diff src/cpu/zero/vm/interpreterGenerator_zero.hpp @ 2346:e1162778c1c8

7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer. Reviewed-by: kvn, iveresov, never, tonyp, dholmes
author johnc
date Thu, 07 Apr 2011 09:53:20 -0700
parents f95d63e2154a
children 1d7922586cf6
line wrap: on
line diff
--- a/src/cpu/zero/vm/interpreterGenerator_zero.hpp	Tue Apr 05 19:14:03 2011 -0700
+++ b/src/cpu/zero/vm/interpreterGenerator_zero.hpp	Thu Apr 07 09:53:20 2011 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -37,6 +37,7 @@
   address generate_math_entry(AbstractInterpreter::MethodKind kind);
   address generate_empty_entry();
   address generate_accessor_entry();
+  address generate_Reference_get_entry();
   address generate_method_handle_entry();
 
 #endif // CPU_ZERO_VM_INTERPRETERGENERATOR_ZERO_HPP