pool_manager.hh

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/*
 * Copyright (c) 2015-2017 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.
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 * 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.
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 * software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef __POOL_MANAGER_HH__
#define __POOL_MANAGER_HH__
 
#include <cassert>
#include <cstdint>
#include <string>
 
#include "params/PoolManager.hh"
#include "sim/sim_object.hh"
 
// Pool Manager Logic
class PoolManager : public SimObject
{
  public:
    PoolManager(const PoolManagerParams *p);
    virtual ~PoolManager() { _poolSize = 0; }
    uint32_t minAllocation() { return _minAllocation; }
    virtual std::string printRegion() = 0;
    virtual uint32_t regionSize(std::pair<uint32_t,uint32_t> &region) = 0;
    virtual bool canAllocate(uint32_t numRegions, uint32_t size) = 0;
 
    virtual uint32_t allocateRegion(const uint32_t size,
                                    uint32_t *reserved) = 0;
 
    virtual void freeRegion(uint32_t firstIdx, uint32_t lastIdx) = 0;
    uint32_t poolSize() { return _poolSize; }
 
  private:
    // minimum size that can be reserved per allocation
    uint32_t _minAllocation;
    // pool size in number of elements
    uint32_t _poolSize;
};
 
#endif // __POOL_MANAGER_HH__