Re: Catch signals in GDBserver running on windows under cygwin

[Christophe PLANAT <christophe dot planat at st dot com>]

"drow/OU=internet/DD.RFC-822=drow"@mvista.com@harley wrote:
> 
> On Tue, May 28, 2002 at 09:22:20AM +0200, Christophe PLANAT wrote:
> > "drow/OU=internet/DD.RFC-822=drow"@mvista.com@harley wrote:
> > >
> > > On Mon, May 27, 2002 at 05:48:37PM +0200, Christophe PLANAT wrote:
> > > > Hi all,
> > > >
> > > > I am using GDBserver running on windows under CYGWIN (GDB is running on
> > > > the other side).
> > >
> > > Curious - what version of gdbserver?  I don't know of any FSF version that
> > > supported cygwin.
> >
> > But it works well. Windows NT + layer of cygwin Posix emulation dll
> > (1.3.5) and gcc 2.95.3-5 (cygwin special) running on the top, for GDB
> > and GDBServer 5.0 compilation. The 2 win32 runtime run correctly.
> 
> But gdbserver 5.0 wouldn't build on Cygwin... did the Cygwin people
> include their own version?
> 
> >
> > I've heard that some difficulties exist to catch signals thru cygwin
> > layer and that the classical signal(), raise() ... primitives don't
> > "work" well but I don't have any info about it.
> >
> > >
> > > > When GDBServer is runnning (augmented of several debug printing) a DOS
> > > > window is open. If this DOS window is killed or closed (by using the
> > > > small cross in the upper right corner), I wish to catch the
> > > > corresponding signal and warn the GDB client that the server is down.
> > > >
> > > > How to catch such signals on Windows NT (or 98) ? I tried several
> > > > signal() on signals recognized on window (SIGABRT, ILL, INT, SEGV and
> > > > TERM) without any success.
> > >
> > > --
> > > Daniel Jacobowitz                           Carnegie Mellon University
> > > MontaVista Software                         Debian GNU/Linux Developer
> >
> > --
> > ----------------------------------------------------------------------
> > | Christophe PLANAT                 | Embedded Systems Technology    |
> > | Email : Christophe.Planat@st.com  | STMicroelectronics             |
> > | Phone : +33 04 76 92 68 82        | 850, rue Jean-Monnet           |
> > | Fax   : +33 04 76 92 50 94        | BP 16 - 38921 Crolles - France |
> > ----------------------------------------------------------------------
> 
> --
> Daniel Jacobowitz                           Carnegie Mellon University
> MontaVista Software                         Debian GNU/Linux Developer


I succedded to implement a such mechanism described in MSDN library :

 - In the main() server.c, call SetConsoleCtrlHandler(my_handler, TRUE)
 - don't forget to include <windows.h>
 - implement   char WINAPI my_handler (DWORD dwCtrlType) and treat
signals...

I can catch CTRL-C, CTRL-BREAK and DOS windows closing.

Thanks for your interest to my request. Hope this will help somebody
	Christophe
-- 
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| Christophe PLANAT                 | Embedded Systems Technology    |
| Email : Christophe.Planat@st.com  | STMicroelectronics             |
| Phone : +33 04 76 92 68 82        | 850, rue Jean-Monnet           |
| Fax   : +33 04 76 92 50 94        | BP 16 - 38921 Crolles - France |
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