From owner-freebsd-java  Tue May 30 13: 6:44 2000
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From: Christophe Colle <christophe.colle@telenet.be>
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To: freebsd-java@freebsd.org
Subject: java_X version "1.1.8" stuck on BufferedReader.readLine
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Hi,

I have a problem with jdk 1.1.8 on FreeBSD.. Apparently when doing a
readLine on a BufferedReader-object all my threads hang :-(

Consider the follwing part of java-code:




import java.lang.*;
import java.io.*;

class Clock extends Thread {
    private Thread master;
    private long timeout;
    
    protected void sleepFor(long timeout) {
    master=Thread.currentThread();
    this.timeout=timeout;
    this.start();
    }

    protected void clear() {
	      this.interrupt();
	      this.stop();
    }

    public void run() {
    System.out.println("you should see mee running, but in jdk1.1.8 you don't see me :-(");
    try {
        this.sleep(timeout);
	    //you should see the following message, but you won't with jdb1.1.8 and freebsd
            System.out.println("timed out... interrupting master thread");
	        master.interrupt();
		} catch (InterruptedException e) {
		    System.out.println("I got terminated");
		        return;
			} catch (Exception e) {
			    e.printStackTrace();
			    }
    }
}

public class test {
    void loop() {
	 BufferedReader in=new BufferedReader(new InputStreamReader(System.in));

	 while (true) {
	     String str="";
	         boolean timedout=false;
		     Clock alarm=new Clock();
            try {
		alarm.sleepFor(1000);
			str=in.readLine();
				alarm.clear();
				    } catch (IOException e) {
				      if (Thread.interrupted()) {
					     timedout=true;
						    System.out.println("interrupt ....");
										  } else {
										        e.printStackTrace();
												    System.exit(99);
													}
													    }

													        if (timedout == false && str == null)
														   System.exit(0);
														       System.out.println("---  "+str);
        }
    }

    static public void main(String args[]) {
        new test().loop();
    }
}





When I run this on a solaris machine I see the following output (paced 
every second):
colle@olympus: java test
you should see mee running, but in jdk1.1.8 you don't see me :-(
timed out... interrupting master thread
interrupt ....
---  
you should see mee running, but in jdk1.1.8 you don't see me :-(
timed out... interrupting master thread
interrupt ....
---  
you should see mee running, but in jdk1.1.8 you don't see me :-(
timed out... interrupting master thread
interrupt ....
---  



When doing the same on a FreeBSD machine:
bash-2.03$ java -version
java_X version "1.1.8"
bash-2.03$ 
bash-2.03$ 
bash-2.03$ java test
^Cbash-2.03$ 

nothing ... it gets stuck :-(



^Cbash-2.03$ uname -a
FreeBSD portable.is.cool 3.4-RELEASE FreeBSD 3.4-RELEASE #2: Sun Feb 621:39:44 CET 2000 root@portable.is.cool:/old/src-cvs/src/sys/compile/PORTABLE  i386


What can I do to get this problem solved?

Thanks!

cc

---

you type win, but you lose

The Internet doesn't really need admins that are dumber than 
the ones we have already.
----

Christophe Colle

Telenet, Liersesteenweg 4, 2800 Mechelen, Belgium
    tel:+32(0)15.333.981
    mailto:christophe.colle@telenet.be
    http://krtkg1.rug.ac.be/~colle





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