Hi carlos:
I think a nice way is to deploy a simple TimerTask inside any webapp to do this work. You could use anything like the following to help you:
import java.util.*;
public class MemoryWatchDog extends TimerTask{private static Timer currentTimer = null;
public static void startTimer() {
if(currentTimer != null)
return;
int seconds = 60;
Timer timer = new Timer();
timer.scheduleAtFixedRate(new WatchDog(), 1, (seconds * 1000));
currentTimer = timer;
}
} public static void stopTimer() {
if(currentTimer == null)
return;
currentTimer.cancel();
currentTimer = null;
} private WatchDog() {
// Just for hide the constructor
}public void run() {
int long lowMemory = 5242880; // 5Mb
if(Runtime.getRuntime().freeMemory() <= lowMemory){
// Using Jakarta Commons-Email to do the hard work...
SimpleEmail email = new SimpleEmail();
email.setHostName("mail.myserver.com");
email.addTo("[EMAIL PROTECTED]","John Doe");
email.setFrom("[EMAIL PROTECTED]", "Tomcat");
email.setSubject("Warning!!!");
email.setMsg("Look at me! I won't have enough memory in few seconds!!!"
+ "\n Free memory (bytes): "
+ Runtime.getRuntime().freeMemory());
email.send();
}
}
}
[]'s Ronaldo Arrudas [EMAIL PROTECTED]
Carlos Rule wrote:
Hello all, newbie here.
Does anyone know if there is a reliable way of setting up an alert to tell
me whenever the Tomcat (5.0.25) process reaches a certain level of memory
usage?
Many thanks!
Carlos
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