Hi Carlos, Ping! Thanks, Michael On Fri, 26 Jun 2020 at 10:54, Michael Kerrisk (man-pages) <mtk.manpages@xxxxxxxxx> wrote: > > Hi Carlos, > > Could you comment here, as this was your text in pthread_rwlockattr_setkind_np(3)? > > On 6/25/20 2:32 PM, Kumar Kartikeya Dwivedi wrote: > > Hi, > > In pthread_rwlockattr_setkind_np(3), the explanation for > > PTHREAD_RWLOCK_PREFER_WRITER_NP reads: > > > >> This is ignored by glibc because the POSIX requirement to support > >> recursive writer locks would cause this option to create trivial > >> deadlocks; > > > > I think this should be "reader locks" instead, since it is > > undefined[1] for a thread holding a write lock to call > > pthread_rwlock_wrlock(3) again (glibc returns EDEADLK, musl simply > > deadlocks). There's no such requirement in POSIX either. Please let me > > know if I'm missing something. > > > > [1]: https://pubs.opengroup.org/onlinepubs/007908799/xsh/pthread_rwlock_wrlock.html > > Cheers, > > Michael > > -- > Michael Kerrisk > Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ > Linux/UNIX System Programming Training: http://man7.org/training/ -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
