Sat Aug 6 00:39:29 2011

Asterisk developer's documentation


global_datastores.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2007, Digium, Inc.
00005  *
00006  * Mark Michelson <mmichelson@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief globally-accessible datastore information and callbacks
00022  *
00023  * \author Mark Michelson <mmichelson@digium.com>
00024  */
00025 
00026 #include "asterisk.h"
00027 
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 172517 $")
00029 
00030 #include "asterisk/global_datastores.h"
00031 #include "asterisk/linkedlists.h"
00032 
00033 static void dialed_interface_destroy(void *data)
00034 {
00035    struct ast_dialed_interface *di = NULL;
00036    AST_LIST_HEAD(, ast_dialed_interface) *dialed_interface_list = data;
00037    
00038    if (!dialed_interface_list) {
00039       return;
00040    }
00041 
00042    AST_LIST_LOCK(dialed_interface_list);
00043    while ((di = AST_LIST_REMOVE_HEAD(dialed_interface_list, list)))
00044       ast_free(di);
00045    AST_LIST_UNLOCK(dialed_interface_list);
00046 
00047    AST_LIST_HEAD_DESTROY(dialed_interface_list);
00048    ast_free(dialed_interface_list);
00049 }
00050 
00051 static void *dialed_interface_duplicate(void *data)
00052 {
00053    struct ast_dialed_interface *di = NULL;
00054    AST_LIST_HEAD(, ast_dialed_interface) *old_list;
00055    AST_LIST_HEAD(, ast_dialed_interface) *new_list = NULL;
00056 
00057    if(!(old_list = data)) {
00058       return NULL;
00059    }
00060 
00061    if(!(new_list = ast_calloc(1, sizeof(*new_list)))) {
00062       return NULL;
00063    }
00064 
00065    AST_LIST_HEAD_INIT(new_list);
00066    AST_LIST_LOCK(old_list);
00067    AST_LIST_TRAVERSE(old_list, di, list) {
00068       struct ast_dialed_interface *di2 = ast_calloc(1, sizeof(*di2) + strlen(di->interface));
00069       if(!di2) {
00070          AST_LIST_UNLOCK(old_list);
00071          dialed_interface_destroy(new_list);
00072          return NULL;
00073       }
00074       strcpy(di2->interface, di->interface);
00075       AST_LIST_INSERT_TAIL(new_list, di2, list);
00076    }
00077    AST_LIST_UNLOCK(old_list);
00078 
00079    return new_list;
00080 }
00081 
00082 const struct ast_datastore_info dialed_interface_info = {
00083    .type = "dialed-interface",
00084    .destroy = dialed_interface_destroy,
00085    .duplicate = dialed_interface_duplicate,
00086 };

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