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Subject:	Re: signals and read blocking - EINTR
From:	Jim Easton <jim AT cs DOT ualberta DOT ca>
To:	cygwin AT cygwin DOT com
Date:	Tue, 1 Nov 2005 02:40:00 -0700 (MST)
CC:	Jim Easton <jim AT cs DOT ualberta DOT ca>
Message-Id:	<S576857AbVKAJkB/20051101094004Z+331@sunkay.cs.ualberta.ca>
X-IsSubscribed:	yes

Hi,

Christopher Faylor wrote:
> On Mon, Oct 31, 2005 at 08:49:30PM -0700, Jim Easton wrote:
> >I'm wondering what am I missing?  Is there a flag in sigaction
> >or something else that I could be setting?
> 
> Yes.  SA_RESTART is the flag.

and then Samuel Thibault wrote:
> No: he wants to be _interrupted_. SA_RESTART is used for _not_ being
> interrupted, i.e. the system restarts the system call itself.

Thank you both for your help.  It's quite true that I do want to be
interrupted and SA_RESTART is to prevent it.

However it never occurred to me on linux and cygwin the flag would
be defaulted set.  Things started to work much better when I
deliberately unset the flag.

It seems to be working quite nicely on cygwin now but I'm now having
some trouble with the "saved" value of the timer which I haven't
sorted out yet.  I don't know that it's not my bug.

Thanks for the prod.

	Jim




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