time.h raw

   1  #ifndef _SYS_TIME_H
   2  #define _SYS_TIME_H
   3  #ifdef __cplusplus
   4  extern "C" {
   5  #endif
   6  
   7  #include <features.h>
   8  
   9  #include <sys/select.h>
  10  
  11  int gettimeofday (struct timeval *__restrict, void *__restrict);
  12  
  13  #define ITIMER_REAL    0
  14  #define ITIMER_VIRTUAL 1
  15  #define ITIMER_PROF    2
  16  
  17  struct itimerval {
  18  	struct timeval it_interval;
  19  	struct timeval it_value;
  20  };
  21  
  22  int getitimer (int, struct itimerval *);
  23  int setitimer (int, const struct itimerval *__restrict, struct itimerval *__restrict);
  24  int utimes (const char *, const struct timeval [2]);
  25  
  26  #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  27  struct timezone {
  28  	int tz_minuteswest;
  29  	int tz_dsttime;
  30  };
  31  int futimes(int, const struct timeval [2]);
  32  int futimesat(int, const char *, const struct timeval [2]);
  33  int lutimes(const char *, const struct timeval [2]);
  34  int settimeofday(const struct timeval *, const struct timezone *);
  35  int adjtime (const struct timeval *, struct timeval *);
  36  #define timerisset(t) ((t)->tv_sec || (t)->tv_usec)
  37  #define timerclear(t) ((t)->tv_sec = (t)->tv_usec = 0)
  38  #define timercmp(s,t,op) ((s)->tv_sec == (t)->tv_sec ? \
  39  	(s)->tv_usec op (t)->tv_usec : (s)->tv_sec op (t)->tv_sec)
  40  #define timeradd(s,t,a) (void) ( (a)->tv_sec = (s)->tv_sec + (t)->tv_sec, \
  41  	((a)->tv_usec = (s)->tv_usec + (t)->tv_usec) >= 1000000 && \
  42  	((a)->tv_usec -= 1000000, (a)->tv_sec++) )
  43  #define timersub(s,t,a) (void) ( (a)->tv_sec = (s)->tv_sec - (t)->tv_sec, \
  44  	((a)->tv_usec = (s)->tv_usec - (t)->tv_usec) < 0 && \
  45  	((a)->tv_usec += 1000000, (a)->tv_sec--) )
  46  #endif
  47  
  48  #if defined(_GNU_SOURCE)
  49  #define TIMEVAL_TO_TIMESPEC(tv, ts) ( \
  50  	(ts)->tv_sec = (tv)->tv_sec, \
  51  	(ts)->tv_nsec = (tv)->tv_usec * 1000, \
  52  	(void)0 )
  53  #define TIMESPEC_TO_TIMEVAL(tv, ts) ( \
  54  	(tv)->tv_sec = (ts)->tv_sec, \
  55  	(tv)->tv_usec = (ts)->tv_nsec / 1000, \
  56  	(void)0 )
  57  #endif
  58  
  59  #if _REDIR_TIME64
  60  __REDIR(gettimeofday, __gettimeofday_time64);
  61  __REDIR(getitimer, __getitimer_time64);
  62  __REDIR(setitimer, __setitimer_time64);
  63  __REDIR(utimes, __utimes_time64);
  64  #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  65  __REDIR(futimes, __futimes_time64);
  66  __REDIR(futimesat, __futimesat_time64);
  67  __REDIR(lutimes, __lutimes_time64);
  68  __REDIR(settimeofday, __settimeofday_time64);
  69  __REDIR(adjtime, __adjtime64);
  70  #endif
  71  #endif
  72  
  73  #ifdef __cplusplus
  74  }
  75  #endif
  76  #endif
  77