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
12namespace cc {
13
14class LayerTreeHost;
15class 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.
20class CC_EXPORT InvalidationBenchmark : public MicroBenchmark {
21 public:
22  explicit InvalidationBenchmark(scoped_ptr<base::Value> value,
23                                 const MicroBenchmark::DoneCallback& callback);
24  virtual ~InvalidationBenchmark();
25
26  // Implements MicroBenchmark interface.
27  virtual void DidUpdateLayers(LayerTreeHost* host) OVERRIDE;
28  virtual void RunOnLayer(PictureLayer* layer) OVERRIDE;
29  virtual 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_
46