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      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   void IncrementAnimationFrameCount();
     36   void SetScreenFrameCount(int64 count);
     37   void SetDroppedFrameCount(int64 count);
     38 
     39   void AddCommit(base::TimeDelta duration);
     40   void AddPaint(base::TimeDelta duration, int64 pixels);
     41   void AddRecord(base::TimeDelta duration, int64 pixels);
     42   void AddRaster(base::TimeDelta total_duraction,
     43                  base::TimeDelta best_duration,
     44                  int64 pixels,
     45                  bool is_in_pending_tree_now_bin);
     46 
     47   void IncrementImplThreadScrolls();
     48   void IncrementMainThreadScrolls();
     49 
     50   void AddLayersDrawn(int64 amount);
     51   void AddMissingTiles(int64 amount);
     52 
     53   void AddDeferredImageDecode(base::TimeDelta duration);
     54   void AddImageGathering(base::TimeDelta duration);
     55 
     56   void IncrementDeferredImageCacheHitCount();
     57 
     58   void AddAnalysisResult(base::TimeDelta duration, bool is_solid_color);
     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_
     75