91d83cc8a1
The create() method on Params structs usually instantiate SimObjects using a constructor which takes the Params struct as a parameter somehow. There has been a lot of needless variation in how that was done, making it annoying to pass Params down to base classes. Some of the different forms were: const Params & Params & Params * const Params * Params const* This change goes through and fixes up every constructor and every create() method to use the const Params & form. We use a reference because the Params struct should never be null. We use const because neither the create method nor the consuming object should modify the record of the parameters as they came in from the config. That would make consuming them not idempotent, and make it impossible to tell what the actual simulation configuration was since it would change from any user visible form (config script, config.ini, dot pdf output). Change-Id: I77453cba52fdcfd5f4eec92dfb0bddb5a9945f31 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35938 Reviewed-by: Gabe Black <gabeblack@google.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com>
72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
/*
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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
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* contributors may be used to endorse or promote products derived from this
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* software 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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#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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#include "params/SimplePoolManager.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(const PoolManagerParams &p)
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: PoolManager(p), _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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int _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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