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607ca46e DH |
1 | #ifndef _UAPI_LINUX_TIME_H |
2 | #define _UAPI_LINUX_TIME_H | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | ||
7 | #ifndef _STRUCT_TIMESPEC | |
8 | #define _STRUCT_TIMESPEC | |
9 | struct timespec { | |
10 | __kernel_time_t tv_sec; /* seconds */ | |
11 | long tv_nsec; /* nanoseconds */ | |
12 | }; | |
13 | #endif | |
14 | ||
15 | struct timeval { | |
16 | __kernel_time_t tv_sec; /* seconds */ | |
17 | __kernel_suseconds_t tv_usec; /* microseconds */ | |
18 | }; | |
19 | ||
20 | struct timezone { | |
21 | int tz_minuteswest; /* minutes west of Greenwich */ | |
22 | int tz_dsttime; /* type of dst correction */ | |
23 | }; | |
24 | ||
25 | ||
26 | /* | |
27 | * Names of the interval timers, and structure | |
28 | * defining a timer setting: | |
29 | */ | |
30 | #define ITIMER_REAL 0 | |
31 | #define ITIMER_VIRTUAL 1 | |
32 | #define ITIMER_PROF 2 | |
33 | ||
34 | struct itimerspec { | |
35 | struct timespec it_interval; /* timer period */ | |
36 | struct timespec it_value; /* timer expiration */ | |
37 | }; | |
38 | ||
39 | struct itimerval { | |
40 | struct timeval it_interval; /* timer interval */ | |
41 | struct timeval it_value; /* current value */ | |
42 | }; | |
43 | ||
44 | /* | |
45 | * The IDs of the various system clocks (for POSIX.1b interval timers): | |
46 | */ | |
47 | #define CLOCK_REALTIME 0 | |
48 | #define CLOCK_MONOTONIC 1 | |
49 | #define CLOCK_PROCESS_CPUTIME_ID 2 | |
50 | #define CLOCK_THREAD_CPUTIME_ID 3 | |
51 | #define CLOCK_MONOTONIC_RAW 4 | |
52 | #define CLOCK_REALTIME_COARSE 5 | |
53 | #define CLOCK_MONOTONIC_COARSE 6 | |
54 | #define CLOCK_BOOTTIME 7 | |
55 | #define CLOCK_REALTIME_ALARM 8 | |
56 | #define CLOCK_BOOTTIME_ALARM 9 | |
57 | ||
58 | /* | |
59 | * The IDs of various hardware clocks: | |
60 | */ | |
61 | #define CLOCK_SGI_CYCLE 10 | |
62 | #define MAX_CLOCKS 16 | |
63 | #define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC) | |
64 | #define CLOCKS_MONO CLOCK_MONOTONIC | |
65 | ||
66 | /* | |
67 | * The various flags for setting POSIX.1b interval timers: | |
68 | */ | |
69 | #define TIMER_ABSTIME 0x01 | |
70 | ||
71 | #endif /* _UAPI_LINUX_TIME_H */ |