Re: Adding a timeout to commands by wrapping + thread - suggestions?

Lew <>
Tue, 04 Sep 2007 08:34:02 -0400
Ingo R. Homann wrote:


note that my code was only an example to show the concept. In real world
applications, of course, you might encapsulate it like this (written in
my newsreader, so untested):

class MyProcess // no not implement Runnable!

  private Exception e;

  private Thread t;

  public void start() {
   t=new Thread(new Runnable(){
     public void run() {
      try {
       // do something that might throw an Exception
      } catch(Exception e) {

  public void join throws Exception {
    if(e!=null) {
      throw e;


Note that this is also only a "proof of concept" and there are many
things missing (such as catching the problem of joining an unstarted
Thread). You may also add many methods like isRunning, interrupt and so on.

For a second I though 'e' needed to be volatile, then I remembered that
Thread.start() and join() handle the synchronization and memory model visibility.


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