DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:cc:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=j9Quh/O8sEyi0S26WzmuMRIpjdDrBLHZFeobajnKj2NeNQdeU/oOQ
	DJTiYsQFgM2lCRqbY6sfYCkVlyWOqx40zeM1TcXqtoOUxSW7Kd7Yc/HK9mMGPtcb
	7FymbQJ27Inhmvx+E/KbhMPSXFT068nNydn2VuuKRz/EhOG44iBBUU=
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
Date: Mon, 11 Mar 2019 10:45:03 +0100
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: Mark Geisert <mark@maxrnd.com>
Cc: cygwin@cygwin.com
Subject: Re: Patch request to qt 5.9.4 (Re: [ANNOUNCEMENT] Qt 5.9.4)
Message-ID: <20190311094503.GC3785@calimero.vinschen.de>
Reply-To: cygwin@cygwin.com
Mail-Followup-To: Mark Geisert <mark@maxrnd.com>, cygwin@cygwin.com
References: <1439412702.1866573.1551653028041.JavaMail.yahoo.ref@mail.yahoo.co.jp> <1439412702.1866573.1551653028041.JavaMail.yahoo@mail.yahoo.co.jp> <0faa5fb55a0af4803fcdff786dba8be440355609.camel@cygwin.com> <2014394607.770377.1552264089735.JavaMail.yahoo@mail.yahoo.co.jp> <72f4ecd86329b97d1c3cc1b796bf9393d02228f0.camel@cygwin.com> <881759885.934635.1552275216926.JavaMail.yahoo@mail.yahoo.co.jp> <30cae96a-7c70-5634-85ce-3fe6b36a7d21@maxrnd.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;	protocol="application/pgp-signature"; boundary="h1Kgj0J7YauQlxie"
Content-Disposition: inline
In-Reply-To: <30cae96a-7c70-5634-85ce-3fe6b36a7d21@maxrnd.com>
User-Agent: Mutt/1.11.3 (2019-02-01)

--h1Kgj0J7YauQlxie
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Mar 11 00:21, Mark Geisert wrote:
> Tatsuro MATSUOKA wrote:
> > [...]
> > without the above patch ()
> > qt_safe_socket(PF_UNIX, SOCK_STREAM, 0, O_NONBLOCK)))
> > gnuplot cannot connect with gnuplot_qt.
> >=20
> > with the above patch ()
> > qt_safe_socket(PF_UNIX, SOCK_STREAM, 0))
> > gnuplot can connect with gnuplot_qt.
> >=20
> > Perhaps qt with O_NONBLOCK is some wrong with process connection.
>=20
> Hi Tatsuro,
> For the record, what Enrico supplied is what we'd call an STC, a Simple T=
est
> Case.  Unfortunately his STC dealt with select() on a named pipe.
>=20
> Your gnuplot issue has to do with "Unix sockets", a form of IPC between
> processes.  Cygwin uses Windows named pipes to implement "Unix sockets" on
> Windows.

No, wait!  While there is code in Cygwin which is supposed to use
Windows named pipes to implement AF_UNIX sockets at one point, thos
code is far from being complete.

As yet, Cygwin uses loopback IPv4 sockets to implement AF_UNIX sockets.


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

--h1Kgj0J7YauQlxie
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=+Xbq
-----END PGP SIGNATURE-----

--h1Kgj0J7YauQlxie--