haiku/headers/posix/time.h

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/*
* Copyright 2005-2011, Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _TIME_H_
#define _TIME_H_
#include <sys/types.h>
struct sigevent; /* defined in <signal.h> */
typedef __haiku_int32 clock_t;
typedef __haiku_int32 time_t;
typedef __haiku_int32 suseconds_t;
typedef __haiku_uint32 useconds_t;
#define CLOCKS_PER_SEC 1000000
#define CLK_TCK CLOCKS_PER_SEC
#define MAX_TIMESTR 70
/* maximum length of a string returned by asctime(), and ctime() */
#define CLOCK_MONOTONIC ((clockid_t)0)
/* system-wide monotonic clock (aka system time) */
#define CLOCK_REALTIME ((clockid_t)-1)
/* system-wide real time clock */
#define CLOCK_PROCESS_CPUTIME_ID ((clockid_t)-2)
/* clock measuring the used CPU time of the current process */
#define CLOCK_THREAD_CPUTIME_ID ((clockid_t)-3)
/* clock measuring the used CPU time of the current thread */
#define TIMER_ABSTIME 1 /* absolute timer flag */
struct timespec {
time_t tv_sec; /* seconds */
long tv_nsec; /* and nanoseconds */
};
struct itimerspec {
struct timespec it_interval;
struct timespec it_value;
};
struct tm {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday; /* day of month (1 to 31) */
int tm_mon; /* months since January (0 to 11) */
int tm_year; /* years since 1900 */
int tm_wday; /* days since Sunday (0 to 6, Sunday = 0, ...) */
int tm_yday; /* days since January 1 (0 to 365) */
int tm_isdst; /* daylight savings time (0 == no, >0 == yes, <0 == has to be calculated */
int tm_gmtoff; /* timezone offset to GMT */
char *tm_zone; /* timezone name */
};
/* special timezone support */
extern char *tzname[2];
extern int daylight;
extern long timezone;
#ifdef __cplusplus
extern "C" {
#endif
extern clock_t clock(void);
extern double difftime(time_t time1, time_t time2);
extern time_t mktime(struct tm *tm);
extern time_t time(time_t *timer);
extern char *asctime(const struct tm *tm);
extern char *asctime_r(const struct tm *timep, char *buffer);
extern char *ctime(const time_t *timer);
extern char *ctime_r(const time_t *timer, char *buffer);
extern struct tm *gmtime(const time_t *timer);
extern struct tm *gmtime_r(const time_t *timer, struct tm *tm);
extern struct tm *localtime(const time_t *timer);
extern struct tm *localtime_r(const time_t *timer, struct tm *tm);
extern int nanosleep(const struct timespec *, struct timespec *);
extern size_t strftime(char *buffer, size_t maxSize, const char *format,
const struct tm *tm);
extern char *strptime(const char *buf, const char *format, struct tm *tm);
/* clock functions */
int clock_getres(clockid_t clockID, struct timespec* resolution);
int clock_gettime(clockid_t clockID, struct timespec* time);
int clock_settime(clockid_t clockID, const struct timespec* time);
int clock_nanosleep(clockid_t clockID, int flags,
const struct timespec* time, struct timespec* remainingTime);
int clock_getcpuclockid(pid_t pid, clockid_t* _clockID);
/* timer functions */
int timer_create(clockid_t clockID, struct sigevent* event,
timer_t* timerID);
int timer_delete(timer_t timerID);
int timer_gettime(timer_t timerID, struct itimerspec* value);
int timer_settime(timer_t timerID, int flags,
const struct itimerspec* value, struct itimerspec* oldValue);
int timer_getoverrun(timer_t timerID);
/* special timezone support */
extern void tzset(void);
/* non-POSIX */
extern int stime(const time_t *t);
#ifdef __cplusplus
}
#endif
#endif /* _TIME_H_ */