117 extern Mutex*   RawMonitor_lock;
 118 extern Mutex*   PerfDataMemAlloc_lock;           // a lock on the allocator for PerfData memory for performance data
 119 extern Mutex*   PerfDataManager_lock;            // a long on access to PerfDataManager resources
 120 extern Mutex*   ParkerFreeList_lock;
 121 extern Mutex*   OopMapCacheAlloc_lock;           // protects allocation of oop_map caches
 122 
 123 extern Mutex*   FreeList_lock;                   // protects the free region list during safepoints
 124 extern Mutex*   OldSets_lock;                    // protects the old region sets
 125 extern Monitor* RootRegionScan_lock;             // used to notify that the CM threads have finished scanning the IM snapshot regions
 126 
 127 extern Mutex*   Management_lock;                 // a lock used to serialize JVM management
 128 extern Monitor* Service_lock;                    // a lock used for service thread operation
 129 extern Monitor* PeriodicTask_lock;               // protects the periodic task structure
 130 extern Monitor* RedefineClasses_lock;            // locks classes from parallel redefinition
 131 extern Monitor* ThreadsSMRDelete_lock;           // Used by ThreadsSMRSupport to take pressure off the Threads_lock
 132 extern Mutex*   SharedDecoder_lock;              // serializes access to the decoder during normal (not error reporting) use
 133 extern Mutex*   DCmdFactory_lock;                // serialize access to DCmdFactory information
 134 #if INCLUDE_NMT
 135 extern Mutex*   NMTQuery_lock;                   // serialize NMT Dcmd queries
 136 #endif



 137 #if INCLUDE_JFR
 138 extern Mutex*   JfrStacktrace_lock;              // used to guard access to the JFR stacktrace table
 139 extern Monitor* JfrMsg_lock;                     // protects JFR messaging
 140 extern Mutex*   JfrBuffer_lock;                  // protects JFR buffer operations
 141 extern Mutex*   JfrStream_lock;                  // protects JFR stream access
 142 extern Monitor* JfrThreadSampler_lock;           // used to suspend/resume JFR thread sampler
 143 #endif
 144 
 145 #ifndef SUPPORTS_NATIVE_CX8
 146 extern Mutex*   UnsafeJlong_lock;                // provides Unsafe atomic updates to jlongs on platforms that don't support cx8
 147 #endif
 148 
 149 extern Mutex*   MetaspaceExpand_lock;            // protects Metaspace virtualspace and chunk expansions
 150 extern Mutex*   ClassLoaderDataGraph_lock;       // protects CLDG list, needed for concurrent unloading
 151 
 152 
 153 extern Monitor* CodeHeapStateAnalytics_lock;     // lock print functions against concurrent analyze functions.
 154                                                  // Only used locally in PrintCodeCacheLayout processing.
 155 
 156 // A MutexLocker provides mutual exclusion with respect to a given mutex

 117 extern Mutex*   RawMonitor_lock;
 118 extern Mutex*   PerfDataMemAlloc_lock;           // a lock on the allocator for PerfData memory for performance data
 119 extern Mutex*   PerfDataManager_lock;            // a long on access to PerfDataManager resources
 120 extern Mutex*   ParkerFreeList_lock;
 121 extern Mutex*   OopMapCacheAlloc_lock;           // protects allocation of oop_map caches
 122 
 123 extern Mutex*   FreeList_lock;                   // protects the free region list during safepoints
 124 extern Mutex*   OldSets_lock;                    // protects the old region sets
 125 extern Monitor* RootRegionScan_lock;             // used to notify that the CM threads have finished scanning the IM snapshot regions
 126 
 127 extern Mutex*   Management_lock;                 // a lock used to serialize JVM management
 128 extern Monitor* Service_lock;                    // a lock used for service thread operation
 129 extern Monitor* PeriodicTask_lock;               // protects the periodic task structure
 130 extern Monitor* RedefineClasses_lock;            // locks classes from parallel redefinition
 131 extern Monitor* ThreadsSMRDelete_lock;           // Used by ThreadsSMRSupport to take pressure off the Threads_lock
 132 extern Mutex*   SharedDecoder_lock;              // serializes access to the decoder during normal (not error reporting) use
 133 extern Mutex*   DCmdFactory_lock;                // serialize access to DCmdFactory information
 134 #if INCLUDE_NMT
 135 extern Mutex*   NMTQuery_lock;                   // serialize NMT Dcmd queries
 136 #endif
 137 #if INCLUDE_CDS && INCLUDE_JVMTI
 138 extern Mutex*   CDSClassFileStream_lock;         // FileMapInfo::open_stream_for_jvmti
 139 #endif
 140 #if INCLUDE_JFR
 141 extern Mutex*   JfrStacktrace_lock;              // used to guard access to the JFR stacktrace table
 142 extern Monitor* JfrMsg_lock;                     // protects JFR messaging
 143 extern Mutex*   JfrBuffer_lock;                  // protects JFR buffer operations
 144 extern Mutex*   JfrStream_lock;                  // protects JFR stream access
 145 extern Monitor* JfrThreadSampler_lock;           // used to suspend/resume JFR thread sampler
 146 #endif
 147 
 148 #ifndef SUPPORTS_NATIVE_CX8
 149 extern Mutex*   UnsafeJlong_lock;                // provides Unsafe atomic updates to jlongs on platforms that don't support cx8
 150 #endif
 151 
 152 extern Mutex*   MetaspaceExpand_lock;            // protects Metaspace virtualspace and chunk expansions
 153 extern Mutex*   ClassLoaderDataGraph_lock;       // protects CLDG list, needed for concurrent unloading
 154 
 155 
 156 extern Monitor* CodeHeapStateAnalytics_lock;     // lock print functions against concurrent analyze functions.
 157                                                  // Only used locally in PrintCodeCacheLayout processing.
 158 
 159 // A MutexLocker provides mutual exclusion with respect to a given mutex