Mailing-List:	contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT sources DOT redhat DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT sources DOT redhat DOT com>
List-Help:	<mailto:cygwin-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-owner AT sources DOT redhat DOT com
Delivered-To:	mailing list cygwin AT sources DOT redhat DOT com
Message-ID:	<002901c0c833$d32553a0$3e8a42d8@hpcustomer>
From:	"Tim Baker" <dbaker AT direct DOT ca>
To:	<cygwin AT cygwin DOT com>
References:	<002101c0c82e$8206abe0$3e8a42d8 AT hpcustomer> <2352393414 DOT 20010418214818 AT logos-m DOT ru>
Subject:	Re: cygwin apps in pipe ignore ctrl+c
Date:	Wed, 18 Apr 2001 11:17:26 -0700
MIME-Version:	1.0
X-Priority:	3
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook Express 5.50.4522.1200
X-MimeOLE:	Produced By Microsoft MimeOLE V5.50.4522.1200

> TB> I have a console app MyApp which runs in a pipe. MyApp calls
> TB> CreateProcess() to launch OtherApp and later calls
> TB> GenerateConsoleCtrlEvent() to send Ctrl+C to OtherApp. When
> TB> OtherApp is non-Cygwin it is interrupted cleanly just as though
> TB> the user had typed Ctrl+C from in the DOS window. But when
> TB> OtherApp is a Cygwin application it ignores any number of
> TB> CTRL_C_EVENTs I send and continues running. So a Cygwin
> TB> app must be calling SetConsoleCtrlHandler() to intercept the
> TB> CTRL_C_EVENT but for some reason it is not behaving properly
> TB> when the Cygwin app is *running in a pipe*. (The Cygwin app IS
> TB> attached to a Win32 console window which is required for
> TB> GenterateConsoleCtrlEvent() to work.)
> 
> use kill() function to interrupt cygwin application. this is a normal
> unix way to do such things.


Sure, but I do not know if OtherApp is going to be a Cygwin app or not.
Sometimes it is not, so calling Cygwin's kill() might not be appropriate.
In any event, this bug effects typing Ctrl+C in a console window too.
When I run "gcc -pipe file.c" and CPP is running, I type Ctrl+C and
CPP does not die. I then type Ctrl+Alt+Del to see the running tasks
and GCC is gone but not CPP (CPP continues running then exits).

-- Tim Baker


--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple

- Raw text -