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diff src/cpu/x86/vm/vm_version_x86.cpp @ 7587:4a916f2ce331

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8003985: Support @Contended Annotation - JEP 142 Summary: HotSpot changes to support @Contended annotation. Reviewed-by: coleenp, kvn, jrose Contributed-by: Aleksey Shipilev <aleksey.shipilev@oracle.com>
author jwilhelm
date Mon, 14 Jan 2013 15:17:47 +0100
parents 2c7f594145dc
children 92d4b5d8dde4
line wrap: on
line diff
--- a/src/cpu/x86/vm/vm_version_x86.cpp	Fri Jan 11 09:53:24 2013 -0800
+++ b/src/cpu/x86/vm/vm_version_x86.cpp	Mon Jan 14 15:17:47 2013 +0100
@@ -734,6 +734,10 @@
   PrefetchFieldsAhead         = prefetch_fields_ahead();
 #endif
 
+  if (FLAG_IS_DEFAULT(ContendedPaddingWidth) &&
+     (cache_line_size > ContendedPaddingWidth))
+     ContendedPaddingWidth = cache_line_size;
+
 #ifndef PRODUCT
   if (PrintMiscellaneous && Verbose) {
     tty->print_cr("Logical CPUs per core: %u",
@@ -780,6 +784,9 @@
     if (PrefetchFieldsAhead > 0) {
       tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead);
     }
+    if (ContendedPaddingWidth > 0) {
+      tty->print_cr("ContendedPaddingWidth %d", ContendedPaddingWidth);
+    }
   }
 #endif // !PRODUCT
 }