| /* |
| * Copyright (c) 2000, 2005, 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. |
| * |
| * 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 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.gc_interface; |
| |
| import java.io.*; |
| import java.util.*; |
| |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.memory.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.types.*; |
| |
| public class CollectedHeap extends VMObject { |
| private static long reservedFieldOffset; |
| |
| 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("CollectedHeap"); |
| |
| reservedFieldOffset = type.getField("_reserved").getOffset(); |
| } |
| |
| public CollectedHeap(Address addr) { |
| super(addr); |
| } |
| |
| /** Returns the lowest address of the heap. */ |
| public Address start() { |
| return reservedRegion().start(); |
| } |
| |
| public long capacity() { return 0; } |
| public long used() { return 0; } |
| |
| public MemRegion reservedRegion() { |
| return new MemRegion(addr.addOffsetTo(reservedFieldOffset)); |
| } |
| |
| public boolean isIn(Address a) { |
| return isInReserved(a); |
| } |
| |
| public boolean isInReserved(Address a) { |
| return reservedRegion().contains(a); |
| } |
| |
| public CollectedHeapName kind() { |
| return CollectedHeapName.ABSTRACT; |
| } |
| |
| public void print() { printOn(System.out); } |
| public void printOn(PrintStream tty) { |
| MemRegion mr = reservedRegion(); |
| tty.println("unknown subtype of CollectedHeap @ " + getAddress() + " (" + |
| mr.start() + "," + mr.end() + ")"); |
| } |
| } |