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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [config/] [cpu/] [powerpc/] [atomic_word.h] - Rev 516
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// Low-level type for atomic operations -*- C++ -*- // Copyright (C) 2004, 2009 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library 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, or (at your option) // any later version. // This library 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. #ifndef _GLIBCXX_ATOMIC_WORD_H #define _GLIBCXX_ATOMIC_WORD_H 1 typedef int _Atomic_word; #define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("isync":::"memory") #ifdef __NO_LWSYNC__ #define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory") #else #define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory") #endif #endif