1 /* Copyright (C) 2002-2021 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library. If not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #ifndef _SEMAPHORE_H 19 # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." 20 #endif 21 22 #if _MIPS_SIM == _ABI64 23 # define __SIZEOF_SEM_T 32 24 #else 25 # define __SIZEOF_SEM_T 16 26 #endif 27 28 /* Value returned if `sem_open' failed. */ 29 #define SEM_FAILED ((sem_t *) 0) 30 31 32 typedef union 33 { 34 char __size[__SIZEOF_SEM_T]; 35 long int __align; 36 } sem_t; 37