From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/13206
Path: news.gmane.org!.POSTED!not-for-mail
From: Rich Felker <dalias@libc.org>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: Compile-time flag to enable optional EINTR's?
Date: Fri, 7 Sep 2018 09:15:08 -0400
Message-ID: <20180907131508.GK1878@brightrain.aerifal.cx>
References: <CABpewhEpRqwDgfA4PdtYr8Rmx7z+JWJ9nqf=Bin+fE3HsWsPRg@mail.gmail.com>
 <20180907021657.GJ1878@brightrain.aerifal.cx>
 <CABpewhFEqn1H7hLxxp53beNwzeAPhsu6n-C9gJnThYcLkc4wcw@mail.gmail.com>
Reply-To: musl@lists.openwall.com
NNTP-Posting-Host: blaine.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: blaine.gmane.org 1536326001 21786 195.159.176.226 (7 Sep 2018 13:13:21 GMT)
X-Complaints-To: usenet@blaine.gmane.org
NNTP-Posting-Date: Fri, 7 Sep 2018 13:13:21 +0000 (UTC)
User-Agent: Mutt/1.5.21 (2010-09-15)
To: musl@lists.openwall.com
Original-X-From: musl-return-13222-gllmg-musl=m.gmane.org@lists.openwall.com Fri Sep 07 15:13:17 2018
Return-path: <musl-return-13222-gllmg-musl=m.gmane.org@lists.openwall.com>
Envelope-to: gllmg-musl@m.gmane.org
Original-Received: from mother.openwall.net ([195.42.179.200])
	by blaine.gmane.org with smtp (Exim 4.84_2)
	(envelope-from <musl-return-13222-gllmg-musl=m.gmane.org@lists.openwall.com>)
	id 1fyGZY-0005Wa-6f
	for gllmg-musl@m.gmane.org; Fri, 07 Sep 2018 15:13:16 +0200
Original-Received: (qmail 3350 invoked by uid 550); 7 Sep 2018 13:15:21 -0000
Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm
Precedence: bulk
List-Post: <mailto:musl@lists.openwall.com>
List-Help: <mailto:musl-help@lists.openwall.com>
List-Unsubscribe: <mailto:musl-unsubscribe@lists.openwall.com>
List-Subscribe: <mailto:musl-subscribe@lists.openwall.com>
List-ID: <musl.lists.openwall.com>
Original-Received: (qmail 3332 invoked from network); 7 Sep 2018 13:15:20 -0000
Content-Disposition: inline
In-Reply-To: <CABpewhFEqn1H7hLxxp53beNwzeAPhsu6n-C9gJnThYcLkc4wcw@mail.gmail.com>
Original-Sender: Rich Felker <dalias@aerifal.cx>
Xref: news.gmane.org gmane.linux.lib.musl.general:13206
Archived-At: <http://permalink.gmane.org/gmane.linux.lib.musl.general/13206>

On Fri, Sep 07, 2018 at 12:09:33AM -0400, Joseph C. Sible wrote:
> > Can you discuss what you're trying to use EINTR for here?
> 
> It's for a Python program with several threads that are often waiting
> on various locks, events, etc., all implemented by Python in terms of
> POSIX semaphores.

I seem to recall Python's testsuite having a test asserting that POSIX
semaphores respond to interrupting signals, so it sounds like the
underlying problem is that Python is implementing some of its
primitives with a non-portable assumption. I'll take a look or see if
someone else from the community wants to.

Rich