*** old/src/share/vm/runtime/globals.hpp	Thu Jun 26 14:00:00 2014
--- new/src/share/vm/runtime/globals.hpp	Thu Jun 26 14:00:00 2014

*** 2285,2294 ****
--- 2285,2297 ----
            "Print date stamps at garbage collection")                        \
                                                                              \
    manageable(bool, PrintGCTimeStamps, false,                                \
            "Print timestamps at garbage collection")                         \
                                                                              \
+   manageable(bool, PrintGCID, false,                                        \
+           "Print an identifier for each garbage collection")                \
+                                                                             \
    product(bool, PrintGCTaskTimeStamps, false,                               \
            "Print timestamps for individual gc worker thread tasks")         \
                                                                              \
    develop(intx, ConcGCYieldTimeout, 0,                                      \
            "If non-zero, assert that GC threads yield within this "          \