// Copyright 2013 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef CC_MEMORY_HISTORY_H_ #define CC_MEMORY_HISTORY_H_ #include "base/basictypes.h" #include "base/memory/scoped_ptr.h" #include "base/time.h" #include "cc/ring_buffer.h" namespace cc { // Maintains a history of memory for each frame class MemoryHistory { public: static scoped_ptr<MemoryHistory> create(); size_t HistorySize() const { return ring_buffer_.BufferSize(); } struct Entry { Entry() : bytes_allocated(0), bytes_over(0) { } size_t bytes_allocated; size_t bytes_unreleasable; size_t bytes_over; size_t bytes_total() const { return bytes_allocated + bytes_unreleasable + bytes_over; } }; // n = 0 returns the oldest and // n = HistorySize() - 1 the most recent paint time. Entry GetEntry(const size_t& n) const; void SaveEntry(const Entry& entry); void GetMinAndMax(size_t* min, size_t* max) const; private: MemoryHistory(); RingBuffer<Entry, 80> ring_buffer_; DISALLOW_COPY_AND_ASSIGN(MemoryHistory); }; } // namespace cc #endif // CC_MEMORY_HISTORY_H_