From: Erik van der Kouwe <erik@minix3.org>
Date: Sun, 16 Aug 2009 12:12:40 +0000 (+0000)
Subject: Man page for new function nanosleep(3), updated man page for sleep(3)
X-Git-Tag: v3.1.5~192
X-Git-Url: http://zhaoyanbai.com/repos/?a=commitdiff_plain;h=83b84cbe64adaac9bde05b0e57a3f719f96a5e22;p=minix.git

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

diff --git a/man/man3/sleep.3 b/man/man3/sleep.3
index 7757f2cf8..241b37233 100644
--- a/man/man3/sleep.3
+++ b/man/man3/sleep.3
@@ -4,7 +4,7 @@
 .\"
 .\"	@(#)sleep.3	6.2 (Berkeley) 5/12/86
 .\"
-.TH SLEEP 3  "May 12, 1986"
+.TH SLEEP 3  "August 16, 2009"
 .UC 4
 .SH NAME
 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
 of seconds specified by the argument.
 .PP
-The routine is implemented by setting an alarm 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 1 second later.
+The routine is implemented using the 'select' function, so it does not
+interfere with alarm timers. If a signal is received, the function returns.
+.SH "RETURN VALUE
+The amount of time that remains to be slept is returned. This value is 
+specified in seconds and rounded up.
 .SH "SEE ALSO"
-.BR alarm (2),
-.BR pause (2).
+.BR pause (2),
+.BR nanosleep (3).