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Date: Mon, 17 Sep 2012 09:27:40 -0400
From: Charles Wilson <cygwin AT cwilson DOT fastmail DOT fm>
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Subject: Re: Win PTY library.
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On 9/17/2012 7:03 AM, Daniel Colascione wrote:
> On 9/15/2012 9:21 AM, Christopher Faylor wrote:
>> On Sat, Sep 15, 2012 at 12:15:49PM -0400, Earnie Boyd wrote:
>>> I just discovered https://github.com/rprichard/winpty and thought
>>> Cygwin users and developers may be interested.  The license is MIT
>>> style.
>>
>> Looks interesting.  I've had something similar sitting around in my
>> Cygwin sandbox for a while.  It would be nice to have a real console-based
>> pty implementation.
> 
> Unfortunately, this program works by polling and scraping a hidden console
> window. Any approach of this type will lose data. (No, you can't synchronize
> your scraping by using console accessibility APIs because conhost calls out into
> accessibility with its locks held, and if you try to read the console buffer in
> this context, you deadlock.)

Well, that's exactly what Console2 does, and it works pretty well. I've
never seen any "missing" data when using it. I don't know what they're
doing to work around the deadlock issue, but whatever it is it works.

--
Chuck



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