RE: [RFA] windows-nat.c: Enable processed input at startup

Pierre Muller
2010-04-26T15:47:42Z

> >> setting was global.
> > Of course I should close the handle as soon as I changed the
> >console mode.
> > What about this version?
> >
> >Pierre
> >
> >2010-04-26 Pierre Muller <muller@ics.u-strasbg.fr>
> >
> > * windows-nat.c (_initialize_windows_nat): Try to set
> > ENABLE_PROCESSED_INPUT for console mode if accessible.
>
> Ok with the minor comment changes below.
Did you mean something to change to the comments
inside the patch?

> I don't understand why this would be necessary for Cygwin but,

Did you try the example code I sent to gdb mailing list?
This executable does change the Console Mode of a Cygwin tty
and that change is kept after the program exits.
This is not the case for a usual Windows command prompt.
If you compile my program and run it.
./test
New console mode is 0x18
(interrupting this works for both Ctrl-C and Ctrl-Break)
but if you now run
gdb gdb
....
(gdb) set prompt top>

top> run
...
Try to hit Ctrl-C now, nothing happens
(exit using q)
Run again my test program with an argument:
./test 1
New console mode is 0x19
Do the same...
This time Ctrl-C works.

> if it is,
> then tcsetattr should be used.

From winsup/cygwin/fhanlde_console.cc
I suppose that I should use
tcsetattr (tcgetattr (h) | ISIG, h);
But what should the variable 'h' be
be initialized?

Pierre