RE: "thread", "thread apply" and "step" ?

Rich Wagner
2008-08-06T17:38:16Z

Thanks Daniel: I tried my experiments using GDB 6.8 and it does handle
the thread/step combinations sensibly. To be specific, both:

thread X
step

and:

thread apply X step

stepped thread X, even though the previous breakpoint-hit was in a
different thread than X.

-- Rich

-----Original Message-----
From: Daniel Jacobowitz [mailto:drow@false.org]
Sent: Tuesday, August 05, 2008 4:24 PM
To: Rich Wagner
Cc: gdb@sourceware.org
Subject: Re: "thread", "thread apply" and "step" ?

On Tue, Aug 05, 2008 at 04:11:14PM -0400, Rich Wagner wrote:
> I'm using "gdb --version":
>
> GNU gdb Red Hat Linux (6.3.0.0-1.132.EL4rh)

Could you try 6.8, or even better a CVS snapshot, and see if it still
does this? That release is several years old.

I think GDB does step the correct thread nowadays.

> P.S. Where I work, we also use a customized version of gdb where we
> provide our own RSP interpreter, because the customized version is
> used for remote debugging. Would the introduction of RSP change
> things as they relate to threads and stepping? I'm assuming the
"official"
> GDB-spec-based answers would necessarily apply to an RSP-based debug
> session, but I mention RSP in case it affects things.

If you implement vCont, the serial protocol should work just as well.

--
Daniel Jacobowitz
CodeSourcery