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 () override
std::unique_ptr< cppgc::JobHandle >	PostJob (cppgc::TaskPriority priority, std::unique_ptr< cppgc::JobTask > job_task) override
TracingController *	GetTracingController () override
Public Member Functions inherited from Platform
virtual	~Platform ()=default
virtual std::unique_ptr< JobHandle >	PostJob (TaskPriority priority, std::unique_ptr< JobTask > job_task)

Static Public Member Functions
static void	InitializeProcess (DefaultPlatform *platform)
Static Public Member Functions inherited from Platform
static constexpr bool	StackAddressesSmallerThanHeapAddresses ()

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 21 of file default-platform.h.

Member Typedef Documentation

IdleTaskSupport

using IdleTaskSupport = v8::platform::IdleTaskSupport

Definition at line 32 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 33 of file default-platform.h.

Member Function Documentation

GetForegroundTaskRunner()

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

inlineoverridevirtual

Foreground task runner that should be used by a Heap.

Reimplemented from Platform.

Definition at line 50 of file default-platform.h.

References Platform::GetForegroundTaskRunner(), DefaultPlatform::kNoIsolate, and DefaultPlatform::v8_platform_.

GetPageAllocator()

cppgc::PageAllocator* GetPageAllocator ( )

inlineoverridevirtual

Returns the allocator used by cppgc to allocate its heap and various support structures.

Implements Platform.

Definition at line 42 of file default-platform.h.

References Platform::GetPageAllocator(), and DefaultPlatform::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 63 of file default-platform.h.

References Platform::GetTracingController(), and DefaultPlatform::v8_platform_.

InitializeProcess()

static void InitializeProcess ( DefaultPlatform *  platform )

static

Use this method instead of 'cppgc::InitializeProcess' when using 'cppgc::DefaultPlatform'. 'cppgc::DefaultPlatform::InitializeProcess' will initialize cppgc and v8 if needed (for non-standalone builds).

Parameters

platform

DefaultPlatform instance used to initialize cppgc/v8.

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 46 of file default-platform.h.

References Platform::MonotonicallyIncreasingTime(), and DefaultPlatform::v8_platform_.

PostJob()

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

inlineoverride

Definition at line 57 of file default-platform.h.

References Platform::PostJob(), and DefaultPlatform::v8_platform_.

Field Documentation

kNoIsolate

constexpr v8::Isolate* kNoIsolate = nullptr

staticconstexprprotected

Definition at line 68 of file default-platform.h.

Referenced by DefaultPlatform::GetForegroundTaskRunner().

v8_platform_

std::unique_ptr<v8::Platform> v8_platform_

protected

Definition at line 70 of file default-platform.h.

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

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

• include/cppgc/default-platform.h