| /* |
| * Copyright 2000-2005 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.runtime.*; |
| import sun.jvm.hotspot.types.*; |
| |
| /** This is the "generation" view of a CompactingPermGen. */ |
| public class CompactingPermGenGen extends OneContigSpaceCardGeneration { |
| private static AddressField unsharedBottomField; |
| private static AddressField unsharedEndField; |
| private static AddressField sharedBottomField; |
| private static AddressField sharedEndField; |
| private static AddressField readOnlyBottomField; |
| private static AddressField readOnlyEndField; |
| private static AddressField readWriteBottomField; |
| private static AddressField readWriteEndField; |
| private static AddressField roSpaceField; |
| private static AddressField rwSpaceField; |
| |
| 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("CompactingPermGenGen"); |
| unsharedBottomField = type.getAddressField("unshared_bottom"); |
| unsharedEndField = type.getAddressField("unshared_end"); |
| sharedBottomField = type.getAddressField("shared_bottom"); |
| sharedEndField = type.getAddressField("shared_end"); |
| readOnlyBottomField = type.getAddressField("readonly_bottom"); |
| readOnlyEndField = type.getAddressField("readonly_end"); |
| readWriteBottomField = type.getAddressField("readwrite_bottom"); |
| readWriteEndField = type.getAddressField("readwrite_end"); |
| roSpaceField = type.getAddressField("_ro_space"); |
| rwSpaceField = type.getAddressField("_rw_space"); |
| } |
| |
| public boolean isSharingEnabled() { |
| return VM.getVM().isSharingEnabled(); |
| } |
| |
| // NEEDS_CLEANUP |
| public CompactingPermGenGen(Address addr) { |
| super(addr); |
| } |
| |
| public OffsetTableContigSpace roSpace() { |
| return newOffsetTableContigSpace(roSpaceField.getValue(addr)); |
| } |
| |
| public OffsetTableContigSpace rwSpace() { |
| return newOffsetTableContigSpace(rwSpaceField.getValue(addr)); |
| } |
| |
| public String name() { |
| return "compacting permanent generation"; |
| } |
| |
| public static Address unsharedBottom() { |
| return unsharedBottomField.getValue(); |
| } |
| |
| public static Address unsharedEnd() { |
| return unsharedEndField.getValue(); |
| } |
| |
| public static Address sharedBottom() { |
| return sharedBottomField.getValue(); |
| } |
| |
| public static Address sharedEnd() { |
| return sharedEndField.getValue(); |
| } |
| |
| public static Address readOnlyBottom() { |
| return readOnlyBottomField.getValue(); |
| } |
| |
| public static Address readOnlyEnd() { |
| return readOnlyEndField.getValue(); |
| } |
| |
| public static Address readWriteBottom() { |
| return readWriteBottomField.getValue(); |
| } |
| |
| public static Address readWriteEnd() { |
| return readWriteEndField.getValue(); |
| } |
| |
| public static boolean isShared(Address p) { |
| return sharedBottom().lessThanOrEqual(p) && sharedEnd().greaterThan(p); |
| } |
| |
| public static boolean isSharedReadOnly(Address p) { |
| return readOnlyBottom().lessThanOrEqual(p) && readOnlyEnd().greaterThan(p); |
| } |
| |
| public static boolean isSharedReadWrite(Address p) { |
| return readWriteBottom().lessThanOrEqual(p) && readWriteEnd().greaterThan(p); |
| } |
| |
| public boolean isIn(Address p) { |
| return unsharedBottom().lessThanOrEqual(p) && sharedEnd().greaterThan(p); |
| } |
| |
| public void spaceIterate(SpaceClosure blk, boolean usedOnly) { |
| super.spaceIterate(blk, usedOnly); |
| if (isSharingEnabled()) { |
| blk.doSpace(roSpace()); |
| blk.doSpace(rwSpace()); |
| } |
| } |
| |
| public void printOn(PrintStream tty) { |
| tty.print(" perm"); |
| theSpace().printOn(tty); |
| if (isSharingEnabled()) { |
| tty.print(" ro space: "); |
| roSpace().printOn(tty); |
| tty.print(", rw space: "); |
| rwSpace().printOn(tty); |
| } |
| } |
| |
| private OffsetTableContigSpace newOffsetTableContigSpace(Address addr) { |
| return (OffsetTableContigSpace) VMObjectFactory.newObject( |
| OffsetTableContigSpace.class, addr); |
| } |
| } |