chromium/skia/ext/event_tracer_impl.cc

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <stdint.h>

#include "base/feature_list.h"
#include "base/trace_event/trace_event.h"
#include "skia/ext/event_tracer_impl.h"
#include "third_party/skia/include/utils/SkEventTracer.h"

namespace {
// Experiment with not deleting the Skia event tracer at process exit
// to measure the improvement in performance. See crbug.com/1329594
BASE_FEATURE(…);
}  // namespace

namespace skia {

class SkChromiumEventTracer: public SkEventTracer { … };

const uint8_t*
  SkChromiumEventTracer::getCategoryGroupEnabled(const char* name) { … }

const char* SkChromiumEventTracer::getCategoryGroupName(
      const uint8_t* categoryEnabledFlag) { … }

SkEventTracer::Handle
    SkChromiumEventTracer::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) { … }

void
    SkChromiumEventTracer::updateTraceEventDuration(
        const uint8_t* categoryEnabledFlag,
        const char *name,
        SkEventTracer::Handle handle) { … }

}  // namespace skia

void InitSkiaEventTracer() { … }