rt-thread-official/components/libc/compilers/common/sys/time.h

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2020-09-07     Meco Man     combine gcc armcc iccarm
 */
#ifndef _SYS_TIME_H_
#define _SYS_TIME_H_

#include <rtconfig.h>
#include <time.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
 */
#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
#define _TIMESPEC_DEFINED
#endif


#ifndef _TIMEVAL_DEFINED
#define _TIMEVAL_DEFINED
/*
 * Structure returned by gettimeofday(2) system call,
 * and used in other calls.
 */
struct timeval {
    long    tv_sec;     /* seconds */
    long    tv_usec;    /* and microseconds */
};
#endif /* _TIMEVAL_DEFINED */

#if !defined __GNUC__ && !defined __ICCARM__
struct timespec {
    time_t  tv_sec;     /* seconds */
    long    tv_nsec;    /* and nanoseconds */
};
#endif

struct timezone {
  int tz_minuteswest;   /* minutes west of Greenwich */
  int tz_dsttime;       /* type of dst correction */
};

int stime(const time_t *t);
time_t timegm(struct tm * const t);
int gettimeofday(struct timeval *tv, struct timezone *tz);
int settimeofday(const struct timeval *tv, const struct timezone *tz);

#ifdef RT_USING_PTHREADS
/* posix clock and timer */
#define MILLISECOND_PER_SECOND  1000UL
#define MICROSECOND_PER_SECOND  1000000UL
#define NANOSECOND_PER_SECOND   1000000000UL

#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)

#ifndef CLOCK_REALTIME
#define CLOCK_REALTIME      1
#endif

#define CLOCK_CPUTIME_ID    2

#ifndef CLOCK_PROCESS_CPUTIME_ID
#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
#endif
#ifndef CLOCK_THREAD_CPUTIME_ID
#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
#endif

#ifndef CLOCK_MONOTONIC
#define CLOCK_MONOTONIC     4
#endif

int clock_getres  (clockid_t clockid, struct timespec *res);
int clock_gettime (clockid_t clockid, struct timespec *tp);
int clock_settime (clockid_t clockid, const struct timespec *tp);
#endif /*RT_USING_PTHREADS*/

#ifdef __cplusplus
}
#endif

#endif /* _SYS_TIME_H_ */