85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* time.h -- An implementation of the standard Unix <sys/time.h> file.
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Written by Geoffrey Noer <noer@cygnus.com>
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Public domain; no rights reserved. */
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#ifndef _SYS_TIME_H_
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#define _SYS_TIME_H_
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#include <_ansi.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _WINSOCK_H
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#define _TIMEVAL_DEFINED
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struct timeval {
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time_t tv_sec;
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suseconds_t tv_usec;
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};
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struct timezone {
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int tz_minuteswest;
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int tz_dsttime;
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};
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#ifdef __CYGWIN__
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#include <cygwin/sys_time.h>
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#endif /* __CYGWIN__ */
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#endif /* _WINSOCK_H */
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#define ITIMER_REAL 0
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#define ITIMER_VIRTUAL 1
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#define ITIMER_PROF 2
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struct itimerval {
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struct timeval it_interval;
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struct timeval it_value;
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};
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/* BSD time macros used by RTEMS code */
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#if defined (__rtems__) || defined (__CYGWIN__)
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/* Convenience macros for operations on timevals.
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NOTE: `timercmp' does not work for >= or <=. */
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#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
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#define timercmp(a, b, CMP) \
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(((a)->tv_sec == (b)->tv_sec) ? \
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((a)->tv_usec CMP (b)->tv_usec) : \
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((a)->tv_sec CMP (b)->tv_sec))
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#define timeradd(a, b, result) \
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do { \
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(result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
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(result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
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if ((result)->tv_usec >= 1000000) \
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{ \
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++(result)->tv_sec; \
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(result)->tv_usec -= 1000000; \
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} \
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} while (0)
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#define timersub(a, b, result) \
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do { \
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(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
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(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
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if ((result)->tv_usec < 0) { \
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--(result)->tv_sec; \
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(result)->tv_usec += 1000000; \
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} \
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} while (0)
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#endif /* defined (__rtems__) || defined (__CYGWIN__) */
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int _EXFUN(gettimeofday, (struct timeval *__p, void *__tz));
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int _EXFUN(settimeofday, (const struct timeval *, const struct timezone *));
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int _EXFUN(utimes, (const char *__path, const struct timeval *__tvp));
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int _EXFUN(getitimer, (int __which, struct itimerval *__value));
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int _EXFUN(setitimer, (int __which, const struct itimerval *__value,
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struct itimerval *__ovalue));
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_TIME_H_ */
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