Subject: Re: Setting termios VMIN > 0 and VTIME > 0 on non blocking file
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
References: <9e4c6428-59de-df07-9e33-44ba95d5497f@gmail.com>
 <5be321d9-10c2-0853-b716-2abd10a4db3a@SystematicSw.ab.ca>
From: Norton Allen <allen@huarp.harvard.edu>
Message-ID: <da57d6cd-b048-8906-1346-d62a5e519d86@huarp.harvard.edu>
Date: Wed, 11 Mar 2020 21:01:34 -0400
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On 3/11/2020 5:55 PM, Brian Inglis wrote:
> VMIN > 0 || VTIME > 0 implies blocking; O_NONBLOCK implies SIGIO delivery; see:

While I agree with everything else you said there, I don't believe 
either of these are true, unless by 'implies' you mean that's how you 
usually do it. I have done a lot of work with non-zero VMIN and/or VTIME 
in non-blocking situations, and I've done non-blocking with different 
approaches to delivery.

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Norton Allen (he/him/his)
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Harvard University School of Engineering and Applied Sciences
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