Commit 4221835f authored by Peter Wu's avatar Peter Wu Committed by Richard Hughes

daemon: properly disconnect signals, stop memleak

Whenever the daemon is polling on a device, a new signal is connected to
the object. This signal was not disconnected when polling stops which
resulted in a memory leak. Furthermore, whenever the "warning-level"
property is updated, the signal would result in an exponentially raising
call count (this happens when the battery percentage changes for
example). 's avatarAlexander Jesner <>
Signed-off-by: Peter Wu's avatarPeter Wu <>
parent 1f9c0941
......@@ -69,6 +69,7 @@ struct UpDaemonPrivate
UpDeviceList *power_devices;
guint action_timeout_id;
GHashTable *poll_timeouts;
GHashTable *idle_signals;
/* Properties */
gboolean on_battery;
......@@ -952,6 +953,7 @@ up_daemon_start_poll (GObject *object,
UpDevice *device;
TimeoutData *data;
guint timeout;
ulong handler_id;
char *name;
device = UP_DEVICE (object);
......@@ -969,8 +971,10 @@ up_daemon_start_poll (GObject *object,
timeout = calculate_timeout (device);
data->timeout = timeout;
g_signal_connect (device, "notify::warning-level",
G_CALLBACK (change_idle_timeout), NULL);
handler_id = g_signal_connect (device, "notify::warning-level",
G_CALLBACK (change_idle_timeout), NULL);
g_hash_table_insert (daemon->priv->idle_signals, device,
GUINT_TO_POINTER (handler_id));
g_object_weak_ref (object, device_destroyed, daemon);
data->id = g_timeout_add_seconds (timeout, fire_timeout_callback, device);
......@@ -991,10 +995,20 @@ up_daemon_stop_poll (GObject *object)
UpDevice *device;
TimeoutData *data;
UpDaemon *daemon;
gpointer value;
gulong handle_id;
device = UP_DEVICE (object);
daemon = up_device_get_daemon (device);
value = g_hash_table_lookup (daemon->priv->idle_signals, device);
if (value != NULL) {
handle_id = GPOINTER_TO_UINT (value);
if (g_signal_handler_is_connected (device, handle_id))
g_signal_handler_disconnect (device, handle_id);
g_hash_table_remove (daemon->priv->idle_signals, device);
data = g_hash_table_lookup (daemon->priv->poll_timeouts, device);
if (data == NULL)
......@@ -1137,6 +1151,7 @@ up_daemon_init (UpDaemon *daemon)
daemon->priv->poll_timeouts = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, g_free);
daemon->priv->idle_signals = g_hash_table_new (g_direct_hash, g_direct_equal);
......@@ -1281,6 +1296,7 @@ up_daemon_finalize (GObject *object)
g_source_remove (priv->props_idle_id);
g_clear_pointer (&priv->poll_timeouts, g_hash_table_destroy);
g_clear_pointer (&priv->idle_signals, g_hash_table_destroy);
g_clear_pointer (&daemon->priv->changed_props, g_hash_table_unref);
if (priv->proxy != NULL)
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