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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkChromeTracingTracer_DEFINED
#define SkChromeTracingTracer_DEFINED
#include "SkEventTracer.h"
#include "SkJSONCPP.h"
#include "SkString.h"
/**
* A SkEventTracer implementation that logs events to JSON for viewing with chrome://tracing.
*/
class SkChromeTracingTracer : public SkEventTracer {
public:
SkChromeTracingTracer(const char* filename) : fRoot(Json::arrayValue), fFilename(filename) {}
~SkChromeTracingTracer() override { this->flush(); }
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 {
static const char* category = "category?";
return category;
}
private:
void flush();
Json::Value fRoot;
SkString fFilename;
};
#endif
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