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diff src/share/vm/runtime/globals.hpp @ 263:12eea04c8b06

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6672698: mangle_unused_area() should not remangle the entire heap at each collection. Summary: Maintain a high water mark for the allocations in a space and mangle only up to that high water mark. Reviewed-by: ysr, apetrusenko
author jmasa
date Wed, 09 Jul 2008 15:08:55 -0700
parents ab65a4c9b2e8
children 850fdf70db2b
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--- a/src/share/vm/runtime/globals.hpp	Fri Jun 27 19:12:11 2008 -0700
+++ b/src/share/vm/runtime/globals.hpp	Wed Jul 09 15:08:55 2008 -0700
@@ -589,9 +589,15 @@
   develop(bool, ZapJNIHandleArea, trueInDebug,                              \
           "Zap freed JNI handle space with 0xFEFEFEFE")                     \
                                                                             \
-  develop(bool, ZapUnusedHeapArea, false,                                   \
+  develop(bool, ZapUnusedHeapArea, trueInDebug,                             \
           "Zap unused heap space with 0xBAADBABE")                          \
                                                                             \
+  develop(bool, TraceZapUnusedHeapArea, false,                              \
+          "Trace zapping of unused heap space")                             \
+                                                                            \
+  develop(bool, CheckZapUnusedHeapArea, false,                              \
+          "Check zapping of unused heap space")                             \
+                                                                            \
   develop(bool, PrintVMMessages, true,                                      \
           "Print vm messages on console")                                   \
                                                                             \