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proc/28145/cwd/usr/local/src/apr-1.5.2/locks/netware/_[ Not.Writable ]

File://proc/28145/cwd/usr/local/src/apr-1.5.2/locks/netware/thread_mutex.c

/* 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"
#include "apr_private.h"
#include "apr_general.h"
#include "apr_strings.h"
#include "apr_arch_thread_mutex.h"
#include "apr_portable.h"

static apr_status_t thread_mutex_cleanup(void *data)
{
    apr_thread_mutex_t *mutex = (apr_thread_mutex_t *)data;

    NXMutexFree(mutex->mutex);        
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex,
                                                  unsigned int flags,
                                                  apr_pool_t *pool)
{
    apr_thread_mutex_t *new_mutex = NULL;

    /* XXX: Implement _UNNESTED flavor and favor _DEFAULT for performance
     */
    if (flags & APR_THREAD_MUTEX_UNNESTED) {
        return APR_ENOTIMPL;
    }
    new_mutex = (apr_thread_mutex_t *)apr_pcalloc(pool, sizeof(apr_thread_mutex_t));
	
	if(new_mutex ==NULL) {
        return APR_ENOMEM;
    }     
    new_mutex->pool = pool;

    new_mutex->mutex = NXMutexAlloc(NX_MUTEX_RECURSIVE, 0, NULL);
    
    if(new_mutex->mutex == NULL)
        return APR_ENOMEM;

    apr_pool_cleanup_register(new_mutex->pool, new_mutex, 
                                (void*)thread_mutex_cleanup,
                                apr_pool_cleanup_null);
   *mutex = new_mutex;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex)
{
    NXLock(mutex->mutex);
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex)
{
    if (!NXTryLock(mutex->mutex))
        return APR_EBUSY;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex)
{
    NXUnlock(mutex->mutex);
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex)
{
    apr_status_t stat;
    if ((stat = thread_mutex_cleanup(mutex)) == APR_SUCCESS) {
        apr_pool_cleanup_kill(mutex->pool, mutex, thread_mutex_cleanup);
        return APR_SUCCESS;
    }
    return stat;
}

APR_POOL_IMPLEMENT_ACCESSOR(thread_mutex)

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