Re: multi-{inferior,exec}

[Stan Shebs <stan at codesourcery dot com>]

Tom Tromey wrote:
> Another use case would be putting a breakpoint on a particular function,
> say from some kind of symbol view.  After some reflection, I think the
> solution in this case lies in a linespec extension, not in I/T sets.  In
> particular:
>
>   break [*] #libsomething.so#function
>   

The '#' syntax is in the old spec actually, you even commented about it 
in http://sourceware.org/ml/gdb/2008-08/msg00177.html :-)

> I also looked into another idea we discussed -- having a kind of
> meta-breakpoint for I/T sets that sets new concrete breakpoints when the
> appropriate events occur.
>
> This means associating new metadata with a new kind of breakpoint and
> coming up with a new command name.  This seems like more work, for a
> result that is not as nice to use.
>   

What I've been doing for now for global breakpoints is to add the 
quasi-i/t set as another attribute of a breakpoint, a la thread or 
cond_string.  This then is both interpreted by GDB, for processes that 
are currently under GDB's control, and passed to a kernel module that is 
monitoring all other processes for hits.

Stan