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Man page for new function nanosleep(3), updated man page for sleep(3)

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Erik van der Kouwe 2009-08-16 12:12:40 +00:00
parent 247e1e8fa8
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18
man/man3/sleep.3
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@ -4,7 +4,7 @@
.\" .\"
.\" @(#)sleep.3 6.2 (Berkeley) 5/12/86 .\" @(#)sleep.3 6.2 (Berkeley) 5/12/86
.\" .\"
.TH SLEEP 3 "May 12, 1986" .TH SLEEP 3 "August 16, 2009"
.UC 4 .UC 4
.SH NAME .SH NAME
sleep \- suspend execution for interval sleep \- suspend execution for interval
@ -19,13 +19,11 @@ unsigned int sleep(unsigned int \fIseconds\fP)
The current process is suspended from execution for the number The current process is suspended from execution for the number
of seconds specified by the argument. of seconds specified by the argument.
.PP .PP
The routine is implemented by setting an alarm timer The routine is implemented using the 'select' function, so it does not
and pausing until it occurs. interfere with alarm timers. If a signal is received, the function returns.
The previous state of this timer is saved and restored. .SH "RETURN VALUE
If the sleep time exceeds the time to the expiration of the The amount of time that remains to be slept is returned. This value is
previous timer, specified in seconds and rounded up.
the process sleeps only until the signal would have occurred, and the
signal is sent 1 second later.
.SH "SEE ALSO" .SH "SEE ALSO"
.BR alarm (2), .BR pause (2),
.BR pause (2). .BR nanosleep (3).