Re: set filename to null string?

[Grant Edwards <grante at visi dot com>]

On Mon, Oct 25, 1999 at 11:33:37AM +1000, Andrew Cagney wrote:

> > How do you set a filename to the null string?
> > 
> > for example:
> > 
> >   (gdb) show remotelogfile
> >   Filename for remote session recording is "".
> >   (gdb) set remotelogfile asdf
> >   (gdb) show remotelogfile
> >   Filename for remote session recording is "asdf".
> > 
> > How do you set it back to ""?
> > 
> > I'm working on a configurable remote log capability for the RDI
> > target, and I can't figure out how to set my log file name back to
> > NULL (either NULL or "" would be fine).
> 
> Er, cute :-) Looking at the code, it would appear that that isn't
> possible :-(.
> Would a separate ``set serial log {enable,disable}'' be better?

Well, it would be betting in that it would work. ;) I suppose it might
be handy to be able to disable/re-eanble logging without having to
re-enter the filename.

> BTW, the existing mechanism has other problems.  If there are two
> streams active they both get logged when most likely you didn't want
> that.  (The trace mechanism is similar).
> 
> Feel free to work on this.

The RDI target stuff is separate from the normal serial remote target,
so I'm not actually working on the existing remote code.  I was using
the same set logfile scheme to enable logging, and the code I wrote
will disable logging if you reset the filname to either NULL or "" and
then re-open the target connection.

It looks like a separate logging enable/disable command is what I'll
need to do if I want to be able to disable logging once it has been
enabled (not an absolute necessity, but I thought it might be handy).

-- 
Grant Edwards
grante@visi.com