1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000 Jake Burkholder <jake@freebsd.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/condvar.h> 33 #include <sys/callout.h> 34 #include <time.h> 35 #include <los_event.h> 36 37 extern UINT32 OsEventWriteOnce(EVENT_CB_S *eventCb, UINT32 events); 38 39 int 40 cv_timedwait(struct cv *cv, struct mtx *mtx, int tw_ms) 41 { 42 struct timespec abstime; 43 44 abstime.tv_sec = tw_ms / MSEC_PER_SEC; 45 abstime.tv_nsec = (tw_ms%MSEC_PER_SEC) * NSEC_PER_MSEC; 46 return (pthread_cond_timedwait(cv, mtx, &abstime)); 47 } 48 49 int 50 cv_signal(pthread_cond_t *cond) 51 { 52 int ret; 53 54 if (cond == NULL) { 55 return (EINVAL); 56 } 57 ret = OsEventWriteOnce(&(cond->event), 0x01); 58 59 if (ret != 0) { 60 return (EINVAL); 61 } 62 63 return (ret); 64 } 65 66 int 67 cv_wait(pthread_cond_t *cond, pthread_mutex_t *mutex) 68 { 69 int ret; 70 71 if ((cond == NULL) || (mutex == NULL)) { 72 return (EINVAL); 73 } 74 75 (void)pthread_mutex_lock(cond->mutex); 76 if (cond->value == -1) { 77 cond->value = 0; 78 ret = LOS_EventInit(&(cond->event)); 79 if (ret != LOS_OK) { 80 (void)pthread_mutex_unlock(cond->mutex); 81 return (EINVAL); 82 } 83 } 84 (void)pthread_mutex_unlock(cond->mutex); 85 86 if (pthread_mutex_unlock(mutex) != ENOERR) { 87 PRINTK("%s %d\n",__FUNCTION__,__LINE__); 88 } 89 90 ret = LOS_EventRead(&(cond->event), 0x0f, LOS_WAITMODE_OR | LOS_WAITMODE_CLR, LOS_WAIT_FOREVER); 91 92 if (pthread_mutex_lock(mutex) != ENOERR) { 93 PRINTK("%s %d\n",__FUNCTION__,__LINE__); 94 } 95 96 return (ret); 97 } 98 99 int 100 cv_broadcast(pthread_cond_t *cond) 101 { 102 int ret; 103 104 if (cond == NULL) { 105 return (EINVAL); 106 } 107 108 ret = LOS_EventWrite(&(cond->event), 0x01); 109 if (ret != 0) { 110 return (EINVAL); 111 } 112 113 return (ret); 114 } 115