--- old/src/hotspot/share/gc/shenandoah/shenandoahPacer.cpp	2019-09-08 23:47:50.931879958 -0400
+++ new/src/hotspot/share/gc/shenandoah/shenandoahPacer.cpp	2019-09-08 23:47:49.691867224 -0400
@@ -242,7 +242,7 @@
     }
     cur = MAX2<size_t>(1, cur);
 
-    os::sleep(JavaThread::current(), cur);
+    JavaThread::current()->sleep(cur);
 
     double end = os::elapsedTime();
     total = (size_t)((end - start) * 1000);