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mutter/src/core/meta-idle-monitor.c
Giovanni Campagna 348f3007d9 MetaIdleMonitor: protect the monitor instance while calling destroy notify 
The destroy notify for a DBus watch holds a reference to the IdleMonitor,
but the IdleMonitorWatch object doesn't (it knows all watches will
be destroyed before the monitor is, so it doesn't need one). This
means that the DBus watch reference can be the only one keeping
the IdleMonitor alive (expecially true for device idle monitors,
which are only used by g-s-d/cursor), and that means that calling
the destroy notify freezes the monitor (and the next X calls
access garbage).

https://bugzilla.gnome.org/show_bug.cgi?id=708420
2013-09-26 18:57:49 +02:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright 2013 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU 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
* General Public License for more details.
*
* You should have received a copy of the GNU 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.
*
* Adapted from gnome-session/gnome-session/gs-idle-monitor.c and
* from gnome-desktop/libgnome-desktop/gnome-idle-monitor.c
*/
/**
* SECTION:idle-monitor
* @title: MetaIdleMonitor
* @short_description: Mutter idle counter (similar to X's IDLETIME)
*/
#include "config.h"
#include <string.h>
#include <clutter/clutter.h>
#include <X11/Xlib.h>
#include <X11/extensions/sync.h>
#include <meta/util.h>
#include <meta/main.h>
#include <meta/meta-idle-monitor.h>
#include "display-private.h"
#include "meta-idle-monitor-private.h"
#include "meta-dbus-idle-monitor.h"
G_STATIC_ASSERT(sizeof(unsigned long) == sizeof(gpointer));
struct _MetaIdleMonitor
{
GObject parent_instance;
GHashTable *watches;
GHashTable *alarms;
int device_id;
/* X11 implementation */
Display *display;
int sync_event_base;
XSyncCounter counter;
XSyncAlarm user_active_alarm;
/* Wayland implementation */
guint64 last_event_time;
};
struct _MetaIdleMonitorClass
{
GObjectClass parent_class;
};
typedef struct
{
MetaIdleMonitor *monitor;
guint id;
MetaIdleMonitorWatchFunc callback;
gpointer user_data;
GDestroyNotify notify;
guint64 timeout_msec;
/* x11 */
XSyncAlarm xalarm;
int idle_source_id;
/* wayland */
GSource *timeout_source;
} MetaIdleMonitorWatch;
enum
{
PROP_0,
PROP_DEVICE_ID,
PROP_LAST,
};
static GParamSpec *obj_props[PROP_LAST];
G_DEFINE_TYPE (MetaIdleMonitor, meta_idle_monitor, G_TYPE_OBJECT)
static MetaIdleMonitor *device_monitors[256];
static int device_id_max;
static gint64
_xsyncvalue_to_int64 (XSyncValue value)
{
return ((guint64) XSyncValueHigh32 (value)) << 32
| (guint64) XSyncValueLow32 (value);
}
#define GUINT64_TO_XSYNCVALUE(value, ret) XSyncIntsToValue (ret, (value) & 0xFFFFFFFF, ((guint64)(value)) >> 32)
static void
fire_watch (MetaIdleMonitorWatch *watch)
{
MetaIdleMonitor *monitor;
guint id;
gboolean is_user_active_watch;
monitor = watch->monitor;
g_object_ref (monitor);
if (watch->idle_source_id)
{
g_source_remove (watch->idle_source_id);
watch->idle_source_id = 0;
}
id = watch->id;
is_user_active_watch = (watch->timeout_msec == 0);
if (watch->callback)
watch->callback (monitor, id, watch->user_data);
if (is_user_active_watch)
meta_idle_monitor_remove_watch (monitor, id);
g_object_unref (monitor);
}
static XSyncAlarm
_xsync_alarm_set (MetaIdleMonitor *monitor,
XSyncTestType test_type,
guint64 interval,
gboolean want_events)
{
XSyncAlarmAttributes attr;
XSyncValue delta;
guint flags;
flags = XSyncCACounter | XSyncCAValueType | XSyncCATestType |
XSyncCAValue | XSyncCADelta | XSyncCAEvents;
XSyncIntToValue (&delta, 0);
attr.trigger.counter = monitor->counter;
attr.trigger.value_type = XSyncAbsolute;
attr.delta = delta;
attr.events = want_events;
GUINT64_TO_XSYNCVALUE (interval, &attr.trigger.wait_value);
attr.trigger.test_type = test_type;
return XSyncCreateAlarm (monitor->display, flags, &attr);
}
static void
ensure_alarm_rescheduled (Display *dpy,
XSyncAlarm alarm)
{
XSyncAlarmAttributes attr;
/* Some versions of Xorg have an issue where alarms aren't
* always rescheduled. Calling XSyncChangeAlarm, even
* without any attributes, will reschedule the alarm. */
XSyncChangeAlarm (dpy, alarm, 0, &attr);
}
static void
set_alarm_enabled (Display *dpy,
XSyncAlarm alarm,
gboolean enabled)
{
XSyncAlarmAttributes attr;
attr.events = enabled;
XSyncChangeAlarm (dpy, alarm, XSyncCAEvents, &attr);
}
static void
check_x11_watch (gpointer data,
gpointer user_data)
{
MetaIdleMonitorWatch *watch = data;
XSyncAlarm alarm = (XSyncAlarm) user_data;
if (watch->xalarm != alarm)
return;
fire_watch (watch);
}
static void
meta_idle_monitor_handle_xevent (MetaIdleMonitor *monitor,
XSyncAlarmNotifyEvent *alarm_event)
{
XSyncAlarm alarm;
GList *watches;
gboolean has_alarm;
if (alarm_event->state != XSyncAlarmActive)
return;
alarm = alarm_event->alarm;
has_alarm = FALSE;
if (alarm == monitor->user_active_alarm)
{
set_alarm_enabled (monitor->display,
alarm,
FALSE);
has_alarm = TRUE;
}
else if (g_hash_table_contains (monitor->alarms, (gpointer) alarm))
{
ensure_alarm_rescheduled (monitor->display,
alarm);
has_alarm = TRUE;
}
if (has_alarm)
{
watches = g_hash_table_get_values (monitor->watches);
g_list_foreach (watches, check_x11_watch, (gpointer) alarm);
g_list_free (watches);
}
}
void
meta_idle_monitor_handle_xevent_all (XEvent *xevent)
{
int i;
for (i = 0; i <= device_id_max; i++)
if (device_monitors[i])
meta_idle_monitor_handle_xevent (device_monitors[i], (XSyncAlarmNotifyEvent*)xevent);
}
static char *
counter_name_for_device (int device_id)
{
if (device_id > 0)
return g_strdup_printf ("DEVICEIDLETIME %d", device_id);
return g_strdup ("IDLETIME");
}
static XSyncCounter
find_idletime_counter (MetaIdleMonitor *monitor)
{
int i;
int ncounters;
XSyncSystemCounter *counters;
XSyncCounter counter = None;
char *counter_name;
counter_name = counter_name_for_device (monitor->device_id);
counters = XSyncListSystemCounters (monitor->display, &ncounters);
for (i = 0; i < ncounters; i++)
{
if (counters[i].name != NULL && strcmp (counters[i].name, counter_name) == 0)
{
counter = counters[i].counter;
break;
}
}
XSyncFreeSystemCounterList (counters);
g_free (counter_name);
return counter;
}
static guint32
get_next_watch_serial (void)
{
static guint32 serial = 0;
g_atomic_int_inc (&serial);
return serial;
}
static void
idle_monitor_watch_free (MetaIdleMonitorWatch *watch)
{
MetaIdleMonitor *monitor;
if (watch == NULL)
return;
monitor = watch->monitor;
g_object_ref (monitor);
if (watch->idle_source_id)
{
g_source_remove (watch->idle_source_id);
watch->idle_source_id = 0;
}
if (watch->notify != NULL)
watch->notify (watch->user_data);
if (watch->xalarm != monitor->user_active_alarm &&
watch->xalarm != None)
{
XSyncDestroyAlarm (monitor->display, watch->xalarm);
g_hash_table_remove (monitor->alarms, (gpointer) watch->xalarm);
}
if (watch->timeout_source != NULL)
g_source_destroy (watch->timeout_source);
g_object_unref (monitor);
g_slice_free (MetaIdleMonitorWatch, watch);
}
static void
init_xsync (MetaIdleMonitor *monitor)
{
monitor->counter = find_idletime_counter (monitor);
/* IDLETIME counter not found? */
if (monitor->counter == None)
{
meta_warning ("IDLETIME counter not found\n");
return;
}
monitor->user_active_alarm = _xsync_alarm_set (monitor, XSyncNegativeTransition, 1, FALSE);
}
static void
meta_idle_monitor_dispose (GObject *object)
{
MetaIdleMonitor *monitor;
monitor = META_IDLE_MONITOR (object);
g_clear_pointer (&monitor->watches, g_hash_table_destroy);
g_clear_pointer (&monitor->alarms, g_hash_table_destroy);
if (monitor->user_active_alarm != None)
{
XSyncDestroyAlarm (monitor->display, monitor->user_active_alarm);
monitor->user_active_alarm = None;
}
G_OBJECT_CLASS (meta_idle_monitor_parent_class)->dispose (object);
}
static void
meta_idle_monitor_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaIdleMonitor *monitor = META_IDLE_MONITOR (object);
switch (prop_id)
{
case PROP_DEVICE_ID:
g_value_set_int (value, monitor->device_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_idle_monitor_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaIdleMonitor *monitor = META_IDLE_MONITOR (object);
switch (prop_id)
{
case PROP_DEVICE_ID:
monitor->device_id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_idle_monitor_constructed (GObject *object)
{
MetaIdleMonitor *monitor = META_IDLE_MONITOR (object);
if (!meta_is_wayland_compositor ())
{
monitor->display = meta_get_display ()->xdisplay;
init_xsync (monitor);
}
}
static void
meta_idle_monitor_class_init (MetaIdleMonitorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = meta_idle_monitor_dispose;
object_class->constructed = meta_idle_monitor_constructed;
object_class->get_property = meta_idle_monitor_get_property;
object_class->set_property = meta_idle_monitor_set_property;
/**
* MetaIdleMonitor:device_id:
*
* The device to listen to idletime on.
*/
obj_props[PROP_DEVICE_ID] =
g_param_spec_int ("device-id",
"Device ID",
"The device to listen to idletime on",
0, 255, 0,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class, PROP_DEVICE_ID, obj_props[PROP_DEVICE_ID]);
}
static void
meta_idle_monitor_init (MetaIdleMonitor *monitor)
{
monitor->watches = g_hash_table_new_full (NULL,
NULL,
NULL,
(GDestroyNotify)idle_monitor_watch_free);
monitor->alarms = g_hash_table_new (NULL, NULL);
}
static void
ensure_device_monitor (int device_id)
{
if (device_monitors[device_id])
return;
device_monitors[device_id] = g_object_new (META_TYPE_IDLE_MONITOR, "device-id", device_id, NULL);
device_id_max = MAX (device_id_max, device_id);
}
/**
* meta_idle_monitor_get_core:
*
* Returns: (transfer none): the #MetaIdleMonitor that tracks the server-global
* idletime for all devices. To track device-specific idletime,
* use meta_idle_monitor_get_for_device().
*/
MetaIdleMonitor *
meta_idle_monitor_get_core (void)
{
ensure_device_monitor (0);
return device_monitors[0];
}
/**
* meta_idle_monitor_get_for_device:
* @device_id: the device to get the idle time for.
*
* Returns: (transfer none): a new #MetaIdleMonitor that tracks the
* device-specific idletime for @device. To track server-global idletime
* for all devices, use meta_idle_monitor_get_core().
*/
MetaIdleMonitor *
meta_idle_monitor_get_for_device (int device_id)
{
g_return_val_if_fail (device_id > 0 && device_id < 256, NULL);
ensure_device_monitor (device_id);
return device_monitors[device_id];
}
static gboolean
wayland_dispatch_timeout (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
MetaIdleMonitorWatch *watch = user_data;
fire_watch (watch);
g_source_set_ready_time (watch->timeout_source, -1);
return TRUE;
}
static GSourceFuncs wayland_source_funcs = {
NULL, /* prepare */
NULL, /* check */
wayland_dispatch_timeout,
NULL, /* finalize */
};
static gboolean
fire_watch_idle (gpointer data)
{
MetaIdleMonitorWatch *watch = data;
watch->idle_source_id = 0;
fire_watch (watch);
return FALSE;
}
static MetaIdleMonitorWatch *
make_watch (MetaIdleMonitor *monitor,
guint64 timeout_msec,
MetaIdleMonitorWatchFunc callback,
gpointer user_data,
GDestroyNotify notify)
{
MetaIdleMonitorWatch *watch;
watch = g_slice_new0 (MetaIdleMonitorWatch);
watch->monitor = monitor;
watch->id = get_next_watch_serial ();
watch->callback = callback;
watch->user_data = user_data;
watch->notify = notify;
watch->timeout_msec = timeout_msec;
if (meta_is_wayland_compositor ())
{
if (timeout_msec != 0)
{
GSource *source = g_source_new (&wayland_source_funcs, sizeof (GSource));
g_source_set_callback (source, NULL, watch, NULL);
g_source_set_ready_time (source, monitor->last_event_time + timeout_msec * 1000);
g_source_attach (source, NULL);
g_source_unref (source);
watch->timeout_source = source;
}
}
else
{
if (timeout_msec != 0)
{
watch->xalarm = _xsync_alarm_set (monitor, XSyncPositiveTransition, timeout_msec, TRUE);
g_hash_table_add (monitor->alarms, (gpointer) watch->xalarm);
if (meta_idle_monitor_get_idletime (monitor) > (gint64)timeout_msec)
watch->idle_source_id = g_idle_add (fire_watch_idle, watch);
}
else
{
watch->xalarm = monitor->user_active_alarm;
set_alarm_enabled (monitor->display, monitor->user_active_alarm, TRUE);
}
}
g_hash_table_insert (monitor->watches,
GUINT_TO_POINTER (watch->id),
watch);
return watch;
}
/**
* meta_idle_monitor_add_idle_watch:
* @monitor: A #MetaIdleMonitor
* @interval_msec: The idletime interval, in milliseconds
* @callback: (allow-none): The callback to call when the user has
* accumulated @interval_msec milliseconds of idle time.
* @user_data: (allow-none): The user data to pass to the callback
* @notify: A #GDestroyNotify
*
* Returns: a watch id
*
* Adds a watch for a specific idle time. The callback will be called
* when the user has accumulated @interval_msec milliseconds of idle time.
* This function will return an ID that can either be passed to
* meta_idle_monitor_remove_watch(), or can be used to tell idle time
* watches apart if you have more than one.
*
* Also note that this function will only care about positive transitions
* (user's idle time exceeding a certain time). If you want to know about
* when the user has become active, use
* meta_idle_monitor_add_user_active_watch().
*/
guint
meta_idle_monitor_add_idle_watch (MetaIdleMonitor *monitor,
guint64 interval_msec,
MetaIdleMonitorWatchFunc callback,
gpointer user_data,
GDestroyNotify notify)
{
MetaIdleMonitorWatch *watch;
g_return_val_if_fail (META_IS_IDLE_MONITOR (monitor), 0);
g_return_val_if_fail (interval_msec > 0, 0);
watch = make_watch (monitor,
interval_msec,
callback,
user_data,
notify);
return watch->id;
}
/**
* meta_idle_monitor_add_user_active_watch:
* @monitor: A #MetaIdleMonitor
* @callback: (allow-none): The callback to call when the user is
* active again.
* @user_data: (allow-none): The user data to pass to the callback
* @notify: A #GDestroyNotify
*
* Returns: a watch id
*
* Add a one-time watch to know when the user is active again.
* Note that this watch is one-time and will de-activate after the
* function is called, for efficiency purposes. It's most convenient
* to call this when an idle watch, as added by
* meta_idle_monitor_add_idle_watch(), has triggered.
*/
guint
meta_idle_monitor_add_user_active_watch (MetaIdleMonitor *monitor,
MetaIdleMonitorWatchFunc callback,
gpointer user_data,
GDestroyNotify notify)
{
MetaIdleMonitorWatch *watch;
g_return_val_if_fail (META_IS_IDLE_MONITOR (monitor), 0);
watch = make_watch (monitor,
0,
callback,
user_data,
notify);
return watch->id;
}
/**
* meta_idle_monitor_remove_watch:
* @monitor: A #MetaIdleMonitor
* @id: A watch ID
*
* Removes an idle time watcher, previously added by
* meta_idle_monitor_add_idle_watch() or
* meta_idle_monitor_add_user_active_watch().
*/
void
meta_idle_monitor_remove_watch (MetaIdleMonitor *monitor,
guint id)
{
g_return_if_fail (META_IS_IDLE_MONITOR (monitor));
g_hash_table_remove (monitor->watches,
GUINT_TO_POINTER (id));
}
/**
* meta_idle_monitor_get_idletime:
* @monitor: A #MetaIdleMonitor
*
* Returns: The current idle time, in milliseconds, or -1 for not supported
*/
gint64
meta_idle_monitor_get_idletime (MetaIdleMonitor *monitor)
{
XSyncValue value;
if (meta_is_wayland_compositor ())
{
return (g_get_monotonic_time () - monitor->last_event_time) / 1000;
}
else
{
if (!XSyncQueryCounter (monitor->display, monitor->counter, &value))
return -1;
return _xsyncvalue_to_int64 (value);
}
}
typedef struct {
MetaIdleMonitor *monitor;
GList *fired_watches;
} CheckWaylandClosure;
static gboolean
check_wayland_watch (gpointer key,
gpointer value,
gpointer user_data)
{
MetaIdleMonitorWatch *watch = value;
CheckWaylandClosure *closure = user_data;
gboolean steal;
if (watch->timeout_msec == 0)
{
closure->fired_watches = g_list_prepend (closure->fired_watches, watch);
steal = TRUE;
}
else
{
g_source_set_ready_time (watch->timeout_source,
closure->monitor->last_event_time +
watch->timeout_msec * 1000);
steal = FALSE;
}
return steal;
}
static void
fire_wayland_watch (gpointer watch,
gpointer data)
{
fire_watch (watch);
}
void
meta_idle_monitor_reset_idletime (MetaIdleMonitor *monitor)
{
CheckWaylandClosure closure;
monitor->last_event_time = g_get_monotonic_time ();
closure.monitor = monitor;
closure.fired_watches = NULL;
g_hash_table_foreach_steal (monitor->watches, check_wayland_watch, &closure);
g_list_foreach (closure.fired_watches, fire_wayland_watch, NULL);
g_list_free (closure.fired_watches);
}
static gboolean
handle_get_idletime (MetaDBusIdleMonitor *skeleton,
GDBusMethodInvocation *invocation,
MetaIdleMonitor *monitor)
{
guint64 idletime;
idletime = meta_idle_monitor_get_idletime (monitor);
meta_dbus_idle_monitor_complete_get_idletime (skeleton, invocation, idletime);
return TRUE;
}
typedef struct {
MetaDBusIdleMonitor *dbus_monitor;
MetaIdleMonitor *monitor;
char *dbus_name;
guint watch_id;
guint name_watcher_id;
} DBusWatch;
static void
destroy_dbus_watch (gpointer data)
{
DBusWatch *watch = data;
g_object_unref (watch->dbus_monitor);
g_object_unref (watch->monitor);
g_free (watch->dbus_name);
g_bus_unwatch_name (watch->name_watcher_id);
g_slice_free (DBusWatch, watch);
}
static void
dbus_idle_callback (MetaIdleMonitor *monitor,
guint watch_id,
gpointer user_data)
{
DBusWatch *watch = user_data;
GDBusInterfaceSkeleton *skeleton = G_DBUS_INTERFACE_SKELETON (watch->dbus_monitor);
g_dbus_connection_emit_signal (g_dbus_interface_skeleton_get_connection (skeleton),
watch->dbus_name,
g_dbus_interface_skeleton_get_object_path (skeleton),
"org.gnome.Mutter.IdleMonitor",
"WatchFired",
g_variant_new ("(u)", watch_id),
NULL);
}
static void
name_vanished_callback (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
DBusWatch *watch = user_data;
meta_idle_monitor_remove_watch (watch->monitor, watch->watch_id);
}
static DBusWatch *
make_dbus_watch (MetaDBusIdleMonitor *skeleton,
GDBusMethodInvocation *invocation,
MetaIdleMonitor *monitor)
{
DBusWatch *watch;
watch = g_slice_new (DBusWatch);
watch->dbus_monitor = g_object_ref (skeleton);
watch->monitor = g_object_ref (monitor);
watch->dbus_name = g_strdup (g_dbus_method_invocation_get_sender (invocation));
watch->name_watcher_id = g_bus_watch_name_on_connection (g_dbus_method_invocation_get_connection (invocation),
watch->dbus_name,
G_BUS_NAME_WATCHER_FLAGS_NONE,
NULL, /* appeared */
name_vanished_callback,
watch, NULL);
return watch;
}
static gboolean
handle_add_idle_watch (MetaDBusIdleMonitor *skeleton,
GDBusMethodInvocation *invocation,
guint64 interval,
MetaIdleMonitor *monitor)
{
DBusWatch *watch;
watch = make_dbus_watch (skeleton, invocation, monitor);
watch->watch_id = meta_idle_monitor_add_idle_watch (monitor, interval,
dbus_idle_callback, watch, destroy_dbus_watch);
meta_dbus_idle_monitor_complete_add_idle_watch (skeleton, invocation, watch->watch_id);
return TRUE;
}
static gboolean
handle_add_user_active_watch (MetaDBusIdleMonitor *skeleton,
GDBusMethodInvocation *invocation,
MetaIdleMonitor *monitor)
{
DBusWatch *watch;
watch = make_dbus_watch (skeleton, invocation, monitor);
watch->watch_id = meta_idle_monitor_add_user_active_watch (monitor,
dbus_idle_callback, watch,
destroy_dbus_watch);
meta_dbus_idle_monitor_complete_add_user_active_watch (skeleton, invocation, watch->watch_id);
return TRUE;
}
static gboolean
handle_remove_watch (MetaDBusIdleMonitor *skeleton,
GDBusMethodInvocation *invocation,
guint id,
MetaIdleMonitor *monitor)
{
meta_idle_monitor_remove_watch (monitor, id);
meta_dbus_idle_monitor_complete_remove_watch (skeleton, invocation);
return TRUE;
}
static void
create_monitor_skeleton (GDBusObjectManagerServer *manager,
MetaIdleMonitor *monitor,
const char *path)
{
MetaDBusIdleMonitor *skeleton;
MetaDBusObjectSkeleton *object;
skeleton = meta_dbus_idle_monitor_skeleton_new ();
g_signal_connect_object (skeleton, "handle-add-idle-watch",
G_CALLBACK (handle_add_idle_watch), monitor, 0);
g_signal_connect_object (skeleton, "handle-add-user-active-watch",
G_CALLBACK (handle_add_user_active_watch), monitor, 0);
g_signal_connect_object (skeleton, "handle-remove-watch",
G_CALLBACK (handle_remove_watch), monitor, 0);
g_signal_connect_object (skeleton, "handle-get-idletime",
G_CALLBACK (handle_get_idletime), monitor, 0);
object = meta_dbus_object_skeleton_new (path);
meta_dbus_object_skeleton_set_idle_monitor (object, skeleton);
g_dbus_object_manager_server_export (manager, G_DBUS_OBJECT_SKELETON (object));
}
static void
on_device_added (ClutterDeviceManager *device_manager,
ClutterInputDevice *device,
GDBusObjectManagerServer *manager)
{
MetaIdleMonitor *monitor;
int device_id;
char *path;
device_id = clutter_input_device_get_device_id (device);
monitor = meta_idle_monitor_get_for_device (device_id);
path = g_strdup_printf ("/org/gnome/Mutter/IdleMonitor/Device%d", device_id);
create_monitor_skeleton (manager, monitor, path);
g_free (path);
}
static void
on_device_removed (ClutterDeviceManager *device_manager,
ClutterInputDevice *device,
GDBusObjectManagerServer *manager)
{
int device_id;
char *path;
device_id = clutter_input_device_get_device_id (device);
path = g_strdup_printf ("/org/gnome/Mutter/IdleMonitor/Device%d", device_id);
g_dbus_object_manager_server_unexport (manager, path);
g_free (path);
g_clear_object (&device_monitors[device_id]);
if (device_id == device_id_max)
device_id_max--;
}
static void
on_bus_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
GDBusObjectManagerServer *manager;
ClutterDeviceManager *device_manager;
MetaIdleMonitor *monitor;
GSList *devices, *iter;
char *path;
manager = g_dbus_object_manager_server_new ("/org/gnome/Mutter/IdleMonitor");
/* We never clear the core monitor, as that's supposed to cumulate idle times from
all devices */
monitor = meta_idle_monitor_get_core ();
path = g_strdup ("/org/gnome/Mutter/IdleMonitor/Core");
create_monitor_skeleton (manager, monitor, path);
g_free (path);
device_manager = clutter_device_manager_get_default ();
devices = clutter_device_manager_list_devices (device_manager);
for (iter = devices; iter; iter = iter->next)
on_device_added (device_manager, iter->data, manager);
g_signal_connect_object (device_manager, "device-added",
G_CALLBACK (on_device_added), manager, 0);
g_signal_connect_object (device_manager, "device-removed",
G_CALLBACK (on_device_removed), manager, 0);
g_dbus_object_manager_server_set_connection (manager, connection);
}
static void
on_name_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
meta_verbose ("Acquired name %s\n", name);
}
static void
on_name_lost (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
meta_verbose ("Lost or failed to acquire name %s\n", name);
}
void
meta_idle_monitor_init_dbus (void)
{
static int dbus_name_id;
if (dbus_name_id > 0)
return;
dbus_name_id = g_bus_own_name (G_BUS_TYPE_SESSION,
"org.gnome.Mutter.IdleMonitor",
G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT |
(meta_get_replace_current_wm () ?
G_BUS_NAME_OWNER_FLAGS_REPLACE : 0),
on_bus_acquired,
on_name_acquired,
on_name_lost,
NULL, NULL);
}
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