v8::platform::tracing::TracingController Class Reference

#include <v8-tracing.h>

Inheritance diagram for v8::platform::tracing::TracingController:

Collaboration diagram for v8::platform::tracing::TracingController:

Public Types
enum	CategoryGroupEnabledFlags { ENABLED_FOR_RECORDING = 1 << 0 , ENABLED_FOR_EVENT_CALLBACK = 1 << 2 , ENABLED_FOR_ETW_EXPORT = 1 << 3 }

Public Member Functions
	TracingController ()
	~TracingController () override
void	Initialize (TraceBuffer *trace_buffer)
const uint8_t *	GetCategoryGroupEnabled (const char *category_group) override
uint64_t	AddTraceEvent (char phase, const uint8_t *category_enabled_flag, const char *name, const char *scope, uint64_t id, uint64_t bind_id, int32_t num_args, const char **arg_names, const uint8_t *arg_types, const uint64_t *arg_values, std::unique_ptr< v8::ConvertableToTraceFormat > *arg_convertables, unsigned int flags) override
uint64_t	AddTraceEventWithTimestamp (char phase, const uint8_t *category_enabled_flag, const char *name, const char *scope, uint64_t id, uint64_t bind_id, int32_t num_args, const char **arg_names, const uint8_t *arg_types, const uint64_t *arg_values, std::unique_ptr< v8::ConvertableToTraceFormat > *arg_convertables, unsigned int flags, int64_t timestamp) override
void	UpdateTraceEventDuration (const uint8_t *category_enabled_flag, const char *name, uint64_t handle) override
void	AddTraceStateObserver (v8::TracingController::TraceStateObserver *observer) override
void	RemoveTraceStateObserver (v8::TracingController::TraceStateObserver *observer) override
void	StartTracing (TraceConfig *trace_config)
void	StopTracing ()
virtual	~TracingController ()=default
virtual const uint8_t *	GetCategoryGroupEnabled (const char *name)
virtual uint64_t	AddTraceEvent (char phase, const uint8_t *category_enabled_flag, const char *name, const char *scope, uint64_t id, uint64_t bind_id, int32_t num_args, const char **arg_names, const uint8_t *arg_types, const uint64_t *arg_values, std::unique_ptr< ConvertableToTraceFormat > *arg_convertables, unsigned int flags)
virtual uint64_t	AddTraceEventWithTimestamp (char phase, const uint8_t *category_enabled_flag, const char *name, const char *scope, uint64_t id, uint64_t bind_id, int32_t num_args, const char **arg_names, const uint8_t *arg_types, const uint64_t *arg_values, std::unique_ptr< ConvertableToTraceFormat > *arg_convertables, unsigned int flags, int64_t timestamp)
virtual void	UpdateTraceEventDuration (const uint8_t *category_enabled_flag, const char *name, uint64_t handle)
virtual void	AddTraceStateObserver (TraceStateObserver *)
virtual void	RemoveTraceStateObserver (TraceStateObserver *)

Static Public Member Functions
static const char *	GetCategoryGroupName (const uint8_t *category_enabled_flag)

Protected Member Functions
virtual int64_t	CurrentTimestampMicroseconds ()
virtual int64_t	CurrentCpuTimestampMicroseconds ()

Detailed Description

V8 Tracing controller default implementation.

Will become obsolete in Perfetto build (v8_use_perfetto_json_export = true).

Member Enumeration Documentation

CategoryGroupEnabledFlags

enum v8::platform::tracing::TracingController::CategoryGroupEnabledFlags

Enumerator
ENABLED_FOR_RECORDING
ENABLED_FOR_EVENT_CALLBACK
ENABLED_FOR_ETW_EXPORT

Constructor & Destructor Documentation

TracingController()

v8::platform::tracing::TracingController::TracingController

(

)

~TracingController()

v8::platform::tracing::TracingController::~TracingController ( )

overridevirtual

Reimplemented from v8::TracingController.

Member Function Documentation

AddTraceEvent()

uint64_t v8::platform::tracing::TracingController::AddTraceEvent ( char  phase, const uint8_t *  category_enabled_flag, const char *  name, const char *  scope, uint64_t  id, uint64_t  bind_id, int32_t  num_args, const char **  arg_names, const uint8_t *  arg_types, const uint64_t *  arg_values, std::unique_ptr< v8::ConvertableToTraceFormat > *  arg_convertables, unsigned int  flags  )

overridevirtual

Adds a trace event to the platform tracing system. These function calls are usually the result of a TRACE_* macro from trace-event-no-perfetto.h when tracing and the category of the particular trace are enabled. It is not advisable to call these functions on their own; they are really only meant to be used by the trace macros. The returned handle can be used by UpdateTraceEventDuration to update the duration of COMPLETE events.

Reimplemented from v8::TracingController.

AddTraceEventWithTimestamp()

uint64_t v8::platform::tracing::TracingController::AddTraceEventWithTimestamp ( char  phase, const uint8_t *  category_enabled_flag, const char *  name, const char *  scope, uint64_t  id, uint64_t  bind_id, int32_t  num_args, const char **  arg_names, const uint8_t *  arg_types, const uint64_t *  arg_values, std::unique_ptr< v8::ConvertableToTraceFormat > *  arg_convertables, unsigned int  flags, int64_t  timestamp  )

overridevirtual

Reimplemented from v8::TracingController.

AddTraceStateObserver()

void v8::platform::tracing::TracingController::AddTraceStateObserver ( v8::TracingController::TraceStateObserver *  )

overridevirtual

Adds tracing state change observer. Does nothing in Perfetto SDK build (v8_use_perfetto = true).

Reimplemented from v8::TracingController.

CurrentCpuTimestampMicroseconds()

virtual int64_t v8::platform::tracing::TracingController::CurrentCpuTimestampMicroseconds ( )

protectedvirtual

CurrentTimestampMicroseconds()

virtual int64_t v8::platform::tracing::TracingController::CurrentTimestampMicroseconds ( )

protectedvirtual

GetCategoryGroupEnabled()

const uint8_t * v8::platform::tracing::TracingController::GetCategoryGroupEnabled ( const char *  name )

overridevirtual

Called by TRACE_EVENT* macros, don't call this directly. The name parameter is a category group for example: TRACE_EVENT0("v8,parse", "V8.Parse") The pointer returned points to a value with zero or more of the bits defined in CategoryGroupEnabledFlags.

Reimplemented from v8::TracingController.

GetCategoryGroupName()

static const char * v8::platform::tracing::TracingController::GetCategoryGroupName ( const uint8_t *  category_enabled_flag )

static

Initialize()

void v8::platform::tracing::TracingController::Initialize

(

TraceBuffer *

trace_buffer

)

RemoveTraceStateObserver()

void v8::platform::tracing::TracingController::RemoveTraceStateObserver ( v8::TracingController::TraceStateObserver *  )

overridevirtual

Removes tracing state change observer. Does nothing in Perfetto SDK build (v8_use_perfetto = true).

Reimplemented from v8::TracingController.

StartTracing()

void v8::platform::tracing::TracingController::StartTracing

(

TraceConfig *

trace_config

)

StopTracing()

void v8::platform::tracing::TracingController::StopTracing

(

)

UpdateTraceEventDuration()

void v8::platform::tracing::TracingController::UpdateTraceEventDuration ( const uint8_t *  category_enabled_flag, const char *  name, uint64_t  handle  )

overridevirtual

Sets the duration field of a COMPLETE trace event. It must be called with the handle returned from AddTraceEvent().

Reimplemented from v8::TracingController.

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

• include/libplatform/v8-tracing.h