Program Listing for File MallocAllocator.hpp¶
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//////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2018, Lawrence Livermore National Security, LLC.
// Produced at the Lawrence Livermore National Laboratory
//
// Created by David Beckingsale, david@llnl.gov
// LLNL-CODE-747640
//
// All rights reserved.
//
// This file is part of Umpire.
//
// For details, see https://github.com/LLNL/Umpire
// Please also see the LICENSE file for MIT license.
//////////////////////////////////////////////////////////////////////////////
#ifndef UMPIRE_MallocAllocator_HPP
#define UMPIRE_MallocAllocator_HPP
#include <cstdlib>
#include "umpire/util/Macros.hpp"
namespace umpire {
namespace alloc {
/*!
* \brief Uses malloc and free to allocate and deallocate CPU memory.
*/
struct MallocAllocator
{
/*!
* \brief Allocate bytes of memory using malloc.
*
* \param bytes Number of bytes to allocate.
* \return Pointer to start of the allocation.
*
* \throws umpire::util::Exception if memory cannot be allocated.
*/
void* allocate(size_t bytes)
{
void* ret = ::malloc(bytes);
UMPIRE_LOG(Debug, "(bytes=" << bytes << ") returning " << ret);
if (ret == nullptr) {
UMPIRE_ERROR("malloc( bytes = " << bytes << " ) failed");
} else {
return ret;
}
}
/*!
* \brief Deallocate memory using free.
*
* \param ptr Address to deallocate.
*
* \throws umpire::util::Exception if memory cannot be free'd.
*/
void deallocate(void* ptr)
{
UMPIRE_LOG(Debug, "(ptr=" << ptr << ")");
::free(ptr);
}
};
} // end of namespace alloc
} // end of namespace umpire
#endif // UMPIRE_MallocAllocator_HPP