Mon Jul 14 17:24:57 2008

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: 102653 $")
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    AST_LIST_LOCK(dialed_interface_list);
00042    while ((di = AST_LIST_REMOVE_HEAD(dialed_interface_list, list)))
00043       ast_free(di);
00044    AST_LIST_UNLOCK(dialed_interface_list);
00045 
00046    AST_LIST_HEAD_DESTROY(dialed_interface_list);
00047    ast_free(dialed_interface_list);
00048 }
00049 
00050 static void *dialed_interface_duplicate(void *data)
00051 {
00052    struct ast_dialed_interface *di = NULL;
00053    AST_LIST_HEAD(, ast_dialed_interface) *old_list;
00054    AST_LIST_HEAD(, ast_dialed_interface) *new_list = NULL;
00055 
00056    if(!(old_list = data))
00057       return NULL;
00058 
00059    if(!(new_list = ast_calloc(1, sizeof(*new_list))))
00060       return NULL;
00061 
00062    AST_LIST_HEAD_INIT(new_list);
00063    AST_LIST_LOCK(old_list);
00064    AST_LIST_TRAVERSE(old_list, di, list) {
00065       struct ast_dialed_interface *di2 = ast_calloc(1, sizeof(*di2) + strlen(di->interface));
00066       if(!di2) {
00067          AST_LIST_UNLOCK(old_list);
00068          dialed_interface_destroy(new_list);
00069          return NULL;
00070       }
00071       strcpy(di2->interface, di->interface);
00072       AST_LIST_INSERT_TAIL(new_list, di2, list);
00073    }
00074    AST_LIST_UNLOCK(old_list);
00075 
00076    return new_list;
00077 }
00078 
00079 const struct ast_datastore_info dialed_interface_info = {
00080    .type ="dialed-interface",
00081    .destroy = dialed_interface_destroy,
00082    .duplicate = dialed_interface_duplicate,
00083 };

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