/* timespec -- System time interface
- Copyright (C) 2000, 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2002, 2004, 2005, 2007 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
#if ! defined TIMESPEC_H
# define TIMESPEC_H
-/* You must include config.h before including this file. */
+# include <time.h>
-# include <sys/types.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
-
-# if ! HAVE_STRUCT_TIMESPEC
-/* Some systems don't define this struct, e.g., AIX 4.1, Ultrix 4.3. */
-struct timespec
+/* Return negative, zero, positive if A < B, A == B, A > B, respectively.
+ Assume the nanosecond components are in range, or close to it. */
+static inline int
+timespec_cmp (struct timespec a, struct timespec b)
{
- time_t tv_sec;
- long tv_nsec;
-};
-# endif
-
-# ifdef ST_MTIM_NSEC
-# define ST_TIME_CMP_NS(a, b, ns) ((a).ns < (b).ns ? -1 : (a).ns > (b).ns)
-# else
-# define ST_TIME_CMP_NS(a, b, ns) 0
-# endif
-# define ST_TIME_CMP(a, b, s, ns) \
- ((a).s < (b).s ? -1 : (a).s > (b).s ? 1 : ST_TIME_CMP_NS(a, b, ns))
-# define ATIME_CMP(a, b) ST_TIME_CMP (a, b, st_atime, st_atim.ST_MTIM_NSEC)
-# define CTIME_CMP(a, b) ST_TIME_CMP (a, b, st_ctime, st_ctim.ST_MTIM_NSEC)
-# define MTIME_CMP(a, b) ST_TIME_CMP (a, b, st_mtime, st_mtim.ST_MTIM_NSEC)
-
-# ifdef ST_MTIM_NSEC
-# define TIMESPEC_NS(timespec) ((timespec).ST_MTIM_NSEC)
-# else
-# define TIMESPEC_NS(timespec) 0
-# endif
-
-# if ! HAVE_DECL_NANOSLEEP
-/* Don't specify a prototype here. Some systems (e.g., OSF) declare
- nanosleep with a conflicting one (const-less first parameter). */
-int nanosleep ();
-# endif
+ return (a.tv_sec < b.tv_sec ? -1
+ : a.tv_sec > b.tv_sec ? 1
+ : a.tv_nsec - b.tv_nsec);
+}
void gettime (struct timespec *);
int settime (struct timespec const *);