Implemented the idle "spawn" in LmBlockingResolver.
In order to simulate the asynchronous API of LmResolver the synchronous
LmBlockingResolver runs in an idle callback. That means the lm_resolver_lookup
call will return just as it does in the asynchronous version and instead the
result will come through the given callback.
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2008 Imendio AB
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include "lm-marshal.h"
#include "lm-blocking-resolver.h"
#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), LM_TYPE_BLOCKING_RESOLVER, LmBlockingResolverPriv))
typedef struct LmBlockingResolverPriv LmBlockingResolverPriv;
struct LmBlockingResolverPriv {
guint idle_id;
};
static void blocking_resolver_finalize (GObject *object);
static void blocking_resolver_lookup (LmResolver *resolver);
static void blocking_resolver_cancel (LmResolver *resolver);
G_DEFINE_TYPE (LmBlockingResolver, lm_blocking_resolver, LM_TYPE_RESOLVER)
static void
lm_blocking_resolver_class_init (LmBlockingResolverClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
LmResolverClass *resolver_class = LM_RESOLVER_CLASS (class);
object_class->finalize = blocking_resolver_finalize;
resolver_class->lookup = blocking_resolver_lookup;
resolver_class->cancel = blocking_resolver_cancel;
g_type_class_add_private (object_class, sizeof (LmBlockingResolverPriv));
}
static void
lm_blocking_resolver_init (LmBlockingResolver *blocking_resolver)
{
LmBlockingResolverPriv *priv;
priv = GET_PRIV (blocking_resolver);
}
static void
blocking_resolver_finalize (GObject *object)
{
LmBlockingResolverPriv *priv;
priv = GET_PRIV (object);
(G_OBJECT_CLASS (lm_blocking_resolver_parent_class)->finalize) (object);
}
static gboolean
blocking_resolver_idle_lookup (LmBlockingResolver *resolver)
{
LmBlockingResolverPriv *priv = GET_PRIV (resolver);
/* Start the DNS querying */
priv->idle_id = 0;
return FALSE;
}
static void
blocking_resolver_lookup (LmResolver *resolver)
{
LmBlockingResolverPriv *priv;
g_return_if_fail (LM_IS_BLOCKING_RESOLVER (resolver));
priv = GET_PRIV (resolver);
priv->idle_id = g_idle_add ((GSourceFunc) blocking_resolver_idle_lookup,
resolver);
}
static void
blocking_resolver_cancel (LmResolver *resolver)
{
LmBlockingResolverPriv *priv;
g_return_if_fail (LM_IS_BLOCKING_RESOLVER (resolver));
priv = GET_PRIV (resolver);
if (priv->idle_id > 0) {
g_source_remove (priv->idle_id);
priv->idle_id = 0;
}
}