[Appconference-devel] mutex locking

[Jörg S. <ib...@gm...>]

Hi!

What is the worst than can happen when I do NOT lock the conference via 
conf->lock and conflist_lock in conference.c find_member?

struct ast_conf_member *find_member (const char *chan, int lock)
{
	struct ast_conf_member *found = NULL;
	struct ast_conf_member *member;
	struct ast_conference *conf;

	//ast_mutex_lock(&conflist_lock ) ;

	conf = conflist;

	// loop through conf list
	while ( conf != NULL&&  !found )
	{
		// lock conference
		//ast_mutex_lock(&conf->lock );

		member = conf->memberlist ;

		while (member != NULL)
		{
		    if(!strcmp(member->channel_name, chan)) {
			found = member;
			if(lock)
			    ast_mutex_lock(&member->lock);
			break;
		    }
		    member = member->next;
		}

		// unlock conference
		//ast_mutex_unlock(&conf->lock );

		conf = conf->next ;
	}

	// release mutex
	//ast_mutex_unlock(&conflist_lock ) ;

	return found;
}






Best Regards
Jörg