kms/update: Add destroy-notify to result listener user data

No thread guarantees, users need to handle it themselves.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2777>

src/backends/native/meta-cursor-renderer-native.c

@@ -367,7 +367,8 @@ assign_cursor_plane (MetaCursorRendererNative *native,
   meta_kms_update_add_result_listener (kms_update,
                                        &kms_update_listener_vtable,
                                        NULL,
-                                       native);
+                                       native,
+                                       NULL);
 
   crtc_cursor_data->buffer = buffer;
 

src/backends/native/meta-kms-update-private.h

@@ -131,6 +131,7 @@ struct _MetaKmsResultListener
   GMainContext *main_context;
   const MetaKmsResultListenerVtable *vtable;
   gpointer user_data;
+  GDestroyNotify destroy_notify;
 
   MetaKmsFeedback *feedback;
 };

src/backends/native/meta-kms-update.c

@@ -624,7 +624,8 @@ void
 meta_kms_update_add_result_listener (MetaKmsUpdate                     *update,
                                      const MetaKmsResultListenerVtable *vtable,
                                      GMainContext                      *main_context,
-                                     gpointer                           user_data)
+                                     gpointer                           user_data,
+                                     GDestroyNotify                     destroy_notify)
 {
   MetaKmsResultListener *listener;
 
@@ -633,6 +634,7 @@ meta_kms_update_add_result_listener (MetaKmsUpdate                     *update,
     .main_context = main_context,
     .vtable = vtable,
     .user_data = user_data,
+    .destroy_notify = destroy_notify,
   };
 
   update->result_listeners = g_list_append (update->result_listeners,
@@ -672,6 +674,8 @@ meta_kms_result_listener_notify (MetaKmsResultListener *listener)
 void
 meta_kms_result_listener_free (MetaKmsResultListener *listener)
 {
+  if (listener->destroy_notify)
+    listener->destroy_notify (listener->user_data);
   g_clear_pointer (&listener->feedback, meta_kms_feedback_unref);
   g_free (listener);
 }

src/backends/native/meta-kms-update.h

@@ -197,7 +197,8 @@ META_EXPORT_TEST
 void meta_kms_update_add_result_listener (MetaKmsUpdate                     *update,
                                           const MetaKmsResultListenerVtable *vtable,
                                           GMainContext                      *main_context,
-                                          gpointer                           user_data);
+                                          gpointer                           user_data,
+                                          GDestroyNotify                     destroy_notify);
 
 META_EXPORT_TEST
 void meta_kms_update_merge_from (MetaKmsUpdate *update,

src/backends/native/meta-onscreen-native.c

@@ -1170,7 +1170,8 @@ meta_onscreen_native_swap_buffers_with_damage (CoglOnscreen  *onscreen,
       meta_kms_update_add_result_listener (kms_update,
                                            &swap_buffer_result_listener_vtable,
                                            NULL,
-                                           onscreen_native);
+                                           onscreen_native,
+                                           NULL);
 
       ensure_crtc_modes (onscreen, kms_update);
       meta_onscreen_native_flip_crtc (onscreen,
@@ -1391,7 +1392,8 @@ meta_onscreen_native_direct_scanout (CoglOnscreen   *onscreen,
   meta_kms_update_add_result_listener (kms_update,
                                        &scanout_result_listener_vtable,
                                        NULL,
-                                       onscreen_native);
+                                       onscreen_native,
+                                       NULL);
 
   meta_onscreen_native_flip_crtc (onscreen,
                                   onscreen_native->view,
@@ -1570,7 +1572,8 @@ meta_onscreen_native_finish_frame (CoglOnscreen *onscreen,
   meta_kms_update_add_result_listener (kms_update,
                                        &finish_frame_result_listener_vtable,
                                        NULL,
-                                       onscreen_native);
+                                       onscreen_native,
+                                       NULL);
 
   meta_kms_update_add_page_flip_listener (kms_update,
                                           kms_crtc,

src/backends/native/meta-renderer-native.c

@@ -876,6 +876,7 @@ post_mode_set_updates (MetaRendererNative *renderer_native)
       meta_kms_update_add_result_listener (kms_update,
                                            &mode_sets_result_listener_vtable,
                                            NULL,
+                                           NULL,
                                            NULL);
 
       feedback =

src/tests/native-kms-render.c

@@ -382,7 +382,8 @@ on_scanout_fallback_before_paint (ClutterStage     *stage,
   meta_kms_update_add_result_listener (kms_update,
                                        &scanout_fallback_result_listener_vtable,
                                        NULL,
-                                       test);
+                                       test,
+                                       NULL);
 
   test->scanout_fallback.scanout_failed_view = stage_view;
 }

src/tests/native-kms-updates.c

@@ -830,11 +830,13 @@ meta_test_kms_update_feedback (void)
   meta_kms_update_add_result_listener (update,
                                        &main_thread_result_listener_vtable,
                                        NULL,
-                                       &data);
+                                       &data,
+                                       NULL);
   meta_kms_update_add_result_listener (update,
                                        &callback_thread_result_listener_vtable,
                                        data.thread_main_context,
-                                       &data);
+                                       &data,
+                                       NULL);
 
   meta_kms_device_post_update (device, update,
                                META_KMS_UPDATE_FLAG_NONE);