/* * time.h * * Struct and function declarations for dealing with time. */ #ifndef _TIME_H_ #include "_ansi.h" #include #include #ifdef __cplusplus extern "C" { #endif #ifndef NULL #define NULL 0 #endif /* Get _CLOCKS_PER_SEC_ */ #include #include /* Time Value Specification Structures, P1003.1b-1993, p. 261 */ #ifndef _STRUCT_TIMESPEC #define _STRUCT_TIMESPEC struct timespec { time_t tv_sec; /* Seconds */ long tv_nsec; /* Nanoseconds */ }; #endif /* !_STRUCT_TIMESPEC */ #ifndef __need_timespec #define _TIME_H_ 1 #ifndef _CLOCKS_PER_SEC_ #define _CLOCKS_PER_SEC_ 1000 #endif #define CLOCKS_PER_SEC _CLOCKS_PER_SEC_ #define CLK_TCK CLOCKS_PER_SEC #define __need_size_t #include struct tm { int tm_sec; int tm_min; int tm_hour; int tm_mday; int tm_mon; int tm_year; int tm_wday; int tm_yday; int tm_isdst; }; #ifndef __timer_t_defined # define __timer_t_defined 1 typedef __timer_t timer_t; #endif clock_t clock (void); double difftime (time_t _time2, time_t _time1); time_t mktime (struct tm *_timeptr); time_t time (time_t *_timer); #ifndef _REENT_ONLY char *asctime (const struct tm *_tblock); char *ctime (const time_t *_time); struct tm *gmtime (const time_t *_timer); struct tm *localtime (const time_t *_timer); #endif size_t strftime (char *_s, size_t _maxsize, const char *_fmt, const struct tm *_t); char *asctime_r (const struct tm *, char *); char *ctime_r (const time_t *, char *); struct tm *gmtime_r (const time_t *, struct tm *); struct tm *localtime_r (const time_t *, struct tm *); #ifndef __STRICT_ANSI__ char *strptime (const char *, const char *, struct tm *); void tzset (void); void _tzset_r (struct _reent *); typedef struct __tzrule_struct { char ch; int m; int n; int d; int s; time_t change; long offset; /* Match type of _timezone. */ } __tzrule_type; typedef struct __tzinfo_struct { int __tznorth; int __tzyear; __tzrule_type __tzrule[2]; } __tzinfo_type; __tzinfo_type *__gettzinfo (void); /* getdate functions */ #ifndef _REENT_ONLY #define getdate_err (*__getdate_err()) int *__getdate_err (void); struct tm * getdate (const char *); /* getdate_err is set to one of the following values to indicate the error. 1 the DATEMSK environment variable is null or undefined, 2 the template file cannot be opened for reading, 3 failed to get file status information, 4 the template file is not a regular file, 5 an error is encountered while reading the template file, 6 memory allication failed (not enough memory available), 7 there is no line in the template that matches the input, 8 invalid input specification */ #endif /* !_REENT_ONLY */ /* getdate_r returns the error code as above */ int getdate_r (const char *, struct tm *); /* defines for the opengroup specifications Derived from Issue 1 of the SVID. */ extern __IMPORT long _timezone; extern __IMPORT int _daylight; extern __IMPORT char *_tzname[2]; /* POSIX defines the external tzname being defined in time.h */ #ifndef tzname #define tzname _tzname #endif #endif /* !__STRICT_ANSI__ */ #include #if defined(_POSIX_TIMERS) #include /* Clocks, P1003.1b-1993, p. 263 */ int clock_settime (clockid_t clock_id, const struct timespec *tp); int clock_gettime (clockid_t clock_id, struct timespec *tp); int clock_getres (clockid_t clock_id, struct timespec *res); /* Create a Per-Process Timer, P1003.1b-1993, p. 264 */ int timer_create (clockid_t clock_id, struct sigevent *evp, timer_t *timerid); /* Delete a Per_process Timer, P1003.1b-1993, p. 266 */ int timer_delete (timer_t timerid); /* Per-Process Timers, P1003.1b-1993, p. 267 */ int timer_settime (timer_t timerid, int flags, const struct itimerspec *value, struct itimerspec *ovalue); int timer_gettime (timer_t timerid, struct itimerspec *value); int timer_getoverrun (timer_t timerid); /* High Resolution Sleep, P1003.1b-1993, p. 269 */ int nanosleep (const struct timespec *rqtp, struct timespec *rmtp); #endif /* _POSIX_TIMERS */ /* CPU-time Clock Attributes, P1003.4b/D8, p. 54 */ /* values for the clock enable attribute */ #define CLOCK_ENABLED 1 /* clock is enabled, i.e. counting execution time */ #define CLOCK_DISABLED 0 /* clock is disabled */ /* values for the pthread cputime_clock_allowed attribute */ #define CLOCK_ALLOWED 1 /* If a thread is created with this value a */ /* CPU-time clock attached to that thread */ /* shall be accessible. */ #define CLOCK_DISALLOWED 0 /* If a thread is created with this value, the */ /* thread shall not have a CPU-time clock */ /* accessible. */ /* Manifest Constants, P1003.1b-1993, p. 262 */ #define CLOCK_REALTIME (clockid_t)1 /* Flag indicating time is "absolute" with respect to the clock associated with a time. */ #define TIMER_ABSTIME 4 /* Manifest Constants, P1003.4b/D8, p. 55 */ #if defined(_POSIX_CPUTIME) /* When used in a clock or timer function call, this is interpreted as the identifier of the CPU_time clock associated with the PROCESS making the function call. */ #define CLOCK_PROCESS_CPUTIME_ID (clockid_t)2 #endif #if defined(_POSIX_THREAD_CPUTIME) /* When used in a clock or timer function call, this is interpreted as the identifier of the CPU_time clock associated with the THREAD making the function call. */ #define CLOCK_THREAD_CPUTIME_ID (clockid_t)3 #endif #if defined(_POSIX_CPUTIME) /* Accessing a Process CPU-time CLock, P1003.4b/D8, p. 55 */ int clock_getcpuclockid (pid_t pid, clockid_t *clock_id); #endif /* _POSIX_CPUTIME */ #if defined(_POSIX_CPUTIME) || defined(_POSIX_THREAD_CPUTIME) /* CPU-time Clock Attribute Access, P1003.4b/D8, p. 56 */ int clock_setenable_attr (clockid_t clock_id, int attr); int clock_getenable_attr (clockid_t clock_id, int *attr); #endif /* _POSIX_CPUTIME or _POSIX_THREAD_CPUTIME */ #ifdef __cplusplus } #endif #endif /* ! __need_timespec */ #undef __need_timespec #endif /* _TIME_H_ */