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Subject: Re: Desperately missing a working "pselect()" or similar...
To: lkv@isg.de
Date: Mon, 8 Oct 2001 18:24:45 +0100 (BST)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox),
        linux-kernel@vger.kernel.org (Kernel Linux)
In-Reply-To: <3BC1DD17.EACD968@isg.de> from "lkv@isg.de" at Oct 08, 2001 07:06:31 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> > siglongjmp doesnt have to make any syscalls so intuitively I'd say it
> > ought to be more efficient
> 
> Are you sure? Doesn't sigsetjmp() call sigprocmask in order to obtain
> the current signal mask?

and intuition is a dangerouns thing. I didnt realise glibc didnt cache
the procmask
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