Home | History | Annotate | Download | only in ext 
      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/debug/trace_event.h"
      6 #include "skia/ext/event_tracer_impl.h"
      7 #include "third_party/skia/include/utils/SkEventTracer.h"
      8 
      9 namespace skia {
     10 
     11 class SkChromiumEventTracer: public SkEventTracer {
     12   virtual const uint8_t* getCategoryGroupEnabled(const char* name) OVERRIDE;
     13   virtual const char* getCategoryGroupName(
     14       const uint8_t* categoryEnabledFlag) OVERRIDE;
     15   virtual SkEventTracer::Handle
     16     addTraceEvent(char phase,
     17                   const uint8_t* categoryEnabledFlag,
     18                   const char* name,
     19                   uint64_t id,
     20                   int32_t numArgs,
     21                   const char** argNames,
     22                   const uint8_t* argTypes,
     23                   const uint64_t* argValues,
     24                   uint8_t flags) OVERRIDE;
     25   virtual void
     26     updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
     27                              const char *name,
     28                              SkEventTracer::Handle handle) OVERRIDE;
     29 };
     30 
     31 const uint8_t*
     32   SkChromiumEventTracer::getCategoryGroupEnabled(const char* name) {
     33     return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(name);
     34 }
     35 
     36 const char* SkChromiumEventTracer::getCategoryGroupName(
     37       const uint8_t* categoryEnabledFlag) {
     38   return base::debug::TraceLog::GetCategoryGroupName(
     39       categoryEnabledFlag);
     40 }
     41 
     42 SkEventTracer::Handle
     43     SkChromiumEventTracer::addTraceEvent(char phase,
     44                                          const uint8_t* categoryEnabledFlag,
     45                                          const char* name,
     46                                          uint64_t id,
     47                                          int32_t numArgs,
     48                                          const char** argNames,
     49                                          const uint8_t* argTypes,
     50                                          const uint64_t* argValues,
     51                                          uint8_t flags) {
     52       base::debug::TraceEventHandle handle = TRACE_EVENT_API_ADD_TRACE_EVENT(
     53           phase, categoryEnabledFlag, name, id, numArgs, argNames,
     54           argTypes, (const long long unsigned int*) argValues, NULL, flags);
     55       SkEventTracer::Handle result;
     56       memcpy(&result, &handle, sizeof(result));
     57       return result;
     58 }
     59 
     60 void
     61     SkChromiumEventTracer::updateTraceEventDuration(
     62         const uint8_t* categoryEnabledFlag,
     63         const char *name,
     64         SkEventTracer::Handle handle) {
     65       base::debug::TraceEventHandle traceEventHandle;
     66       memcpy(&traceEventHandle, &handle, sizeof(handle));
     67       TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
     68           categoryEnabledFlag, name, traceEventHandle);
     69 }
     70 
     71 }  // namespace skia
     72 
     73 
     74 void InitSkiaEventTracer() {
     75   // Initialize the binding to Skia's tracing events. Skia will
     76   // take ownership of and clean up the memory allocated here.
     77   SkEventTracer::SetInstance(new skia::SkChromiumEventTracer());
     78 }
     79