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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
();
void
EnsureInitialized
();
V8GlobalFlags
GetGlobalFlags
()
const
;
virtual
v8::PageAllocator*
GetPageAllocator
()
override
;
virtual
int
NumberOfWorkerThreads
()
override
;
virtual
std::shared_ptr<v8::TaskRunner>
GetForegroundTaskRunner
(v8::Isolate* pIsolate, v8::TaskPriority priority)
override
;
virtual
double
MonotonicallyIncreasingTime
()
override
;
virtual
double
CurrentClockTimeMillis
()
override
;
virtual
v8::TracingController*
GetTracingController
()
override
;
protected:
virtual
std::unique_ptr<v8::JobHandle>
CreateJobImpl
(v8::TaskPriority priority, std::unique_ptr<v8::JobTask> upJobTask,
const
v8::SourceLocation& location)
override
;
virtual
void
PostTaskOnWorkerThreadImpl
(v8::TaskPriority priority, std::unique_ptr<v8::Task> upTask,
const
v8::SourceLocation& location)
override
;
virtual
void
PostDelayedTaskOnWorkerThreadImpl
(v8::TaskPriority priority, std::unique_ptr<v8::Task> upTask,
double
delayInSeconds,
const
v8::SourceLocation& location)
override
;
private:
V8Platform
();
static
V8Platform ms_Instance;
std::unique_ptr<v8::PageAllocator> m_upPageAllocator;
OnceFlag m_InitializationFlag;
V8GlobalFlags m_GlobalFlags;
v8::TracingController m_TracingController;
};
//
-----------------------------------------------------------------------------
V8Platform&
V8Platform::GetInstance
()
{
return
ms_Instance;
}
//
-----------------------------------------------------------------------------
V8GlobalFlags
V8Platform::GetGlobalFlags
()
const
{
return
m_GlobalFlags;
}
//
-----------------------------------------------------------------------------
void
V8Platform::EnsureInitialized
()
{
m_InitializationFlag.
CallOnce
([
this
]
{
v8::V8::InitializePlatform
(&ms_Instance);
m_GlobalFlags =
V8_SPLIT_PROXY_MANAGED_INVOKE_NOTHROW
(V8GlobalFlags, GetGlobalFlags);
std::vector<std::string> flagStrings;
flagStrings.
push_back
(
"
--no_memory_pool_share_memory_on_teardown
"
);
#
ifdef
CLEARSCRIPT_TOP_LEVEL_AWAIT_CONTROL
if
(!::
HasFlag
(globalFlags, V8GlobalFlags::EnableTopLevelAwait))
{
flagStrings.
push_back
(
"
--no_harmony_top_level_await
"
);
}
#
endif
//
CLEARSCRIPT_TOP_LEVEL_AWAIT_CONTROL
if
(::
HasFlag
(m_GlobalFlags, V8GlobalFlags::DisableJITCompilation))
{
flagStrings.
push_back
(
"
--jitless
"
);
}
if
(::
HasFlag
(m_GlobalFlags, V8GlobalFlags::DisableBackgroundWork))
{
flagStrings.
push_back
(
"
--single_threaded
"
);
}
if
(!::
HasFlag
(m_GlobalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
flagStrings.
push_back
(
"
--js_explicit_resource_management
"
);
}
if
(!flagStrings.
empty
())
{
std::string
flagsString
(flagStrings[
0
]);
for
(
size_t
index =
1
; index < flagStrings.
size
(); index++)
{
flagsString +=
"
"
;
flagsString += flagStrings[index];
}
v8::V8::SetFlagsFromString
(flagsString.
c_str
(), flagsString.
length
());
}
ASSERT_EVAL
(
v8::V8::Initialize
());
});
}
//
-----------------------------------------------------------------------------
v8::PageAllocator*
V8Platform::GetPageAllocator
()
{
return
m_upPageAllocator.
get
();
}
//
-----------------------------------------------------------------------------
int
V8Platform::NumberOfWorkerThreads
()
{
return
static_cast
<
int
>(
HighResolutionClock::GetHardwareConcurrency
());
}
//
-----------------------------------------------------------------------------
std::shared_ptr<v8::TaskRunner>
V8Platform::GetForegroundTaskRunner
(v8::Isolate* pIsolate, v8::TaskPriority
/*
priority
*/
)
{
return
V8IsolateImpl::GetInstanceFromIsolate
(pIsolate)->
GetForegroundTaskRunner
();
}
//
-----------------------------------------------------------------------------
std::unique_ptr<v8::JobHandle>
V8Platform::CreateJobImpl
(v8::TaskPriority priority, std::unique_ptr<v8::JobTask> upJobTask,
const
v8::SourceLocation&
/*
location
*/
)
{
return
v8::platform::NewDefaultJobHandle
(
this
, priority,
std::move
(upJobTask),
NumberOfWorkerThreads
());
}
//
-----------------------------------------------------------------------------
void
V8Platform::PostTaskOnWorkerThreadImpl
(v8::TaskPriority
/*
priority
*/
, std::unique_ptr<v8::Task> upTask,
const
v8::SourceLocation&
/*
location
*/
)
{
auto
pIsolate =
v8::Isolate::GetCurrent
();
if
(pIsolate ==
nullptr
)
{
upTask->
Run
();
}
else
{
V8IsolateImpl::GetInstanceFromIsolate
(pIsolate)->
RunTaskAsync
(
std::move
(upTask));
}
}
//
-----------------------------------------------------------------------------
void
V8Platform::PostDelayedTaskOnWorkerThreadImpl
(v8::TaskPriority
/*
priority
*/
, std::unique_ptr<v8::Task> upTask,
double
delayInSeconds,
const
v8::SourceLocation&
/*
location
*/
)
{
auto
pIsolate =
v8::Isolate::GetCurrent
();
if
(pIsolate !=
nullptr
)
{
V8IsolateImpl::GetInstanceFromIsolate
(pIsolate)->
RunTaskDelayed
(
std::move
(upTask), delayInSeconds);
}
}
//
-----------------------------------------------------------------------------
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
():
m_upPageAllocator(v8::platform::NewDefaultPageAllocator()),
m_GlobalFlags(V8GlobalFlags::None)
{
}
//
-----------------------------------------------------------------------------
V8Platform V8Platform::ms_Instance;
//
-----------------------------------------------------------------------------
//
V8ForegroundTaskRunner
//
-----------------------------------------------------------------------------
class
V8ForegroundTaskRunner
final
: public v8::TaskRunner
{
PROHIBIT_COPY
(V8ForegroundTaskRunner)
public:
V8ForegroundTaskRunner
(V8IsolateImpl& isolateImpl);
virtual
bool
IdleTasksEnabled
()
override
;
virtual
bool
NonNestableTasksEnabled
()
const
override
;
virtual
bool
NonNestableDelayedTasksEnabled
()
const
override
;
protected:
virtual
void
PostTaskImpl
(std::unique_ptr<v8::Task> upTask,
const
v8::SourceLocation& location)
override
;
virtual
void
PostNonNestableTaskImpl
(std::unique_ptr<v8::Task> upTask,
const
v8::SourceLocation& location)
override
;
virtual
void
PostDelayedTaskImpl
(std::unique_ptr<v8::Task> upTask,
double
delayInSeconds,
const
v8::SourceLocation& location)
override
;
virtual
void
PostNonNestableDelayedTaskImpl
(std::unique_ptr<v8::Task> upTask,
double
delayInSeconds,
const
v8::SourceLocation& location)
override
;
virtual
void
PostIdleTaskImpl
(std::unique_ptr<v8::IdleTask> upTask,
const
v8::SourceLocation& location)
override
;
private:
V8IsolateImpl& m_IsolateImpl;
WeakRef<V8Isolate> m_wrIsolate;
};
//
-----------------------------------------------------------------------------
V8ForegroundTaskRunner::V8ForegroundTaskRunner
(V8IsolateImpl& isolateImpl):
m_IsolateImpl(isolateImpl),
m_wrIsolate(isolateImpl.CreateWeakRef())
{
}
//
-----------------------------------------------------------------------------
bool
V8ForegroundTaskRunner::IdleTasksEnabled
()
{
return
false
;
}
//
-----------------------------------------------------------------------------
bool
V8ForegroundTaskRunner::NonNestableTasksEnabled
()
const
{
return
true
;
}
//
-----------------------------------------------------------------------------
bool
V8ForegroundTaskRunner::NonNestableDelayedTasksEnabled
()
const
{
return
true
;
}
//
-----------------------------------------------------------------------------
void
V8ForegroundTaskRunner::PostTaskImpl
(std::unique_ptr<v8::Task> upTask,
const
v8::SourceLocation&
/*
location
*/
)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(spIsolate.
IsEmpty
())
{
upTask->
Run
();
}
else
{
m_IsolateImpl.
RunTaskWithLockAsync
(
true
,
std::move
(upTask));
}
}
//
-----------------------------------------------------------------------------
void
V8ForegroundTaskRunner::PostNonNestableTaskImpl
(std::unique_ptr<v8::Task> upTask,
const
v8::SourceLocation&
/*
location
*/
)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
m_IsolateImpl.
RunTaskWithLockAsync
(
false
,
std::move
(upTask));
}
}
//
-----------------------------------------------------------------------------
void
V8ForegroundTaskRunner::PostDelayedTaskImpl
(std::unique_ptr<v8::Task> upTask,
double
delayInSeconds,
const
v8::SourceLocation&
/*
location
*/
)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
m_IsolateImpl.
RunTaskWithLockDelayed
(
true
,
std::move
(upTask), delayInSeconds);
}
}
//
-----------------------------------------------------------------------------
void
V8ForegroundTaskRunner::PostNonNestableDelayedTaskImpl
(std::unique_ptr<v8::Task> upTask,
double
delayInSeconds,
const
v8::SourceLocation&
/*
location
*/
)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
m_IsolateImpl.
RunTaskWithLockDelayed
(
false
,
std::move
(upTask), delayInSeconds);
}
}
//
-----------------------------------------------------------------------------
void
V8ForegroundTaskRunner::PostIdleTaskImpl
(std::unique_ptr<v8::IdleTask>
/*
upTask
*/
,
const
v8::SourceLocation&
/*
location
*/
)
{
//
unexpected call to unsupported method
std::terminate
();
}
//
-----------------------------------------------------------------------------
//
V8ArrayBufferAllocator
//
-----------------------------------------------------------------------------
class
V8ArrayBufferAllocator
final
: public v8::ArrayBuffer::Allocator
{
public:
V8ArrayBufferAllocator
(V8IsolateImpl& isolateImpl);
virtual
void
*
Allocate
(
size_t
size)
override
;
virtual
void
*
AllocateUninitialized
(
size_t
size)
override
;
virtual
void
Free
(
void
* pvData,
size_t
size)
override
;
private:
V8IsolateImpl& m_IsolateImpl;
WeakRef<V8Isolate> m_wrIsolate;
};
//
-----------------------------------------------------------------------------
V8ArrayBufferAllocator::V8ArrayBufferAllocator
(V8IsolateImpl& isolateImpl):
m_IsolateImpl(isolateImpl),
m_wrIsolate(isolateImpl.CreateWeakRef())
{
}
//
-----------------------------------------------------------------------------
void
*
V8ArrayBufferAllocator::Allocate
(
size_t
size)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
return
m_IsolateImpl.
AllocateArrayBuffer
(size);
}
return
nullptr
;
}
//
-----------------------------------------------------------------------------
void
*
V8ArrayBufferAllocator::AllocateUninitialized
(
size_t
size)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
return
m_IsolateImpl.
AllocateUninitializedArrayBuffer
(size);
}
return
nullptr
;
}
//
-----------------------------------------------------------------------------
void
V8ArrayBufferAllocator::Free
(
void
* pvData,
size_t
size)
{
auto
spIsolate = m_wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
m_IsolateImpl.
FreeArrayBuffer
(pvData, size);
}
else
if
(pvData)
{
::free
(pvData);
}
}
//
-----------------------------------------------------------------------------
//
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); \
}
#
define
BEGIN_PROMISE_HOOK_SCOPE
\
{ \
DISABLE_WARNING
(
4456
)
/*
declaration hides previous local declaration
*/
\
PromiseHookScope
t_PromiseHookScope
(*
this
); \
DEFAULT_WARNING
(
4456
)
#
define
END_PROMISE_HOOK_SCOPE
\
IGNORE_UNUSED
(t_PromiseHookScope); \
}
//
-----------------------------------------------------------------------------
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_DisableHeapSizeViolationInterrupt(
false
),
m_CpuProfileSampleInterval(
1000U
),
m_StackWatchLevel(
0
),
m_pStackLimit(
nullptr
),
m_IsExecutionTerminating(
false
),
m_pExecutionScope(
nullptr
),
m_pDocumentInfo(
nullptr
),
m_IsOutOfMemory(
false
),
m_Released(
false
)
{
V8Platform::GetInstance
().
EnsureInitialized
();
m_upIsolate.
reset
(
v8::Isolate::Allocate
());
m_upIsolate->
SetData
(
0
,
this
);
BEGIN_ADDREF_SCOPE
v8::Isolate::CreateParams params;
params.
array_buffer_allocator_shared
= std::make_shared<V8ArrayBufferAllocator>(*
this
);
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
());
}
v8::Isolate::Initialize
(m_upIsolate.
get
(), params);
m_upIsolate->
AddNearHeapLimitCallback
(HeapExpansionCallback,
this
);
m_upIsolate->
AddBeforeCallEnteredCallback
(OnBeforeCallEntered);
BEGIN_ISOLATE_SCOPE
m_upIsolate->
SetCaptureStackTraceForUncaughtExceptions
(
true
,
64
, v8::StackTrace::
kDetailed
);
m_hHostObjectHolderKey =
CreatePersistent
(
CreatePrivate
());
if
(::
HasFlag
(options.
Flags
, Flags::EnableDebugging))
{
EnableDebugging
(options.
DebugPort
, ::
HasFlag
(options.
Flags
, Flags::EnableRemoteDebugging));
}
m_upIsolate->
SetHostInitializeImportMetaObjectCallback
(ImportMetaInitializeCallback);
if
(::
HasFlag
(options.
Flags
, Flags::EnableDynamicModuleImports))
{
m_upIsolate->
SetHostImportModuleDynamicallyCallback
(ModuleImportCallback);
}
END_ISOLATE_SCOPE
END_ADDREF_SCOPE
++s_InstanceCount;
}
//
-----------------------------------------------------------------------------
V8GlobalFlags
V8IsolateImpl::GetGlobalFlags
()
{
return
V8Platform::GetInstance
().
GetGlobalFlags
();
}
//
-----------------------------------------------------------------------------
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
(!::
HasFlag
(options.
Flags
, V8Context::Flags::EnableDebugging))
{
m_ContextEntries.
emplace_back
(pContextImpl);
}
else
{
m_ContextEntries.
emplace_front
(pContextImpl);
EnableDebugging
(options.
DebugPort
, ::
HasFlag
(options.
Flags
, V8Context::Flags::EnableRemoteDebugging));
}
if
(::
HasFlag
(options.
Flags
, V8Context::Flags::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::CreateDebugAgent
(m_Name, version, port, remote, [
this
, wrIsolate] (HostObjectUtil::DebugDirective directive,
const
StdString* pCommand)
{
auto
spIsolate = wrIsolate.
GetTarget
();
if
(!spIsolate.
IsEmpty
())
{
if
(directive == HostObjectUtil::DebugDirective::ConnectClient)
{
ConnectDebugClient
();
}
else
if
((directive == HostObjectUtil::DebugDirective::SendCommand) && pCommand)
{
SendDebugCommand
(*pCommand);
}
else
if
(directive == HostObjectUtil::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::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 && !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.
empty
() ? 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, V8CacheKind cacheKind, std::vector<
uint8_t
>& cacheBytes)
{
BEGIN_ISOLATE_SCOPE
SharedPtr<V8ContextImpl>
spContextImpl
(!m_ContextEntries.
empty
() ? m_ContextEntries.
front
().
pContextImpl
:
new
V8ContextImpl
(
this
, m_Name));
return
spContextImpl->
Compile
(documentInfo,
std::move
(code), cacheKind, cacheBytes);
END_ISOLATE_SCOPE
}
//
-----------------------------------------------------------------------------
V8ScriptHolder*
V8IsolateImpl::Compile
(
const
V8DocumentInfo& documentInfo, StdString&& code, V8CacheKind cacheKind,
const
std::vector<
uint8_t
>& cacheBytes,
bool
& cacheAccepted)
{
BEGIN_ISOLATE_SCOPE
SharedPtr<V8ContextImpl>
spContextImpl
(!m_ContextEntries.
empty
() ? m_ContextEntries.
front
().
pContextImpl
:
new
V8ContextImpl
(
this
, m_Name));
return
spContextImpl->
Compile
(documentInfo,
std::move
(code), cacheKind, cacheBytes, cacheAccepted);
END_ISOLATE_SCOPE
}
//
-----------------------------------------------------------------------------
V8ScriptHolder*
V8IsolateImpl::Compile
(
const
V8DocumentInfo& documentInfo, StdString&& code, V8CacheKind cacheKind, std::vector<
uint8_t
>& cacheBytes, V8CacheResult& cacheResult)
{
BEGIN_ISOLATE_SCOPE
SharedPtr<V8ContextImpl>
spContextImpl
(!m_ContextEntries.
empty
() ? m_ContextEntries.
front
().
pContextImpl
:
new
V8ContextImpl
(
this
, m_Name));
return
spContextImpl->
Compile
(documentInfo,
std::move
(code), cacheKind, cacheBytes, cacheResult);
END_ISOLATE_SCOPE
}
//
-----------------------------------------------------------------------------
bool
V8IsolateImpl::GetEnableInterruptPropagation
()
{
return
m_EnableInterruptPropagation;
}
//
-----------------------------------------------------------------------------
void
V8IsolateImpl::SetEnableInterruptPropagation
(
bool
value)
{
m_EnableInterruptPropagation = value;
}
//
-----------------------------------------------------------------------------
bool
V8IsolateImpl::GetDisableHeapSizeViolationInterrupt
()
{
return
m_DisableHeapSizeViolationInterrupt;
}
//
-----------------------------------------------------------------------------
void
V8IsolateImpl::SetDisableHeapSizeViolationInterrupt
(
bool
value)
{
m_DisableHeapSizeViolationInterrupt = 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
();
ClearCachesForTesting
();
}
CollectGarbageInternal
(exhaustive);
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
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