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x11: trap errors when calling XIQueryDevice

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Devices can disappear at any time, causing XIQueryDevice
to throw an error. At the same time, plug a memory leak.

https://bugzilla.gnome.org/show_bug.cgi?id=701974
This commit is contained in:
Matthias Clasen 2013-06-10 21:41:24 -04:00
parent da6abc6fc9
commit d343cc6289
1 changed files with 21 additions and 7 deletions
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14
clutter/x11/clutter-device-manager-xi2.c
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@ -408,10 +408,16 @@ translate_hierarchy_event (ClutterBackendX11 *backend_x11,
CLUTTER_NOTE (EVENT, "Hierarchy event: device enabled");
clutter_x11_trap_x_errors ();
info = XIQueryDevice (backend_x11->xdpy,
ev->info[i].deviceid,
&n_devices);
clutter_x11_untrap_x_errors ();
if (info != NULL)
{
add_device (manager_xi2, backend_x11, &info[0], FALSE);
XIFreeDeviceInfo (info);
}
}
else if (ev->info[i].flags & XIDeviceDisabled)
{
@ -448,17 +454,25 @@ translate_hierarchy_event (ClutterBackendX11 *backend_x11,
/* and attach the slave to the new master if needed */
if (ev->info[i].flags & XISlaveAttached)
{
clutter_x11_trap_x_errors ();
info = XIQueryDevice (backend_x11->xdpy,
ev->info[i].deviceid,
&n_devices);
clutter_x11_untrap_x_errors ();
if (info != NULL)
{
master = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (info->attachment));
if (master != NULL)
{
_clutter_input_device_set_associated_device (slave, master);
_clutter_input_device_add_slave (master, slave);
send_changed = TRUE;
}
XIFreeDeviceInfo (info);
}
}
if (send_changed)
{