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MetaSurfaceActorWayland: Unset the MetaWaylandSurface pointer when it goes away

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We may access it during painting even if it has been freed. For now,
manually unset it during the MetaWaylandSurface cleanup; in the future
make MetaWaylandSurface a GObject and make the surface pointer a weak
reference.

https://bugzilla.gnome.org/show_bug.cgi?id=744453
This commit is contained in:
Jonas Ådahl 2015-07-03 12:27:41 +08:00
parent dc99af40f3
commit ba7c524a18
4 changed files with 20 additions and 2 deletions
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12
src/compositor/meta-surface-actor-wayland.c
View File

@ -110,6 +110,9 @@ meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor)
MetaWindow *window = surface->window;
int output_scale = 1;
if (!priv->surface)
return 1;
while (surface)
{
if (surface->window)
@ -301,3 +304,12 @@ meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self)
MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
return priv->surface;
}
void
meta_surface_actor_wayland_surface_destroyed (MetaSurfaceActorWayland *self)
{
MetaSurfaceActorWaylandPrivate *priv =
meta_surface_actor_wayland_get_instance_private (self);
priv->surface = NULL;
}

1
src/compositor/meta-surface-actor-wayland.h
View File

@ -57,6 +57,7 @@ GType meta_surface_actor_wayland_get_type (void);
MetaSurfaceActor * meta_surface_actor_wayland_new (MetaWaylandSurface *surface);
MetaWaylandSurface * meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self);
void meta_surface_actor_wayland_surface_destroyed (MetaSurfaceActorWayland *self);
void meta_surface_actor_wayland_set_texture (MetaSurfaceActorWayland *self,
CoglTexture *texture);

6
src/compositor/meta-window-actor.c
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@ -616,8 +616,10 @@ meta_window_actor_get_shape_bounds (MetaWindowActor *self,
#ifdef HAVE_WAYLAND
if (META_IS_SURFACE_ACTOR_WAYLAND (priv->surface))
{
double scale = priv->surface ?
meta_surface_actor_wayland_get_scale (META_SURFACE_ACTOR_WAYLAND (priv->surface)) : 1.;
MetaSurfaceActorWayland *surface_actor =
META_SURFACE_ACTOR_WAYLAND (priv->surface);
double scale = meta_surface_actor_wayland_get_scale (surface_actor);
bounds->x *= scale;
bounds->y *= scale;
bounds->width *= scale;

3
src/wayland/meta-wayland-surface.c
View File

@ -802,6 +802,9 @@ wl_surface_destructor (struct wl_resource *resource)
if (surface->input_region)
cairo_region_destroy (surface->input_region);
meta_surface_actor_wayland_surface_destroyed (
META_SURFACE_ACTOR_WAYLAND (surface->surface_actor));
g_object_unref (surface->surface_actor);
meta_wayland_compositor_destroy_frame_callbacks (compositor, surface);