easiest and best way to make a server queue java
- by houlahan
i have a server at the moment which makes a new thread for every user connected but after about 6 people are on the server for more than 15 mins it tends to flop and give me java heap out of memory error i have 1 thread that checks with a mysql database every 30 seconds to see if any of the users currently logged on have any new messages. what would be the easiest way to implement a server queue?
this is the my main method for my server:
public class Server {
public static int MaxUsers = 1000;
//public static PrintStream[] sessions = new PrintStream[MaxUsers];
public static ObjectOutputStream[] sessions = new ObjectOutputStream[MaxUsers];
public static ObjectInputStream[] ois = new ObjectInputStream[MaxUsers];
private static int port = 6283;
public static Connection conn;
static Toolkit toolkit;
static Timer timer;
public static void main(String[] args) {
try {
conn = (Connection) Mysql.getConnection();
} catch (Exception ex) {
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("****************************************************");
System.out.println("* *");
System.out.println("* Cloud Server *");
System.out.println("* ©2010 *");
System.out.println("* *");
System.out.println("* Luke Houlahan *");
System.out.println("* *");
System.out.println("* Server Online *");
System.out.println("* Listening On Port " + port + " *");
System.out.println("* *");
System.out.println("****************************************************");
System.out.println("");
mailChecker();
try {
int i;
ServerSocket s = new ServerSocket(port);
for (i = 0; i < MaxUsers; ++i) {
sessions[i] = null;
}
while (true) {
try {
Socket incoming = s.accept();
boolean found = false;
int numusers = 0;
int usernum = -1;
synchronized (sessions) {
for (i = 0; i < MaxUsers; ++i) {
if (sessions[i] == null) {
if (!found) {
sessions[i] = new ObjectOutputStream(incoming.getOutputStream());
ois[i]= new ObjectInputStream(incoming.getInputStream());
new SocketHandler(incoming, i).start();
found = true;
usernum = i;
}
} else {
numusers++;
}
}
if (!found) {
ObjectOutputStream temp = new ObjectOutputStream(incoming.getOutputStream());
Person tempperson = new Person();
tempperson.setFlagField(100);
temp.writeObject(tempperson);
temp.flush();
temp = null;
tempperson = null;
incoming.close();
} else {
}
}
} catch (IOException ex) {
System.out.println(1);
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
}
}
} catch (IOException ex) {
System.out.println(2);
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
}
}
public static void mailChecker() {
toolkit = Toolkit.getDefaultToolkit();
timer = new Timer();
timer.schedule(new mailCheck(), 0, 10 * 1000);
}
}
