--- a/src/share/vm/runtime/mutexLocker.hpp	Thu Jan 26 14:14:55 2012 -0800
+++ b/src/share/vm/runtime/mutexLocker.hpp	Fri Jan 27 09:04:57 2012 +0100
@@ -136,6 +136,12 @@
 
 extern Mutex*   Management_lock;                 // a lock used to serialize JVM management
 extern Monitor* Service_lock;                    // a lock used for service thread operation
+extern Mutex*   Stacktrace_lock;                 // used to guard access to the stacktrace table
+
+extern Monitor* JfrQuery_lock;                   // protects JFR use
+extern Monitor* JfrMsg_lock;                     // protects JFR messaging
+extern Mutex*   JfrBuffer_lock;                  // protects JFR buffer operations
+extern Mutex*   JfrStream_lock;                  // protects JFR stream access
 
 // A MutexLocker provides mutual exclusion with respect to a given mutex
 // for the scope which contains the locker.  The lock is an OS lock, not