*** old/src/share/vm/gc_implementation/g1/concurrentG1RefineThread.cpp	Thu Dec  4 16:47:24 2014
--- new/src/share/vm/gc_implementation/g1/concurrentG1RefineThread.cpp	Thu Dec  4 16:47:21 2014

*** 1,7 ****
--- 1,7 ----
  /*
!  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2001, 2014, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

*** 50,60 ****
--- 50,61 ----
    // to thread i+1 if the number of buffers in the queue exceeds a threshold for this
    // thread. Monitors are also used to wake up the threads during termination.
    // The 0th worker in notified by mutator threads and has a special monitor.
    // The last worker is used for young gen rset size sampling.
    if (worker_id > 0) {
!     _monitor = new Monitor(Mutex::nonleaf, "Refinement monitor", true);
!     _monitor = new Monitor(Mutex::nonleaf, "Refinement monitor", true,
+                            Monitor::_safepoint_check_never);
    } else {
      _monitor = DirtyCardQ_CBL_mon;
    }
    initialize();
    create_and_start();