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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // 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
- const base::Feature kLeakSkiaEventTracerAtExit{
- "LeakSkiaEventTracerAtExit", base::FEATURE_DISABLED_BY_DEFAULT};
- } // namespace
- namespace skia {
- class SkChromiumEventTracer: public SkEventTracer {
- const uint8_t* getCategoryGroupEnabled(const char* name) override;
- const char* getCategoryGroupName(const uint8_t* categoryEnabledFlag) override;
- 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) override;
- void updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
- const char* name,
- SkEventTracer::Handle handle) override;
- };
- const uint8_t*
- SkChromiumEventTracer::getCategoryGroupEnabled(const char* name) {
- return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(name);
- }
- const char* SkChromiumEventTracer::getCategoryGroupName(
- const uint8_t* categoryEnabledFlag) {
- return base::trace_event::TraceLog::GetCategoryGroupName(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) {
- base::trace_event::TraceArguments args(
- numArgs, argNames, argTypes,
- reinterpret_cast<const unsigned long long*>(argValues));
- base::trace_event::TraceEventHandle handle = TRACE_EVENT_API_ADD_TRACE_EVENT(
- phase, categoryEnabledFlag, name, trace_event_internal::kGlobalScope, id,
- &args, flags);
- SkEventTracer::Handle result;
- memcpy(&result, &handle, sizeof(result));
- return result;
- }
- void
- SkChromiumEventTracer::updateTraceEventDuration(
- const uint8_t* categoryEnabledFlag,
- const char *name,
- SkEventTracer::Handle handle) {
- base::trace_event::TraceEventHandle traceEventHandle;
- memcpy(&traceEventHandle, &handle, sizeof(handle));
- TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
- categoryEnabledFlag, name, traceEventHandle);
- }
- } // namespace skia
- void InitSkiaEventTracer() {
- // Initialize the binding to Skia's tracing events. Skia will
- // take ownership of and clean up the memory allocated here.
- SkEventTracer::SetInstance(
- new skia::SkChromiumEventTracer(),
- base::FeatureList::IsEnabled(kLeakSkiaEventTracerAtExit));
- }
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