Program Listing for File SizeLimiter.hpp¶
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//////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2016-20, Lawrence Livermore National Security, LLC and Umpire
// project contributors. See the COPYRIGHT file for details.
//
// SPDX-License-Identifier: (MIT)
//////////////////////////////////////////////////////////////////////////////
#ifndef UMPIRE_SizeLimiter_HPP
#define UMPIRE_SizeLimiter_HPP
#include <memory>
#include "umpire/strategy/AllocationStrategy.hpp"
#include "umpire/Allocator.hpp"
namespace umpire {
namespace strategy {
/*!
*
* \brief An allocator with a limited total size.
*
* Using this AllocationStrategy with another can be a good way to limit the
* total size of allocations made on a particular resource or from a particular
* context.
*/
class SizeLimiter :
public AllocationStrategy
{
public:
SizeLimiter(
const std::string& name,
int id,
Allocator allocator,
std::size_t size_limit);
void* allocate(std::size_t bytes);
void deallocate(void* ptr);
std::size_t getCurrentSize() const noexcept;
std::size_t getHighWatermark() const noexcept;
Platform getPlatform() noexcept;
private:
strategy::AllocationStrategy* m_allocator;
std::size_t m_size_limit;
std::size_t m_total_size;
};
} // end of namespace strategy
} // end namespace umpire
#endif // UMPIRE_SizeLimiter_HPP