iom_init - create new I/O multiplexer

       iom_init initializes an I/O multiplexer.

       An  I/O  multiplexer  is  a  context  that  can  be used to do I/O multiplexing with support for multiple
       threads. Add events to a multiplexer using iom_add, and then get the next available event with  iom_wait.
       If  you are done and want to signal all the threads something, set a volatile global variable to tell the
       threads to stop and then fall iom_abort to tell all pending iom_wait operations in all threads to  return
       immediately.

       After  iom_init  is  done, iom_add and iom_wait can be called from different threads on the same context,
       and they will synchronize internally.

       You may have to add -lpthread to the command line in the linking step.

       iom_init - create new I/O multiplexer

       iom_init returns 0 on success and -1 on error, setting errno.

       iom_add, iom_wait, iom_abort

                                                                                                     iom_init(3)

#include<libowfat/io.h>

       int iom_init(iomux_t* c);