Re: observe & control thread state for exit futex ?

Daniel Jacobowitz (dan@debian.org)
Sun, 13 Apr 2003 23:35:48 -0400


On Sun, Apr 13, 2003 at 07:52:08PM -0700, John Reiser wrote:
> How can a debugger, newly attached to an arbitrary thread, determine whether
> the thread has a pending exit futex and associated memory location to clear
> [CLONE_CHILD_CLEARTID flag and child_tid_ptr parameter at __clone()]?
>
> If so, then how can the debugger determine the address, change the address,
> cancel the futex, and/or intercept the notification?

It can't. Even clone flags are not accessible.

If you can think of a good reason that a debugger would need any
particular piece of data, exposing it is very straightforward.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/