sleep(3) C LIBRARY FUNCTIONS sleep(3)
NAME
sleep - suspend execution for interval
SYNOPSIS
cc [ flag... ] file ... -lucb
sleep(seconds)
unsigned seconds;
DESCRIPTION
sleep suspends the current process from execution for the
number of seconds specified by the argument. The actual
suspension time may be up to 1 second less than that
requested, because scheduled wakeups occur at fixed 1-second
intervals, and may be an arbitrary amount longer because of
other activity in the system. sleep is implemented by set-
ting an interval timer and pausing until it expires. The
previous state of this timer is saved and restored. If the
sleep time exceeds the time to the expiration of the previ-
ous value of the timer, the process sleeps only until the
timer would have expired, and the signal which occurs with
the expiration of the timer is sent one second later.
SEE ALSO
sigpause(3), usleep(3) getitimer(2) in the Programmer's
Reference Manual
Last change: BSD Compatibility Package 1