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