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