--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/Oop.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,224 @@
+/*
+ * Copyright 2000-2007 Sun Microsystems, Inc.  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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * 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
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.oops;
+
+import java.io.*;
+import java.util.*;
+import sun.jvm.hotspot.utilities.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.memory.CompactingPermGenGen;
+
+// Oop represents the superclass for all types of
+// objects in the HotSpot object heap.
+
+public class Oop {
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
+    Type type  = db.lookupType("oopDesc");
+    mark       = new CIntField(type.getCIntegerField("_mark"), 0);
+    klass      = new OopField(type.getOopField("_klass"), 0);
+    headerSize = type.getSize();
+  }
+
+  private OopHandle  handle;
+  private ObjectHeap heap;
+
+  Oop(OopHandle handle, ObjectHeap heap) {
+    this.handle = handle;
+    this.heap   = heap;
+  }
+
+  ObjectHeap getHeap()   { return heap; }
+
+  /** Should not be used or needed by most clients outside this
+      package; is needed, however, by {@link
+      sun.jvm.hotspot.utilities.MarkBits}. */
+  public OopHandle getHandle() { return handle; }
+
+  private static long headerSize;
+  public  static long getHeaderSize() { return headerSize; }
+
+  private static CIntField mark;
+  private static OopField  klass;
+
+  public boolean isShared() {
+    return CompactingPermGenGen.isShared(handle);
+  }
+
+  public boolean isSharedReadOnly() {
+    return CompactingPermGenGen.isSharedReadOnly(handle);
+  }
+
+  public boolean isSharedReadWrite() {
+    return CompactingPermGenGen.isSharedReadWrite(handle);
+  }
+
+  // Accessors for declared fields
+  public Mark  getMark()   { return new Mark(getHandle()); }
+  public Klass getKlass()  { return (Klass) klass.getValue(this); }
+
+  public boolean isA(Klass k) {
+    return getKlass().isSubtypeOf(k);
+  }
+
+  // Returns the byte size of this object
+  public long getObjectSize() {
+    Klass k = getKlass();
+    if (k instanceof InstanceKlass) {
+        return ((InstanceKlass)k).getSizeHelper()
+            * VM.getVM().getAddressSize();
+    }
+    // If it is not an instance, this method should be replaced.
+    return getHeaderSize();
+  }
+
+  // Type test operations
+  public boolean isInstance()          { return false; }
+  public boolean isInstanceRef()       { return false; }
+  public boolean isArray()             { return false; }
+  public boolean isObjArray()          { return false; }
+  public boolean isTypeArray()         { return false; }
+  public boolean isSymbol()            { return false; }
+  public boolean isKlass()             { return false; }
+  public boolean isThread()            { return false; }
+  public boolean isMethod()            { return false; }
+  public boolean isMethodData()        { return false; }
+  public boolean isConstantPool()      { return false; }
+  public boolean isConstantPoolCache() { return false; }
+  public boolean isCompiledICHolder()  { return false; }
+
+  // Align the object size.
+  public static long alignObjectSize(long size) {
+    return VM.getVM().alignUp(size, VM.getVM().getMinObjAlignmentInBytes());
+  }
+
+  // All vm's align longs, so pad out certain offsets.
+  public static long alignObjectOffset(long offset) {
+    return VM.getVM().alignUp(offset, VM.getVM().getBytesPerLong());
+  }
+
+  public boolean equals(Object obj) {
+    if (obj != null && (obj instanceof Oop)) {
+      return getHandle().equals(((Oop) obj).getHandle());
+    }
+    return false;
+ }
+
+  public int hashCode() { return getHandle().hashCode(); }
+
+  /** Identity hash in the target VM */
+  public long identityHash() {
+    Mark mark = getMark();
+    if (mark.isUnlocked() && (!mark.hasNoHash())) {
+      return (int) mark.hash();
+    } else if (mark.isMarked()) {
+      return (int) mark.hash();
+    } else {
+      return slowIdentityHash();
+    }
+  }
+
+  public long slowIdentityHash() {
+    return VM.getVM().getObjectSynchronizer().identityHashValueFor(this);
+  }
+
+  public void iterate(OopVisitor visitor, boolean doVMFields) {
+    visitor.setObj(this);
+    visitor.prologue();
+    iterateFields(visitor, doVMFields);
+    visitor.epilogue();
+  }
+
+  void iterateFields(OopVisitor visitor, boolean doVMFields) {
+    if (doVMFields) {
+      visitor.doCInt(mark, true);
+      visitor.doOop(klass, true);
+    }
+  }
+
+  public void print()      { printOn(System.out); }
+  public void printValue() { printValueOn(System.out); }
+  public void printRaw()   { printRawOn(System.out); }
+
+  public static void printOopValueOn(Oop obj, PrintStream tty) {
+    if (obj == null) {
+      tty.print("null");
+    } else {
+      obj.printValueOn(tty);
+      tty.print(" @ " + obj.getHandle());
+    }
+  }
+
+  public static void printOopAddressOn(Oop obj, PrintStream tty) {
+    if (obj == null) {
+      tty.print("null");
+    } else {
+      tty.print(obj.getHandle().toString());
+    }
+  }
+
+  public void printOn(PrintStream tty) {
+    OopPrinter printer = new OopPrinter(tty);
+    iterate(printer, true);
+  }
+
+  public void printValueOn(PrintStream tty) {
+    try {
+      tty.print("Oop for " + getKlass().getName().asString());
+    } catch (java.lang.NullPointerException e) {
+      tty.print("Oop");
+    }
+  }
+
+  public void printRawOn(PrintStream tty) {
+    tty.print("Dumping raw memory for ");
+    printValueOn(tty);
+    tty.println();
+    long size = getObjectSize() * 4;
+    for (long i = 0; i < size; i += 4) {
+      long memVal = getHandle().getCIntegerAt(i, 4, true);
+      tty.println(Long.toHexString(memVal));
+    }
+  }
+
+  public boolean verify() { return true;}
+
+  // Package-private routine to speed up ObjectHeap.newOop
+  static OopHandle getKlassForOopHandle(OopHandle handle) {
+    if (handle == null) {
+      return null;
+    }
+    return handle.getOopHandleAt(klass.getOffset());
+  }
+};