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/*
* Copyright 2003 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.gc_implementation.parallelScavenge;
import java.io.*;
import java.util.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.gc_implementation.shared.*;
import sun.jvm.hotspot.memory.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.types.*;
public class PSYoungGen extends VMObject {
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("PSYoungGen");
edenSpaceField = type.getAddressField("_eden_space");
fromSpaceField = type.getAddressField("_from_space");
toSpaceField = type.getAddressField("_to_space");
}
public PSYoungGen(Address addr) {
super(addr);
}
// Fields
private static AddressField edenSpaceField;
private static AddressField fromSpaceField;
private static AddressField toSpaceField;
// Accessors
public MutableSpace edenSpace() {
return (MutableSpace) VMObjectFactory.newObject(MutableSpace.class, edenSpaceField.getValue(addr));
}
public MutableSpace fromSpace() {
return (MutableSpace) VMObjectFactory.newObject(MutableSpace.class, fromSpaceField.getValue(addr));
}
public MutableSpace toSpace() {
return (MutableSpace) VMObjectFactory.newObject(MutableSpace.class, toSpaceField.getValue(addr));
}
public long capacity() {
return edenSpace().capacity() + fromSpace().capacity();
}
public long used() {
return edenSpace().used() + fromSpace().used();
}
public boolean isIn(Address a) {
if (edenSpace().contains(a)) {
return true;
}
if (fromSpace().contains(a)) {
return true;
}
return false;
}
public void printOn(PrintStream tty) {
tty.print("PSYoungGen [ ");
tty.print("eden = ");
edenSpace().printOn(tty);
tty.print(", from = ");
fromSpace().printOn(tty);
tty.print(", to = ");
toSpace().printOn(tty);
tty.print(" ] ");
}
}
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