backends: Add logical monitor -> monitor -> output -> crtc ref chainwip/monitor-crtc-private-struct

Make it so that each logical monitor has a reference to all the
monitors that are assigned to it.

All monitors has a reference to each output that belongs to it.

Each output has a reference to any CRTC it has been assigned.

https://bugzilla.gnome.org/show_bug.cgi?id=786929

1 files changed, 9 insertions, 5 deletions

diff --git a/src/backends/meta-logical-monitor.c b/src/backends/meta-logical-monitor.c
index 9e14d660d..bc91d1d06 100644
--- a/src/backends/meta-logical-monitor.c
+++ b/src/backends/meta-logical-monitor.c
@@ -144,7 +144,7 @@ meta_logical_monitor_add_monitor (MetaLogicalMonitor *logical_monitor,
 
   is_presentation = logical_monitor->is_presentation;
   logical_monitor->monitors = g_list_append (logical_monitor->monitors,
-                                             monitor);
+                                             g_object_ref (monitor));
 
   for (l = logical_monitor->monitors; l; l = l->next)
     {
@@ -255,13 +255,17 @@ meta_logical_monitor_init (MetaLogicalMonitor *logical_monitor)
 }
 
 static void
-meta_logical_monitor_finalize (GObject *object)
+meta_logical_monitor_dispose (GObject *object)
 {
   MetaLogicalMonitor *logical_monitor = META_LOGICAL_MONITOR (object);
 
-  g_list_free (logical_monitor->monitors);
+  if (logical_monitor->monitors)
+    {
+      g_list_free_full (logical_monitor->monitors, g_object_unref);
+      logical_monitor->monitors = NULL;
+    }
 
-  G_OBJECT_CLASS (meta_logical_monitor_parent_class)->finalize (object);
+  G_OBJECT_CLASS (meta_logical_monitor_parent_class)->dispose (object);
 }
 
 static void
@@ -269,7 +273,7 @@ meta_logical_monitor_class_init (MetaLogicalMonitorClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
-  object_class->finalize = meta_logical_monitor_finalize;
+  object_class->dispose = meta_logical_monitor_dispose;
 }
 
 gboolean