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// 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_RESOURCES_MEMORY_HISTORY_H_
#define CC_RESOURCES_MEMORY_HISTORY_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include "base/containers/ring_buffer.h"
namespace cc {
// Maintains a history of memory for each frame.
class MemoryHistory {
public:
static std::unique_ptr<MemoryHistory> Create();
MemoryHistory(const MemoryHistory&) = delete;
MemoryHistory& operator=(const MemoryHistory&) = delete;
size_t HistorySize() const { return ring_buffer_.BufferSize(); }
struct Entry {
Entry()
: total_budget_in_bytes(0),
total_bytes_used(0),
had_enough_memory(false) {}
size_t total_budget_in_bytes;
int64_t total_bytes_used;
bool had_enough_memory;
};
void SaveEntry(const Entry& entry);
typedef base::RingBuffer<Entry, 80> RingBufferType;
RingBufferType::Iterator Begin() const { return ring_buffer_.Begin(); }
RingBufferType::Iterator End() const { return ring_buffer_.End(); }
private:
MemoryHistory();
RingBufferType ring_buffer_;
};
} // namespace cc
#endif // CC_RESOURCES_MEMORY_HISTORY_H_