Re: PTY dies when master in parent process is closed.

[Takashi Yano <takashi dot yano at nifty dot ne dot jp>]

On Fri, 6 Mar 2015 20:07:10 +0900
Takashi Yano <takashi.yano@nifty.ne.jp> wrote:

> On Thu, 5 Mar 2015 14:58:39 +0100
> Corinna Vinschen <corinna-cygwin@cygwin.com> wrote:
> 
> > I applied a patch.  Please have a look.
> 
> I have tested the latest CVS version, and found
> a new problem.
> 
> With new CVS version, slave side can not detect
> closure of master.
> 
> Please use following Test Case 3. Test Case 3 is
> not terminated by itself with latest CVS.
> 
> It seems that the program is stopping at
> cygwait(input_available_event, time_to_wait)
> in fhandler_pty_slave::read().
> 
> I guess input_available_event should be set when
> the last valid master fd is closed.

For this problem, I have made a patch.

With this patch, it has been confirmed that the problems
in Test Case 1, 2 and 3 are fixed.

I am glad if this would be a help.

However, one matter to be concerned is irregular use of
PeekNamedPipe(). Maybe alternative means could be better
for detecting closure of all master fds.


-- 
Takashi Yano <takashi.yano@nifty.ne.jp>

Attachment: cygwin.patch.20150308
Description: Binary data

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