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/*
* Copyright (c) 2015 Advanced Micro Devices, Inc.
* All rights reserved.
*
* For use for simulation and test purposes only
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Authors: John Kalamatianos
*/
#ifndef __SIMPLE_POOL_MANAGER_HH__
#define __SIMPLE_POOL_MANAGER_HH__
#include <cassert>
#include <cstdint>
#include "gpu-compute/pool_manager.hh"
// Simple Pool Manager: allows one region per pool. No region merging is
// supported.
class SimplePoolManager : public PoolManager
{
public:
SimplePoolManager(uint32_t minAlloc, uint32_t poolSize)
: PoolManager(minAlloc, poolSize), _regionSize(0), _nxtFreeIdx(0),
_reservedGroups(0)
{
}
uint32_t minAllocatedElements(uint32_t size);
std::string printRegion();
bool canAllocate(uint32_t numRegions, uint32_t size);
uint32_t allocateRegion(const uint32_t size, uint32_t *reservedPoolSize);
void freeRegion(uint32_t firstIdx, uint32_t lastIdx);
uint32_t regionSize(std::pair<uint32_t,uint32_t> ®ion);
private:
// actual size of a region (normalized to the minimum size that can
// be reserved)
uint32_t _regionSize;
// next index to allocate a region
uint8_t _nxtFreeIdx;
// number of groups that reserve a region
uint32_t _reservedGroups;
};
#endif // __SIMPLE_POOL_MANAGER_HH__
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