comparison: ui/common/condvar.c
ui/common/condvar.c
- changeset 56
- 294d5515583a
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| 55:1ce14068ef31 | 56:294d5515583a |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2024 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include "condvar.h" | |
| 30 | |
| 31 | |
| 32 | |
| 33 UiCondVar* ui_condvar_create(void) { | |
| 34 UiPosixCondVar *var = malloc(sizeof(UiPosixCondVar)); | |
| 35 var->var.data = NULL; | |
| 36 var->var.intdata = 0; | |
| 37 var->set = 0; | |
| 38 pthread_mutex_init(&var->lock, NULL); | |
| 39 pthread_cond_init(&var->cond, NULL); | |
| 40 return (UiCondVar*)var; | |
| 41 } | |
| 42 | |
| 43 void ui_condvar_wait(UiCondVar *var) { | |
| 44 UiPosixCondVar *p = (UiPosixCondVar*)var; | |
| 45 pthread_mutex_lock(&p->lock); | |
| 46 if(!p->set) { | |
| 47 pthread_cond_wait(&p->cond, &p->lock); | |
| 48 } | |
| 49 p->set = 0; | |
| 50 pthread_mutex_unlock(&p->lock); | |
| 51 | |
| 52 } | |
| 53 | |
| 54 void ui_condvar_signal(UiCondVar *var, void *data, int intdata) { | |
| 55 UiPosixCondVar *p = (UiPosixCondVar*)var; | |
| 56 pthread_mutex_lock(&p->lock); | |
| 57 p->var.data = data; | |
| 58 p->var.intdata = intdata; | |
| 59 p->set = 1; | |
| 60 pthread_cond_signal(&p->cond); | |
| 61 pthread_mutex_unlock(&p->lock); | |
| 62 } | |
| 63 | |
| 64 void ui_condvar_destroy(UiCondVar *var) { | |
| 65 UiPosixCondVar *p = (UiPosixCondVar*)var; | |
| 66 pthread_mutex_destroy(&p->lock); | |
| 67 pthread_cond_destroy(&p->cond); | |
| 68 free(p); | |
| 69 | |
| 70 } |
