2 /* Copyright 1998 by the Massachusetts Institute of Technology.
3 * Copyright (C) 2004-2011 by Daniel Stenberg
5 * Permission to use, copy, modify, and distribute this
6 * software and its documentation for any purpose and without
7 * fee is hereby granted, provided that the above copyright
8 * notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting
10 * documentation, and that the name of M.I.T. not be used in
11 * advertising or publicity pertaining to distribution of the
12 * software without specific, written prior permission.
13 * M.I.T. makes no representations about the suitability of
14 * this software for any purpose. It is provided "as is"
15 * without express or implied warranty.
18 #include "ares_setup.h"
23 #include "ares_private.h"
25 void ares_destroy_options(struct ares_options *options)
30 free(options->servers);
31 for (i = 0; i < options->ndomains; i++)
32 free(options->domains[i]);
34 free(options->domains);
36 free(options->sortlist);
38 free(options->lookups);
41 void ares_destroy(ares_channel channel)
45 struct list_node* list_head;
46 struct list_node* list_node;
51 list_head = &(channel->all_queries);
52 for (list_node = list_head->next; list_node != list_head; )
54 query = list_node->data;
55 list_node = list_node->next; /* since we're deleting the query */
56 query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0);
57 ares__free_query(query);
60 /* Freeing the query should remove it from all the lists in which it sits,
61 * so all query lists should be empty now.
63 assert(ares__is_list_empty(&(channel->all_queries)));
64 for (i = 0; i < ARES_QID_TABLE_SIZE; i++)
66 assert(ares__is_list_empty(&(channel->queries_by_qid[i])));
68 for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++)
70 assert(ares__is_list_empty(&(channel->queries_by_timeout[i])));
74 ares__destroy_servers_state(channel);
76 if (channel->domains) {
77 for (i = 0; i < channel->ndomains; i++)
78 free(channel->domains[i]);
79 free(channel->domains);
83 free(channel->sortlist);
86 free(channel->lookups);
91 void ares__destroy_servers_state(ares_channel channel)
93 struct server_state *server;
98 for (i = 0; i < channel->nservers; i++)
100 server = &channel->servers[i];
101 ares__close_sockets(channel, server);
102 assert(ares__is_list_empty(&server->queries_to_server));
104 free(channel->servers);
105 channel->servers = NULL;
107 channel->nservers = -1;