1// Low-level functions for atomic operations: Alpha version -*- C++ -*- 2 3// Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005 4// Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 2, or (at your option) 10// any later version. 11 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING. If not, write to the Free 19// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 20// USA. 21 22// As a special exception, you may use this file as part of a free software 23// library without restriction. Specifically, if other files instantiate 24// templates or use macros or inline functions from this file, or you compile 25// this file and link it with other files to produce an executable, this 26// file does not by itself cause the resulting executable to be covered by 27// the GNU General Public License. This exception does not however 28// invalidate any other reasons why the executable file might be covered by 29// the GNU General Public License. 30 31#include <bits/atomicity.h> 32 33namespace __gnu_cxx 34{ 35 _Atomic_word 36 __attribute__ ((__unused__)) 37 __exchange_and_add(volatile _Atomic_word* __mem, int __val) 38 { return __sync_fetch_and_add(__mem, __val); } 39 40 void 41 __attribute__ ((__unused__)) 42 __atomic_add(volatile _Atomic_word* __mem, int __val) 43 { __sync_fetch_and_add(__mem, __val); } 44} // namespace __gnu_cxx 45 46