src/share/vm/gc/g1/concurrentMarkThread.cpp

*** 1,6 ****
!  /*
   * Copyright (c) 2001, 2015, 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
--- 1,6 ----
! /*
   * Copyright (c) 2001, 2015, 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
*** 30,39 ****
--- 30,40 ----
  #include "gc/g1/g1MMUTracker.hpp"
  #include "gc/g1/suspendibleThreadSet.hpp"
  #include "gc/g1/vm_operations_g1.hpp"
  #include "gc/shared/gcTrace.hpp"
  #include "memory/resourceArea.hpp"
+ #include "runtime/orderAccess.hpp"
  #include "runtime/vmThread.hpp"
  
  // ======= Concurrent Mark Thread ========
  
  // The CM thread is created when the G1 garbage collector is used
*** 331,340 ****
--- 332,342 ----
      CGC_lock->wait(Mutex::_no_safepoint_check_flag);
    }
  
    if (started()) {
      set_in_progress();
+     OrderAccess::storestore();
      clear_started();
    }
  }
  
  // Note: As is the case with CMS - this method, although exported