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1 | // Low-level type for atomic operations -*- C++ -*- |
2 | ||
aa118a03 | 3 | // Copyright (C) 2004-2014 Free Software Foundation, Inc. |
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4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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9 | // any later version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
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16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License and | |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
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24 | |
25 | #ifndef _GLIBCXX_ATOMIC_WORD_H | |
26 | #define _GLIBCXX_ATOMIC_WORD_H 1 | |
27 | ||
28 | typedef int _Atomic_word; | |
29 | ||
30 | #define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("isync":::"memory") | |
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31 | #ifdef __NO_LWSYNC__ |
32 | #define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory") | |
33 | #else | |
445cf5eb | 34 | #define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory") |
86098753 | 35 | #endif |
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36 | |
37 | #endif |