--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/memory/Universe.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2000-2006 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.memory;
+
+import java.io.*;
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.gc_interface.*;
+import sun.jvm.hotspot.gc_implementation.parallelScavenge.*;
+import sun.jvm.hotspot.oops.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.runtime.*;
+
+
+public class Universe {
+  private static AddressField collectedHeapField;
+  private static VirtualConstructor heapConstructor;
+  private static sun.jvm.hotspot.types.OopField mainThreadGroupField;
+  private static sun.jvm.hotspot.types.OopField systemThreadGroupField;
+
+  // single dimensional primitive array klasses
+  private static sun.jvm.hotspot.types.OopField boolArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField byteArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField charArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField intArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField shortArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField longArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField singleArrayKlassObjField;
+  private static sun.jvm.hotspot.types.OopField doubleArrayKlassObjField;
+
+  // system obj array klass object
+  private static sun.jvm.hotspot.types.OopField systemObjArrayKlassObjField;
+
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) {
+    Type type = db.lookupType("Universe");
+
+    collectedHeapField = type.getAddressField("_collectedHeap");
+
+    heapConstructor = new VirtualConstructor(db);
+    heapConstructor.addMapping("GenCollectedHeap", GenCollectedHeap.class);
+    heapConstructor.addMapping("ParallelScavengeHeap", ParallelScavengeHeap.class);
+
+    mainThreadGroupField   = type.getOopField("_main_thread_group");
+    systemThreadGroupField = type.getOopField("_system_thread_group");
+
+    boolArrayKlassObjField = type.getOopField("_boolArrayKlassObj");
+    byteArrayKlassObjField = type.getOopField("_byteArrayKlassObj");
+    charArrayKlassObjField = type.getOopField("_charArrayKlassObj");
+    intArrayKlassObjField = type.getOopField("_intArrayKlassObj");
+    shortArrayKlassObjField = type.getOopField("_shortArrayKlassObj");
+    longArrayKlassObjField = type.getOopField("_longArrayKlassObj");
+    singleArrayKlassObjField = type.getOopField("_singleArrayKlassObj");
+    doubleArrayKlassObjField = type.getOopField("_doubleArrayKlassObj");
+
+    systemObjArrayKlassObjField = type.getOopField("_systemObjArrayKlassObj");
+  }
+
+  public Universe() {
+  }
+
+  public CollectedHeap heap() {
+    try {
+      return (CollectedHeap) heapConstructor.instantiateWrapperFor(collectedHeapField.getValue());
+    } catch (WrongTypeException e) {
+      return new CollectedHeap(collectedHeapField.getValue());
+    }
+  }
+
+  /** Returns "TRUE" iff "p" points into the allocated area of the heap. */
+  public boolean isIn(Address p) {
+    return heap().isIn(p);
+  }
+
+  /** Returns "TRUE" iff "p" points into the reserved area of the heap. */
+  public boolean isInReserved(Address p) {
+    return heap().isInReserved(p);
+  }
+
+  private Oop newOop(OopHandle handle) {
+    return VM.getVM().getObjectHeap().newOop(handle);
+  }
+
+  public Oop mainThreadGroup() {
+    return newOop(mainThreadGroupField.getValue());
+  }
+
+  public Oop systemThreadGroup() {
+    return newOop(systemThreadGroupField.getValue());
+  }
+
+  public Oop systemObjArrayKlassObj() {
+    return newOop(systemObjArrayKlassObjField.getValue());
+  }
+
+  // iterate through the single dimensional primitive array klasses
+  // refer to basic_type_classes_do(void f(klassOop)) in universe.cpp
+  public void basicTypeClassesDo(SystemDictionary.ClassVisitor visitor) {
+    visitor.visit((Klass)newOop(boolArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(byteArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(charArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(intArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(shortArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(longArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(singleArrayKlassObjField.getValue()));
+    visitor.visit((Klass)newOop(doubleArrayKlassObjField.getValue()));
+  }
+
+  public void print() { printOn(System.out); }
+  public void printOn(PrintStream tty) {
+    heap().printOn(tty);
+  }
+
+  // Check whether an element of a typeArrayOop with the given type must be
+  // aligned 0 mod 8.  The typeArrayOop itself must be aligned at least this
+  // strongly.
+  public static boolean elementTypeShouldBeAligned(BasicType type) {
+    return type == BasicType.T_DOUBLE || type == BasicType.T_LONG;
+  }
+
+  // Check whether an object field (static/non-static) of the given type must be
+  // aligned 0 mod 8.
+  public static boolean fieldTypeShouldBeAligned(BasicType type) {
+    return type == BasicType.T_DOUBLE || type == BasicType.T_LONG;
+  }
+}