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/* Copyright (c) 2008-2022 the MRtrix3 contributors.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Covered Software is provided under this License on an "as is"
* basis, without warranty of any kind, either expressed, implied, or
* statutory, including, without limitation, warranties that the
* Covered Software is free of defects, merchantable, fit for a
* particular purpose or non-infringing.
* See the Mozilla Public License v. 2.0 for more details.
*
* For more details, see http://www.mrtrix.org/.
*/
#ifndef __memory_h__
#define __memory_h__
#include <memory>
#define NOMEMALIGN
/** \defgroup Memory Memory management
* \brief Classes & functions to ease memory management. */
namespace MR
{
template<class T, class Deleter = std::default_delete<T>>
class copy_ptr : public std::unique_ptr<T, Deleter>
{ NOMEMALIGN
public:
constexpr copy_ptr () noexcept : std::unique_ptr<T,Deleter>() { }
constexpr copy_ptr (std::nullptr_t) noexcept : std::unique_ptr<T,Deleter>() { }
explicit copy_ptr (T* p) noexcept : std::unique_ptr<T,Deleter> (p) { }
copy_ptr (const copy_ptr& u) : std::unique_ptr<T,Deleter>(u ? new T (*u) : nullptr) { }
copy_ptr (copy_ptr&& u) noexcept : std::unique_ptr<T,Deleter>(std::move(u)) { }
template< class U, class E >
copy_ptr (copy_ptr<U, E>&& u) noexcept : std::unique_ptr<T,Deleter>(std::move(u)) { }
copy_ptr& operator=(const copy_ptr& u) { this->reset (u ? new T (*u) : nullptr); return *this; }
};
struct compare_ptr_contents { NOMEMALIGN
template <class X>
bool operator() (const X& a, const X& b) const { return *a < *b; }
template <class X>
bool operator() (const std::shared_ptr<X>& a, const std::shared_ptr<X>& b) const { return *a < *b; }
};
}
#endif
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