typedef axl_bool(* VortexIoWaitOnFdGroup)(axlPointer fd_group, int max_fds, VortexIoWaitingFor wait_to)

IO handler definition to allow defining the method to be used while performing a IO blocking wait, by default implemented by the IO "select" call.

VortexIoWaitOnFdGroup The handler to set.
The maximum value for the socket descriptor being watched.
The requested operation to perform.
An error code according to the description found on this function: vortex_io_waiting_set_wait_on_fd_group.