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guohualee
Thread Memory Usage in java
2 Answer(s)      6 years and 8 months ago
Posted in : Java Beginners



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May 8, 2008 at 6:28 PM


hi friend,

import java.io.*;
import java.util.*;
import java.util.logging.Logger;

public class ThreadMemory
implements Runnable{
public static Logger logger = Logger.getLogger(ThreadMemory.class.getName());

protected static Thread mainThread;
protected static int sleepSec;

public ThreadMemory() {
this(60);
}
public ThreadMemory(int sleepSec)
{
this.sleepSec = sleepSec;
}

public static boolean isMonitorActive() {
if(mainThread!=null)
return mainThread.isAlive();
else
return false;
}

public void startMonitor()
{
mainThread = new Thread(this, this.getClass().getName());
mainThread.start();
}

public void run(){
logger.info("Started with polling = " + String.valueOf(sleepSec) + " sec");
while(true){
logger.info("Free mem: " + String.valueOf(Runtime.getRuntime().freeMemory()));
logger.info("Tot mem: " + String.valueOf(Runtime.getRuntime().totalMemory()));
logger.info("Thread n: " + String.valueOf(Thread.currentThread().activeCount()));
logger.info("");

// Sleeps (polling time):
try {
Thread.currentThread().sleep(sleepSec*1000);

} catch (InterruptedException e){
System.out.println("errer threas sleeping"+ e);
}
}
} // end run

public static void main(String args[]){

ThreadMemory thread = new ThreadMemory();

System.out.println("Welcome roseindia");

}

}

---------------------------

read for more information,

http://www.roseindia.net/java/thread/thread-creation.shtml



May 9, 2008 at 12:26 PM


but,if I use G++ tools to compile a c++ program in a java thread,

as:Runtime.getRuntime().exe("g++ -o...*.cpp...");

Can this method work well for compute c++ program's memeory usage?


In other words,i want to compute a C++_program's memory usage in java,

Can I do it?


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