src/share/vm/memory/genCollectedHeap.cpp

@@ -83,10 +83,18 @@
   _gen_policy(policy),
   _process_strong_tasks(new SubTasksDone(GCH_PS_NumElements)),
   _full_collections_completed(0)
 {
   assert(policy != NULL, "Sanity check");
+  if (UseConcMarkSweepGC) {
+    _workers = new FlexibleWorkGang("GC Thread", ParallelGCThreads,
+                            /* are_GC_task_threads */true,
+                            /* are_ConcurrentGC_threads */false);
+    _workers->initialize_workers();
+  } else {
+    _workers = NULL;
+  }
 }
 
 jint GenCollectedHeap::initialize() {
   CollectedHeap::pre_initialize();