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Diffstat (limited to 'src/gpu-compute/simple_pool_manager.hh')
| -rw-r--r-- | src/gpu-compute/simple_pool_manager.hh | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/gpu-compute/simple_pool_manager.hh b/src/gpu-compute/simple_pool_manager.hh new file mode 100644 index 000000000..1d4174da8 --- /dev/null +++ b/src/gpu-compute/simple_pool_manager.hh @@ -0,0 +1,72 @@ +/* + * 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. + * + * Author: 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__ |