1// -*- C++ -*- header. 
2 
3// Copyright (C) 2008-2021 Free Software Foundation, Inc. 
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 
8// Free Software Foundation; either version 3, or (at your option) 
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 
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/>. 
24 
25/** @file bits/atomic_lockfree_defines.h 
26 * This is an internal header file, included by other library headers. 
27 * Do not attempt to use it directly. @headername{atomic} 
28 */ 
29 
30#ifndef _GLIBCXX_ATOMIC_LOCK_FREE_H 
31#define _GLIBCXX_ATOMIC_LOCK_FREE_H 1 
32 
33#pragma GCC system_header 
34 
35/** 
36 * @addtogroup atomics 
37 * @{ 
38 */ 
39 
40/** 
41 * Lock-free property. 
42 * 
43 * 0 indicates that the types are never lock-free. 
44 * 1 indicates that the types are sometimes lock-free. 
45 * 2 indicates that the types are always lock-free. 
46 */ 
47 
48#if __cplusplus >= 201103L 
49#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE 
50#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE 
51#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE 
52#ifdef _GLIBCXX_USE_CHAR8_T 
53#define ATOMIC_CHAR8_T_LOCK_FREE __GCC_ATOMIC_CHAR8_T_LOCK_FREE 
54#endif 
55#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE 
56#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE 
57#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE 
58#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE 
59#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE 
60#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE 
61#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE 
62#endif 
63 
64/// @} group atomics 
65 
66#endif 
67