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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" 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 name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``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 SOFTWARE FOUNDATION 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 Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "misc.h"
#include "../../locks/unix/locks.h"
/* ***APRDOC********************************************************
* ap_status_t ap_create_context(ap_context_t **newcont, ap_context_t *cont)
* Create a new context.
* arg 1) The context we have just created.
* arg 2) The parent context. If this is NULL, the new context is a root
* context. If it is non-NULL, the new context will inherit all
* of it's parent context's attributes, except the ap_context_t will be a
* sub-pool.
*/
ap_status_t ap_create_context(struct ap_context_t **newcont, struct ap_context_t *cont)
{
struct ap_context_t *new;
ap_pool_t *pool;
if (cont) {
pool = ap_make_sub_pool(cont->pool, cont->apr_abort);
}
else {
pool = ap_make_sub_pool(NULL, NULL);
}
if (pool == NULL) {
return APR_ENOPOOL;
}
new = (struct ap_context_t *)ap_palloc(cont, sizeof(struct ap_context_t));
new->pool = pool;
new->prog_data = NULL;
new->apr_abort = NULL;
*newcont = new;
return APR_SUCCESS;
}
/* ***APRDOC********************************************************
* ap_status_t ap_destroy_context(ap_context_t *cont)
* Free the context and all of it's child contexts'.
* arg 1) The context to free.
*/
ap_status_t ap_destroy_context(struct ap_context_t *cont)
{
ap_destroy_pool(cont);
return APR_SUCCESS;
}
/* ***APRDOC********************************************************
* ap_status_t ap_set_userdata(void *data, char *key,
* ap_status_t (*cleanup) (void *),
* ap_context_t *cont)
* Set the data associated with the current context.
* arg 1) The user data associated with the context.
* arg 2) The key to use for association
* arg 3) The cleanup program to use to cleanup the data;
* arg 4) The current context.
* NOTE: The data to be attached to the context should have the same
* life span as the context it is being attached to.
*
* Users of APR must take EXTREME care when choosing a key to
* use for their data. It is possible to accidentally overwrite
* data by choosing a key that another part of the program is using
* It is advised that steps are taken to ensure that a unique
* key is used at all times.
*/
ap_status_t ap_set_userdata(void *data, char *key,
ap_status_t (*cleanup) (void *),
struct ap_context_t *cont)
{
datastruct *dptr = NULL, *dptr2 = NULL;
if (cont) {
dptr = cont->prog_data;
while (dptr) {
if (!strcmp(dptr->key, key))
break;
dptr2 = dptr;
dptr = dptr->next;
}
if (dptr == NULL) {
dptr = ap_palloc(cont, sizeof(datastruct));
dptr->next = dptr->prev = NULL;
dptr->key = ap_pstrdup(cont, key);
if (dptr2) {
dptr2->next = dptr;
dptr->prev = dptr2;
}
else {
cont->prog_data = dptr;
}
}
dptr->data = data;
ap_register_cleanup(cont, dptr->data, cleanup, cleanup);
return APR_SUCCESS;
}
return APR_ENOCONT;
}
/* ***APRDOC********************************************************
* ap_status_t ap_get_userdata(void **data, char *key, ap_context_t *cont)
* Return the data associated with the current context.
* arg 1) The key for the data to retrieve
* arg 2) The user data associated with the context.
* arg 3) The current context.
*/
ap_status_t ap_get_userdata(void **data, char *key, struct ap_context_t *cont)
{
datastruct *dptr = NULL;
if (cont) {
dptr = cont->prog_data;
while (dptr) {
if (!strcmp(dptr->key, key)) {
break;
}
dptr = dptr->next;
}
if (dptr) {
(*data) = dptr->data;
}
else {
(*data) = NULL;
}
return APR_SUCCESS;
}
return APR_ENOCONT;
}
/* ***APRDOC********************************************************
* ap_status_t ap_initialize(void)
* Setup any APR internal data structures. This MUST be the first
* function called for any APR program.
*/
ap_status_t ap_initialize(void)
{
ap_status_t status;
setup_lock();
status = ap_init_alloc();
return status;
}
/* ***APRDOC*******************************************************
* void ap_terminate(void)
* Tear down any APR internal data structures which aren't
* torn down automatically. An APR program must call this
* function at termination once it has stopped using APR
* services.
*/
void ap_terminate(void)
{
ap_term_alloc();
}
/* ***APRDOC********************************************************
* ap_status_t ap_set_abort(int (*apr_abort)(int retcode), ap_context_t *cont)
* Set the APR_ABORT function.
* NOTE: This is in for backwards compatability. If the program using
* APR wants APR to exit on a memory allocation error, then this
* function should be called to set the function to use in order
* to actually exit the program. If this function is not called,
* then APR will return an error and expect the calling program to
* deal with the error accordingly.
*/
ap_status_t ap_set_abort(int (*apr_abort)(int retcode), struct ap_context_t *cont)
{
if (cont == NULL) {
return APR_ENOCONT;
}
else {
cont->apr_abort = apr_abort;
return APR_SUCCESS;
}
}
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