> > > So then what is the meaning of that typedef and why its still there ?
the typedef means that the *IMPLEMENTATION* uses an unsigned long to store its cookie in. > > >Other implementations are allowed to use different types for this. In > >fact, I'd be surprised if NPTL and LinuxThreads would have the same > >type... (they'll have the same size for ABI compat reasons of course, > >but type... not so sure). > > > > > > > I haven't faced the same returns with 2.4.18. So why is it so with 2.6.x > kernels ? pthread_self() on 2.4.18 was returning the same as gettid() > with 2.6.x. pure luck. NPTL threading uses it to store a pointer to per thread info structure; other threading (linuxthreads) may have stored a pid there to identify the internal thread. nptl is 2.6 only so you might have switched implementation of threading when you switched kernels. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/