usleep(3BSD)         (BSD System Compatibility)         usleep(3BSD)


       NAME
             usleep - (BSD) suspend execution for interval in microseconds

       SYNOPSIS
             /usr/ucb/cc [flag . . . ] file . . .
             usleep(unsigned useconds);

       DESCRIPTION
             Suspend the current process for the number of microseconds
             specified by the argument.  The actual suspension time may be
             an arbitrary amount longer because of other activity in the
             system, or because of the time spent in processing the call.

             The routine is implemented by setting an interval timer and
             pausing until it occurs.  The previous state of this timer is
             saved and restored.  If the sleep time exceeds the time to the
             expiration of the previous timer, the process sleeps only
             until the signal would have occurred, and the signal is sent a
             short time later.

             This routine is implemented using setitimer [see
             getitimer(3C)]; it requires eight system calls each time it is
             invoked.

       REFERENCES
             alarm(2), getitimer(3C), sigpause(3BSD), sleep(3BSD),
             ualarm(3BSD)





















                           Copyright 1994 Novell, Inc.               Page 1