So did you provide for a way to give up immediately if sem cannot be acquired immediately?
Bradley > On Jan 3, 27 Heisei, at 11:21 AM, Ole Tange <o...@tange.dk> wrote: > >> On Fri, Jan 2, 2015 at 8:53 PM, Bradley Asztalos <b...@customweather.com> >> wrote: >>> On Fri, Jan 2, 2015 at 7:35 AM, Ole Tange <o...@tange.dk> wrote: >>> On Fri, Jan 2, 2015 at 10:51 AM, Bradley Asztalos >>> <b...@customweather.com> wrote: > : >>> So that is almost the opposite of --semaphoretimeout >>> >>> Maybe it should be able to take a negative value: If you cannot get >>> the semaphore within 2 seconds, give up. >>> >>> sem --semaphoretimeout -2 do_stuff > >> That would work. >> >> Does --semaphoretimeout 0 mean never give up? > > Yes: Just as if the option had not been given. > >> If so then -0 could mean give up immediately. > > -0 = 0, so no. > > It is implemented in the git version. > >> By the way the note on the sem man page says that sem --timeout is not >> implemented. > > I have updated the man page. > > --timeout is for timing out the running of the command. > > --semaphoretimeout is for timing out on getting the semaphore. > > > /Ole
