Re: assert or execption case program hang in multi thread

[Denis Koroskin]

On Sat, 21 Feb 2009 10:38:40 +0300, liyu <yunw...@msn.com> wrote:

code as below, assert can't terminate the program when main thread is running, is it a bug or i miss something?

import tango.core.Thread;
void test()
{
        while(1) {
                assert(false);
                //throw new Exception("test");
        }
}

void main() {
        auto thread = new Thread(&test);
        thread.start();

//if i remove the 3 lines below, then every thing work as expected

        while(1) {
                Thread.sleep(100);      }

}

I believe it is an expected behaviour. You second thread (which you create 
explicitly) is throwing an exception and thus gets terminated.
You main thread, however, continues to live. What you call 'hang' is your code 
which sleeps in an infinite loop:

while(1) {
   Thread.sleep(100);
}

Try putting some stuff into in (like, Stdout('!');) and you'll see that your 
thread didn't hang, it works perfectly.

If you remove the while (1) { Thread.sleep(100); }, your main thread quickly 
reachs the end of the main() and also gets terminated.

Your program finishs its execution when *all* your threads stop.