server: add wl_display getter for wl_global

This can be useful if the compositor wants to call wl_global_destroy() with some
delay but it doesn't have the wl_display object associated with the global,
which is needed to get access to the event loop.

Signed-off-by: Vlad Zahorodnii <vlad.zahorodnii@kde.org>

2 files changed, 17 insertions, 0 deletions

diff --git a/src/wayland-server-core.h b/src/wayland-server-core.h
index 64d7169..cbc70c0 100644
--- a/src/wayland-server-core.h
+++ b/src/wayland-server-core.h
@@ -279,6 +279,9 @@ wl_display_set_global_filter(struct wl_display *display,
 const struct wl_interface *
 wl_global_get_interface(const struct wl_global *global);
 
+struct wl_display *
+wl_global_get_display(const struct wl_global *global);
+
 void *
 wl_global_get_user_data(const struct wl_global *global);
 
diff --git a/src/wayland-server.c b/src/wayland-server.c
index 0ce5daf..0120326 100644
--- a/src/wayland-server.c
+++ b/src/wayland-server.c
@@ -1277,6 +1277,20 @@ wl_global_get_interface(const struct wl_global *global)
 	return global->interface;
 }
 
+/** Get the display object for the given global
+ *
+ * \param global The global object
+ * \return The display object the global is associated with.
+ *
+ * \memberof wl_global
+ * \since 1.20
+ */
+WL_EXPORT struct wl_display *
+wl_global_get_display(const struct wl_global *global)
+{
+	return global->display;
+}
+
 WL_EXPORT void *
 wl_global_get_user_data(const struct wl_global *global)
 {