Hi Thomas, On Saturday 21 November 2020 at 20:50:38 +0100, Thomas Gleixner wrote: > On Sat, Nov 21 2020 at 07:59, Michael Kerrisk wrote: > > I've been taking a closer look at the the new pthread*clock*() APIs: > > pthread_clockjoin_np() > > pthread_cond_clockwait() > > pthread_mutex_clocklock() > > pthread_rwlock_clockrdlock() > > pthread_rwlock_clockwrlock() > > sem_clockwait() > > Is there any at least rudimentary specification of these functions and > what they are supposed to do? The short answer is that they are like their "timed" equivalents, but they also accept a clockid. The longer answer is at https://www.austingroupbugs.net/view.php?id=1216 and if you have access to it https://www.opengroup.org/austin/restricted/newapis-p1/Additional_APIs_for_Issue_8-part1-changedpages.pdf HTH. Mike.