DefaultPlatform Class Reference

#include <default-platform.h>

Inheritance diagram for DefaultPlatform:

Collaboration diagram for DefaultPlatform:

Public Types
using	IdleTaskSupport = v8::platform::IdleTaskSupport

Public Member Functions
	DefaultPlatform (int thread_pool_size=0, IdleTaskSupport idle_task_support=IdleTaskSupport::kDisabled, std::unique_ptr< TracingController > tracing_controller={})
cppgc::PageAllocator *	GetPageAllocator () override
double	MonotonicallyIncreasingTime () override
std::shared_ptr< cppgc::TaskRunner >	GetForegroundTaskRunner (TaskPriority priority) override
std::unique_ptr< cppgc::JobHandle >	PostJob (cppgc::TaskPriority priority, std::unique_ptr< cppgc::JobTask > job_task) override
TracingController *	GetTracingController () override
v8::Platform *	GetV8Platform () const
Public Member Functions inherited from Platform
virtual	~Platform ()=default
virtual std::shared_ptr< TaskRunner >	GetForegroundTaskRunner ()
virtual std::unique_ptr< JobHandle >	PostJob (TaskPriority priority, std::unique_ptr< JobTask > job_task)

Protected Attributes
std::unique_ptr< v8::Platform >	v8_platform_

Static Protected Attributes
static constexpr v8::Isolate *	kNoIsolate = nullptr

Detailed Description

Platform provided by cppgc. Uses V8's DefaultPlatform provided by libplatform internally. Exception: GetForegroundTaskRunner(), see below.

Definition at line 20 of file default-platform.h.

Member Typedef Documentation

IdleTaskSupport

using IdleTaskSupport = v8::platform::IdleTaskSupport

Definition at line 22 of file default-platform.h.

Constructor & Destructor Documentation

DefaultPlatform()

DefaultPlatform ( int thread_pool_size = 0, IdleTaskSupport idle_task_support = IdleTaskSupport::kDisabled, std::unique_ptr< TracingController > tracing_controller = {} )

inlineexplicit

Definition at line 23 of file default-platform.h.

Member Function Documentation

GetForegroundTaskRunner()

std::shared_ptr< cppgc::TaskRunner > GetForegroundTaskRunner ( TaskPriority priority )

inlineoverridevirtual

Returns a TaskRunner with a specific |priority| which can be used to post a task on the foreground thread.

Reimplemented from Platform.

Definition at line 40 of file default-platform.h.

References kNoIsolate, and v8_platform_.

GetPageAllocator()

cppgc::PageAllocator * GetPageAllocator ( )

inlineoverridevirtual

Returns

the allocator used by cppgc to allocate its heap and various support structures. Returning nullptr results in using the PageAllocator provided by cppgc::InitializeProcess() instead.

Implements Platform.

Definition at line 32 of file default-platform.h.

References v8_platform_.

GetTracingController()

TracingController * GetTracingController ( )

inlineoverridevirtual

Returns an instance of a TracingController. This must be non-nullptr. The default implementation returns an empty TracingController that consumes trace data without effect.

Reimplemented from Platform.

Definition at line 54 of file default-platform.h.

References v8_platform_.

GetV8Platform()

v8::Platform * GetV8Platform ( ) const

inline

Definition at line 58 of file default-platform.h.

References v8_platform_.

MonotonicallyIncreasingTime()

double MonotonicallyIncreasingTime ( )

inlineoverridevirtual

Monotonically increasing time in seconds from an arbitrary fixed point in the past. This function is expected to return at least millisecond-precision values. For this reason, it is recommended that the fixed point be no further in the past than the epoch.

Implements Platform.

Definition at line 36 of file default-platform.h.

References v8_platform_.

PostJob()

std::unique_ptr< cppgc::JobHandle > PostJob ( cppgc::TaskPriority priority, std::unique_ptr< cppgc::JobTask > job_task )

inlineoverride

Definition at line 48 of file default-platform.h.

References v8_platform_.

Field Documentation

kNoIsolate

v8::Isolate* kNoIsolate = nullptr

staticconstexprprotected

Definition at line 61 of file default-platform.h.

Referenced by GetForegroundTaskRunner().

v8_platform_

std::unique_ptr<v8::Platform> v8_platform_

protected

Definition at line 63 of file default-platform.h.

Referenced by GetForegroundTaskRunner(), GetPageAllocator(), GetTracingController(), GetV8Platform(), MonotonicallyIncreasingTime(), and PostJob().

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The documentation for this class was generated from the following file:

• include/cppgc/default-platform.h