From: Rabbe Fogelholm <rabbe@bahnhof.se>
To: cygwin@cygwin.com
Subject: Re: stty -cooked not usable since cygwin-3.1.1-1
Date: Mon, 13 Jan 2020 11:36:00 -0000 [thread overview]
Message-ID: <12d7cb6e-b900-6780-1d1c-80ed84cc82d5@bahnhof.se> (raw)
In-Reply-To: <20200113200152.5243a304d481677c61c12450@nifty.ne.jp>
Takashi Yano wrote:
> On Mon, 13 Jan 2020 11:52:43 +0100
> Rabbe Fogelholm wrote:
>> I am running a console Java program that is started from a shellscript
>> wrapper. Before invoking Java the wrapper calls `stty -cooked'. The Java
>> program polls the keyboard using System.in.available() and reads
>> characters immediately using System.in.read(), without waiting for the
>> Enter key to be pressed.
>>
>> This way of combining `stty -cooked' and Java has stopped working since
>> version 3.1.1-1 of the Cygwin package. The Java thread that reads the
>> keyboard hangs until Enter is pressed, which is not desirable.
>>
>> I had to downgrade to version 3.0.7-1 to resolve the problem.
>>
>> Versioning information:
>>
>> java version "1.8.0_202"
>> Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
>> Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)
>>
>> OS Name: Microsoft Windows 10 Pro
>> Version: 10.0.17763 Build 17763
>> System Type: x64-based PC
>>
>> See also the enclosed cygcheck.out.
>>
>> To demonstrate the issue I enclose a small Java program that should be
>> able to read single keystrokes when `stty -cooked' is in effect.
>
> Does your java program work in command prompt? cygwin 3.1.x uses
> pseudo console, so the native (non cygwin) program works as if it
> is executed in command prompt.
>
With cygwin 3.1.x I can't find a way to make my program work.
When running from within a Cygwin64 terminal the `stty -cooked' command
terminates with exit code 0, but the Java program behaves just as if
`stty -cooked' is not in effect: It does not handle single keystrokes
immediately.
When running from a Windows command prompt I can execute the stty
program as \cygwin64\bin\stty. However, when given the '-cooked'
argument it complains:
/usr/bin/stty: 'standard input': unable to perform all requested operations
- and here as well the Java program behaves as if `stty -cooked' is not
in effect.
--Rabbe
--
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next prev parent reply other threads:[~2020-01-13 11:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-13 10:53 Rabbe Fogelholm
2020-01-13 11:02 ` Takashi Yano
2020-01-13 11:36 ` Rabbe Fogelholm [this message]
2020-07-28 13:56 ` Rabbe Fogelholm
2020-07-28 16:38 ` Takashi Yano
2020-07-28 16:56 ` Thomas Wolff
2020-07-28 17:40 ` Takashi Yano
2020-07-28 19:51 ` Rabbe Fogelholm
2020-07-28 23:30 ` Thomas Wolff
2020-07-29 20:03 ` Rabbe Fogelholm
2020-07-31 6:52 ` Rabbe Fogelholm
2020-07-29 0:02 ` Takashi Yano
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