SLEEP(2) SLEEP(2)
NAME
sleep, alarm - delay, ask for delayed note
SYNOPSIS
int sleep(long millisecs)
long alarm(unsigned long millisecs)
DESCRIPTION
Sleep suspends the current process for the number of mil-
liseconds specified by the argument. The actual suspension
time may be a little more or less than the requested time. A
sleep of 0 causes the process to give up the CPU if another
process is ready to run. Sleep returns -1 if interrupted, 0
otherwise.
Alarm causes an alarm note (see notify(2)) to be sent to the
invoking process after the number of milliseconds given by
the argument. Successive calls to alarm reset the alarm
clock. A zero argument clears the alarm. The return value
is the amount of time previously remaining in the alarm
clock.
SEE ALSO
intro(2)
DIAGNOSTICS
These functions set errstr.
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