memorypool.h (ulmblas/impl/auxiliary/memorypool.h)

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/*

 * Copyright (C) 2014, The University of Texas at Austin

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *  - Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  - 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.

 *  - Neither the name of The University of Texas at Austin 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.

 *

 */

/*

 * Copyright (C) 2014-2015, Michael Lehn

 *

 * ulmBLAS adopted general ideas from BLIS.  Using micro kernels from BLIS

 * only requires minor modifications,

 *

 */

#ifndef ULMBLAS_IMPL_AUXILIARY_MEMORYPOOL_H

#define ULMBLAS_IMPL_AUXILIARY_MEMORYPOOL_H 1

#include <list>

#include <unordered_map>

#include <mutex>

namespace ulmBLAS {

template <typename T>

class MemoryPool

{

    public:

        T *

        allocate(size_t n);

        void

        release(T *block);

        virtual

        ~MemoryPool();

    private:

        typedef std::list<T *>                           BlockList;

        typedef std::unordered_map<size_t, BlockList>    Free;

        typedef std::unordered_map<T *, size_t>          Used;

        Free        free_;

        Used        used_;

        BlockList   allocated_;

        std::mutex  mutex_;

};

} // namespace ulmBLAS

#endif // ULMBLAS_IMPL_AUXILIARY_MEMORYPOOL_H

#include <ulmblas/impl/auxiliary/memorypool.tcc>