src/share/vm/runtime/globals.hpp

*** 3989,3998 ****
--- 3989,4016 ----
            "Enable event-based tracing")                                     \
                                                                              \
    product(bool, UseLockedTracing, false,                                    \
            "Use locked-tracing when doing event-based tracing")              \
                                                                              \
+   notproduct(intx, DelayInGCLogging, 0,                                     \
+           "Delay milliseconds to simulate IO blocking for GC log testing")  \
+                                                                             \
+   product(bool, AsyncGCLogging, true,                                       \
+           "Enble asynchronous GC logging")                                  \
+                                                                             \
+   product(intx, GCLogBufferSize, 500,                                       \
+           "Entries of ringbuffer for GC log writing")                       \
+                                                                             \
+   product(intx, GCLogFlushInterval, 200,                                    \
+           "Milliseconds between GC log flushings")                          \
+                                                                             \
+   product(bool, PrintGCLogFlushTime, false,                                 \
+           "Print the time for GC log flushings in seconds")                 \
+                                                                             \
+   diagnostic(bool, PrintGCLogStatistics, false,                             \
+           "Print statistics of dismissed GC log")                           \
+                                                                             \
    product_pd(bool, PreserveFramePointer,                                    \
               "Use the FP register for holding the frame pointer "           \
               "and not as a general purpose register.")
  
  /*