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diff src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp @ 2324:0ac769a57c64

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6627983: G1: Bad oop deference during marking Summary: Bulk zeroing reduction didn't work with G1, because arraycopy would call pre-barriers on uninitialized oops. The solution is to have version of arraycopy stubs that don't have pre-barriers. Also refactored arraycopy stubs generation on SPARC to be more readable and reduced the number of stubs necessary in some cases. Reviewed-by: jrose, kvn, never
author iveresov
date Tue, 01 Mar 2011 14:56:48 -0800
parents f95d63e2154a
children 1d1603768966 e1162778c1c8
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp	Tue Mar 01 10:27:15 2011 -0800
+++ b/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp	Tue Mar 01 14:56:48 2011 -0800
@@ -83,11 +83,15 @@
   }
 
   template <class T> void write_ref_array_pre_work(T* dst, int count);
-  virtual void write_ref_array_pre(oop* dst, int count) {
-    write_ref_array_pre_work(dst, count);
+  virtual void write_ref_array_pre(oop* dst, int count, bool dest_uninitialized) {
+    if (!dest_uninitialized) {
+      write_ref_array_pre_work(dst, count);
+    }
   }
-  virtual void write_ref_array_pre(narrowOop* dst, int count) {
-    write_ref_array_pre_work(dst, count);
+  virtual void write_ref_array_pre(narrowOop* dst, int count, bool dest_uninitialized) {
+    if (!dest_uninitialized) {
+      write_ref_array_pre_work(dst, count);
+    }
   }
 };