Index: libcfa/src/concurrency/preemption.cfa
===================================================================
--- libcfa/src/concurrency/preemption.cfa	(revision 13fdf866f7f954372ac020e1f9c2e07c7f3eb131)
+++ libcfa/src/concurrency/preemption.cfa	(revision 1860885bf96eb1e05136e94b1b36893ab6369f93)
@@ -96,9 +96,4 @@
 	lock{};
 }
-
-enum {
-	PREEMPT_NORMAL    = 0,
-	PREEMPT_TERMINATE = 1,
-};
 
 //=============================================================================================
@@ -664,4 +659,5 @@
 	choose(sfp->si_value.sival_int) {
 		case PREEMPT_NORMAL   : ;// Normal case, nothing to do here
+		case PREEMPT_IO       : ;// I/O asked to stop spinning, nothing to do here
 		case PREEMPT_TERMINATE: verify( __atomic_load_n( &__cfaabi_tls.this_processor->do_terminate, __ATOMIC_SEQ_CST ) );
 		default: