From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from conssluserg-05.nifty.com (conssluserg-05.nifty.com [210.131.2.90]) by sourceware.org (Postfix) with ESMTPS id E5CF63857C5A for ; Tue, 28 Jul 2020 16:39:15 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org E5CF63857C5A Received: from Express5800-S70 (v038192.dynamic.ppp.asahi-net.or.jp [124.155.38.192]) (authenticated) by conssluserg-05.nifty.com with ESMTP id 06SGcfZR023657 for ; Wed, 29 Jul 2020 01:38:41 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conssluserg-05.nifty.com 06SGcfZR023657 X-Nifty-SrcIP: [124.155.38.192] Date: Wed, 29 Jul 2020 01:38:48 +0900 From: Takashi Yano To: cygwin@cygwin.com Subject: Re: stty -cooked not usable since cygwin-3.1.1-1 Message-Id: <20200729013848.cf6d4d99464e92d92d346029@nifty.ne.jp> In-Reply-To: <1ea4e90c-7075-39e8-a518-40bc764a5237@bahnhof.se> References: <20200113200152.5243a304d481677c61c12450@nifty.ne.jp> <12d7cb6e-b900-6780-1d1c-80ed84cc82d5@bahnhof.se> <1ea4e90c-7075-39e8-a518-40bc764a5237@bahnhof.se> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, RCVD_IN_BARRACUDACENTRAL, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2020 16:39:19 -0000 On Tue, 28 Jul 2020 15:56:54 +0200 Rabbe Fogelholm wrote: > 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! Solution 1: Redesign your java program using JNA with kbhit()/getch() instead of System.in.available()/System.in.read(). Solution 2: Add SetConsoleMode() call with ENABLE_LINE_INPUT flag cleared using JNA. Solution 3: Use a wrappwer instead of stty such as: #include #include #include #include #include #include void *fwd(void *param) { FILE *f = (FILE *) param; char buf[128]; int len; while (1) { if ((len = read(0, buf, sizeof(buf))) <= 0) break; if (write(fileno(f), buf, len) < len) break; } return NULL; } int main(int argc, char *argv[]) { FILE *f; int i; pthread_t th; struct termios t, t_orig; char cmd[1024] = {0, }; if (argc < 2) return 0; for (i = 1; i < argc && strlen(cmd)+strlen(argv[i]) < sizeof(cmd)-2; i++) { sprintf(cmd + strlen(cmd), (i>1)?" %s":"%s", argv[i]); } f = popen(cmd, "w"); tcgetattr(0, &t_orig); t = t_orig; cfmakeraw(&t); tcsetattr(0, TCSANOW, &t); pthread_create(&th, NULL, fwd, f); wait(NULL); tcsetattr(0, TCSANOW, &t_orig); pclose(f); return 0; } -- Takashi Yano