--- old/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	2020-07-29 15:26:46.143931317 +0800
+++ new/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	2020-07-29 15:26:45.855931306 +0800
@@ -1343,6 +1343,10 @@
   }
 }
 
+void ShenandoahHeap::run_task(AbstractGangTask* task) {
+  workers()->run_task(task, workers()->active_workers());
+}
+
 // Keep alive an object that was loaded with AS_NO_KEEPALIVE.
 void ShenandoahHeap::keep_alive(oop obj) {
   if (is_concurrent_mark_in_progress()) {