/* 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_portable.h"
#include "apr_arch_threadproc.h"

#if APR_HAS_THREADS

#if APR_HAVE_PTHREAD_H
APR_DECLARE(apr_status_t) apr_threadkey_private_create(apr_threadkey_t **key,
                                                       void (*dest)(void *),
                                                       apr_pool_t *pool)
{
    (*key) = (apr_threadkey_t *)apr_pcalloc(pool, sizeof(apr_threadkey_t));

    if ((*key) == NULL) {
        return APR_ENOMEM;
    }

    (*key)->pool = pool;

    return pthread_key_create(&(*key)->key, dest);

}

APR_DECLARE(apr_status_t) apr_threadkey_private_get(void **new,
                                                    apr_threadkey_t *key)
{
#ifdef PTHREAD_GETSPECIFIC_TAKES_TWO_ARGS
    if (pthread_getspecific(key->key,new))
       *new = NULL;
#else
    (*new) = pthread_getspecific(key->key);
#endif
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_threadkey_private_set(void *priv,
                                                    apr_threadkey_t *key)
{
    apr_status_t stat;

    if ((stat = pthread_setspecific(key->key, priv)) == 0) {
        return APR_SUCCESS;
    }
    else {
        return stat;
    }
}

APR_DECLARE(apr_status_t) apr_threadkey_private_delete(apr_threadkey_t *key)
{
#ifdef HAVE_PTHREAD_KEY_DELETE
    apr_status_t stat;

    if ((stat = pthread_key_delete(key->key)) == 0) {
        return APR_SUCCESS;
    }

    return stat;
#else
    return APR_ENOTIMPL;
#endif
}

APR_DECLARE(apr_status_t) apr_threadkey_data_get(void **data, const char *key,
                                                 apr_threadkey_t *threadkey)
{
    return apr_pool_userdata_get(data, key, threadkey->pool);
}

APR_DECLARE(apr_status_t) apr_threadkey_data_set(void *data, const char *key,
                              apr_status_t (*cleanup)(void *),
                              apr_threadkey_t *threadkey)
{
    return apr_pool_userdata_set(data, key, cleanup, threadkey->pool);
}

APR_DECLARE(apr_status_t) apr_os_threadkey_get(apr_os_threadkey_t *thekey,
                                               apr_threadkey_t *key)
{
    *thekey = key->key;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_os_threadkey_put(apr_threadkey_t **key,
                                               apr_os_threadkey_t *thekey,
                                               apr_pool_t *pool)
{
    if (pool == NULL) {
        return APR_ENOPOOL;
    }

    if ((*key) == NULL) {
        (*key) = (apr_threadkey_t *)apr_pcalloc(pool, sizeof(apr_threadkey_t));
        (*key)->pool = pool;
    }

    (*key)->key = *thekey;
    return APR_SUCCESS;
}
#endif /* APR_HAVE_PTHREAD_H */
#endif /* APR_HAS_THREADS */

#if !APR_HAS_THREADS

/* avoid warning for no prototype */
APR_DECLARE(apr_status_t) apr_os_threadkey_get(void);

APR_DECLARE(apr_status_t) apr_os_threadkey_get(void)
{
    return APR_ENOTIMPL;
}

#endif