/* Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "apr.h"

#if APR_HAS_THREADS

#include "apr_arch_thread_mutex.h"

#include "apr_arch_thread_cond.h"

static apr_status_t thread_cond_cleanup(void *data)

{

    apr_thread_cond_t *cond = (apr_thread_cond_t *)data;

    apr_status_t rv;

    rv = pthread_cond_destroy(&cond->cond);

#ifdef HAVE_ZOS_PTHREADS

    if (rv) {

        rv = errno;

    }

#endif

    return rv;

}

APR_DECLARE(apr_status_t) apr_thread_cond_create(apr_thread_cond_t **cond,

                                                 apr_pool_t *pool)

{

    apr_thread_cond_t *new_cond;

    apr_status_t rv;

    new_cond = apr_palloc(pool, sizeof(apr_thread_cond_t));

    new_cond->pool = pool;

    if ((rv = pthread_cond_init(&new_cond->cond, NULL))) {

#ifdef HAVE_ZOS_PTHREADS

        rv = errno;

#endif

        return rv;

    }

    apr_pool_cleanup_register(new_cond->pool,

                              (void *)new_cond, thread_cond_cleanup,

                              apr_pool_cleanup_null);

    *cond = new_cond;

    return APR_SUCCESS;

}

APR_DECLARE(apr_status_t) apr_thread_cond_wait(apr_thread_cond_t *cond,

                                               apr_thread_mutex_t *mutex)

{

    apr_status_t rv;

    rv = pthread_cond_wait(&cond->cond, &mutex->mutex);

#ifdef HAVE_ZOS_PTHREADS

    if (rv) {

        rv = errno;

    }

#endif

    return rv;

}

APR_DECLARE(apr_status_t) apr_thread_cond_timedwait(apr_thread_cond_t *cond,

                                                    apr_thread_mutex_t *mutex,

                                                    apr_interval_time_t timeout)

{

    apr_status_t rv;

    if (timeout < 0) {

        rv = pthread_cond_wait(&cond->cond, &mutex->mutex);

#ifdef HAVE_ZOS_PTHREADS

        if (rv) {

            rv = errno;

        }

#endif

    }

    else {

        apr_time_t then;

        struct timespec abstime;

        then = apr_time_now() + timeout;

        abstime.tv_sec = apr_time_sec(then);

        abstime.tv_nsec = apr_time_usec(then) * 1000; /* nanoseconds */

        rv = pthread_cond_timedwait(&cond->cond, &mutex->mutex, &abstime);

#ifdef HAVE_ZOS_PTHREADS

        if (rv) {

            rv = errno;

        }

#endif

        if (ETIMEDOUT == rv) {

            return APR_TIMEUP;

        }

    }

    return rv;

}

APR_DECLARE(apr_status_t) apr_thread_cond_signal(apr_thread_cond_t *cond)

{

    apr_status_t rv;

    rv = pthread_cond_signal(&cond->cond);

#ifdef HAVE_ZOS_PTHREADS

    if (rv) {

        rv = errno;

    }

#endif

    return rv;

}

APR_DECLARE(apr_status_t) apr_thread_cond_broadcast(apr_thread_cond_t *cond)

{

    apr_status_t rv;

    rv = pthread_cond_broadcast(&cond->cond);

#ifdef HAVE_ZOS_PTHREADS

    if (rv) {

        rv = errno;

    }

#endif

    return rv;

}

APR_DECLARE(apr_status_t) apr_thread_cond_destroy(apr_thread_cond_t *cond)

{

    return apr_pool_cleanup_run(cond->pool, cond, thread_cond_cleanup);

}

APR_POOL_IMPLEMENT_ACCESSOR(thread_cond)

#endif /* APR_HAS_THREADS */