Commit | Line | Data |
---|---|---|
59703a43 C |
1 | /* time.h 6.1 83/07/29 */ |
2 | ||
3 | /* | |
4 | * Structure returned by gettimeofday(2) system call, | |
5 | * and used in other calls. | |
6 | */ | |
7 | struct timeval { | |
8 | long tv_sec; /* seconds */ | |
9 | long tv_usec; /* and microseconds */ | |
10 | }; | |
11 | ||
12 | struct timezone { | |
13 | int tz_minuteswest; /* minutes west of Greenwich */ | |
14 | int tz_dsttime; /* type of dst correction */ | |
15 | }; | |
16 | #define DST_NONE 0 /* not on dst */ | |
17 | #define DST_USA 1 /* USA style dst */ | |
18 | #define DST_AUST 2 /* Australian style dst */ | |
19 | #define DST_WET 3 /* Western European dst */ | |
20 | #define DST_MET 4 /* Middle European dst */ | |
21 | #define DST_EET 5 /* Eastern European dst */ | |
22 | ||
23 | /* | |
24 | * Operations on timevals. | |
25 | * | |
26 | * NB: timercmp does not work for >= or <=. | |
27 | */ | |
28 | #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) | |
29 | #define timercmp(tvp, uvp, cmp) \ | |
30 | ((tvp)->tv_sec cmp (uvp)->tv_sec || \ | |
31 | (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec) | |
32 | #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 | |
33 | ||
34 | /* | |
35 | * Names of the interval timers, and structure | |
36 | * defining a timer setting. | |
37 | */ | |
38 | #define ITIMER_REAL 0 | |
39 | #define ITIMER_VIRTUAL 1 | |
40 | #define ITIMER_PROF 2 | |
41 | ||
42 | struct itimerval { | |
43 | struct timeval it_interval; /* timer interval */ | |
44 | struct timeval it_value; /* current value */ | |
45 | }; | |
46 | ||
47 | /* | |
48 | * Structure returned by gmtime and localtime calls (see ctime(3)). | |
49 | */ | |
50 | struct tm { | |
51 | int tm_sec; | |
52 | int tm_min; | |
53 | int tm_hour; | |
54 | int tm_mday; | |
55 | int tm_mon; | |
56 | int tm_year; | |
57 | int tm_wday; | |
58 | int tm_yday; | |
59 | int tm_isdst; | |
60 | }; | |
61 | ||
62 | #ifndef KERNEL | |
63 | extern struct tm *gmtime(), *localtime(); | |
64 | extern char *asctime(), *ctime(); | |
65 | #endif |