1 /* 2 * Copyright 2005-2011, Haiku, Inc. All Rights Reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _TIME_H_ 6 #define _TIME_H_ 7 8 9 #include <sys/types.h> 10 11 12 struct sigevent; /* defined in <signal.h> */ 13 14 15 typedef __haiku_int32 clock_t; 16 typedef __haiku_int32 suseconds_t; 17 typedef __haiku_uint32 useconds_t; 18 19 #if defined(__i386__) && !defined(__x86_64__) 20 typedef __haiku_int32 time_t; 21 #else 22 typedef __haiku_int64 time_t; 23 #endif 24 25 26 #define CLOCKS_PER_SEC 1000000 27 #define CLK_TCK CLOCKS_PER_SEC 28 #define TIME_UTC 1 29 30 #define MAX_TIMESTR 70 31 /* maximum length of a string returned by asctime(), and ctime() */ 32 33 #define CLOCK_MONOTONIC ((clockid_t)0) 34 /* system-wide monotonic clock (aka system time) */ 35 #define CLOCK_REALTIME ((clockid_t)-1) 36 /* system-wide real time clock */ 37 #define CLOCK_PROCESS_CPUTIME_ID ((clockid_t)-2) 38 /* clock measuring the used CPU time of the current process */ 39 #define CLOCK_THREAD_CPUTIME_ID ((clockid_t)-3) 40 /* clock measuring the used CPU time of the current thread */ 41 42 #define TIMER_ABSTIME 1 /* absolute timer flag */ 43 44 45 struct timespec { 46 time_t tv_sec; /* seconds */ 47 long tv_nsec; /* and nanoseconds */ 48 }; 49 50 struct itimerspec { 51 struct timespec it_interval; 52 struct timespec it_value; 53 }; 54 55 struct tm { 56 int tm_sec; 57 int tm_min; 58 int tm_hour; 59 int tm_mday; /* day of month (1 to 31) */ 60 int tm_mon; /* months since January (0 to 11) */ 61 int tm_year; /* years since 1900 */ 62 int tm_wday; /* days since Sunday (0 to 6, Sunday = 0, ...) */ 63 int tm_yday; /* days since January 1 (0 to 365) */ 64 int tm_isdst; /* daylight savings time (0 == no, >0 == yes, <0 == has to be calculated */ 65 int tm_gmtoff; /* timezone offset to GMT */ 66 char *tm_zone; /* timezone name */ 67 }; 68 69 70 /* special timezone support */ 71 extern char *tzname[2]; 72 extern int daylight; 73 extern long timezone; 74 75 76 #ifdef __cplusplus 77 extern "C" { 78 #endif 79 80 extern clock_t clock(void); 81 extern double difftime(time_t time1, time_t time2); 82 extern time_t mktime(struct tm *tm); 83 extern time_t time(time_t *timer); 84 extern char *asctime(const struct tm *tm); 85 extern char *asctime_r(const struct tm *timep, char *buffer); 86 extern char *ctime(const time_t *timer); 87 extern char *ctime_r(const time_t *timer, char *buffer); 88 extern struct tm *gmtime(const time_t *timer); 89 extern struct tm *gmtime_r(const time_t *timer, struct tm *tm); 90 extern struct tm *localtime(const time_t *timer); 91 extern struct tm *localtime_r(const time_t *timer, struct tm *tm); 92 extern int nanosleep(const struct timespec *, struct timespec *); 93 extern size_t strftime(char *buffer, size_t maxSize, const char *format, 94 const struct tm *tm); 95 extern char *strptime(const char *buf, const char *format, struct tm *tm); 96 97 /* clock functions */ 98 int clock_getres(clockid_t clockID, struct timespec* resolution); 99 int clock_gettime(clockid_t clockID, struct timespec* _time); 100 int clock_settime(clockid_t clockID, const struct timespec* _time); 101 int clock_nanosleep(clockid_t clockID, int flags, 102 const struct timespec* _time, struct timespec* remainingTime); 103 int clock_getcpuclockid(pid_t pid, clockid_t* _clockID); 104 105 /* timer functions */ 106 int timer_create(clockid_t clockID, struct sigevent* event, 107 timer_t* timerID); 108 int timer_delete(timer_t timerID); 109 int timer_gettime(timer_t timerID, struct itimerspec* value); 110 int timer_settime(timer_t timerID, int flags, 111 const struct itimerspec* value, struct itimerspec* oldValue); 112 int timer_getoverrun(timer_t timerID); 113 114 /* C11 timespec */ 115 int timespec_get(struct timespec *ts, int base); 116 117 /* special timezone support */ 118 extern void tzset(void); 119 120 /* non-POSIX */ 121 extern int stime(const time_t *t); 122 123 #ifdef __cplusplus 124 } 125 #endif 126 127 128 #endif /* _TIME_H_ */ 129