Michael Schnell wrote: > > >in our context of Linux and doing it right, > >TLS is the way to go > But if the port does not have it..... > > (I want to port a multithreaded program from a propriety OS and as the > Linux interprocess sync is slow, I hoped to be able to do a user-land > inter-thread sync based on Futex. But now I find: no Futex, no fast way > to get a thread ID. Quite frustrating....)
Actually you can use raw futexes if you're prepared to write your own mutexe. That doesn't use any thread library. It's just a system call. It's how futex was used originally, and it's still used that way for some things. You might be able to copy the NPTL mutex code, rename the functions and use it in your own program - maybe from an older version, which doesn't need the kernel to support futex atomic ops. (Those were added later as an optimisation). Before jumping to conclusions about speed, try measuring the speed of pthread_getspecific and pthread_self. -- Jamie _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
