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Date: Sat, 15 Feb 2003 04:34:05 +0000
From: Jamie Lokier <jamie@shareable.org>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Synchronous signal delivery..
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Davide Libenzi wrote:
> Many ( many ) times, when you're going to wait for events, you want to
> specify a maximum wait time ( reletive time ) and not an absolute time.
> This is how ppl think about "timeouts". Different beast is the absolute
> timer, that you can easily achieve with POSIX timers ( TIMER_ABSTIME ) and
> a sigfd() dropped inside an event retrieval interface.

Agreed, both interfaces are useful.  You see that epoll_wait is
optimised for one in particular though.

Curiously.  I'll probably continue to use a calculated relative
timeout instead of using a POSIX timer, as the overhead of setting up
and tearing down the latter is more system calls which we still like
to avoid if it's not hard.

-- Jamie
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