1/* 2 * Copyright (c) 2015 Advanced Micro Devices, Inc. 3 * All rights reserved. 4 * 5 * For use for simulation and test purposes only 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the copyright holder nor the names of its 18 * contributors may be used to endorse or promote products derived from this 19 * software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * Authors: John Kalamatianos 34 */ 35 36#ifndef __SIMPLE_POOL_MANAGER_HH__ 37#define __SIMPLE_POOL_MANAGER_HH__ 38 39#include <cassert> 40#include <cstdint> 41 42#include "gpu-compute/pool_manager.hh" 43 44// Simple Pool Manager: allows one region per pool. No region merging is 45// supported. 46class SimplePoolManager : public PoolManager 47{ 48 public: 49 SimplePoolManager(uint32_t minAlloc, uint32_t poolSize) 50 : PoolManager(minAlloc, poolSize), _regionSize(0), _nxtFreeIdx(0), 51 _reservedGroups(0) 52 { 53 } 54 55 uint32_t minAllocatedElements(uint32_t size); 56 std::string printRegion(); 57 bool canAllocate(uint32_t numRegions, uint32_t size); 58 uint32_t allocateRegion(const uint32_t size, uint32_t *reservedPoolSize); 59 void freeRegion(uint32_t firstIdx, uint32_t lastIdx); 60 uint32_t regionSize(std::pair<uint32_t,uint32_t> ®ion); 61 62 private: 63 // actual size of a region (normalized to the minimum size that can 64 // be reserved) 65 uint32_t _regionSize; 66 // next index to allocate a region 67 uint8_t _nxtFreeIdx; 68 // number of groups that reserve a region 69 uint32_t _reservedGroups; 70}; 71 72#endif // __SIMPLE_POOL_MANAGER_HH__ 73