Understanding ThreadNo() Syscall

"Christian, Martin, OPEE45" <[email protected]> Wed, 20 Dec 2006 11:30:08 +0100

Newsgroups	gmane.comp.micro-kernel.l4.l4ka.general
Message-ID	<[email protected]>

Hi,
would someone please explain to me in short, what I gain from the
ThreadNo() Syscall? If I've got something like this:

>From pingpong.cc line 393:
  master_tid = L4_Myself ();
  x = L4_ThreadNo(master_tid);

What ist the difference between x and master_tid?

According to the Reference Manual, Myself() delivers already the a
global ThreadID? So I don't get more information, do I?

Thanks,

Martin.