1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc. 2 3 This file is part of GCC. 4 5 GCC is free software; you can redistribute it and/or modify it under 6 the terms of the GNU General Public License as published by the Free 7 Software Foundation; either version 3, or (at your option) any later 8 version. 9 10 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 11 WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 for more details. 14 15 Under Section 7 of GPL version 3, you are granted additional 16 permissions described in the GCC Runtime Library Exception, version 17 3.1, as published by the Free Software Foundation. 18 19 You should have received a copy of the GNU General Public License and 20 a copy of the GCC Runtime Library Exception along with this program; 21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 22 <http://www.gnu.org/licenses/>. */ 23 24 /* Threads compatibility routines for libgcc2 for VxWorks. 25 26 This file implements the GTHREAD_HAS_COND part of the interface 27 exposed by gthr-vxworks.h. */ 28 29 #include "gthr.h" 30 31 #if __GTHREAD_HAS_COND 32 33 #include <taskLib.h> 34 35 /* --------------------------- Condition Variables ------------------------ */ 36 37 void 38 __gthread_cond_init (__gthread_cond_t *cond) 39 { 40 if (!cond) 41 return; 42 *cond = semBCreate (SEM_Q_FIFO, SEM_EMPTY); 43 } 44 45 int 46 __gthread_cond_destroy (__gthread_cond_t *cond) 47 { 48 if (!cond) 49 return ERROR; 50 return __CHECK_RESULT (semDelete (*cond)); 51 } 52 53 int 54 __gthread_cond_broadcast (__gthread_cond_t *cond) 55 { 56 if (!cond) 57 return ERROR; 58 59 return __CHECK_RESULT (semFlush (*cond)); 60 } 61 62 int 63 __gthread_cond_wait (__gthread_cond_t *cond, 64 __gthread_mutex_t *mutex) 65 { 66 if (!cond) 67 return ERROR; 68 69 if (!mutex) 70 return ERROR; 71 72 int ret = __CHECK_RESULT (semExchange (*mutex, *cond, WAIT_FOREVER)); 73 74 __RETURN_ERRNO_IF_NOT_OK (semTake (*mutex, WAIT_FOREVER)); 75 76 return ret; 77 } 78 79 int 80 __gthread_cond_wait_recursive (__gthread_cond_t *cond, 81 __gthread_recursive_mutex_t *mutex) 82 { 83 return __gthread_cond_wait (cond, mutex); 84 } 85 86 #endif 87