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wayland/output: Remove wl_output global when making it inert

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This will make clients immediately aware of the output disappearing,
while still allowing for a grace period of 10 seconds for attempting to
bind to it before it turning into a protocol error. This API added as
part of wayland 1.18.

This requires us to not add the output resource to the output resource
list, if the output was made inert. This effectively makes the resource
useless, but that is harmless, since shortly after, the client will
clean it up anyway.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1796>
This commit is contained in:
Jonas Ådahl 2021-03-22 16:27:54 +01:00
parent 257ccf5e80
commit c0bc821f62
1 changed files with 10 additions and 9 deletions
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19
src/wayland/meta-wayland-outputs.c
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@ -312,15 +312,16 @@ bind_output (struct wl_client *client,
#endif
resource = wl_resource_create (client, &wl_output_interface, version, id);
wayland_output->resources = g_list_prepend (wayland_output->resources, resource);
wl_resource_set_user_data (resource, wayland_output);
wl_resource_set_destructor (resource, output_resource_destroy);
monitor = wayland_output->monitor;
if (!monitor)
return;
wayland_output->resources = g_list_prepend (wayland_output->resources,
resource);
wl_resource_set_user_data (resource, wayland_output);
wl_resource_set_destructor (resource, output_resource_destroy);
#ifdef WITH_VERBOSE_MODE
logical_monitor = meta_monitor_get_logical_monitor (monitor);
meta_verbose ("Binding monitor %p/%s (%u, %u, %u, %u) x %f",
@ -430,6 +431,8 @@ make_output_resources_inert (MetaWaylandOutput *wayland_output)
{
GList *l;
wl_global_remove (wayland_output->global);
for (l = wayland_output->resources; l; l = l->next)
{
struct wl_resource *output_resource = l->data;
@ -531,12 +534,10 @@ meta_wayland_output_finalize (GObject *object)
{
MetaWaylandOutput *wayland_output = META_WAYLAND_OUTPUT (object);
wl_global_destroy (wayland_output->global);
g_warn_if_fail (!wayland_output->resources);
g_warn_if_fail (!wayland_output->xdg_output_resources);
/* Make sure the wl_output destructor doesn't try to access MetaWaylandOutput
* after we have freed it.
*/
make_output_resources_inert (wayland_output);
wl_global_destroy (wayland_output->global);
G_OBJECT_CLASS (meta_wayland_output_parent_class)->finalize (object);
}