On Fri, Apr 28, 2017 at 07:50:55AM -0600, Martin Pieuchot wrote: > CVSROOT: /cvs > Module name: src > Changes by: m...@cvs.openbsd.org 2017/04/28 07:50:55 > > Modified files: > sys/conf : files > sys/kern : init_main.c kern_pledge.c syscalls.master > sys/sys : proc.h > Added files: > sys/kern : sys_futex.c > sys/sys : futex.h > > Log message: > Add futex(2) syscall based on a sane subset of its Linux equivalent. > > The syscall is marked NOLOCK and only FUTEX_WAIT grabs the KERNEL_LOCK() > because of PCATCH and the signal nightmare. > > Serialization of threads is currently done with a global & exclusive > rwlock. > > Note that the current implementation still use copyin(9) which is not > guaranteed to be atomic. Committing now such that remaining issues can > be addressed in-tree. > > With inputs from guenther@, kettenis@ and visa@. > > ok deraadt@, visa@ >
I owe you a keg -- Gilles Chehade https://www.poolp.org @poolpOrg
