73ef4ff3
 Hu Chunming
提交三方库
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/* Copyright 1998 by the Massachusetts Institute of Technology.
* Copyright (C) 2004-2011 by Daniel Stenberg
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/
#include "ares_setup.h"
#include <assert.h>
#include "ares.h"
#include "ares_private.h"
void ares_destroy_options(struct ares_options *options)
{
int i;
if(options->servers)
ares_free(options->servers);
for (i = 0; i < options->ndomains; i++)
ares_free(options->domains[i]);
if(options->domains)
ares_free(options->domains);
if(options->sortlist)
ares_free(options->sortlist);
if(options->lookups)
ares_free(options->lookups);
if(options->resolvconf_path)
ares_free(options->resolvconf_path);
}
void ares_destroy(ares_channel channel)
{
int i;
struct query *query;
struct list_node* list_head;
struct list_node* list_node;
if (!channel)
return;
list_head = &(channel->all_queries);
for (list_node = list_head->next; list_node != list_head; )
{
query = list_node->data;
list_node = list_node->next; /* since we're deleting the query */
query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0);
ares__free_query(query);
}
#ifndef NDEBUG
/* Freeing the query should remove it from all the lists in which it sits,
* so all query lists should be empty now.
*/
assert(ares__is_list_empty(&(channel->all_queries)));
for (i = 0; i < ARES_QID_TABLE_SIZE; i++)
{
assert(ares__is_list_empty(&(channel->queries_by_qid[i])));
}
for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++)
{
assert(ares__is_list_empty(&(channel->queries_by_timeout[i])));
}
#endif
ares__destroy_servers_state(channel);
if (channel->domains) {
for (i = 0; i < channel->ndomains; i++)
ares_free(channel->domains[i]);
ares_free(channel->domains);
}
if(channel->sortlist)
ares_free(channel->sortlist);
if (channel->lookups)
ares_free(channel->lookups);
if (channel->resolvconf_path)
ares_free(channel->resolvconf_path);
ares_free(channel);
}
void ares__destroy_servers_state(ares_channel channel)
{
struct server_state *server;
int i;
if (channel->servers)
{
for (i = 0; i < channel->nservers; i++)
{
server = &channel->servers[i];
ares__close_sockets(channel, server);
assert(ares__is_list_empty(&server->queries_to_server));
}
ares_free(channel->servers);
channel->servers = NULL;
}
channel->nservers = -1;
}
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