From 86873e50825448c55e538a5210f9c4fcb0d87166 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 19 May 2006 18:03:25 +0000
Subject: Sync nanosleep from gnulib.

---
 lib/ChangeLog   |  6 ++++++
 lib/nanosleep.c | 33 ++++++++++++++++++++++++++++-----
 2 files changed, 34 insertions(+), 5 deletions(-)

(limited to 'lib')

diff --git a/lib/ChangeLog b/lib/ChangeLog
index 05b0daeac..5e6cb7e49 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,9 @@
+2006-05-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* nanosleep.c [HAVE_SYS_SELECT_H]: Include <sys/select.h>.
+	Use the usual Autoconf way to include <time.h> and/or sys/time.h.
+	(my_usleep): Don't mishandle maximum value.
+
 2006-05-15  Jim Meyering  <jim@meyering.net>
 
 	Avoid the expense of an fstat, when possible.
diff --git a/lib/nanosleep.c b/lib/nanosleep.c
index 61fc1b90b..7ffe05d2e 100644
--- a/lib/nanosleep.c
+++ b/lib/nanosleep.c
@@ -1,5 +1,7 @@
 /* Provide a replacement for the POSIX nanosleep function.
-   Copyright (C) 1999, 2000, 2002, 2004, 2005 Free Software Foundation, Inc.
+
+   Copyright (C) 1999, 2000, 2002, 2004, 2005, 2006 Free Software
+   Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -27,9 +29,23 @@
 
 #include <stdbool.h>
 #include <stdio.h>
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
 #include <sys/types.h>
 #include <signal.h>
 
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
 #include <errno.h>
 
 #include <unistd.h>
@@ -57,7 +73,7 @@ sighandler (int sig)
   suspended = 1;
 }
 
-/* FIXME: comment */
+/* Suspend execution for at least *TS_DELAY seconds.  */
 
 static void
 my_usleep (const struct timespec *ts_delay)
@@ -67,13 +83,20 @@ my_usleep (const struct timespec *ts_delay)
   tv_delay.tv_usec = (ts_delay->tv_nsec + 999) / 1000;
   if (tv_delay.tv_usec == 1000000)
     {
-      tv_delay.tv_sec++;
-      tv_delay.tv_usec = 0;
+      time_t t1 = tv_delay.tv_sec + 1;
+      if (t1 < tv_delay.tv_sec)
+	tv_delay.tv_usec = 1000000 - 1; /* close enough */
+      else
+	{
+	  tv_delay.tv_sec = t1;
+	  tv_delay.tv_usec = 0;
+	}
     }
   select (0, NULL, NULL, NULL, &tv_delay);
 }
 
-/* FIXME: comment */
+/* Suspend execution for at least *REQUESTED_DELAY seconds.  The
+   *REMAINING_DELAY part isn't implemented yet.  */
 
 int
 rpl_nanosleep (const struct timespec *requested_delay,
-- 
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