src/share/vm/runtime/mutexLocker.cpp

rev 8719 : 8004687: G1: Parallelize object self-forwarding and scanning during an evacuation failure
Summary: Use the regular task queue during evacuation failure and allow per-thread preserved header queues to remove the global lock during evacuation failure.
Reviewed-by:
Contributed-by: Walter Florian Gugenberger <walter.gugenberger@gmail.com>

*** 81,91 ****
  Mutex*   Shared_SATB_Q_lock           = NULL;
  Mutex*   DirtyCardQ_FL_lock           = NULL;
  Monitor* DirtyCardQ_CBL_mon           = NULL;
  Mutex*   Shared_DirtyCardQ_lock       = NULL;
  Mutex*   ParGCRareEvent_lock          = NULL;
- Mutex*   EvacFailureStack_lock        = NULL;
  Mutex*   DerivedPointerTableGC_lock   = NULL;
  Mutex*   Compile_lock                 = NULL;
  Monitor* MethodCompileQueue_lock      = NULL;
  Monitor* CompileThread_lock           = NULL;
  Monitor* Compilation_lock             = NULL;
--- 81,90 ----
*** 199,209 ****
      def(FreeList_lock              , Mutex,   leaf     ,   true,  Monitor::_safepoint_check_never);
      def(SecondaryFreeList_lock     , Monitor, leaf     ,   true,  Monitor::_safepoint_check_never);
      def(OldSets_lock               , Mutex  , leaf     ,   true,  Monitor::_safepoint_check_never);
      def(RootRegionScan_lock        , Monitor, leaf     ,   true,  Monitor::_safepoint_check_never);
      def(MMUTracker_lock            , Mutex  , leaf     ,   true,  Monitor::_safepoint_check_never);
-     def(EvacFailureStack_lock      , Mutex  , nonleaf  ,   true,  Monitor::_safepoint_check_never);
  
      def(StringDedupQueue_lock      , Monitor, leaf,        true,  Monitor::_safepoint_check_never);
      def(StringDedupTable_lock      , Mutex  , leaf,        true,  Monitor::_safepoint_check_never);
    }
    def(ParGCRareEvent_lock          , Mutex  , leaf     ,   true,  Monitor::_safepoint_check_sometimes);
--- 198,207 ----