1 | #ifndef _SYS_TIME_H
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2 | #define _SYS_TIME_H
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3 | #ifdef __cplusplus
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4 | extern "C" {
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5 | #endif
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6 |
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7 | #include <features.h>
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8 |
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9 | #include <sys/select.h>
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10 |
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11 | int gettimeofday (struct timeval *__restrict, void *__restrict);
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12 |
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13 | #define ITIMER_REAL 0
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14 | #define ITIMER_VIRTUAL 1
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15 | #define ITIMER_PROF 2
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16 |
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17 | struct itimerval {
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18 | struct timeval it_interval;
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19 | struct timeval it_value;
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20 | };
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21 |
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22 | int getitimer (int, struct itimerval *);
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23 | int setitimer (int, const struct itimerval *__restrict, struct itimerval *__restrict);
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24 | int utimes (const char *, const struct timeval [2]);
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25 |
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26 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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27 | struct timezone {
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28 | int tz_minuteswest;
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29 | int tz_dsttime;
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30 | };
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31 | int futimes(int, const struct timeval [2]);
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32 | int futimesat(int, const char *, const struct timeval [2]);
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33 | int lutimes(const char *, const struct timeval [2]);
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34 | int settimeofday(const struct timeval *, const struct timezone *);
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35 | int adjtime (const struct timeval *, struct timeval *);
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36 | #define timerisset(t) ((t)->tv_sec || (t)->tv_usec)
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37 | #define timerclear(t) ((t)->tv_sec = (t)->tv_usec = 0)
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38 | #define timercmp(s,t,op) ((s)->tv_sec == (t)->tv_sec ? \
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39 | (s)->tv_usec op (t)->tv_usec : (s)->tv_sec op (t)->tv_sec)
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40 | #define timeradd(s,t,a) (void) ( (a)->tv_sec = (s)->tv_sec + (t)->tv_sec, \
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41 | ((a)->tv_usec = (s)->tv_usec + (t)->tv_usec) >= 1000000 && \
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42 | ((a)->tv_usec -= 1000000, (a)->tv_sec++) )
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43 | #define timersub(s,t,a) (void) ( (a)->tv_sec = (s)->tv_sec - (t)->tv_sec, \
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44 | ((a)->tv_usec = (s)->tv_usec - (t)->tv_usec) < 0 && \
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45 | ((a)->tv_usec += 1000000, (a)->tv_sec--) )
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46 | #endif
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47 |
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48 | #if defined(_GNU_SOURCE)
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49 | #define TIMEVAL_TO_TIMESPEC(tv, ts) ( \
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50 | (ts)->tv_sec = (tv)->tv_sec, \
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51 | (ts)->tv_nsec = (tv)->tv_usec * 1000, \
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52 | (void)0 )
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53 | #define TIMESPEC_TO_TIMEVAL(tv, ts) ( \
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54 | (tv)->tv_sec = (ts)->tv_sec, \
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55 | (tv)->tv_usec = (ts)->tv_nsec / 1000, \
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56 | (void)0 )
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57 | #endif
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58 |
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59 | #ifdef __cplusplus
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60 | }
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61 | #endif
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62 | #endif
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