package org.litesoft.p2pchat;
import java.net.Socket;
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//
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/**
* @author Devin Smith and George Smith
* @version 0.4 04/06/13 Return if interrupted on wait() to allow PPM to clean up
* @version 0.3 02/02/02 Added IllegalArgument.ifNull for all public params that may not be null
* @version 0.2 01/28/02 Refactored and Added Licence
* @version 0.1 12/27/01 Initial Version
*/
public class PendingPeerLinkedList {
private PendingPeerNode zHead = null;
private PendingPeerNode zTail = null;
public PendingPeerLinkedList() {
}
public synchronized PendingPeerNode next() {
while (zHead == null) {
try {
wait();
}
catch (InterruptedException e) {
// PPM has asked us to stop. It will handle the null return value
return null;
}
}
PendingPeerNode retval = zHead;
zHead = zHead.advanceToNext();
if (zHead == null)
zTail = null;
return retval;
}
public synchronized void add(Socket pSocket, PeerInfo pInfo) {
IllegalArgument.ifNull("Info", pInfo);
add(new PendingPeerNode(pSocket, pInfo));
}
public synchronized void add(PendingPeerNode pPendingPeerNode) {
if (zHead == null)
zHead = zTail = pPendingPeerNode;
else
zTail = zTail.appendNode(pPendingPeerNode);
notifyAll();
}
}