/* ====================================================================
 * Copyright (c) 1999 The Apache Group.  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.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the Apache Group
 *    for use in the Apache HTTP server project (http://www.apache.org/)."
 *
 * 4. The names "Apache Server" and "Apache Group" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the Apache Group
 *    for use in the Apache HTTP server project (http://www.apache.org/)."
 *
 * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
 * EXPRESSED 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 APACHE GROUP OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Group.
 * For more information on the Apache Group and the Apache HTTP server
 * project, please see <http://www.apache.org/>.
 *
 */

#include "threadproc.h"
#include "apr_thread_proc.h"
#include "apr_general.h"
#include "apr_errno.h"
#include "apr_portable.h"

#ifdef HAVE_PTHREAD_H
/* ***APRDOC********************************************************
 * ap_status_t ap_create_thread_private(ap_context_t *, void *(void *),
 *                                      ap_key_t)
 *    Create and initialize a new thread private address space
 * arg 1) The context to use
 * arg 2) The destructor to use when freeing the private memory.
 * arg 3) The thread private handle.
 */
ap_status_t ap_create_thread_private(ap_context_t *cont, void (*dest)(void *),
                                     struct threadkey_t **key)
{
    ap_status_t stat;
    (*key) = (struct threadkey_t *)ap_palloc(cont, sizeof(struct threadkey_t));

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

    (*key)->cntxt = cont;

    if ((stat = pthread_key_create(&(*key)->key, dest)) == 0) {
        return stat;
    }
    return stat;
}

/* ***APRDOC********************************************************
 * ap_status_t ap_get_thread_private(ap_key_t *, void **)
 *    Get a pointer to the thread private memory
 * arg 1) The handle for the desired thread private memory 
 * arg 2) The data stored in private memory 
 */
ap_status_t ap_get_thread_private(struct threadkey_t *key, void **new)
{
    (*new) = pthread_getspecific(key->key);
    return APR_SUCCESS;
}

/* ***APRDOC********************************************************
 * ap_status_t ap_set_thread_private(ap_key_t *, void *)
 *    Set the data to be stored in thread private memory
 * arg 1) The handle for the desired thread private memory 
 * arg 2) The data to be stored in private memory 
 */
ap_status_t ap_set_thread_private(struct threadkey_t *key, void *priv)
{
    ap_status_t stat;
    if ((stat = pthread_setspecific(key->key, priv)) == 0) {
        return APR_SUCCESS;
    }
    else {
        return stat;
    }
}

/* ***APRDOC********************************************************
 * ap_status_t ap_delete_thread_private(ap_key_t *)
 *    Free the thread private memory
 * arg 1) The handle for the desired thread private memory 
 */
ap_status_t ap_delete_thread_private(struct threadkey_t *key)
{
    ap_status_t stat;
    if ((stat = pthread_key_delete(key->key)) == 0) {
        return APR_SUCCESS; 
    }
    return stat;
}

/* ***APRDOC********************************************************
 * ap_status_t ap_get_threadkeydata(ap_threadkey_t *, void *)
 *    Return the context associated with the current threadkey.
 * arg 1) The currently open threadkey.
 * arg 2) The user data associated with the threadkey.
 */
ap_status_t ap_get_threadkeydata(struct threadkey_t *threadkey, void *data)
{
    if (threadkey != NULL) {
        return ap_get_userdata(threadkey->cntxt, &data);
    }
    else {
        data = NULL;
        return APR_ENOTHDKEY;
    }
}

/* ***APRDOC********************************************************
 * ap_status_t ap_set_threadkeydata(ap_threadkey_t *, void *)
 *    Return the context associated with the current threadkey.
 * arg 1) The currently open threadkey.
 * arg 2) The user data to associate with the threadkey.
 */
ap_status_t ap_set_threadkeydata(struct threadkey_t *threadkey, void *data)
{
    if (threadkey != NULL) {
        return ap_set_userdata(threadkey->cntxt, data);
    }
    else {
        data = NULL;
        return APR_ENOTHDKEY;
    }
}

/* ***APRDOC********************************************************
 * ap_status_t ap_get_os_threadkey(ap_key_t *, ap_os_threadkey_t *)
 *    convert the thread private memory key to os specific type 
 *    from an apr type.
 * arg 1) The apr handle we are converting from.
 * arg 2) The os specific handle we are converting to.
 */
ap_status_t ap_get_os_threadkey(struct threadkey_t *key, ap_os_threadkey_t *thekey)
{
    if (key == NULL) {
        return APR_ENOFILE;
    }
    thekey = &(key->key);
    return APR_SUCCESS;
}

/* ***APRDOC********************************************************
 * ap_status_t ap_put_os_threadkey(ap_context_t *, ap_key_t *, 
 *                                 ap_os_threadkey_t *)
 *    convert the thread private memory key from os specific type to apr type.
 * arg 1) The context to use if it is needed.
 * arg 2) The apr handle we are converting to.
 * arg 3) The os specific handle to convert
 */
ap_status_t ap_put_os_threadkey(ap_context_t *cont, struct threadkey_t **key,
                                ap_os_threadkey_t *thekey)
{
    if (cont == NULL) {
        return APR_ENOCONT;
    }
    if ((*key) == NULL) {
        (*key) = (struct threadkey_t *)ap_palloc(cont, sizeof(struct threadkey_t));
        (*key)->cntxt = cont;
    }
    (*key)->key = *thekey;
    return APR_SUCCESS;
}           
#else
ap_status_t ap_create_thread_private(ap_context_t *cont, void (*dest)(void *),
                                     struct threadkey_t **key)
{
    *key = NULL;
    return APR_SUCCESS;
}

ap_status_t ap_get_thread_private(struct threadkey_t *key, void **new)
{
    (*new) = NULL;
    return APR_SUCCESS;
}

ap_status_t ap_set_thread_private(struct threadkey_t *key, void *priv)
{
    return APR_SUCCESS;
}

ap_status_t ap_delete_thread_private(struct threadkey_t *key)
{
    return APR_SUCCESS; 
}

/* ***APRDOC********************************************************
 * ap_status_t ap_get_threadkeydata(ap_threadkey_t *, void *)
 *    Return the context associated with the current threadkey.
 * arg 1) The currently open threadkey.
 * arg 2) The user data associated with the threadkey.
 */
ap_status_t ap_get_threadkeydata(struct threadkey_t *threadkey, void *data)
{
    return APR_SUCCESS;
}

/* ***APRDOC********************************************************
 * ap_status_t ap_set_threadkeydata(ap_threadkey_t *, void *)
 *    Return the context associated with the current threadkey.
 * arg 1) The currently open threadkey.
 * arg 2) The user data to associate with the threadkey.
 */
ap_status_t ap_set_threadkeydata(struct threadkey_t *threadkey, void *data)
{
    return APR_SUCCESS;
}

ap_status_t ap_get_os_threadkey(struct threadkey_t *key, ap_os_threadkey_t *thekey)
{
    thekey = NULL;
    return APR_SUCCESS;
}

ap_status_t ap_put_os_threadkey(ap_context_t *cont, struct threadkey_t **key,
                                ap_os_threadkey_t *thekey)
{
    return APR_SUCCESS;
}           
#endif