Mercurial > octave
view liboctave/util/oct-refcount.h @ 31635:7d3467f8d713 stable
Backed out changeset d9970470108a
author | John W. Eaton <jwe@octave.org> |
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date | Sat, 03 Dec 2022 14:43:33 -0500 |
parents | aac27ad79be6 |
children | 597f3ee61a48 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2012-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if ! defined (octave_oct_refcount_h) #define octave_oct_refcount_h 1 #include "octave-config.h" #include <atomic> OCTAVE_BEGIN_NAMESPACE(octave) // Encapsulates a reference counter. template <typename T> class refcount { public: typedef T count_type; refcount (count_type initial_count) : m_count (initial_count) { } refcount (const refcount&) = delete; refcount& operator = (const refcount&) = delete; ~refcount (void) = default; // Increment/Decrement. int is postfix. count_type operator++ (void) { return ++m_count; } count_type operator++ (int) { return m_count++; } count_type operator-- (void) { return --m_count; } count_type operator-- (int) { return m_count--; } count_type value (void) const { return m_count.load (); } operator count_type (void) const { return value (); } private: std::atomic<T> m_count; }; OCTAVE_END_NAMESPACE(octave) #endif