I actually track my connected users with this code:
public class MySessionManager{
public static Set <String> connecteds;
/** Creates a new instance of MySessionManager */
public MySessionManager() {
connecteds = new java.util.HashSet();
and i use this method to add an entry for each new session created
public void valueBound(HttpSessionBindingEvent httpSessionBindingEvent) {
connectedPlayers.add((String)httpSessionBindingEvent.getSession().getAttribute("login"));
}
I'm new to J2EE/servlet and i have not tested with multiple users, and
i was not thinking about the concurrency.
Do i need to instantiate my set with something like:
Collections.synchronizedSet( new java.util.HashSet())
Or is it better to use directly the old hashtable ?
Best regards.
Quoting Glen Vermeylen <[EMAIL PROTECTED]>:
We use Tomcat 5.5.20.
I actually have no synchronization in place whatsoever. I will change to
hashtable and see if it solves the problem.
Thank you.
2007/3/7, Caldarale, Charles R <[EMAIL PROTECTED]>:
From: Glen Vermeylen [mailto:[EMAIL PROTECTED]
Subject: Retrieve list of all sessions
I've created a management screen which lists all currently
logged in users. This list is kept as a hashmap and is kept
"in sync" with reality in the following way:
A HashMap is unsynchronized; does your logic provide the necessary
synchronization for insertions, deletions, *and* retrievals? If not,
switching to a HashTable might resolve your problem.
Or then again, it might just be a bug, but you didn't tell us the
version of Tomcat you're using, so searching bugzilla would be rather
tedious.
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
MATERIAL and is thus for use only by the intended recipient. If you
received this in error, please contact the sender and delete the e-mail
and its attachments from all computers.
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
----------------------------------------------------
Ce message a ete envoye par le serveur IMP de l'EMA.
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
