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/*
* Copyright (c) 2005, 2018, 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 nsk.share.gc;
public class CircularLinkedList {
private int objectSize;
private LinkedMemoryObject root;
/**
* Create empty circular linked list.
*
* @param objectSize size of each node in the list
*/
public CircularLinkedList(int objectSize) {
this.objectSize = objectSize;
}
/**
* Insert new node in the list.
*/
public void grow() {
LinkedMemoryObject newnode = new LinkedMemoryObject(objectSize);
if (root == null){
root = newnode;
root.setNext(root);
root.setPrev(root);
} else {
newnode.setNext(root.getNext());
root.getNext().setPrev(newnode);
root.setNext(newnode);
newnode.setPrev(root);
}
}
/**
* Get length of the list.
*
* @return length
*/
public int getLength() {
return Memory.getListLength(root);
}
/**
* Get length of another list.
*
* @param list another list
* @return length of list
*/
public int getLength(CircularLinkedList list) {
return Memory.getListLength(list.root);
}
}
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