| OLD | NEW |
| (Empty) |
| 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_PAINT_TIME_COUNTER_H_ | |
| 6 #define CC_DEBUG_PAINT_TIME_COUNTER_H_ | |
| 7 | |
| 8 #include "base/basictypes.h" | |
| 9 #include "base/memory/scoped_ptr.h" | |
| 10 #include "base/time/time.h" | |
| 11 #include "cc/debug/ring_buffer.h" | |
| 12 | |
| 13 namespace cc { | |
| 14 | |
| 15 // Maintains a history of paint times for each frame | |
| 16 class PaintTimeCounter { | |
| 17 public: | |
| 18 static scoped_ptr<PaintTimeCounter> Create(); | |
| 19 | |
| 20 size_t HistorySize() const { return ring_buffer_.BufferSize(); } | |
| 21 | |
| 22 // n = 0 returns the oldest and | |
| 23 // n = PaintTimeHistorySize() - 1 the most recent paint time. | |
| 24 base::TimeDelta GetPaintTimeOfRecentFrame(const size_t& n) const; | |
| 25 | |
| 26 void SavePaintTime(const base::TimeDelta& total_paint_time); | |
| 27 void GetMinAndMaxPaintTime(base::TimeDelta* min, base::TimeDelta* max) const; | |
| 28 | |
| 29 void ClearHistory(); | |
| 30 | |
| 31 typedef RingBuffer<base::TimeDelta, 200> RingBufferType; | |
| 32 RingBufferType::Iterator Begin() const { return ring_buffer_.Begin(); } | |
| 33 RingBufferType::Iterator End() const { return ring_buffer_.End(); } | |
| 34 | |
| 35 private: | |
| 36 PaintTimeCounter(); | |
| 37 | |
| 38 RingBufferType ring_buffer_; | |
| 39 | |
| 40 DISALLOW_COPY_AND_ASSIGN(PaintTimeCounter); | |
| 41 }; | |
| 42 | |
| 43 } // namespace cc | |
| 44 | |
| 45 #endif // CC_DEBUG_PAINT_TIME_COUNTER_H_ | |
| OLD | NEW |