improved thread id reporting

[Paul Pluzhnikov]

On Sat, Apr 4, 2009 at 8:11 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Sat, 4 Apr 2009 17:21:14 -0400
>> From: Daniel Jacobowitz <drow@false.org>
>> Cc: mark.kettenis@xs4all.nl, dje@google.com, gdb@sourceware.org
>>
>> On native Linux, they're the same as pthread_self would return.
>
> And how's that useful?

Sometimes that's very useful.

One example is where thread has performed some logging with
its pthread_self, and you are now trying to figure out which
thread that was.

Another is when you are debugging a deadlock, and want to know
who is waiting on the given lock (thread ids of waiters are
stored somewhere in mutex_t, IIRC).

-- 
Paul Pluzhnikov