| /* Support for single-thread optimizations. |
| Copyright (C) 2020 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef _SYS_SINGLE_THREADED_H |
| #define _SYS_SINGLE_THREADED_H |
| |
| #include <features.h> |
| |
| __BEGIN_DECLS |
| |
| /* If this variable is non-zero, then the current thread is the only |
| thread in the process image. If it is zero, the process might be |
| multi-threaded. */ |
| extern char __libc_single_threaded; |
| |
| __END_DECLS |
| |
| #endif /* _SYS_SINGLE_THREADED_H */ |
