| /* Copyright (C) 2002-2019 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _SEMAPHORE_H |
| # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." |
| #endif |
| |
| |
| #ifdef __ILP32__ |
| # define __SIZEOF_SEM_T 16 |
| #else |
| # define __SIZEOF_SEM_T 32 |
| #endif |
| |
| |
| /* Value returned if `sem_open' failed. */ |
| #define SEM_FAILED ((sem_t *) 0) |
| |
| |
| typedef union |
| { |
| char __size[__SIZEOF_SEM_T]; |
| long long int __align; |
| } sem_t; |
