Another pipe-related problem?
Henry S. Thompson
ht@inf.ed.ac.uk
Tue Nov 9 14:47:26 GMT 2021
[private reply -- it's not exactly a private repo, but it's really not
ready for prime-time with users expecting to be able to raise issues
etc.]
Ken Brown writes:
> ...
> I was aware that the bitbucket repo didn't exist, because I tried to get the
> sources there. But I didn't know about the fork. Please point me to it, or
> just make a tarball available to me somehow.
https://foss.heptapod.net/xemacs
>> ...
> I'll have to reproduce the hang myself in order to test this (or
> maybe you could test it), but I now have a new guess: If the read
> call above keeps failing with EINTR, then we're in an infinite loop.
> This could happen because of the following code in
> fhandler_pipe::raw_read:
>
> DWORD waitret = cygwait (read_mtx, timeout);
> switch (waitret)
> {
> case WAIT_OBJECT_0:
> break;
> case WAIT_TIMEOUT:
> set_errno (EAGAIN);
> len = (size_t) -1;
> return;
> default:
> set_errno (EINTR);
> len = (size_t) -1;
> return;
> }
>
Let's wait and see what Takashi says -- I see from github blame that
was introduced between 3.2 and 3.3.0, so certainly _could_ be the
culprit. I've never tried to build my own Cygwin...
Thanks,
ht
--
Henry S. Thompson, School of Informatics, University of Edinburgh
10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
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