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   RenderingStats GetRenderingStats();
  22
  23   // Read and write access to the record_rendering_stats_ flag is not locked to
  24   // improve performance. The flag is commonly turned off and hardly changes
  25   // it's value during runtime.
  26   bool record_rendering_stats() const { return record_rendering_stats_; }
  27   void set_record_rendering_stats(bool record_rendering_stats) {
  28     if (record_rendering_stats_ != record_rendering_stats)
  29       record_rendering_stats_ = record_rendering_stats;
  30   }
  31
  32   base::TimeTicks StartRecording() const;
  33   base::TimeDelta EndRecording(base::TimeTicks start_time) const;
  34
  35   // TODO(egraether): Remove after switching Layer::update() to use this class.
  36   // Used in LayerTreeHost::paintLayerContents().
  37   void AddStats(const RenderingStats& other);
  38
  39   void IncrementAnimationFrameCount();
  40   void SetScreenFrameCount(int64 count);
  41   void SetDroppedFrameCount(int64 count);
  42
  43   void AddCommit(base::TimeDelta duration);
  44   void AddPaint(base::TimeDelta duration, int64 pixels);
  45   void AddRaster(base::TimeDelta duration,
  46                  int64 pixels,
  47                  bool is_in_pending_tree_now_bin);
  48
  49   void IncrementImplThreadScrolls();
  50   void IncrementMainThreadScrolls();
  51
  52   void AddLayersDrawn(int64 amount);
  53   void AddMissingTiles(int64 amount);
  54
  55   void AddDeferredImageDecode(base::TimeDelta duration);
  56   void AddImageGathering(base::TimeDelta duration);
  57
  58   void IncrementDeferredImageCacheHitCount();
  59
  60  protected:
  61   RenderingStatsInstrumentation();
  62
  63  private:
  64   RenderingStats rendering_stats_;
  65   bool record_rendering_stats_;
  66
  67   base::Lock lock_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(RenderingStatsInstrumentation);
  70 };
  71
  72 }  // namespace cc
  73
  74 #endif  // CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_