1 /* time.h -- An implementation of the standard Unix <sys/time.h> file. 2 Written by Geoffrey Noer <noer@cygnus.com> 3 Public domain; no rights reserved. */ 4 5 #ifndef _SYS_TIME_H_ 6 #define _SYS_TIME_H_ 7 8 #include <_ansi.h> 9 #include <sys/types.h> 10 11 #ifdef __cplusplus 12 extern "C" { 13 #endif 14 15 #ifndef _WINSOCK_H 16 struct timeval { 17 long tv_sec; 18 long tv_usec; 19 }; 20 21 struct timezone { 22 int tz_minuteswest; 23 int tz_dsttime; 24 }; 25 26 #ifdef __CYGWIN__ 27 #include <sys/select.h> 28 #endif /* __CYGWIN__ */ 29 30 #endif /* _WINSOCK_H */ 31 32 #define ITIMER_REAL 0 33 #define ITIMER_VIRTUAL 1 34 #define ITIMER_PROF 2 35 36 struct itimerval { 37 struct timeval it_interval; 38 struct timeval it_value; 39 }; 40 41 /* BSD time macros used by RTEMS code */ 42 #if defined(__rtems__) 43 44 /* Convenience macros for operations on timevals. 45 NOTE: `timercmp' does not work for >= or <=. */ 46 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 47 #define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 48 #define timercmp(a, b, CMP) \ 49 (((a)->tv_sec == (b)->tv_sec) ? \ 50 ((a)->tv_usec CMP (b)->tv_usec) : \ 51 ((a)->tv_sec CMP (b)->tv_sec)) 52 #define timeradd(a, b, result) \ 53 do { \ 54 (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ 55 (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \ 56 if ((result)->tv_usec >= 1000000) \ 57 { \ 58 ++(result)->tv_sec; \ 59 (result)->tv_usec -= 1000000; \ 60 } \ 61 } while (0) 62 #define timersub(a, b, result) \ 63 do { \ 64 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ 65 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ 66 if ((result)->tv_usec < 0) { \ 67 --(result)->tv_sec; \ 68 (result)->tv_usec += 1000000; \ 69 } \ 70 } while (0) 71 #endif 72 73 int _EXFUN(gettimeofday, (struct timeval *__p, struct timezone *__z)); 74 int _EXFUN(settimeofday, (const struct timeval *, const struct timezone *)); 75 int _EXFUN(utimes, (const char *__path, struct timeval *__tvp)); 76 int _EXFUN(getitimer, (int __which, struct itimerval *__value)); 77 int _EXFUN(setitimer, (int __which, const struct itimerval *__value, 78 struct itimerval *__ovalue)); 79 80 #ifdef __cplusplus 81 } 82 #endif 83 #endif /* _SYS_TIME_H_ */ |