1 | /* Support for single-thread optimizations. |
2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #ifndef _SYS_SINGLE_THREADED_H |
20 | #define _SYS_SINGLE_THREADED_H |
21 | |
22 | #include <features.h> |
23 | |
24 | __BEGIN_DECLS |
25 | |
26 | /* If this variable is non-zero, then the current thread is the only |
27 | thread in the process image. If it is zero, the process might be |
28 | multi-threaded. */ |
29 | extern char __libc_single_threaded; |
30 | |
31 | __END_DECLS |
32 | |
33 | #endif /* _SYS_SINGLE_THREADED_H */ |
34 | |