(sorry, I'm not subbed to list; only saw your reply by looking up archives)
> The only "high priority events" are socket out of band data. > EV_OOB is only used in 3 c files: > > http://fxr.watson.org/fxr/ident?v=xnu-2050.18.24&i=EV_OOB > > It is simple enough for us to do the same if that's useful. > > christos That would be wonderful :) Though an alternate solution came up over on the OpenBSD list: DragonBSD implements EVFILT_EXCEPT in addition to EVFILT_READ and EVFILE_WRITE. This seems to be a much cleaner solution, where each of the three map cleanly to a select() set. (OSX has a few weird bugs when there are both POLLIN AND POLLPRI events). Please let me know if there's anything I can help with.