glib/gio/fam/gfamfilemonitor.c
2014-01-31 14:31:55 +01:00

154 lines
4.4 KiB
C

/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
* Copyright (C) 2007 Sebastian Dröge.
*
* This library 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 library 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 library; if not, see <http://www.gnu.org/licenses/>.
*
* Authors: Alexander Larsson <alexl@redhat.com>
* John McCutchan <john@johnmccutchan.com>
* Sebastian Dröge <slomo@circular-chaos.org>
*/
#include "config.h"
#include "gfamfilemonitor.h"
#include <gio/giomodule.h>
#include "fam-helper.h"
struct _GFamFileMonitor
{
GLocalFileMonitor parent_instance;
fam_sub *sub;
};
static gboolean g_fam_file_monitor_cancel (GFileMonitor* monitor);
G_DEFINE_DYNAMIC_TYPE (GFamFileMonitor, g_fam_file_monitor, G_TYPE_LOCAL_FILE_MONITOR)
static void
g_fam_file_monitor_finalize (GObject *object)
{
GFamFileMonitor *fam_monitor = G_FAM_FILE_MONITOR (object);
fam_sub *sub = fam_monitor->sub;
if (sub) {
if (!_fam_sub_cancel (sub))
g_warning ("Unexpected error cancelling fam monitor");
fam_monitor->sub = NULL;
}
if (G_OBJECT_CLASS (g_fam_file_monitor_parent_class)->finalize)
(*G_OBJECT_CLASS (g_fam_file_monitor_parent_class)->finalize) (object);
}
static GObject *
g_fam_file_monitor_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_properties)
{
GObject *obj;
GFamFileMonitorClass *klass;
GObjectClass *parent_class;
GFamFileMonitor *fam_monitor;
const gchar *filename = NULL;
fam_sub *sub = NULL;
klass = G_FAM_FILE_MONITOR_CLASS (g_type_class_peek (G_TYPE_FAM_FILE_MONITOR));
parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
obj = parent_class->constructor (type,
n_construct_properties,
construct_properties);
fam_monitor = G_FAM_FILE_MONITOR (obj);
filename = G_LOCAL_FILE_MONITOR (obj)->filename;
g_assert (filename != NULL);
sub = _fam_sub_add (filename, FALSE, fam_monitor);
/* FIXME: what to do about errors here? we can't return NULL or another
* kind of error and an assertion is probably too hard */
g_assert (sub != NULL);
fam_monitor->sub = sub;
return obj;
}
static void
g_fam_file_monitor_class_finalize (GFamFileMonitorClass *klass)
{
}
static gboolean
g_fam_file_monitor_is_supported (void)
{
return _fam_sub_startup ();
}
static void
g_fam_file_monitor_class_init (GFamFileMonitorClass* klass)
{
GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
GLocalFileMonitorClass *local_file_monitor_class = G_LOCAL_FILE_MONITOR_CLASS (klass);
gobject_class->finalize = g_fam_file_monitor_finalize;
gobject_class->constructor = g_fam_file_monitor_constructor;
file_monitor_class->cancel = g_fam_file_monitor_cancel;
local_file_monitor_class->is_supported = g_fam_file_monitor_is_supported;
}
static void
g_fam_file_monitor_init (GFamFileMonitor* monitor)
{
}
static gboolean
g_fam_file_monitor_cancel (GFileMonitor* monitor)
{
GFamFileMonitor *fam_monitor = G_FAM_FILE_MONITOR (monitor);
fam_sub *sub = fam_monitor->sub;
if (sub) {
if (!_fam_sub_cancel (sub))
g_warning ("Unexpected error cancelling fam monitor");
fam_monitor->sub = NULL;
}
if (G_FILE_MONITOR_CLASS (g_fam_file_monitor_parent_class)->cancel)
(*G_FILE_MONITOR_CLASS (g_fam_file_monitor_parent_class)->cancel) (monitor);
return TRUE;
}
void
g_fam_file_monitor_register (GIOModule *module)
{
g_fam_file_monitor_register_type (G_TYPE_MODULE (module));
g_io_extension_point_implement (G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME,
G_TYPE_FAM_FILE_MONITOR,
"fam",
10);
g_io_extension_point_implement (G_NFS_FILE_MONITOR_EXTENSION_POINT_NAME,
G_TYPE_FAM_FILE_MONITOR,
"fam",
10);
}