From: Rabbe Fogelholm <rabbe@bahnhof.se>
To: cygwin@cygwin.com
Subject: Re: stty -cooked not usable since cygwin-3.1.1-1
Date: Tue, 28 Jul 2020 15:56:54 +0200 [thread overview]
Message-ID: <1ea4e90c-7075-39e8-a518-40bc764a5237@bahnhof.se> (raw)
In-Reply-To: <12d7cb6e-b900-6780-1d1c-80ed84cc82d5@bahnhof.se>
Rabbe Fogelholm wrote:
> 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.
Some time has passed; I am just curious if anyone may have found a
solution to the "stty -cooked" issue. With cygwin-3.0.* it was possible
to have a Java program act on single keystrokes, with cygwin-3.1 I don't
know how to do it. Any ideas welcome!
next prev parent reply other threads:[~2020-07-28 13:56 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
2020-07-28 13:56 ` Rabbe Fogelholm [this message]
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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