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/*
* astobj2_global - global containers for AO2 objects.
*
* Copyright (C) 2006 Marta Carbone, Luigi Rizzo - Univ. di Pisa, Italy
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Functions implementing ao2_global_obj routines.
*
* \author Richard Mudgett <rmudgett@digium.com>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/astobj2.h"
#include "asterisk/utils.h"
void *__ao2_global_obj_replace(struct ao2_global_obj *holder, void *obj, const char *tag, const char *file, int line, const char *func, const char *name)
{
void *obj_old;
if (!holder) {
/* For sanity */
ast_log(LOG_ERROR, "Must be called with a global object!\n");
ast_assert(0);
return NULL;
}
if (__ast_rwlock_wrlock(file, line, func, &holder->lock, name)) {
/* Could not get the write lock. */
ast_assert(0);
return NULL;
}
if (obj) {
__ao2_ref(obj, +1, tag, file, line, func);
}
obj_old = holder->obj;
holder->obj = obj;
__ast_rwlock_unlock(file, line, func, &holder->lock, name);
return obj_old;
}
int __ao2_global_obj_replace_unref(struct ao2_global_obj *holder, void *obj, const char *tag, const char *file, int line, const char *func, const char *name)
{
void *obj_old;
obj_old = __ao2_global_obj_replace(holder, obj, tag, file, line, func, name);
if (obj_old) {
__ao2_ref(obj_old, -1, tag, file, line, func);
return 1;
}
return 0;
}
void *__ao2_global_obj_ref(struct ao2_global_obj *holder, const char *tag, const char *file, int line, const char *func, const char *name)
{
void *obj;
if (!holder) {
/* For sanity */
ast_log(LOG_ERROR, "Must be called with a global object!\n");
ast_assert(0);
return NULL;
}
if (__ast_rwlock_rdlock(file, line, func, &holder->lock, name)) {
/* Could not get the read lock. */
ast_assert(0);
return NULL;
}
obj = holder->obj;
if (obj) {
__ao2_ref(obj, +1, tag, file, line, func);
}
__ast_rwlock_unlock(file, line, func, &holder->lock, name);
return obj;
}