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BufferPool.h
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BufferPool.h
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/****************************************************************************
Copyright (c) 2020-2021 Xiamen Yaji Software Co., Ltd.
http://www.cocos.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated engine source code (the "Software"), a limited,
worldwide, royalty-free, non-assignable, revocable and non-exclusive license
to use Cocos Creator solely to develop games on your target platforms. You shall
not use Cocos Creator software for developing other software or tools that's
used for developing games. You are not granted to publish, distribute,
sublicense, and/or sell copies of Cocos Creator.
The software or tools in this License Agreement are licensed, not sold.
Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#pragma once
#include "BufferAllocator.h"
#include "PoolType.h"
#include "cocos/base/Macros.h"
#include "cocos/base/Object.h"
#include "cocos/base/TypeDef.h"
#include "cocos/base/memory/StlAlloc.h"
#include "cocos/bindings/jswrapper/Object.h"
namespace se {
class CC_DLL BufferPool final : public cc::Object {
public:
using Chunk = uint8_t *;
CC_INLINE static const cc::vector<BufferPool *> &getPoolMap() { return BufferPool::_poolMap; }
CC_INLINE static const uint getPoolFlag() { return _poolFlag; }
BufferPool(PoolType type, uint entryBits, uint bytesPerEntry);
~BufferPool();
template <class T>
T *getTypedObject(uint id) const {
uint chunk = (_chunkMask & id) >> _entryBits;
uint entry = _entryMask & id;
CCASSERT(chunk < _chunks.size() && entry < _entriesPerChunk, "BufferPool: Invalid buffer pool entry id");
return reinterpret_cast<T *>(_chunks[chunk] + (entry * _bytesPerEntry));
}
Object *allocateNewChunk();
private:
static cc::vector<BufferPool *> _poolMap;
static constexpr uint _poolFlag = 1 << 30;
BufferAllocator _allocator;
cc::vector<Chunk> _chunks;
uint _entryBits = 1 << 8;
uint _chunkMask = 0;
uint _entryMask = 0;
uint _bytesPerChunk = 0;
uint _entriesPerChunk = 0;
uint _bytesPerEntry = 0;
PoolType _type = PoolType::UNKNOWN;
};
} // namespace se