| time.h (32052) | time.h (33690) |
|---|---|
| 1/* 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. 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 --- 17 unchanged lines hidden (view full) --- 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 8.5 (Berkeley) 5/4/95 | 1/* 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. 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 --- 17 unchanged lines hidden (view full) --- 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 8.5 (Berkeley) 5/4/95 |
| 34 * $Id: time.h,v 1.15 1997/06/24 18:21:09 jhay Exp $ | 34 * $Id: time.h,v 1.16 1997/12/28 13:36:09 phk Exp $ |
| 35 */ 36 37#ifndef _SYS_TIME_H_ 38#define _SYS_TIME_H_ 39 40#include <sys/types.h> 41 42/* --- 29 unchanged lines hidden (view full) --- 72#define DST_NONE 0 /* not on dst */ 73#define DST_USA 1 /* USA style dst */ 74#define DST_AUST 2 /* Australian style dst */ 75#define DST_WET 3 /* Western European dst */ 76#define DST_MET 4 /* Middle European dst */ 77#define DST_EET 5 /* Eastern European dst */ 78#define DST_CAN 6 /* Canada */ 79 | 35 */ 36 37#ifndef _SYS_TIME_H_ 38#define _SYS_TIME_H_ 39 40#include <sys/types.h> 41 42/* --- 29 unchanged lines hidden (view full) --- 72#define DST_NONE 0 /* not on dst */ 73#define DST_USA 1 /* USA style dst */ 74#define DST_AUST 2 /* Australian style dst */ 75#define DST_WET 3 /* Western European dst */ 76#define DST_MET 4 /* Middle European dst */ 77#define DST_EET 5 /* Eastern European dst */ 78#define DST_CAN 6 /* Canada */ 79 |
| 80/* 81 * Structure used to interface to the machine dependent hardware 82 * support for timekeeping. 83 * 84 * A timecounter is a binary counter which has two simple properties: 85 * * it runs at a fixed frequency. 86 * * must not roll over in less than (1+epsilon)/HZ 87 * 88 * get_timecount reads the counter. 89 * 90 * get_timedelta returns difference between the counter now and offset_count 91 * 92 * counter_mask removes unimplemented bits from the count value 93 * 94 * frequency should be obvious 95 * 96 * name is a short mnemonic name for this counter. 97 * 98 * cost is a measure of how long time it takes to read the counter. 99 * 100 * adjustment [PPM << 16] which means that the smallest unit of correction 101 * you can apply amounts to 481.5 usec/year. 102 * 103 * scale_micro [2^32 * usec/tick] 104 * 105 * scale_nano_i [ns/tick] 106 * 107 * scale_nano_f [(ns/2^32)/tick] 108 * 109 * offset_count is the contents of the counter which corresponds to the 110 * rest of the offset_* values 111 * 112 * offset_sec [s] 113 * offset_micro [usec] 114 * offset_nano [ns/2^32] is misnamed, the real unit is .23283064365... 115 * attoseconds (10E-18) and before you ask: yes, they are in fact 116 * called attoseconds, it comes from "atten" for 18 in Danish/Swedish. 117 */ 118 119struct timecounter; 120typedef u_int timecounter_get_t __P((struct timecounter *)); 121typedef u_int64_t timecounter_delta_t __P((void)); 122 123struct timecounter { 124 /* These fields must be initialized by the driver */ 125 timecounter_get_t *get_timedelta; 126 timecounter_delta_t *get_timecount; 127 u_int64_t counter_mask; 128 u_int32_t frequency; 129 char *name; 130 /* These fields will be managed by the generic code */ 131 int cost; 132 int32_t adjustment; 133 u_int32_t scale_micro; 134 u_int32_t scale_nano_i; 135 u_int32_t scale_nano_f; 136 u_int64_t offset_count; 137 u_int32_t offset_sec; 138 u_int32_t offset_micro; 139 u_int64_t offset_nano; 140 struct timecounter *other; 141 struct timecounter *tweak; 142}; 143 |
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| 80/* Operations on timevals. */ 81#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 82#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 83#define timercmp(tvp, uvp, cmp) \ 84 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 85 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 86 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 87#ifndef KERNEL /* use timevaladd/timevalsub in kernel */ --- 45 unchanged lines hidden (view full) --- 133#define CLOCK_REALTIME 0 134#define CLOCK_VIRTUAL 1 135#define CLOCK_PROF 2 136 137#define TIMER_RELTIME 0x0 /* relative timer */ 138#define TIMER_ABSTIME 0x1 /* absolute timer */ 139 140#ifdef KERNEL | 144/* Operations on timevals. */ 145#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 146#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 147#define timercmp(tvp, uvp, cmp) \ 148 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 149 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 150 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 151#ifndef KERNEL /* use timevaladd/timevalsub in kernel */ --- 45 unchanged lines hidden (view full) --- 197#define CLOCK_REALTIME 0 198#define CLOCK_VIRTUAL 1 199#define CLOCK_PROF 2 200 201#define TIMER_RELTIME 0x0 /* relative timer */ 202#define TIMER_ABSTIME 0x1 /* absolute timer */ 203 204#ifdef KERNEL |
| 205extern struct timecounter *timecounter; 206 207void forward_timecounter __P((void)); |
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| 141void gettime __P((struct timeval *tv)); | 208void gettime __P((struct timeval *tv)); |
| 209void init_timecounter __P((struct timecounter *)); |
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| 142int itimerfix __P((struct timeval *tv)); 143int itimerdecr __P((struct itimerval *itp, int usec)); | 210int itimerfix __P((struct timeval *tv)); 211int itimerdecr __P((struct itimerval *itp, int usec)); |
| 144void timevaladd __P((struct timeval *, struct timeval *)); 145void timevalsub __P((struct timeval *, struct timeval *)); | |
| 146void microtime __P((struct timeval *tv)); 147void nanotime __P((struct timespec *ts)); | 212void microtime __P((struct timeval *tv)); 213void nanotime __P((struct timespec *ts)); |
| 214void second_overflow __P((u_int32_t *psec)); 215void set_timecounter __P((struct timespec *)); 216void timevaladd __P((struct timeval *, struct timeval *)); 217void timevalsub __P((struct timeval *, struct timeval *)); |
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| 148#else /* !KERNEL */ 149#include <time.h> 150 151#ifndef _POSIX_SOURCE 152#include <sys/cdefs.h> 153 154__BEGIN_DECLS 155int adjtime __P((const struct timeval *, struct timeval *)); 156int getitimer __P((int, struct itimerval *)); 157int gettimeofday __P((struct timeval *, struct timezone *)); 158int setitimer __P((int, const struct itimerval *, struct itimerval *)); 159int settimeofday __P((const struct timeval *, const struct timezone *)); 160int utimes __P((const char *, const struct timeval *)); 161__END_DECLS 162#endif /* !POSIX */ 163 164#endif /* !KERNEL */ 165 166#endif /* !_SYS_TIME_H_ */ | 218#else /* !KERNEL */ 219#include <time.h> 220 221#ifndef _POSIX_SOURCE 222#include <sys/cdefs.h> 223 224__BEGIN_DECLS 225int adjtime __P((const struct timeval *, struct timeval *)); 226int getitimer __P((int, struct itimerval *)); 227int gettimeofday __P((struct timeval *, struct timezone *)); 228int setitimer __P((int, const struct itimerval *, struct itimerval *)); 229int settimeofday __P((const struct timeval *, const struct timezone *)); 230int utimes __P((const char *, const struct timeval *)); 231__END_DECLS 232#endif /* !POSIX */ 233 234#endif /* !KERNEL */ 235 236#endif /* !_SYS_TIME_H_ */ |