agent/src/share/classes/sun/jvm/hotspot/code/PCDesc.java

rev 1162 : 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
Summary: use PcDesc to keep record of the reexecute bit instead of using DebugInfoStreams
Reviewed-by: kvn, never, twisti
rev 1271 : 6892186: SA does not dump debug info for scalar replaced objects
Summary: Implement scalar replaced objects debug info dump in SA.
Reviewed-by: twisti
rev 1539 : 6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
rev 1547 : Merge

@@ -1,7 +1,7 @@
 /*
- * Copyright 2000-2004 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright (c) 2000, 2009, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -14,12 +14,12 @@
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores,
+ * CA 94065 USA or visit www.oracle.com if you need additional information or
  * have any questions.
  *
  */
 
 package sun.jvm.hotspot.code;

@@ -34,10 +34,12 @@
     to the corresponding source scope and byte code index. */
 
 public class PCDesc extends VMObject {
   private static CIntegerField pcOffsetField;
   private static CIntegerField scopeDecodeOffsetField;
+  private static CIntegerField objDecodeOffsetField;
+  private static CIntegerField pcFlagsField;
 
   static {
     VM.registerVMInitializedObserver(new Observer() {
         public void update(Observable o, Object data) {
           initialize(VM.getVM().getTypeDataBase());

@@ -48,10 +50,12 @@
   private static void initialize(TypeDataBase db) {
     Type type = db.lookupType("PcDesc");
 
     pcOffsetField          = type.getCIntegerField("_pc_offset");
     scopeDecodeOffsetField = type.getCIntegerField("_scope_decode_offset");
+    objDecodeOffsetField   = type.getCIntegerField("_obj_decode_offset");
+    pcFlagsField           = type.getCIntegerField("_flags");
   }
 
   public PCDesc(Address addr) {
     super(addr);
   }

@@ -64,14 +68,24 @@
 
   public int getScopeDecodeOffset() {
     return ((int) scopeDecodeOffsetField.getValue(addr));
   }
 
+  public int getObjDecodeOffset() {
+    return ((int) objDecodeOffsetField.getValue(addr));
+  }
+
   public Address getRealPC(NMethod code) {
     return code.instructionsBegin().addOffsetTo(getPCOffset());
   }
 
+
+  public boolean getReexecute() {
+    int flags = (int)pcFlagsField.getValue(addr);
+    return ((flags & 0x1)== 1); //first is the reexecute bit
+  }
+
   public void print(NMethod code) {
     printOn(System.out, code);
   }
 
   public void printOn(PrintStream tty, NMethod code) {