Re: [RFA] Report the main thread.

[Vladimir Prus <vladimir at codesourcery dot com>]

Nick Roberts wrote:

>  > > Now that Joel has requested that I use observer_attach_new_thread for
>  > > annotations this approach doesn't only produce MI output so it needs to
>  > > be conditioned on MI:
>  > > 
>  > > @@ -124,6 +124,10 @@ add_thread_silent (ptid_t ptid)
>  > >    tp->num = ++highest_thread_num;
>  > >    tp->next = thread_list;
>  > >    thread_list = tp;
>  > > +
>  > > +  if (ui_out_is_mi_like_p (uiout))
>  > > +    observer_notify_new_thread (tp);
>  > 
>  > This patch, IIUC, will cause the new_thread observer to be notified only
>  > in MI mode. Then, no observer except for MI one will ever be called?
>  > Then, why those non-MI observers exist?
>  > 
>  > Or to put in other way, I think this patch will make you annotation
>  > observers to be never called. Is this what you want?
> 
> Yes, you're right.  I didn't notice that the observer in add_thread_with_info
> was removed at the same time this one was added.
> 
> I just want threads other than the main thread to be reported, as used to
> be the case.  

Assuming that makes sense for annotations, I think your observer is in position
to decide which threads to report, and which not?

> That way I can create a threads buffer and display the thread 
> number when there is more than one thread.  

Cannot you just suppress display of thread list if there's just one
thread reported, on UI side?

- Volodya