]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_TIME_H |
2 | #define _LINUX_TIME_H | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | #ifdef __KERNEL__ | |
57a55875 | 7 | # include <linux/seqlock.h> |
1da177e4 LT |
8 | #endif |
9 | ||
10 | #ifndef _STRUCT_TIMESPEC | |
11 | #define _STRUCT_TIMESPEC | |
12 | struct timespec { | |
13 | time_t tv_sec; /* seconds */ | |
14 | long tv_nsec; /* nanoseconds */ | |
15 | }; | |
57a55875 | 16 | #endif |
1da177e4 LT |
17 | |
18 | struct timeval { | |
19 | time_t tv_sec; /* seconds */ | |
20 | suseconds_t tv_usec; /* microseconds */ | |
21 | }; | |
22 | ||
23 | struct timezone { | |
24 | int tz_minuteswest; /* minutes west of Greenwich */ | |
25 | int tz_dsttime; /* type of dst correction */ | |
26 | }; | |
27 | ||
28 | #ifdef __KERNEL__ | |
29 | ||
57a55875 IM |
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 | |
1da177e4 | 35 | |
57a55875 IM |
36 | static __inline__ int timespec_equal(struct timespec *a, struct timespec *b) |
37 | { | |
1da177e4 | 38 | return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec); |
57a55875 | 39 | } |
1da177e4 | 40 | |
f4818900 IM |
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); | |
44 | ||
45 | extern void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec); | |
1da177e4 LT |
46 | |
47 | extern struct timespec xtime; | |
48 | extern struct timespec wall_to_monotonic; | |
49 | extern seqlock_t xtime_lock; | |
50 | ||
51 | static inline unsigned long get_seconds(void) | |
57a55875 | 52 | { |
1da177e4 LT |
53 | return xtime.tv_sec; |
54 | } | |
55 | ||
56 | struct timespec current_kernel_time(void); | |
57 | ||
57a55875 IM |
58 | #define CURRENT_TIME (current_kernel_time()) |
59 | #define CURRENT_TIME_SEC ((struct timespec) { xtime.tv_sec, 0 }) | |
1da177e4 LT |
60 | |
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); | |
57a55875 | 64 | extern void clock_was_set(void); // call whenever the clock is set |
1da177e4 | 65 | extern int do_posix_clock_monotonic_gettime(struct timespec *tp); |
57a55875 | 66 | extern long do_utimes(char __user *filename, struct timeval *times); |
1da177e4 | 67 | struct itimerval; |
57a55875 IM |
68 | extern int do_setitimer(int which, struct itimerval *value, |
69 | struct itimerval *ovalue); | |
1da177e4 | 70 | extern int do_getitimer(int which, struct itimerval *value); |
57a55875 | 71 | extern void getnstimeofday(struct timespec *tv); |
64123fd4 | 72 | extern void getnstimestamp(struct timespec *ts); |
1da177e4 LT |
73 | |
74 | extern struct timespec timespec_trunc(struct timespec t, unsigned gran); | |
75 | ||
1da177e4 LT |
76 | #endif /* __KERNEL__ */ |
77 | ||
78 | #define NFDBITS __NFDBITS | |
79 | ||
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) | |
85 | ||
86 | /* | |
87 | * Names of the interval timers, and structure | |
57a55875 | 88 | * defining a timer setting: |
1da177e4 | 89 | */ |
57a55875 IM |
90 | #define ITIMER_REAL 0 |
91 | #define ITIMER_VIRTUAL 1 | |
92 | #define ITIMER_PROF 2 | |
1da177e4 | 93 | |
57a55875 IM |
94 | struct itimerspec { |
95 | struct timespec it_interval; /* timer period */ | |
96 | struct timespec it_value; /* timer expiration */ | |
1da177e4 LT |
97 | }; |
98 | ||
57a55875 IM |
99 | struct itimerval { |
100 | struct timeval it_interval; /* timer interval */ | |
101 | struct timeval it_value; /* current value */ | |
1da177e4 LT |
102 | }; |
103 | ||
1da177e4 | 104 | /* |
57a55875 | 105 | * The IDs of the various system clocks (for POSIX.1b interval timers): |
1da177e4 | 106 | */ |
1ad106ca IM |
107 | #define CLOCK_REALTIME 0 |
108 | #define CLOCK_MONOTONIC 1 | |
109 | #define CLOCK_PROCESS_CPUTIME_ID 2 | |
110 | #define CLOCK_THREAD_CPUTIME_ID 3 | |
1da177e4 LT |
111 | |
112 | /* | |
57a55875 | 113 | * The IDs of various hardware clocks: |
1da177e4 | 114 | */ |
1ad106ca IM |
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 | |
1da177e4 LT |
119 | |
120 | /* | |
57a55875 | 121 | * The various flags for setting POSIX.1b interval timers: |
1da177e4 | 122 | */ |
1ad106ca | 123 | #define TIMER_ABSTIME 0x01 |
1da177e4 LT |
124 | |
125 | #endif |