in reply to Re: Why do my threads sometimes die silenty?
in thread Why do my threads sometimes die silenty?

There is at least one more way:

C:\test>perl -Mthreads -E"my $t = async { die "Foo" }->detach; say 'do
+ne'"
done

[download]

And I'm pretty sure I could come up with a few more.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

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Re^3: Why do my threads sometimes die silenty?
by ikegami (Patriarch) on Sep 21, 2011 at 21:09 UTC

    I'm pretty sure the OP meant the thread exited before the process terminated.

    Note that the above is not silent if the die has a chance to execute. (About 50% of the time on this machine.)

[reply]
[d/l]
      Note that the above is not silent if the die has a chance to execute.

      Yes, but it turns out that is exactly what he was doing. At least in his experiments:

      There are other ways. For example, there were a bunch of versions of perl (most of the 5.8.x series from memory) that (on Windows) silently exited if they ran "Out of memory!" never producing that error message. I had that happen a lot.

      Also, hard to demo since dave-the-m changed the regex engine from recursive to iterative, but previously running a pathological regex in a thread could run it out of C-stack and it would silently disappear. There aren't many things left in perl that consume stack any more, but I wouldn't mind betting that if we could find one, that the thread would still terminate silently.

      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]
        Recursive calling of special subs (AUTOLOAD, DESTROY) can eat up the C stack.
[reply]

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