37 // Instead of using pointers to malloc()ed monitors and mutexes we should consider

    37 // Instead of using pointers to malloc()ed monitors and mutexes we should consider

    38 // eliminating the indirection and using instances instead.

    38 // eliminating the indirection and using instances instead.

    39 // Consider using GCC's __read_mostly.

    39 // Consider using GCC's __read_mostly.

    40 

    40 

    41 Mutex*   Patching_lock                = NULL;

    41 Mutex*   Patching_lock                = NULL;

    42 Monitor* SystemDictionary_lock        = NULL;

    43 Monitor* SystemDictionary_lock        = NULL;

    43 Mutex*   ProtectionDomainSet_lock     = NULL;

    44 Mutex*   ProtectionDomainSet_lock     = NULL;

    44 Mutex*   SharedDictionary_lock        = NULL;

    45 Mutex*   SharedDictionary_lock        = NULL;

    45 Mutex*   Module_lock                  = NULL;

    46 Mutex*   Module_lock                  = NULL;

    46 Mutex*   CompiledIC_lock              = NULL;

    47 Mutex*   CompiledIC_lock              = NULL;

    91 Monitor* InitCompleted_lock           = NULL;

    92 Monitor* InitCompleted_lock           = NULL;

    92 Monitor* BeforeExit_lock              = NULL;

    93 Monitor* BeforeExit_lock              = NULL;

    93 Monitor* Notify_lock                  = NULL;

    94 Monitor* Notify_lock                  = NULL;

    94 Mutex*   ProfilePrint_lock            = NULL;

    95 Mutex*   ProfilePrint_lock            = NULL;

    95 Mutex*   ExceptionCache_lock          = NULL;

    96 Mutex*   ExceptionCache_lock          = NULL;

    97 Mutex*   NMethodSweeperStats_lock     = NULL;

    97 Mutex*   NMethodSweeperStats_lock     = NULL;

    98 #ifndef PRODUCT

    98 #ifndef PRODUCT

    99 Mutex*   FullGCALot_lock              = NULL;

    99 Mutex*   FullGCALot_lock              = NULL;

   100 #endif

   100 #endif

   101 

   101 

   231 

   231 

   232   def(MetaspaceExpand_lock         , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);

   232   def(MetaspaceExpand_lock         , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);

   233   def(ClassLoaderDataGraph_lock    , PaddedMutex  , nonleaf,     true,  Monitor::_safepoint_check_always);

   233   def(ClassLoaderDataGraph_lock    , PaddedMutex  , nonleaf,     true,  Monitor::_safepoint_check_always);

   234 

   234 

   235   def(Patching_lock                , PaddedMutex  , special,     true,  Monitor::_safepoint_check_never);      // used for safepointing and code patching.

   235   def(Patching_lock                , PaddedMutex  , special,     true,  Monitor::_safepoint_check_never);      // used for safepointing and code patching.

   236   def(Service_lock                 , PaddedMonitor, special,     true,  Monitor::_safepoint_check_never);      // used for service thread operations

   237   def(Service_lock                 , PaddedMonitor, special,     true,  Monitor::_safepoint_check_never);      // used for service thread operations

   237   def(JmethodIdCreation_lock       , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_always); // used for creating jmethodIDs.

   238   def(JmethodIdCreation_lock       , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_always); // used for creating jmethodIDs.

   238 

   239 

   239   def(SystemDictionary_lock        , PaddedMonitor, leaf,        true,  Monitor::_safepoint_check_always);

   240   def(SystemDictionary_lock        , PaddedMonitor, leaf,        true,  Monitor::_safepoint_check_always);

   240   def(ProtectionDomainSet_lock     , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);

   241   def(ProtectionDomainSet_lock     , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);

   246   def(JNIHandleBlockFreeList_lock  , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);      // handles are used by VM thread

   247   def(JNIHandleBlockFreeList_lock  , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);      // handles are used by VM thread

   247   def(SignatureHandlerLibrary_lock , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always);

   248   def(SignatureHandlerLibrary_lock , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always);

   248   def(SymbolArena_lock             , PaddedMutex  , leaf+2,      true,  Monitor::_safepoint_check_never);

   249   def(SymbolArena_lock             , PaddedMutex  , leaf+2,      true,  Monitor::_safepoint_check_never);

   249   def(ProfilePrint_lock            , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always); // serial profile printing

   250   def(ProfilePrint_lock            , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always); // serial profile printing

   250   def(ExceptionCache_lock          , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always); // serial profile printing

   251   def(ExceptionCache_lock          , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always); // serial profile printing

   252   def(Debug1_lock                  , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_never);

   252   def(Debug1_lock                  , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_never);

   253 #ifndef PRODUCT

   253 #ifndef PRODUCT

   254   def(FullGCALot_lock              , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always); // a lock to make FullGCALot MT safe

   254   def(FullGCALot_lock              , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always); // a lock to make FullGCALot MT safe

   255 #endif

   255 #endif

   256   def(BeforeExit_lock              , PaddedMonitor, leaf,        true,  Monitor::_safepoint_check_always);

   256   def(BeforeExit_lock              , PaddedMonitor, leaf,        true,  Monitor::_safepoint_check_always);