Luv.OnceSourceOnce-only initialization.
See Once-only initialization in libuv.
Allocates and initializes a once-only barrier.
Binds UV_ONCE_INIT. See pthread_once(3p).
Guards the given callback to be called only once.
Binds uv_once. See pthread_once(3p).
Like Luv.Once.once, but takes a pointer to a C function.