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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | #ifndef _LINUX_TIME_H #define _LINUX_TIME_H #include <linux/types.h> #ifdef __KERNEL__ #include <linux/seqlock.h> #endif #ifndef _STRUCT_TIMESPEC #define _STRUCT_TIMESPEC struct timespec { time_t tv_sec; /* seconds */ long tv_nsec; /* nanoseconds */ }; #endif /* _STRUCT_TIMESPEC */ struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec; /* microseconds */ }; struct timezone { int tz_minuteswest; /* minutes west of Greenwich */ int tz_dsttime; /* type of dst correction */ }; #ifdef __KERNEL__ /* Parameters used to convert the timespec values */ #ifndef USEC_PER_SEC #define USEC_PER_SEC (1000000L) #endif #ifndef NSEC_PER_SEC #define NSEC_PER_SEC (1000000000L) #endif #ifndef NSEC_PER_USEC #define NSEC_PER_USEC (1000L) #endif static __inline__ int timespec_equal(struct timespec *a, struct timespec *b) { return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec); } /* Converts Gregorian date to seconds since 1970-01-01 00:00:00. * Assumes input in normal date format, i.e. 1980-12-31 23:59:59 * => year=1980, mon=12, day=31, hour=23, min=59, sec=59. * * [For the Julian calendar (which was used in Russia before 1917, * Britain & colonies before 1752, anywhere else before 1582, * and is still in use by some communities) leave out the * -year/100+year/400 terms, and add 10.] * * This algorithm was first published by Gauss (I think). * * WARNING: this function will overflow on 2106-02-07 06:28:16 on * machines were long is 32-bit! (However, as time_t is signed, we * will already get problems at other places on 2038-01-19 03:14:08) */ static inline unsigned long mktime (unsigned int year, unsigned int mon, unsigned int day, unsigned int hour, unsigned int min, unsigned int sec) { if (0 >= (int) (mon -= 2)) { /* 1..12 -> 11,12,1..10 */ mon += 12; /* Puts Feb last since it has leap day */ year -= 1; } return ((( (unsigned long) (year/4 - year/100 + year/400 + 367*mon/12 + day) + year*365 - 719499 )*24 + hour /* now have hours */ )*60 + min /* now have minutes */ )*60 + sec; /* finally seconds */ } extern struct timespec xtime; extern struct timespec wall_to_monotonic; extern seqlock_t xtime_lock; static inline unsigned long get_seconds(void) { return xtime.tv_sec; } struct timespec current_kernel_time(void); #define CURRENT_TIME (current_kernel_time()) #define CURRENT_TIME_SEC ((struct timespec) { xtime.tv_sec, 0 }) extern void do_gettimeofday(struct timeval *tv); extern int do_settimeofday(struct timespec *tv); extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz); extern void clock_was_set(void); // call when ever the clock is set extern int do_posix_clock_monotonic_gettime(struct timespec *tp); extern long do_nanosleep(struct timespec *t); extern long do_utimes(char __user * filename, struct timeval * times); struct itimerval; extern int do_setitimer(int which, struct itimerval *value, struct itimerval *ovalue); extern int do_getitimer(int which, struct itimerval *value); extern void getnstimeofday (struct timespec *tv); extern struct timespec timespec_trunc(struct timespec t, unsigned gran); static inline void set_normalized_timespec (struct timespec *ts, time_t sec, long nsec) { while (nsec > NSEC_PER_SEC) { nsec -= NSEC_PER_SEC; ++sec; } while (nsec < 0) { nsec += NSEC_PER_SEC; --sec; } ts->tv_sec = sec; ts->tv_nsec = nsec; } #endif /* __KERNEL__ */ #define NFDBITS __NFDBITS #define FD_SETSIZE __FD_SETSIZE #define FD_SET(fd,fdsetp) __FD_SET(fd,fdsetp) #define FD_CLR(fd,fdsetp) __FD_CLR(fd,fdsetp) #define FD_ISSET(fd,fdsetp) __FD_ISSET(fd,fdsetp) #define FD_ZERO(fdsetp) __FD_ZERO(fdsetp) /* * Names of the interval timers, and structure * defining a timer setting. */ #define ITIMER_REAL 0 #define ITIMER_VIRTUAL 1 #define ITIMER_PROF 2 struct itimerspec { struct timespec it_interval; /* timer period */ struct timespec it_value; /* timer expiration */ }; struct itimerval { struct timeval it_interval; /* timer interval */ struct timeval it_value; /* current value */ }; /* * The IDs of the various system clocks (for POSIX.1b interval timers). */ #define CLOCK_REALTIME 0 #define CLOCK_MONOTONIC 1 #define CLOCK_PROCESS_CPUTIME_ID 2 #define CLOCK_THREAD_CPUTIME_ID 3 #define CLOCK_REALTIME_HR 4 #define CLOCK_MONOTONIC_HR 5 /* * The IDs of various hardware clocks */ #define CLOCK_SGI_CYCLE 10 #define MAX_CLOCKS 16 #define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC | \ CLOCK_REALTIME_HR | CLOCK_MONOTONIC_HR) #define CLOCKS_MONO (CLOCK_MONOTONIC & CLOCK_MONOTONIC_HR) /* * The various flags for setting POSIX.1b interval timers. */ #define TIMER_ABSTIME 0x01 #endif |