module Netsys_pollset_win32:sig..end
exception Too_many_descriptors
val pollset : unit -> Netsys_pollset.pollsetNetsys_win32 (add the descriptors
         returned by pipe_descr or pipe_server_descr to the pollset)Too_many_descriptors
      is raised (by add).
      POLLERR, POLLHUP, and POLLNVAL are not detected by this impl.
val threaded_pollset : unit -> Netsys_pollset.pollsetmodule Debug:sig..end