Because I've read more than "a mention". Specifically:

CAVEAT: The thread signalling capability provided by this module does not actually send signals via the OS. It emulates signals at the Perl-level such that signal handlers are called in the appropriate thread. For example, sending $thr->kill('STOP') does not actually suspend a thread (or the whole process), but does cause a $SIG{'STOP'} handler to be called in that thread (as illustrated above).

As such, signals that would normally not be appropriate to use in the kill() command (e.g., kill('KILL', $$)) are okay to use with the ->kill() method (again, as illustrated above).

Correspondingly, sending a signal to a thread does not disrupt the operation the thread is currently working on: The signal will be acted upon after the current operation has completed. For instance, if the thread is stuck on an I/O call, sending it a signal will not cause the I/O call to be interrupted such that the signal is acted up immediately.

The 'signals' provided by threads are little more than an inappropriately named, elaborate polling mechanism. Ill-conceived; badly implemented; mostly useless.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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.

In reply to Re^2: Perl 5.8.8 threads, clean exit by BrowserUk
in thread Perl 5.8.8 threads, clean exit by T_I

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