libuv

Most features of libuv are supported by current port, except SIGPROF relative function (loop_configure).

Nearly full libuv‘s test suite avaliable on NuttX, but some known case can’t run on sim:

• loop_update_time
• idle_starvation
• signal_multiple_loops
• signal_pending_on_close
• metrics_idle_time
• metrics_idle_time_thread
• metrics_idle_time_zero

And some will cause crash by some reason:

• fs_poll_ref