src/hotspot/share/runtime/mutexLocker.cpp

rev 60137 : 8227745: Enable Escape Analysis for Better Performance in the Presence of JVMTI Agents
Reviewed-by: mdoerr, goetz

*** 50,59 ****
--- 50,60 ----
  Mutex*   JNIHandleBlockFreeList_lock  = NULL;
  Mutex*   JmethodIdCreation_lock       = NULL;
  Mutex*   JfieldIdCreation_lock        = NULL;
  Monitor* JNICritical_lock             = NULL;
  Mutex*   JvmtiThreadState_lock        = NULL;
+ Monitor* EscapeBarrier_lock           = NULL;
  Monitor* Heap_lock                    = NULL;
  Mutex*   ExpandHeap_lock              = NULL;
  Mutex*   AdapterHandlerLibrary_lock   = NULL;
  Mutex*   SignatureHandlerLibrary_lock = NULL;
  Mutex*   VtableStubs_lock             = NULL;
*** 298,307 ****
--- 299,309 ----
    def(CompileStatistics_lock       , PaddedMutex  , nonleaf+2,   false, _safepoint_check_always);
    def(DirectivesStack_lock         , PaddedMutex  , special,     true,  _safepoint_check_never);
    def(MultiArray_lock              , PaddedMutex  , nonleaf+2,   false, _safepoint_check_always);
  
    def(JvmtiThreadState_lock        , PaddedMutex  , nonleaf+2,   false, _safepoint_check_always); // Used by JvmtiThreadState/JvmtiEventController
+   def(EscapeBarrier_lock           , PaddedMonitor, leaf,        false, _safepoint_check_never);  // Used to synchronize object reallocation/relocking triggered by JVMTI
    def(Management_lock              , PaddedMutex  , nonleaf+2,   false, _safepoint_check_always); // used for JVM management
  
    def(ConcurrentGCBreakpoints_lock , PaddedMonitor, nonleaf,     true,  _safepoint_check_always);
    def(Compile_lock                 , PaddedMutex  , nonleaf+3,   false, _safepoint_check_always);
    def(MethodData_lock              , PaddedMutex  , nonleaf+3,   false, _safepoint_check_always);