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diff src/share/vm/runtime/globals.hpp @ 8845:1b90c7607451

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2178143: JVM crashes if the number of bound CPUs changed during runtime Summary: Supply a new flag -XX:+AssumeMP to workaround the problem. With the flag is turned on, assume VM run on MP platform so is_MP() will return true that sync calls will not skip away. Reviewed-by: dholmes, acorn, dcubed, jmasa Contributed-by: yumin.qi@oracle.com
author minqi
date Wed, 27 Mar 2013 17:03:19 -0700
parents 36376b540a98
children 0c039865ef2b
line wrap: on
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--- a/src/share/vm/runtime/globals.hpp	Wed Mar 27 13:26:44 2013 -0700
+++ b/src/share/vm/runtime/globals.hpp	Wed Mar 27 17:03:19 2013 -0700
@@ -457,6 +457,9 @@
   lp64_product(intx, ObjectAlignmentInBytes, 8,                             \
           "Default object alignment in bytes, 8 is minimum")                \
                                                                             \
+  product(bool, AssumeMP, false,                                            \
+          "Instruct the VM to assume multiple processors are available")    \
+                                                                            \
   /* UseMembar is theoretically a temp flag used for memory barrier         \
    * removal testing.  It was supposed to be removed before FCS but has     \
    * been re-added (see 6401008) */                                         \