ardour/libs/pbd/pbd/atomic.h

35 lines
1.1 KiB
C++

/*
* Copyright (C) 2023 Paul Davis <paul@linuxaudiosystems.com>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __libpbd_atomic_h__
#define __libpbd_atomic_h__
#include <atomic>
namespace PBD {
template<typename T>
bool atomic_dec_and_test (std::atomic<T>& aval) { return (aval.fetch_sub (1) - 1) == 0; }
template<typename T>
void atomic_inc (std::atomic<T>& aval) { (void) aval.fetch_add (1); }
}
#endif /* __libpbd_atomic_h__ */