/*	$OpenBSD: rthread_cond.c,v 1.5 2019/01/29 17:40:26 mpi Exp $ */
/*
 * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
 * Copyright (c) 2012 Philip Guenther <guenther@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include "sgx_trts.h"
#include "sgx_spinlock.h"
#include "pthread_imp.h"

#include "util.h"

int pthread_cond_init(pthread_cond_t *condp, const pthread_condattr_t *attr)
{
    UNUSED(attr);
    pthread_cond_t cond;
    cond = (pthread_cond_t)calloc(1, sizeof(*cond));
    if (cond == NULL)
        return (ENOMEM);
    *condp = cond;
    return sgx_thread_cond_init(cond, NULL);
}

int pthread_cond_destroy(pthread_cond_t *condp)
{
    int error;
    pthread_cond_t cond;
    cond = *condp;
    if (cond != NULL) {
        error = sgx_thread_cond_destroy(cond);
        if(0 != error)
            return error;
        free(cond);
    }
    *condp = NULL;
    return 0;
}

int pthread_cond_wait(pthread_cond_t *condp, pthread_mutex_t *mutexp)
{
    pthread_cond_t cond;
    int error;
    if (*condp == NULL) {
        if ((error = pthread_cond_init(condp, NULL)))
            return (error);
    }
    cond = *condp;
    return sgx_thread_cond_wait(cond, *mutexp);
}

int pthread_cond_signal(pthread_cond_t *condp)
{
    pthread_cond_t cond;
    if (*condp == NULL)
        return (0);
    cond = *condp;
    return sgx_thread_cond_signal(cond);
}

int pthread_cond_broadcast(pthread_cond_t *condp)
{
    pthread_cond_t cond;
    if (*condp == NULL)
        return (0);
    cond = *condp;
    return sgx_thread_cond_broadcast(cond);
}