/* * cv_timedwait_sig: * * Wait on a condition variable until a timeout expires, awoken or a * signal is received. Will also return early if the process is * exiting. Returns zero if awoken normally, EWOULDBLOCK if the * timeout expires, ERESTART if a signal was received and the system * call is restartable, or EINTR otherwise. * * timo is a timeout in ticks. timo = 0 specifies an infinite timeout. */