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Killing the master process may lead to the worker dying on its
own (as designed); before kill(1) has had an opportunity to send
the second kill(2) syscall on the worker process.
Killing the worker before the master might also lead to a
needless respawn, so merely kill the master and let the worker
follow it in death.
This race condition occasionally caused test failures on slow,
uniprocessor hardware.
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These should be made executable for ease-of-understanding and
consistency, regardless of whether we actually execute them.
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expr on OpenBSD uses a basic regular expression (according to
re_format(7)), which doesn't support +, only *.
Acked-by: Eric Wong <normalperson@yhbt.net>
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While we've always unlinked dead sockets from nuked/leftover
processes, blindly unlinking them can cause unnecessary failures
when an active process is already listening on them. We now
make a simple connect(2) check to ensure the socket is not in
use before unlinking it.
Thanks to Jordan Ritter for the detailed bug report leading to
this fix.
ref: http://mid.gmane.org/8D95A44B-A098-43BE-B532-7D74BD957F31@darkridge.com
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