static void cr_finish_all_guarded_devices_at_end (VALUE data) { rb_hash_foreach (rb_cairo__gc_guarded_objects (rb_cCairo_Device), cr_finish_all_guarded_devices_at_end_iter, Qnil); }
static void cr_destroy_all_guarded_contexts_at_end (VALUE data) { rb_hash_foreach (rb_cairo__gc_guarded_objects (rb_cCairo_Context), cr_destroy_all_guarded_contexts_at_end_iter, Qnil); }