Re: observe & control thread state for exit futex ?

[Daniel Jacobowitz]

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