SkPerfettoTrace Class Reference

#include <SkPerfettoTrace.h>

Inheritance diagram for SkPerfettoTrace:

Public Member Functions
	SkPerfettoTrace ()
	~SkPerfettoTrace () override
SkEventTracer::Handle	addTraceEvent (char phase, const uint8_t *categoryEnabledFlag, const char *name, uint64_t id, int numArgs, const char **argNames, const uint8_t *argTypes, const uint64_t *argValues, uint8_t flags) override
void	updateTraceEventDuration (const uint8_t *categoryEnabledFlag, const char *name, SkEventTracer::Handle handle) override
const uint8_t *	getCategoryGroupEnabled (const char *name) override
const char *	getCategoryGroupName (const uint8_t *categoryEnabledFlag) override
void	newTracingSection (const char *name) override
Public Member Functions inherited from SkEventTracer
virtual	~SkEventTracer ()=default
virtual SkEventTracer::Handle	addTraceEvent (char phase, const uint8_t *categoryEnabledFlag, const char *name, uint64_t id, int32_t numArgs, const char **argNames, const uint8_t *argTypes, const uint64_t *argValues, uint8_t flags)=0

Additional Inherited Members
Public Types inherited from SkEventTracer
enum	CategoryGroupEnabledFlags { kEnabledForRecording_CategoryGroupEnabledFlags = 1 << 0 , kEnabledForMonitoring_CategoryGroupEnabledFlags = 1 << 1 , kEnabledForEventCallback_CategoryGroupEnabledFlags = 1 << 2 }
typedef uint64_t	Handle
Static Public Member Functions inherited from SkEventTracer
static bool	SetInstance (SkEventTracer *, bool leakTracer=false)
static SkEventTracer *	GetInstance ()
Protected Member Functions inherited from SkEventTracer
	SkEventTracer ()=default
	SkEventTracer (const SkEventTracer &)=delete
SkEventTracer &	operator= (const SkEventTracer &)=delete

Detailed Description

This class is used to support Perfetto tracing. It hooks into the SkEventTracer system.

Definition at line 20 of file SkPerfettoTrace.h.

Constructor & Destructor Documentation

SkPerfettoTrace()

SkPerfettoTrace::SkPerfettoTrace

(

)

Definition at line 37 of file SkPerfettoTrace.cpp.

                                 {
    fOutputPath = FLAGS_perfettoOutputDir[0];
    fOutputFileExtension = FLAGS_perfettoOutputFileExtension[0];
    this->openNewTracingSession(FLAGS_perfettoOutputFileName[0]);
}

~SkPerfettoTrace()

SkPerfettoTrace::~SkPerfettoTrace ( )

override

Definition at line 43 of file SkPerfettoTrace.cpp.

                                  {
    this->closeTracingSession();
}

Member Function Documentation

addTraceEvent()

SkEventTracer::Handle SkPerfettoTrace::addTraceEvent ( char  phase, const uint8_t *  categoryEnabledFlag, const char *  name, uint64_t  id, int  numArgs, const char **  argNames, const uint8_t *  argTypes, const uint64_t *  argValues, uint8_t  flags  )

override

Definition at line 114 of file SkPerfettoTrace.cpp.

                                                                    {
    perfetto::DynamicCategory category{ this->getCategoryGroupName(categoryEnabledFlag) };
    if (TRACE_EVENT_PHASE_COMPLETE == phase ||
        TRACE_EVENT_PHASE_INSTANT == phase) {
        switch (numArgs) {
            case 0: {
                this->triggerTraceEvent(categoryEnabledFlag, name);
                break;
            }
            case 1: {
                this->triggerTraceEvent(categoryEnabledFlag, name, argNames[0], argTypes[0],
                                        argValues[0]);
                break;
            }
            case 2: {
                this->triggerTraceEvent(categoryEnabledFlag, name, argNames[0], argTypes[0],
                                        argValues[0], argNames[1], argTypes[1], argValues[1]);
                break;
            }
        }
    } else if (TRACE_EVENT_PHASE_END == phase) {
        TRACE_EVENT_END(category);
    }
 
    if (TRACE_EVENT_PHASE_INSTANT == phase) {
        TRACE_EVENT_END(category);
    }
    return 0;
}

getCategoryGroupEnabled()

const uint8_t * SkPerfettoTrace::getCategoryGroupEnabled ( const char *  name )

overridevirtual

Implements SkEventTracer.

Definition at line 160 of file SkPerfettoTrace.cpp.

                                                                        {
    return fCategories.getCategoryGroupEnabled(name);
}

getCategoryGroupName()

const char * SkPerfettoTrace::getCategoryGroupName ( const uint8_t *  categoryEnabledFlag )

overridevirtual

Implements SkEventTracer.

Definition at line 164 of file SkPerfettoTrace.cpp.

                                                                                    {
    return fCategories.getCategoryGroupName(categoryEnabledFlag);
}

newTracingSection()

void SkPerfettoTrace::newTracingSection ( const char *  name )

overridevirtual

Reimplemented from SkEventTracer.

Definition at line 336 of file SkPerfettoTrace.cpp.

                                                        {
    if (perfetto::Tracing::IsInitialized()) {
        this->closeTracingSession();
    }
    this->openNewTracingSession(name);
}

updateTraceEventDuration()

void SkPerfettoTrace::updateTraceEventDuration ( const uint8_t *  categoryEnabledFlag, const char *  name, SkEventTracer::Handle  handle  )

overridevirtual

Implements SkEventTracer.

Definition at line 152 of file SkPerfettoTrace.cpp.

                                                                           {
    // This is only ever called from a scoped trace event, so we will just end the event.
    perfetto::DynamicCategory category{ this->getCategoryGroupName(categoryEnabledFlag) };
    TRACE_EVENT_END(category);
}

---

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

• third_party/skia/tools/trace/SkPerfettoTrace.h
• third_party/skia/tools/trace/SkPerfettoTrace.cpp