From: Jonathan Larmour <jlarmour@redhat.com>
To: "Boris V. Guzhov" <borg@int.spb.ru>
Cc: ecos-discuss@sourceware.cygnus.com
Subject: Re: [ECOS] select() and signal's
Date: Mon, 23 Apr 2001 12:32:00 -0000 [thread overview]
Message-ID: <3AE48362.4B5C2E38@redhat.com> (raw)
In-Reply-To: <006401c0ca63$1bd96920$7601a8c0@borg>
"Boris V. Guzhov" wrote:
>
> I tried and it works. But there are some questions.
> Now pthread_kill() interrupts not only select(), but
> also sem_wait().
> As far as I know, the POSIX semaphores are a general and
> exclusive synchronization mechanism with a signal-cathing
> function. And their functions should not be interrupted by
> signals.
> In Linux inplementation pthread_kill() not interrupts
> the sem_wait().
>
> That's right?
My POSIX spec says explicitly "The sem_wait() function shall be
interruptible by the delivery of a signal." So if signals on Linux never
interrupt it, it sounds like Linux is wrong(!)
On doing so, sem_wait should return -1 and set errno to EINTR.
Jifl
--
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
prev parent reply other threads:[~2001-04-23 12:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-20 5:42 Boris V. Guzhov
2001-04-20 6:57 ` Jonathan Larmour
2001-04-20 8:13 ` Boris V. Guzhov
2001-04-20 13:11 ` Jonathan Larmour
2001-04-21 5:52 ` Boris V. Guzhov
2001-04-21 6:02 ` Boris V. Guzhov
2001-04-23 12:32 ` Jonathan Larmour [this message]
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