1 /* 2 * Copyright (c) 1982, 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)time.h 7.6 (Berkeley) 2/22/91 34 */ 35 36 #ifndef _SYS_TIME_H_ 37 #define _SYS_TIME_H_ 38 39 /* 40 * Structure returned by gettimeofday(2) system call, 41 * and used in other calls. 42 */ 43 struct timeval { 44 long tv_sec; /* seconds */ 45 long tv_usec; /* and microseconds */ 46 }; 47 48 struct timezone { 49 int tz_minuteswest; /* minutes west of Greenwich */ 50 int tz_dsttime; /* type of dst correction */ 51 }; 52 #define DST_NONE 0 /* not on dst */ 53 #define DST_USA 1 /* USA style dst */ 54 #define DST_AUST 2 /* Australian style dst */ 55 #define DST_WET 3 /* Western European dst */ 56 #define DST_MET 4 /* Middle European dst */ 57 #define DST_EET 5 /* Eastern European dst */ 58 #define DST_CAN 6 /* Canada */ 59 60 /* 61 * Operations on timevals. 62 * 63 * NB: timercmp does not work for >= or <=. 64 */ 65 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 66 #define timercmp(tvp, uvp, cmp) \ 67 ((tvp)->tv_sec cmp (uvp)->tv_sec || \ 68 (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec) 69 #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 70 71 /* 72 * Names of the interval timers, and structure 73 * defining a timer setting. 74 */ 75 #define ITIMER_REAL 0 76 #define ITIMER_VIRTUAL 1 77 #define ITIMER_PROF 2 78 79 struct itimerval { 80 struct timeval it_interval; /* timer interval */ 81 struct timeval it_value; /* current value */ 82 }; 83 84 #ifndef KERNEL 85 #include <time.h> 86 87 #ifndef _POSIX_SOURCE 88 #include <sys/cdefs.h> 89 90 __BEGIN_DECLS 91 int adjtime __P((const struct timeval *, struct timeval *)); 92 int getitimer __P((int, struct itimerval *)); 93 int gettimeofday __P((struct timeval *, struct timezone *)); 94 int setitimer __P((int, const struct itimerval *, struct itimerval *)); 95 int settimeofday __P((const struct timeval *, const struct timezone *)); 96 int utimes __P((const char *, const struct timeval *)); 97 __END_DECLS 98 #endif /* !POSIX */ 99 100 #else 101 102 extern struct timeval boottime; 103 extern struct timezone tz; 104 105 /* interface symbols */ 106 #define __ISYM_VERSION__ "1" /* XXX RCS major revision number of hdr file */ 107 #include "isym.h" /* this header has interface symbols */ 108 109 /* global variables used in core kernel and other modules */ 110 __ISYM__(struct timeval, time,) 111 112 /* functions used in modules */ 113 __ISYM__(void, microtime, (struct timeval *)) /* */ 114 115 #undef __ISYM__ 116 #undef __ISYM_ALIAS__ 117 #undef __ISYM_VERSION__ 118 #endif /* KERNEL */ 119 120 #endif /* !_SYS_TIME_H_ */ 121