On Wed, Apr 5, 2017 at 12:42 PM, Branko Čibej <br...@apache.org> wrote: > On 05.04.2017 12:39, Yann Ylavic wrote: >> On Wed, Apr 5, 2017 at 12:27 PM, Branko Čibej <br...@apache.org> wrote: >>> On 05.04.2017 12:19, Yann Ylavic wrote: >>>> On Tue, Apr 4, 2017 at 10:57 PM, Jim Jagielski <j...@jagunet.com> wrote: >>>>>> On Apr 4, 2017, at 4:29 PM, Yann Ylavic <ylavic....@gmail.com> wrote: >>>>>> >>>>>> >>>>>> I'm not a big fan of the "sleep" fallback implementation. >>>>>> >>>>> Feel free to replace it with something better. >>>> Would an implementation based on a pipe (hence two FDs per mutex) be >>>> acceptable? >>> The default open-file limit on the Mac is a paltry 256, I'm not sure >>> it'd be a good idea for APR to suddenly start using up file descriptors >>> for timed waits on mutexes. >> Yes, that was my fear... >> >>> Couldn't we use a condition variable for this? >> We can for thread-mutexes (was the case before this commit), but not >> for proc-mutexes since OSX also lacks pshared condvars (i.e. >> PTHREAD_CONDATTR_SETPSHARED). > > Not according to the header files. The declaration is there, available > since OSX 10.4 and iOS 2.0, which I'd say means it's pretty much > available always.
Ah great, so we can probably do something for these versions and return ENOTIMPL for earliers. I won't be able to test anything on Mac(s), may I commit or propose something blindly and one test it?
