content/common/gpu/devtools_gpu_instrumentation.h

   1 // Copyright 2013 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 #ifndef CONTENT_COMMON_GPU_DEVTOOLS_GPU_INSTRUMENTATION_H_
   6 #define CONTENT_COMMON_GPU_DEVTOOLS_GPU_INSTRUMENTATION_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/threading/non_thread_safe.h"
  12
  13 namespace content {
  14
  15 class DevToolsGpuAgent;
  16 class GpuChannel;
  17
  18 class GpuEventsDispatcher : public base::NonThreadSafe {
  19  public:
  20   enum EventPhase {
  21     kEventStart,
  22     kEventFinish
  23   };
  24
  25   GpuEventsDispatcher();
  26   ~GpuEventsDispatcher();
  27
  28   void AddProcessor(DevToolsGpuAgent* processor);
  29   void RemoveProcessor(DevToolsGpuAgent* processor);
  30
  31   static void FireEvent(EventPhase phase, GpuChannel* channel) {
  32     if (!IsEnabled())
  33       return;
  34     DoFireEvent(phase, channel);
  35   }
  36
  37 private:
  38   static bool IsEnabled() { return enabled_; }
  39   static void DoFireEvent(EventPhase, GpuChannel* channel);
  40
  41   static bool enabled_;
  42   std::vector<DevToolsGpuAgent*> processors_;
  43 };
  44
  45 namespace devtools_gpu_instrumentation {
  46
  47 class ScopedGpuTask {
  48  public:
  49   explicit ScopedGpuTask(GpuChannel* channel) :
  50       channel_(channel) {
  51     GpuEventsDispatcher::FireEvent(GpuEventsDispatcher::kEventStart, channel_);
  52   }
  53   ~ScopedGpuTask() {
  54     GpuEventsDispatcher::FireEvent(GpuEventsDispatcher::kEventFinish, channel_);
  55   }
  56  private:
  57   GpuChannel* channel_;
  58   DISALLOW_COPY_AND_ASSIGN(ScopedGpuTask);
  59 };
  60
  61 } // namespace devtools_gpu_instrumentation
  62
  63 } // namespace content
  64
  65 #endif  // CONTENT_COMMON_GPU_DEVTOOLS_GPU_INSTRUMENTATION_H_