cc/debug/invalidation_benchmark.h

   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 #ifndef CC_DEBUG_INVALIDATION_BENCHMARK_H_
   6 #define CC_DEBUG_INVALIDATION_BENCHMARK_H_
   7
   8 #include <string>
   9
  10 #include "cc/debug/micro_benchmark_controller.h"
  11
  12 namespace cc {
  13
  14 class LayerTreeHost;
  15 class Layer;
  16 // NOTE: this benchmark will not measure or return any results, it will simply
  17 // invalidate a certain area of each layer every frame. It is intended to be
  18 // used in combination with a telemetry benchmark that does the actual
  19 // measurement.
  20 class CC_EXPORT InvalidationBenchmark : public MicroBenchmark {
  21  public:
  22   explicit InvalidationBenchmark(scoped_ptr<base::Value> value,
  23                                  const MicroBenchmark::DoneCallback& callback);
  24   ~InvalidationBenchmark() override;
  25
  26   // Implements MicroBenchmark interface.
  27   void DidUpdateLayers(LayerTreeHost* host) override;
  28   void RunOnLayer(PictureLayer* layer) override;
  29   bool ProcessMessage(scoped_ptr<base::Value> value) override;
  30
  31  private:
  32   enum Mode { FIXED_SIZE, LAYER, VIEWPORT, RANDOM };
  33
  34   void Run(Layer* layer);
  35   float LCGRandom();
  36
  37   Mode mode_;
  38   int width_;
  39   int height_;
  40   uint32 seed_;
  41 };
  42
  43 }  // namespace cc
  44
  45 #endif  // CC_DEBUG_INVALIDATION_BENCHMARK_H_