diff -r 81ce766c9111 -r b3e44e1b135d src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp
--- a/src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp	Fri Aug 16 08:42:09 2019 +0800
+++ b/src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp	Fri Aug 16 09:18:19 2019 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -123,6 +123,9 @@
     return JNI_ENOMEM;
   }
 
+  // Set up WorkGang
+  _workers.initialize_workers();
+
   return JNI_OK;
 }