Re: [PATCH] gdb: infrun: consume multiple events at each pass in stop_all_threads

[Simon Marchi <simark@simark.ca>]

On 2020-04-16 1:51 p.m., Pedro Alves via Gdb-patches wrote:
> This makes sense to me, but can you try locally to check whether
> if you do _more_ waits than wait_needed, like, say:
> 
>     for (int i = 0; i < (waits_needed * 2); i++)
> 
> ... GDB still works correctly?  In theory, wait_one will end up
> returning TARGET_WAITKIND_NO_RESUMED once you get to waits_needed,
> and things will all work out.

I've just tried it and this is what I observed.

> The reason I'm asking this, is if a process exits, or execs, while
> we're trying to stop it, I think that it's possible that we won't see
> an exit event for each and every thread of that exiting process.
> Particularly execs -- see follow_exec's delete_thread calls.
> This is somewhat related to Tankut's patch, here:
> 
>  https://sourceware.org/pipermail/gdb-patches/2020-April/167416.html

Hmm so his patch will definitely conflict with mine.  I don't mind waiting
a bit and rebasing mine once his patch is merged, since he posted it long
before mine.

Simon