cc/debug/rendering_stats_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 CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_
   6 #define CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/synchronization/lock.h"
  10 #include "cc/debug/rendering_stats.h"
  11
  12 namespace cc {
  13
  14 // RenderingStatsInstrumentation is shared among threads and manages conditional
  15 // recording of rendering stats into a private RenderingStats instance.
  16 class CC_EXPORT RenderingStatsInstrumentation {
  17  public:
  18   static scoped_ptr<RenderingStatsInstrumentation> Create();
  19   virtual ~RenderingStatsInstrumentation();
  20
  21   // Return copy of current main thread rendering stats.
  22   MainThreadRenderingStats main_thread_rendering_stats();
  23
  24   // Return copy of current impl thread rendering stats.
  25   ImplThreadRenderingStats impl_thread_rendering_stats();
  26
  27   // Return the accumulated, combined rendering stats.
  28   RenderingStats GetRenderingStats();
  29
  30   // Add current main thread rendering stats to accumulator and
  31   // clear current stats.
  32   void AccumulateAndClearMainThreadStats();
  33
  34   // Add current impl thread rendering stats to accumulator and
  35   // clear current stats.
  36   void AccumulateAndClearImplThreadStats();
  37
  38   // Read and write access to the record_rendering_stats_ flag is not locked to
  39   // improve performance. The flag is commonly turned off and hardly changes
  40   // it's value during runtime.
  41   bool record_rendering_stats() const { return record_rendering_stats_; }
  42   void set_record_rendering_stats(bool record_rendering_stats) {
  43     if (record_rendering_stats_ != record_rendering_stats)
  44       record_rendering_stats_ = record_rendering_stats;
  45   }
  46
  47   base::TimeTicks StartRecording() const;
  48   base::TimeDelta EndRecording(base::TimeTicks start_time) const;
  49
  50   void IncrementFrameCount(int64 count, bool main_thread);
  51   void AddPaint(base::TimeDelta duration, int64 pixels);
  52   void AddRecord(base::TimeDelta duration, int64 pixels);
  53   void AddRaster(base::TimeDelta duration, int64 pixels);
  54   void AddAnalysis(base::TimeDelta duration, int64 pixels);
  55   void AddVisibleContentArea(int64 area);
  56   void AddApproximatedVisibleContentArea(int64 area);
  57
  58  protected:
  59   RenderingStatsInstrumentation();
  60
  61  private:
  62   MainThreadRenderingStats main_thread_rendering_stats_;
  63   MainThreadRenderingStats main_thread_rendering_stats_accu_;
  64   ImplThreadRenderingStats impl_thread_rendering_stats_;
  65   ImplThreadRenderingStats impl_thread_rendering_stats_accu_;
  66
  67   bool record_rendering_stats_;
  68
  69   base::Lock lock_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(RenderingStatsInstrumentation);
  72 };
  73
  74 }  // namespace cc
  75
  76 #endif  // CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_