--- old/src/hotspot/share/gc/parallel/parallelScavengeHeap.hpp	2020-08-05 21:29:27.717604364 +0800
+++ new/src/hotspot/share/gc/parallel/parallelScavengeHeap.hpp	2020-08-05 21:29:27.417604353 +0800
@@ -220,6 +220,8 @@
   virtual void print_on(outputStream* st) const;
   virtual void print_on_error(outputStream* st) const;
   virtual void gc_threads_do(ThreadClosure* tc) const;
+  // Runs the given AbstractGangTask with the current active workers.
+  virtual void run_task(AbstractGangTask* task);
   virtual void print_tracing_info() const;
 
   virtual WorkGang* get_safepoint_workers() { return &_workers; }
@@ -259,9 +261,6 @@
   WorkGang& workers() {
     return _workers;
   }
-
-  // Runs the given AbstractGangTask with the current active workers.
-  virtual void run_task(AbstractGangTask* task);
 };
 
 // Class that can be used to print information about the