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/*
* Copyright (c) 2020 Advanced Micro Devices, Inc.
* All rights reserved.
*
* 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
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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*/
#ifndef __DYN_POOL_MANAGER_HH__
#define __DYN_POOL_MANAGER_HH__
#include <cassert>
#include <cstdint>
#include "gpu-compute/pool_manager.hh"
#include "params/DynPoolManager.hh"
namespace gem5
{
// Dynamic Pool Manager: allows multiple WGs on the same pool
class DynPoolManager : public PoolManager
{
public:
DynPoolManager(const PoolManagerParams &p)
: PoolManager(p), _regionSize(0)
{
_totRegSpaceAvailable = p.pool_size;
}
uint32_t allocateRegion(const uint32_t size, uint32_t *reservedPoolSize) override;
bool canAllocate(uint32_t numRegions, uint32_t size) override;
void freeRegion(uint32_t firstIdx, uint32_t lastIdx) override;
uint32_t minAllocatedElements(uint32_t size);
std::string printRegion() override;
uint32_t regionSize(std::pair<uint32_t,uint32_t> &region) override;
void resetRegion(const int & regsPerSimd) override;
private:
// actual size of a region (normalized to the minimum size that can
// be reserved)
uint32_t _regionSize;
// total registers available - across chunks
uint32_t _totRegSpaceAvailable;
// regIndex and freeSpace record
std::list<std::pair<int,int>> freeSpaceRecord;
int reservedSpaceRecord;
// total registers to be allocated -- treat as a const
int totalRegSpace;
};
} // namespace gem5
#endif // __DYN_POOL_MANAGER_HH__