Re: [RFA] add selected-frame-level-changed events

[Andrew Cagney <ac131313 at ges dot redhat dot com>]

> On Tue, 27 Aug 2002, Andrew Cagney wrote:
>
>
> > Why not put it in there anyway?
>
> You mean add a notification in select_frame? Because UIs don't care when 
> GDB is temporarily switching frames for whatever reason. What matters is 
> when something happens to cause the current frame to be changed and cause 
> gdb and the MI client to get out of sync. As far as I know, this only 
> happens via the command line frame commands (up, down, frame). There might 
> be others, but I've never seen them.
Wonder what the TUI gets up to :-)

> > I think, not putting it in select_frame() is the part that needs the fixme.
>
> Right, that's what I meant. Sorry if I was vague. Ideally, we would like 
> it in select_frame, but we cannot do that right now because the UI would 
> be informed of billions of frame changes per step, especially if varobj is 
> operating.
Ok.  Can you just add comments explaining the above, especially in 
select_frame(), so that people know why the call isn't yet there.

As for the unnecessary select frame calls, I guess ``we'' are working on 
it.  I suspect that varobj could do with an audit --- use FRAME_ID() and 
frame parameterized versions of various functions.

Andrew