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/*
* Mach Operating System
* Copyright (c) 1989 Carnegie-Mellon University
* Copyright (c) 1988 Carnegie-Mellon University
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* HISTORY
* $Log: time.h,v $
* Revision 2.4 89/03/09 22:08:32 rpd
* More cleanup.
*
* Revision 2.3 89/02/25 17:57:02 gm0w
* Made all code dependent on CMUCS always true.
* [89/02/14 mrt]
*
* Revision 2.2 88/08/24 02:48:22 mwyoung
* Adjusted include file references.
* [88/08/17 02:25:13 mwyoung]
*
* 06-Jan-88 Jay Kistler (jjk) at Carnegie Mellon University
* Added declarations for __STDC__.
*
* 20-Jul-86 Michael Young (mwyoung) at Carnegie-Mellon University
* Added _TIME_ definition check to prevent multiple inclusion.
*
* 27-Jan-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Restored the "struct tm" definition, we need it in kern_clock.
*
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)time.h 7.1 (Berkeley) 6/4/86
*/
#ifndef _SYS_TIME_H_
#define _SYS_TIME_H_
/*
* Structure returned by gettimeofday(2) system call,
* and used in other calls.
*/
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* and microseconds */
};
struct timezone {
int tz_minuteswest; /* minutes west of Greenwich */
int tz_dsttime; /* type of dst correction */
};
#define DST_NONE 0 /* not on dst */
#define DST_USA 1 /* USA style dst */
#define DST_AUST 2 /* Australian style dst */
#define DST_WET 3 /* Western European dst */
#define DST_MET 4 /* Middle European dst */
#define DST_EET 5 /* Eastern European dst */
#define DST_CAN 6 /* Canada */
/*
* Operations on timevals.
*
* NB: timercmp does not work for >= or <=.
*/
#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp) \
((tvp)->tv_sec cmp (uvp)->tv_sec || \
((tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec))
#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
/*
* Names of the interval timers, and structure
* defining a timer setting.
*/
#define ITIMER_REAL 0
#define ITIMER_VIRTUAL 1
#define ITIMER_PROF 2
struct itimerval {
struct timeval it_interval; /* timer interval */
struct timeval it_value; /* current value */
};
#ifdef KERNEL
/*
* Structure returned by gmtime and localtime calls (see ctime(3)).
*/
struct tm {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
int tm_yday;
int tm_isdst;
};
#else
#import <time.h>
#endif
#if defined(__STDC__) && !defined(KERNEL)
extern int adjtime(struct timeval *, struct timeval *);
extern int getitimer(int, struct itimerval *);
extern int setitimer(int, struct itimerval *, struct itimerval *);
extern int gettimeofday(struct timeval *, struct timezone *);
extern int settimeofday(struct timeval *, struct timezone *);
extern int utimes(const char *, struct timeval *);
#endif
#endif
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