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Date: Tue, 20 Jul 2010 14:49:00 -0000
From: Oleg Nesterov <oleg@redhat.com>
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: archer@sourceware.org
Subject: Re: BUG? gdb, non-stop && c -a
Message-ID: <20100720144738.GA21427@redhat.com>
References: <20100718174851.GA15528@redhat.com> <20100716205147.GA26313@redhat.com> <20100719160127.GA13331@host1.dyn.jankratochvil.net> <20100720131615.GA17450@redhat.com> <20100720140136.GA18643@redhat.com> <20100720141155.GA16382@host1.dyn.jankratochvil.net>
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On 07/20, Jan Kratochvil wrote:
>
> On Tue, 20 Jul 2010 16:01:36 +0200, Oleg Nesterov wrote:
> > On 07/20, Oleg Nesterov wrote:
> > >
> > > Using the same test-case, I did
> >
> > Another oddity. Again, the same test-case but I guess any mt program
> > can be used.
> >
> > 	(gdb) set non-stop
>
> non-stop mode should be generally used together with:
> 	(gdb) set target-async on

Hmm, thanks... I'll read the docs about target-async.

> > this sends "vCont;c:p4745.4746" but not "vCont;c:p4745.-1" as I'd expect.
>
> Why is this a problem to list all the threads instead of -1?

But doesn't list all threads? p4745.4746 is the single thread?

And, in any case, gdbserver resumes only this thread.

> > Now it sends "vCont;c:p4745.4745" and resumes the main thread. But
> > now gdb doesn't react to ^C and "hangs". (no, SIGINT is not blocked).
>
> CTRL-C is not useful in target-async mode.

OK, thanks.

So, it is not possible to enter the CLI mode again after "c -a" ?
(unless the target hits the bp or something, of course).

Oleg.