src/hotspot/share/gc/z/zWeakRootsProcessor.cpp

*** 60,10 ***
--- 60,14 ---
  public:
    ZProcessConcurrentWeakRootsTask() :
        ZTask("ZProcessConccurentWeakRootsTask"),
        _concurrent_weak_roots() {}
  
+   ~ZProcessConcurrentWeakRootsTask() {
+     _concurrent_weak_roots.notify();
+   }
+ 
    virtual void work() {
      ZPhantomCleanOopClosure cl;
      _concurrent_weak_roots.oops_do(&cl);
    }
  };