4 #include <linux/types.h>
7 # include <linux/seqlock.h>
10 #ifndef _STRUCT_TIMESPEC
11 #define _STRUCT_TIMESPEC
13 time_t tv_sec; /* seconds */
14 long tv_nsec; /* nanoseconds */
19 time_t tv_sec; /* seconds */
20 suseconds_t tv_usec; /* microseconds */
24 int tz_minuteswest; /* minutes west of Greenwich */
25 int tz_dsttime; /* type of dst correction */
30 /* Parameters used to convert the timespec values: */
31 #define MSEC_PER_SEC 1000L
32 #define USEC_PER_SEC 1000000L
33 #define NSEC_PER_SEC 1000000000L
34 #define NSEC_PER_USEC 1000L
36 static __inline__ int timespec_equal(struct timespec *a, struct timespec *b)
38 return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec);
41 extern unsigned long mktime(const unsigned int year, const unsigned int mon,
42 const unsigned int day, const unsigned int hour,
43 const unsigned int min, const unsigned int sec);
45 extern void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec);
47 extern struct timespec xtime;
48 extern struct timespec wall_to_monotonic;
49 extern seqlock_t xtime_lock;
51 static inline unsigned long get_seconds(void)
56 struct timespec current_kernel_time(void);
58 #define CURRENT_TIME (current_kernel_time())
59 #define CURRENT_TIME_SEC ((struct timespec) { xtime.tv_sec, 0 })
61 extern void do_gettimeofday(struct timeval *tv);
62 extern int do_settimeofday(struct timespec *tv);
63 extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);
64 extern void clock_was_set(void); // call whenever the clock is set
65 extern int do_posix_clock_monotonic_gettime(struct timespec *tp);
66 extern long do_utimes(char __user *filename, struct timeval *times);
68 extern int do_setitimer(int which, struct itimerval *value,
69 struct itimerval *ovalue);
70 extern int do_getitimer(int which, struct itimerval *value);
71 extern void getnstimeofday(struct timespec *tv);
72 extern void getnstimestamp(struct timespec *ts);
74 extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
76 #endif /* __KERNEL__ */
78 #define NFDBITS __NFDBITS
80 #define FD_SETSIZE __FD_SETSIZE
81 #define FD_SET(fd,fdsetp) __FD_SET(fd,fdsetp)
82 #define FD_CLR(fd,fdsetp) __FD_CLR(fd,fdsetp)
83 #define FD_ISSET(fd,fdsetp) __FD_ISSET(fd,fdsetp)
84 #define FD_ZERO(fdsetp) __FD_ZERO(fdsetp)
87 * Names of the interval timers, and structure
88 * defining a timer setting:
91 #define ITIMER_VIRTUAL 1
95 struct timespec it_interval; /* timer period */
96 struct timespec it_value; /* timer expiration */
100 struct timeval it_interval; /* timer interval */
101 struct timeval it_value; /* current value */
105 * The IDs of the various system clocks (for POSIX.1b interval timers):
107 #define CLOCK_REALTIME 0
108 #define CLOCK_MONOTONIC 1
109 #define CLOCK_PROCESS_CPUTIME_ID 2
110 #define CLOCK_THREAD_CPUTIME_ID 3
113 * The IDs of various hardware clocks:
115 #define CLOCK_SGI_CYCLE 10
116 #define MAX_CLOCKS 16
117 #define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC)
118 #define CLOCKS_MONO CLOCK_MONOTONIC
121 * The various flags for setting POSIX.1b interval timers:
123 #define TIMER_ABSTIME 0x01