/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2024 Olaf Wintermann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "condvar.h"
#include <stdlib.h>
UiCondVar* ui_condvar_create(void) {
UiPosixCondVar *var = malloc(sizeof(UiPosixCondVar));
var->var.data = NULL;
var->var.intdata = 0;
var->set = 0;
pthread_mutex_init(&var->lock, NULL);
pthread_cond_init(&var->cond, NULL);
return (UiCondVar*)var;
}
void ui_condvar_wait(UiCondVar *var) {
UiPosixCondVar *p = (UiPosixCondVar*)var;
pthread_mutex_lock(&p->lock);
if(!p->set) {
pthread_cond_wait(&p->cond, &p->lock);
}
p->set = 0;
pthread_mutex_unlock(&p->lock);
}
void ui_condvar_signal(UiCondVar *var, void *data, int intdata) {
UiPosixCondVar *p = (UiPosixCondVar*)var;
pthread_mutex_lock(&p->lock);
p->var.data = data;
p->var.intdata = intdata;
p->set = 1;
pthread_cond_signal(&p->cond);
pthread_mutex_unlock(&p->lock);
}
void ui_condvar_destroy(UiCondVar *var) {
UiPosixCondVar *p = (UiPosixCondVar*)var;
pthread_mutex_destroy(&p->lock);
pthread_cond_destroy(&p->cond);
free(p);
}