Re: Patch request to qt 5.9.4 (Re: [ANNOUNCEMENT] Qt 5.9.4)

[Mark Geisert <mark at maxrnd dot com>]

Corinna Vinschen wrote:
> 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.
> > >
> > > with the above patch ()
> > > qt_safe_socket(PF_UNIX, SOCK_STREAM, 0))
> > > gnuplot can connect with gnuplot_qt.
> > >
> > > Perhaps qt with O_NONBLOCK is some wrong with process connection.
> >
> > Hi Tatsuro,
> > For the record, what Enrico supplied is what we'd call an STC, a Simple Test
> > Case.  Unfortunately his STC dealt with select() on a named pipe.
> >
> > 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.

Thank you Corinna for the correction.  That should make the strace output more 
understandable :-).

..mark


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