ares_destroy.c

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/* Copyright 1998 by the Massachusetts Institute of Technology.
 *
 * 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 <stdlib.h>
#include "ares.h"
#include "ares_private.h"
 
 
 
void ares_destroy(ares_channel channel)
{
   ares_destroy_internal(channel, 0);
}
 
void ares_destroy_suppress_callbacks(ares_channel channel)
{
   ares_destroy_internal(channel, 1);
}
 
void ares_destroy_internal(ares_channel channel, int suppressCallbacks)
{
   int i;
   struct query *query;
 
   for (i = 0; i < channel->nservers; i++) {
      ares__close_poll(channel, i);
      ares__close_sockets(&channel->servers[i]);
   }
   free(channel->servers);
   for (i = 0; i < channel->ndomains; i++)
      free(channel->domains[i]);
   free(channel->domains);
   free(channel->sortlist);
   free(channel->lookups);
   while (channel->queries)
   {
      query = channel->queries;
      channel->queries = query->next;
      if (!suppressCallbacks)
      {
         query->callback(query->arg, ARES_EDESTRUCTION, NULL, 0);
      }      
      free(query->tcpbuf);
      free(query->skip_server);
      free(query);
   }
   free(channel);
}