src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp

*** 1768,1777 ****
--- 1768,1782 ----
    _gc_tracer_stw(new (ResourceObj::C_HEAP, mtGC) G1NewTracer()),
    _gc_tracer_cm(new (ResourceObj::C_HEAP, mtGC) G1OldTracer()) {
  
    _g1h = this;
  
+   _workers = new FlexibleWorkGang("GC Thread", ParallelGCThreads,
+                           /* are_GC_task_threads */true,
+                           /* are_ConcurrentGC_threads */false);
+   _workers->initialize_workers();
+ 
    _allocator = G1Allocator::create_allocator(_g1h);
    _humongous_object_threshold_in_words = HeapRegion::GrainWords / 2;
  
    int n_queues = MAX2((int)ParallelGCThreads, 1);
    _task_queues = new RefToScanQueueSet(n_queues);