DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=rc0USeRwXA51MT9e
	BHz6zPWDhHhnLukoB2+UnHlH5ycXcR/bHljc5E8+WwkCSJBrvbc3TN6UH0jPFYvr
	oIkj6IZAiR33cZskYOE3w0YQYvw4q5DxuvK1v+A2SuzqPxO5v/rfSS9xk9E+6FhE
	qeBNez+Jh/9W9gfWY5JykmAt07M=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Subject: Re: Windows locks up when pressing Ctrl+S while native process writes to terminal
To: cygwin AT cygwin DOT com
References: <327d-5645b680-191-fbe9680 AT 109991231>
From: Thomas Wolff <towo AT towo DOT net>
Message-ID: <565214E5.7030507@towo.net>
Date: Sun, 22 Nov 2015 20:17:57 +0100
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0
MIME-Version: 1.0
In-Reply-To: <327d-5645b680-191-fbe9680@109991231>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit


> Hello,
>
> I found a consistent bug that happens every time:
> ...
> - Press Ctrl+S to stop the output in the terminal
>
> Bug #1: It's not possible to unfreeze the output in the terminal with Ctrl+Q. It just stays "stuck"
I confirm this effect and you don't need a fat application to 
demonstrate it. With this Windows cmd script loop.bat:
@echo off
set n=0
:loop
echo %n%
echo %n% >> .log
set /A n=%n% + 1
ping 127.0.0.1 -n 2 > nul
goto loop

run it: ./loop.bat, then use ^S; the script will actually continue to 
run but will not show any more output in a pty-based terminal (works in 
Cygwin console).

> Bug #2: After a few seconds, the disk starts to trash. ...
Thrashing? Might be caused by the apparently-stopped application going 
into some endless-loop activity.

Thomas

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple