uv__signal_unlock_and_unblock  321 src/unix/signal.c       uv__signal_unlock_and_unblock(&saved_sigmask);
uv__signal_unlock_and_unblock  329 src/unix/signal.c   uv__signal_unlock_and_unblock(&saved_sigmask);
uv__signal_unlock_and_unblock  455 src/unix/signal.c   uv__signal_unlock_and_unblock(&saved_sigmask);