< prev index next >

src/hotspot/share/runtime/mutexLocker.hpp

Print this page




 108 extern Mutex*   Debug3_lock;
 109 
 110 extern Mutex*   RawMonitor_lock;
 111 extern Mutex*   PerfDataMemAlloc_lock;           // a lock on the allocator for PerfData memory for performance data
 112 extern Mutex*   PerfDataManager_lock;            // a long on access to PerfDataManager resources
 113 extern Mutex*   ParkerFreeList_lock;
 114 extern Mutex*   OopMapCacheAlloc_lock;           // protects allocation of oop_map caches
 115 
 116 extern Mutex*   FreeList_lock;                   // protects the free region list during safepoints
 117 extern Monitor* SecondaryFreeList_lock;          // protects the secondary free region list
 118 extern Mutex*   OldSets_lock;                    // protects the old region sets
 119 extern Monitor* RootRegionScan_lock;             // used to notify that the CM threads have finished scanning the IM snapshot regions
 120 extern Mutex*   MMUTracker_lock;                 // protects the MMU
 121                                                  // tracker data structures
 122 
 123 extern Mutex*   Management_lock;                 // a lock used to serialize JVM management
 124 extern Monitor* Service_lock;                    // a lock used for service thread operation
 125 extern Monitor* PeriodicTask_lock;               // protects the periodic task structure
 126 extern Monitor* RedefineClasses_lock;            // locks classes from parallel redefinition
 127 


 128 #if INCLUDE_TRACE
 129 extern Mutex*   JfrStacktrace_lock;              // used to guard access to the JFR stacktrace table
 130 extern Monitor* JfrMsg_lock;                     // protects JFR messaging
 131 extern Mutex*   JfrBuffer_lock;                  // protects JFR buffer operations
 132 extern Mutex*   JfrStream_lock;                  // protects JFR stream access
 133 extern Mutex*   JfrThreadGroups_lock;            // protects JFR access to Thread Groups
 134 #endif
 135 
 136 #ifndef SUPPORTS_NATIVE_CX8
 137 extern Mutex*   UnsafeJlong_lock;                // provides Unsafe atomic updates to jlongs on platforms that don't support cx8
 138 #endif
 139 
 140 // A MutexLocker provides mutual exclusion with respect to a given mutex
 141 // for the scope which contains the locker.  The lock is an OS lock, not
 142 // an object lock, and the two do not interoperate.  Do not use Mutex-based
 143 // locks to lock on Java objects, because they will not be respected if a
 144 // that object is locked using the Java locking mechanism.
 145 //
 146 //                NOTE WELL!!
 147 //




 108 extern Mutex*   Debug3_lock;
 109 
 110 extern Mutex*   RawMonitor_lock;
 111 extern Mutex*   PerfDataMemAlloc_lock;           // a lock on the allocator for PerfData memory for performance data
 112 extern Mutex*   PerfDataManager_lock;            // a long on access to PerfDataManager resources
 113 extern Mutex*   ParkerFreeList_lock;
 114 extern Mutex*   OopMapCacheAlloc_lock;           // protects allocation of oop_map caches
 115 
 116 extern Mutex*   FreeList_lock;                   // protects the free region list during safepoints
 117 extern Monitor* SecondaryFreeList_lock;          // protects the secondary free region list
 118 extern Mutex*   OldSets_lock;                    // protects the old region sets
 119 extern Monitor* RootRegionScan_lock;             // used to notify that the CM threads have finished scanning the IM snapshot regions
 120 extern Mutex*   MMUTracker_lock;                 // protects the MMU
 121                                                  // tracker data structures
 122 
 123 extern Mutex*   Management_lock;                 // a lock used to serialize JVM management
 124 extern Monitor* Service_lock;                    // a lock used for service thread operation
 125 extern Monitor* PeriodicTask_lock;               // protects the periodic task structure
 126 extern Monitor* RedefineClasses_lock;            // locks classes from parallel redefinition
 127 
 128 extern Monitor* HeapMonitor_lock;                // protects internal storage in HeapMonitoring
 129 
 130 #if INCLUDE_TRACE
 131 extern Mutex*   JfrStacktrace_lock;              // used to guard access to the JFR stacktrace table
 132 extern Monitor* JfrMsg_lock;                     // protects JFR messaging
 133 extern Mutex*   JfrBuffer_lock;                  // protects JFR buffer operations
 134 extern Mutex*   JfrStream_lock;                  // protects JFR stream access
 135 extern Mutex*   JfrThreadGroups_lock;            // protects JFR access to Thread Groups
 136 #endif
 137 
 138 #ifndef SUPPORTS_NATIVE_CX8
 139 extern Mutex*   UnsafeJlong_lock;                // provides Unsafe atomic updates to jlongs on platforms that don't support cx8
 140 #endif
 141 
 142 // A MutexLocker provides mutual exclusion with respect to a given mutex
 143 // for the scope which contains the locker.  The lock is an OS lock, not
 144 // an object lock, and the two do not interoperate.  Do not use Mutex-based
 145 // locks to lock on Java objects, because they will not be respected if a
 146 // that object is locked using the Java locking mechanism.
 147 //
 148 //                NOTE WELL!!
 149 //


< prev index next >