diff -r ce2272390558 -r 7bb995fbd3c0 src/share/vm/runtime/globals.hpp
--- a/src/share/vm/runtime/globals.hpp	Mon Mar 09 13:34:00 2009 -0700
+++ b/src/share/vm/runtime/globals.hpp	Thu Mar 12 18:16:36 2009 -0700
@@ -662,6 +662,12 @@
   product(ccstrlist, OnOutOfMemoryError, "",                                \
           "Run user-defined commands on first java.lang.OutOfMemoryError")  \
                                                                             \
+  manageable(bool, HeapDumpBeforeFullGC, false,                             \
+          "Dump heap to file before any major stop-world GC")               \
+                                                                            \
+  manageable(bool, HeapDumpAfterFullGC, false,                              \
+          "Dump heap to file after any major stop-world GC")                \
+                                                                            \
   manageable(bool, HeapDumpOnOutOfMemoryError, false,                       \
           "Dump heap to file when java.lang.OutOfMemoryError is thrown")    \
                                                                             \
@@ -1971,6 +1977,12 @@
   product(bool, PrintHeapAtSIGBREAK, true,                                  \
           "Print heap layout in response to SIGBREAK")                      \
                                                                             \
+  manageable(bool, PrintClassHistogramBeforeFullGC, false,                  \
+          "Print a class histogram before any major stop-world GC")         \
+                                                                            \
+  manageable(bool, PrintClassHistogramAfterFullGC, false,                   \
+          "Print a class histogram after any major stop-world GC")          \
+                                                                            \
   manageable(bool, PrintClassHistogram, false,                              \
           "Print a histogram of class instances")                           \
                                                                             \