-----------------------------------------------------------------------------
V8ArrayBufferAllocator V8ArrayBufferAllocator::ms_Instance;
//-----------------------------------------------------------------------------
// V8OutputStream
//-----------------------------------------------------------------------------
class V8OutputStream final: public v8::OutputStream
{
PROHIBIT_COPY(V8OutputStream)
public:
explicit V8OutputStream(void* pvStream):
m_pvStream(pvStream)
{
}
virtual int GetChunkSize() override;
virtual WriteResult WriteAsciiChunk(char* pData, int size) override;
virtual void EndOfStream() override;
private:
void* m_pvStream;
};
//-----------------------------------------------------------------------------
int V8OutputStream::GetChunkSize()
{
return 64 * 1024;
}
//-----------------------------------------------------------------------------
V8OutputStream::WriteResult V8OutputStream::WriteAsciiChunk(char* pData, int size)
{
try
{
V8_SPLIT_PROXY_MANAGED_INVOKE_VOID(WriteBytesToStream, m_pvStream, reinterpret_cast<uint8_t*>(pData), size);
return kContinue;
}
catch (const HostException& exception)
{
V8_SPLIT_PROXY_MANAGED_INVOKE_VOID(ScheduleForwardingException, exception.GetException());
return kAbort;
}
}
//-----------------------------------------------------------------------------
void V8OutputStream::EndOfStream()
{
}
//-----------------------------------------------------------------------------
// V8IsolateImpl implementation
//-----------------------------------------------------------------------------
#define BEGIN_ISOLATE_NATIVE_SCOPE \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
NativeScope t_IsolateNativeScope(*this); \
DEFAULT_WARNING(4456)
#define END_ISOLATE_NATIVE_SCOPE \
IGNORE_UNUSED(t_IsolateNativeScope); \
}
#define BEGIN_ISOLATE_SCOPE \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
Scope t_IsolateScope(*this); \
DEFAULT_WARNING(4456)
#define END_ISOLATE_SCOPE \
IGNORE_UNUSED(t_IsolateScope); \
}
//-----------------------------------------------------------------------------
static std::atomic<size_t> s_InstanceCount(0);
static const int s_ContextGroupId = 1;
static const size_t s_StackBreathingRoom = static_cast<size_t>(16 * 1024);
static size_t* const s_pMinStackLimit = reinterpret_cast<size_t*>(sizeof(size_t));
//-----------------------------------------------------------------------------
V8IsolateImpl::V8IsolateImpl(const StdString& name, const v8::ResourceConstraints* pConstraints, const Options& options):
m_Name(name),
m_CallWithLockLevel(0),
m_DebuggingEnabled(false),
m_MaxArrayBufferAllocation(options.MaxArrayBufferAllocation),
m_ArrayBufferAllocation(0),
m_MaxHeapSize(0),
m_HeapSizeSampleInterval(0.0),
m_HeapWatchLevel(0),
m_HeapExpansionMultiplier(options.HeapExpansionMultiplier),
m_MaxStackUsage(0),
m_EnableInterruptPropagation(false),
m_CpuProfileSampleInterval(1000U),
m_StackWatchLevel(0),
m_pStackLimit(nullptr),
m_pExecutionScope(nullptr),
m_pDocumentInfo(nullptr),
m_IsOutOfMemory(false),
m_IsExecutionTerminating(false),
m_Released(false)
{
V8Platform::EnsureInstalled();
v8::Isolate::CreateParams params;
params.array_buffer_allocator = &V8ArrayBufferAllocator::GetInstance();
if (pConstraints != nullptr)
{
params.constraints.set_max_young_generation_size_in_bytes(pConstraints->max_young_generation_size_in_bytes());
params.constraints.set_max_old_generation_size_in_bytes(pConstraints->max_old_generation_size_in_bytes());
}
m_upIsolate.reset(v8::Isolate::Allocate());
m_upIsolate->SetData(0, this);
BEGIN_ADDREF_SCOPE
v8::Isolate::Initialize(m_upIsolate.get(), params);
m_upIsolate->AddNearHeapLimitCallback(HeapExpansionCallback, this);
m_upIsolate->AddBeforeCallEnteredCallback(OnBeforeCallEntered);
m_upIsolate->SetPromiseHook(PromiseHook);
BEGIN_ISOLATE_SCOPE
m_upIsolate->SetCaptureStackTraceForUncaughtExceptions(true, 64, v8::StackTrace::kDetailed);
m_hHostObjectHolderKey = CreatePersistent(CreatePrivate());
if (options.EnableDebugging)
{
EnableDebugging(options.DebugPort, options.EnableRemoteDebugging);
}
m_upIsolate->SetHostInitializeImportMetaObjectCallback(ImportMetaInitializeCallback);
if (options.EnableDynamicModuleImports)
{
m_upIsolate->SetHostImportModuleDynamicallyCallback(ModuleImportCallback);
}
END_ISOLATE_SCOPE
END_ADDREF_SCOPE
++s_InstanceCount;
}
//-----------------------------------------------------------------------------
V8IsolateImpl* V8IsolateImpl::GetInstanceFromIsolate(v8::Isolate* pIsolate)
{
_ASSERTE(pIsolate);
return static_cast<V8IsolateImpl*>(pIsolate->GetData(0));
}
//-----------------------------------------------------------------------------
size_t V8IsolateImpl::GetInstanceCount()
{
return s_InstanceCount;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::AddContext(V8ContextImpl* pContextImpl, const V8Context::Options& options)
{
_ASSERTE(IsCurrent() && IsLocked());
if (!options.EnableDebugging)
{
m_ContextEntries.emplace_back(pContextImpl);
}
else
{
m_ContextEntries.emplace_front(pContextImpl);
EnableDebugging(options.DebugPort, options.EnableRemoteDebugging);
}
if (options.EnableDynamicModuleImports)
{
m_upIsolate->SetHostImportModuleDynamicallyCallback(ModuleImportCallback);
}
if (m_upInspector)
{
m_upInspector->contextCreated(v8_inspector::V8ContextInfo(pContextImpl->GetContext(), s_ContextGroupId, pContextImpl->GetName().GetStringView()));
}
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::RemoveContext(V8ContextImpl* pContextImpl)
{
_ASSERTE(IsCurrent() && IsLocked());
if (m_upInspector)
{
m_upInspector->contextDestroyed(pContextImpl->GetContext());
}
m_ContextEntries.remove_if([pContextImpl] (const ContextEntry& contextEntry)
{
return contextEntry.pContextImpl == pContextImpl;
});
}
//-----------------------------------------------------------------------------
V8ContextImpl* V8IsolateImpl::FindContext(v8::Local<v8::Context> hContext)
{
_ASSERTE(IsCurrent() && IsLocked());
for (const auto& entry : m_ContextEntries)
{
if (entry.pContextImpl->GetContext() == hContext)
{
return entry.pContextImpl;
}
}
return nullptr;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::EnableDebugging(int port, bool remote)
{
_ASSERTE(IsCurrent() && IsLocked());
if (!m_DebuggingEnabled)
{
const char* pVersion = v8::V8::GetVersion();
StdString version(v8_inspector::StringView(reinterpret_cast<const uint8_t*>(pVersion), strlen(pVersion)));
if (port < 1)
{
port = 9222;
}
auto wrIsolate = CreateWeakRef();
m_pvDebugAgent = HostObjectUtil::GetInstance().CreateDebugAgent(m_Name, version, port, remote, [this, wrIsolate] (IHostObjectUtil::DebugDirective directive, const StdString* pCommand)
{
auto spIsolate = wrIsolate.GetTarget();
if (!spIsolate.IsEmpty())
{
if (directive == IHostObjectUtil::DebugDirective::ConnectClient)
{
ConnectDebugClient();
}
else if ((directive == IHostObjectUtil::DebugDirective::SendCommand) && pCommand)
{
SendDebugCommand(*pCommand);
}
else if (directive == IHostObjectUtil::DebugDirective::DisconnectClient)
{
DisconnectDebugClient();
}
}
});
m_upInspector = v8_inspector::V8Inspector::create(m_upIsolate.get(), this);
m_DebuggingEnabled = true;
m_DebugPort = port;
}
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::DisableDebugging()
{
_ASSERTE(IsCurrent() && IsLocked());
if (m_DebuggingEnabled)
{
m_upInspectorSession.reset();
m_upInspector.reset();
HostObjectUtil::GetInstance().DestroyDebugAgent(m_pvDebugAgent);
m_DebuggingEnabled = false;
}
}
//-----------------------------------------------------------------------------
size_t V8IsolateImpl::GetMaxHeapSize()
{
return m_MaxHeapSize;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::SetMaxHeapSize(size_t value)
{
m_MaxHeapSize = value;
m_IsOutOfMemory = false;
}
//-----------------------------------------------------------------------------
double V8IsolateImpl::GetHeapSizeSampleInterval()
{
return m_HeapSizeSampleInterval;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::SetHeapSizeSampleInterval(double value)
{
m_HeapSizeSampleInterval = value;
}
//-----------------------------------------------------------------------------
size_t V8IsolateImpl::GetMaxStackUsage()
{
return m_MaxStackUsage;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::SetMaxStackUsage(size_t value)
{
m_MaxStackUsage = value;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::AwaitDebuggerAndPause()
{
BEGIN_ISOLATE_SCOPE
if (m_DebuggingEnabled)
{
if (!m_upInspectorSession)
{
auto exitReason = RunMessageLoop(RunMessageLoopReason::AwaitingDebugger);
switch (exitReason)
{
case ExitMessageLoopReason::TerminatedExecution:
throw V8Exception(V8Exception::Type::Interrupt, m_Name, StdString(SL("Script execution interrupted by host while awaiting debugger connection")), false);
case ExitMessageLoopReason::CanceledAwaitDebugger:
return;
default:
_ASSERTE(exitReason == ExitMessageLoopReason::ResumedExecution);
}
}
_ASSERTE(m_upInspectorSession);
if (m_upInspectorSession)
{
StdString breakReason(SL("Break on debugger connection"));
m_upInspectorSession->schedulePauseOnNextStatement(breakReason.GetStringView(), breakReason.GetStringView());
}
}
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::CancelAwaitDebugger()
{
BEGIN_MUTEX_SCOPE(m_DataMutex)
if (m_optRunMessageLoopReason == RunMessageLoopReason::AwaitingDebugger)
{
m_optExitMessageLoopReason = ExitMessageLoopReason::CanceledAwaitDebugger;
m_CallWithLockQueueChanged.notify_one();
}
END_MUTEX_SCOPE
}
//-----------------------------------------------------------------------------
V8ScriptHolder* V8IsolateImpl::Compile(const V8DocumentInfo& documentInfo, StdString&& code)
{
BEGIN_ISOLATE_SCOPE
SharedPtr<V8ContextImpl> spContextImpl((m_ContextEntries.size() > 0) ? m_ContextEntries.front().pContextImpl : new V8ContextImpl(this, m_Name));
return spContextImpl->Compile(documentInfo, std::move(code));
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
V8ScriptHolder* V8IsolateImpl::Compile(const V8DocumentInfo& documentInfo, StdString&& code, V8CacheType cacheType, std::vector<uint8_t>& cacheBytes)
{
BEGIN_ISOLATE_SCOPE
SharedPtr<V8ContextImpl> spContextImpl((m_ContextEntries.size() > 0) ? m_ContextEntries.front().pContextImpl : new V8ContextImpl(this, m_Name));
return spContextImpl->Compile(documentInfo, std::move(code), cacheType, cacheBytes);
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
V8ScriptHolder* V8IsolateImpl::Compile(const V8DocumentInfo& documentInfo, StdString&& code, V8CacheType cacheType, const std::vector<uint8_t>& cacheBytes, bool& cacheAccepted)
{
BEGIN_ISOLATE_SCOPE
SharedPtr<V8ContextImpl> spContextImpl((m_ContextEntries.size() > 0) ? m_ContextEntries.front().pContextImpl : new V8ContextImpl(this, m_Name));
return spContextImpl->Compile(documentInfo, std::move(code), cacheType, cacheBytes, cacheAccepted);
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
bool V8IsolateImpl::GetEnableInterruptPropagation()
{
return m_EnableInterruptPropagation;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::SetEnableInterruptPropagation(bool value)
{
m_EnableInterruptPropagation = value;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::GetHeapStatistics(v8::HeapStatistics& heapStatistics)
{
BEGIN_ISOLATE_SCOPE
m_upIsolate->GetHeapStatistics(&heapStatistics);
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
V8Isolate::Statistics V8IsolateImpl::GetStatistics()
{
BEGIN_ISOLATE_SCOPE
BEGIN_MUTEX_SCOPE(m_DataMutex)
return m_Statistics;
END_MUTEX_SCOPE
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::CollectGarbage(bool exhaustive)
{
BEGIN_ISOLATE_SCOPE
if (exhaustive)
{
ClearScriptCache();
LowMemoryNotification();
}
else
{
while (!IdleNotificationDeadline(V8Platform::GetInstance().MonotonicallyIncreasingTime() + 0.1));
}
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
bool V8IsolateImpl::BeginCpuProfile(const StdString& name, v8::CpuProfilingMode mode, bool recordSamples)
{
BEGIN_ISOLATE_SCOPE
if (!m_upCpuProfiler)
{
m_upCpuProfiler.reset(v8::CpuProfiler::New(m_upIsolate.get()));
}
v8::Local<v8::String> hName;
if (!CreateString(name).ToLocal(&hName))
{
return false;
}
m_upCpuProfiler->StartProfiling(hName, mode, recordSamples);
return true;
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
bool V8IsolateImpl::EndCpuProfile(const StdString& name, CpuProfileCallback* pCallback, void* pvArg)
{
BEGIN_ISOLATE_SCOPE
if (!m_upCpuProfiler)
{
return false;
}
v8::Local<v8::String> hName;
if (!CreateString(name).ToLocal(&hName))
{
return false;
}
UniqueDeletePtr<v8::CpuProfile> upProfile(m_upCpuProfiler->StopProfiling(hName));
if (!upProfile)
{
return false;
}
if (pCallback)
{
pCallback(*upProfile, pvArg);
}
return true;
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::CollectCpuProfileSample()
{
BEGIN_ISOLATE_SCOPE
v8::CpuProfiler::CollectSample(m_upIsolate.get());
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
uint32_t V8IsolateImpl::GetCpuProfileSampleInterval()
{
return m_CpuProfileSampleInterval;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::SetCpuProfileSampleInterval(uint32_t value)
{
BEGIN_ISOLATE_SCOPE
if (value != m_CpuProfileSampleInterval)
{
m_CpuProfileSampleInterval = std::min(std::max(value, 125U), static_cast<uint32_t>(INT_MAX));
if (!m_upCpuProfiler)
{
m_upCpuProfiler.reset(v8::CpuProfiler::New(m_upIsolate.get()));
}
m_upCpuProfiler->SetSamplingInterval(static_cast<int>(m_CpuProfileSampleInterval));
}
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::WriteHeapSnapshot(void* pvStream)
{
BEGIN_ISOLATE_SCOPE
auto pSnapshot = m_upIsolate->GetHeapProfiler()->TakeHeapSnapshot();
V8OutputStream stream(pvStream);
pSnapshot->Serialize(&stream);
const_cast<v8::HeapSnapshot*>(pSnapshot)->Delete();
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::runMessageLoopOnPause(int /*contextGroupId*/)
{
RunMessageLoop(RunMessageLoopReason::PausedInDebugger);
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::quitMessageLoopOnPause()
{
_ASSERTE(IsCurrent() && IsLocked());
BEGIN_MUTEX_SCOPE(m_DataMutex)
m_optExitMessageLoopReason = ExitMessageLoopReason::ResumedExecution;
END_MUTEX_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::runIfWaitingForDebugger(int /*contextGroupId*/)
{
quitMessageLoopOnPause();
}
//-----------------------------------------------------------------------------
v8::Local<v8::Context> V8IsolateImpl::ensureDefaultContextInGroup(int contextGroupId)
{
_ASSERTE(IsCurrent() && IsLocked());
if (m_ContextEntries.size() > 0)
{
return m_ContextEntries.front().pContextImpl->GetContext();
}
return v8_inspector::V8InspectorClient::ensureDefaultContextInGroup(contextGroupId);
}
//-----------------------------------------------------------------------------
double V8IsolateImpl::currentTimeMS()
{
return HighResolutionClock::GetRelativeSeconds() * 1000;
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::sendResponse(int /*callId*/, std::unique_ptr<v8_inspector::StringBuffer> upMessage)
{
_ASSERTE(IsCurrent() && IsLocked());
if (m_pvDebugAgent)
{
HostObjectUtil::GetInstance().SendDebugMessage(m_pvDebugAgent, StdString(upMessage->string()));
}
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::sendNotification(std::unique_ptr<v8_inspector::StringBuffer> upMessage)
{
sendResponse(0, std::move(upMessage));
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::flushProtocolNotifications()
{
}
//-----------------------------------------------------------------------------
void* V8IsolateImpl::AddRefV8Object(void* pvObject)
{
BEGIN_ISOLATE_SCOPE
return ::PtrFromHandle(CreatePersistent(::HandleFromPtr<v8::Object>(pvObject)));
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8IsolateImpl::ReleaseV8Object(void* pvObject)
{
CallWithLockNoWait(true /*allowNesting*/, [pvObject] (V8IsolateImpl* pIsolateImpl)
{
pIsolateImpl->Dispose(::HandleFromPtr<v8::Object>(pvObject));
});
}