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wayland/cursor-role: Increase buffer use count on construction

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We may be assigned multiple times, if the surface is assigned to be a
cursor surface multiple times. Each time e.g. wl_pointer.set_cursor is
called, we'll be assigned.

While the role object exists, we'll handle buffer use count even when
we are not actively assigned, thus we should only handle the initial
assignment use count bump when constructing, so that we don't increase
it when reassigned, where the wl_resource may already have been
released.

https://bugzilla.gnome.org/show_bug.cgi?id=770402
This commit is contained in:
Jonas Ådahl 2016-08-25 17:38:45 +08:00
parent f692c527e7
commit c7976e0dbc
1 changed files with 23 additions and 11 deletions
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34
src/wayland/meta-wayland-surface-role-cursor.c
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@ -113,19 +113,8 @@ cursor_sprite_prepare_at (MetaCursorSprite *cursor_sprite,
static void
cursor_surface_role_assigned (MetaWaylandSurfaceRole *surface_role)
{
MetaWaylandSurfaceRoleCursor *cursor_role =
META_WAYLAND_SURFACE_ROLE_CURSOR (surface_role);
MetaWaylandSurfaceRoleCursorPrivate *priv =
meta_wayland_surface_role_cursor_get_instance_private (cursor_role);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (surface_role);
MetaWaylandBuffer *buffer = meta_wayland_surface_get_buffer (surface);
if (buffer)
{
g_set_object (&priv->buffer, buffer);
meta_wayland_surface_ref_buffer_use_count (surface);
}
wl_list_insert_list (&priv->frame_callbacks,
&surface->pending_frame_callback_list);
@ -223,6 +212,28 @@ cursor_surface_role_dispose (GObject *object)
G_OBJECT_CLASS (meta_wayland_surface_role_cursor_parent_class)->dispose (object);
}
static void
cursor_surface_role_constructed (GObject *object)
{
MetaWaylandSurfaceRoleCursor *cursor_role =
META_WAYLAND_SURFACE_ROLE_CURSOR (object);
MetaWaylandSurfaceRoleCursorPrivate *priv =
meta_wayland_surface_role_cursor_get_instance_private (cursor_role);
MetaWaylandSurfaceRole *surface_role =
META_WAYLAND_SURFACE_ROLE (cursor_role);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (surface_role);
MetaWaylandBuffer *buffer;
buffer = meta_wayland_surface_get_buffer (surface);
if (buffer)
{
g_assert (buffer->resource);
g_set_object (&priv->buffer, buffer);
meta_wayland_surface_ref_buffer_use_count (surface);
}
}
static void
meta_wayland_surface_role_cursor_init (MetaWaylandSurfaceRoleCursor *role)
{
@ -250,6 +261,7 @@ meta_wayland_surface_role_cursor_class_init (MetaWaylandSurfaceRoleCursorClass *
surface_role_class->commit = cursor_surface_role_commit;
surface_role_class->is_on_output = cursor_surface_role_is_on_output;
object_class->constructed = cursor_surface_role_constructed;
object_class->dispose = cursor_surface_role_dispose;
}