--- old/src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp	2020-04-28 11:55:50.887717811 +0800
+++ new/src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp	2020-04-28 11:55:50.711718714 +0800
@@ -536,6 +536,9 @@
   old_gen()->object_iterate(cl);
 }
 
+void ParallelScavengeHeap::run_task(AbstractGangTask* task) {
+  _workers.run_task(task);
+}
 
 HeapWord* ParallelScavengeHeap::block_start(const void* addr) const {
   if (young_gen()->is_in_reserved(addr)) {