diff options
Diffstat (limited to 'components/libc/compilers/common/time.c')
| -rw-r--r-- | components/libc/compilers/common/time.c | 1007 |
1 files changed, 0 insertions, 1007 deletions
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c deleted file mode 100644 index 96591113b8..0000000000 --- a/components/libc/compilers/common/time.c +++ /dev/null @@ -1,1007 +0,0 @@ -/* - * Copyright (c) 2006-2022, RT-Thread Development Team - * - * SPDX-License-Identifier: Apache-2.0 - * - * Change Logs: - * Date Author Notes - * 2019-08-21 zhangjun copy from minilibc - * 2020-09-07 Meco Man combine gcc armcc iccarm - * 2021-02-05 Meco Man add timegm() - * 2021-02-07 Meco Man fixed gettimeofday() - * 2021-02-08 Meco Man add settimeofday() stime() - * 2021-02-10 Meco Man add ctime_r() and re-implement ctime() - * 2021-02-11 Meco Man fix bug #3183 - align days[] and months[] to 4 bytes - * 2021-02-12 Meco Man add errno - * 2012-12-08 Bernard <clock_time.c> fix the issue of _timevalue.tv_usec initialization, - * which found by Rob <[email protected]> - * 2021-02-12 Meco Man move all of the functions located in <clock_time.c> to this file - * 2021-03-15 Meco Man fixed a bug of leaking memory in asctime() - * 2021-05-01 Meco Man support fixed timezone - * 2021-07-21 Meco Man implement that change/set timezone APIs - */ - -#include "sys/time.h" -#include <sys/errno.h> -#include <rtthread.h> -#include <rthw.h> -#include <unistd.h> -#ifdef RT_USING_POSIX_DELAY -#include <delay.h> -#endif -#ifdef RT_USING_RTC -#include <rtdevice.h> -#endif - -#define DBG_TAG "time" -#define DBG_LVL DBG_INFO -#include <rtdbg.h> - -#define _WARNING_NO_RTC "Cannot find a RTC device!" - -/* seconds per day */ -#define SPD 24*60*60 - -/* days per month -- nonleap! */ -static const short __spm[13] = -{ - 0, - (31), - (31 + 28), - (31 + 28 + 31), - (31 + 28 + 31 + 30), - (31 + 28 + 31 + 30 + 31), - (31 + 28 + 31 + 30 + 31 + 30), - (31 + 28 + 31 + 30 + 31 + 30 + 31), - (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31), - (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30), - (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31), - (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30), - (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31), -}; - -ALIGN(4) static const char *days = "Sun Mon Tue Wed Thu Fri Sat "; -ALIGN(4) static const char *months = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec "; - -static int __isleap(int year) -{ - /* every fourth year is a leap year except for century years that are - * not divisible by 400. */ - /* return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */ - return (!(year % 4) && ((year % 100) || !(year % 400))); -} - -static void num2str(char *c, int i) -{ - c[0] = i / 10 + '0'; - c[1] = i % 10 + '0'; -} - -/** - * Get time from RTC device (without timezone, UTC+0) - * @param tv: struct timeval - * @return the operation status, RT_EOK on successful - */ -static rt_err_t get_timeval(struct timeval *tv) -{ -#ifdef RT_USING_RTC - static rt_device_t device = RT_NULL; - rt_err_t rst = -RT_ERROR; - - if (tv == RT_NULL) - return -RT_EINVAL; - - /* default is 0 */ - tv->tv_sec = 0; - tv->tv_usec = 0; - - /* optimization: find rtc device only first */ - if (device == RT_NULL) - { - device = rt_device_find("rtc"); - } - - /* read timestamp from RTC device */ - if (device != RT_NULL) - { - if (rt_device_open(device, 0) == RT_EOK) - { - rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec); - rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIMEVAL, tv); - rt_device_close(device); - } - } - else - { - LOG_W(_WARNING_NO_RTC); - return -RT_ENOSYS; - } - - return rst; - -#else - LOG_W(_WARNING_NO_RTC); - return -RT_ENOSYS; -#endif /* RT_USING_RTC */ -} - -/** - * Set time to RTC device (without timezone) - * @param tv: struct timeval - * @return the operation status, RT_EOK on successful - */ -static int set_timeval(struct timeval *tv) -{ -#ifdef RT_USING_RTC - static rt_device_t device = RT_NULL; - rt_err_t rst = -RT_ERROR; - - if (tv == RT_NULL) - return -RT_EINVAL; - - /* optimization: find rtc device only first */ - if (device == RT_NULL) - { - device = rt_device_find("rtc"); - } - - /* read timestamp from RTC device */ - if (device != RT_NULL) - { - if (rt_device_open(device, 0) == RT_EOK) - { - rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec); - rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIMEVAL, tv); - rt_device_close(device); - } - } - else - { - LOG_W(_WARNING_NO_RTC); - return -RT_ENOSYS; - } - - return rst; - -#else - LOG_W(_WARNING_NO_RTC); - return -RT_ENOSYS; -#endif /* RT_USING_RTC */ -} - -struct tm *gmtime_r(const time_t *timep, struct tm *r) -{ - time_t i; - time_t work = *timep % (SPD); - r->tm_sec = work % 60; - work /= 60; - r->tm_min = work % 60; - r->tm_hour = work / 60; - work = *timep / (SPD); - r->tm_wday = (4 + work) % 7; - for (i = 1970;; ++i) - { - time_t k = __isleap(i) ? 366 : 365; - if (work >= k) - work -= k; - else - break; - } - r->tm_year = i - 1900; - r->tm_yday = work; - - r->tm_mday = 1; - if (__isleap(i) && (work > 58)) - { - if (work == 59) - r->tm_mday = 2; /* 29.2. */ - work -= 1; - } - - for (i = 11; i && (__spm[i] > work); --i) - ; - r->tm_mon = i; - r->tm_mday += work - __spm[i]; - - r->tm_isdst = tz_is_dst(); - return r; -} -RTM_EXPORT(gmtime_r); - -struct tm* gmtime(const time_t* t) -{ - static struct tm tmp; - return gmtime_r(t, &tmp); -} -RTM_EXPORT(gmtime); - -struct tm* localtime_r(const time_t* t, struct tm* r) -{ - time_t local_tz; - - local_tz = *t + (time_t)tz_get() * 3600; - return gmtime_r(&local_tz, r); -} -RTM_EXPORT(localtime_r); - -struct tm* localtime(const time_t* t) -{ - static struct tm tmp; - return localtime_r(t, &tmp); -} -RTM_EXPORT(localtime); - -time_t mktime(struct tm * const t) -{ - time_t timestamp; - - timestamp = timegm(t); - timestamp = timestamp - 3600 * (time_t)tz_get(); - return timestamp; -} -RTM_EXPORT(mktime); - -char* asctime_r(const struct tm *t, char *buf) -{ - /* Checking input validity */ - if ((int)rt_strlen(days) <= (t->tm_wday << 2) || (int)rt_strlen(months) <= (t->tm_mon << 2)) - { - LOG_W("asctime_r: the input parameters exceeded the limit, please check it."); - *(int*) buf = *(int*) days; - *(int*) (buf + 4) = *(int*) months; - num2str(buf + 8, t->tm_mday); - if (buf[8] == '0') - buf[8] = ' '; - buf[10] = ' '; - num2str(buf + 11, t->tm_hour); - buf[13] = ':'; - num2str(buf + 14, t->tm_min); - buf[16] = ':'; - num2str(buf + 17, t->tm_sec); - buf[19] = ' '; - num2str(buf + 20, 2000 / 100); - num2str(buf + 22, 2000 % 100); - buf[24] = '\n'; - buf[25] = '\0'; - return buf; - } - - /* "Wed Jun 30 21:49:08 1993\n" */ - *(int*) buf = *(int*) (days + (t->tm_wday << 2)); - *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2)); - num2str(buf + 8, t->tm_mday); - if (buf[8] == '0') - buf[8] = ' '; - buf[10] = ' '; - num2str(buf + 11, t->tm_hour); - buf[13] = ':'; - num2str(buf + 14, t->tm_min); - buf[16] = ':'; - num2str(buf + 17, t->tm_sec); - buf[19] = ' '; - num2str(buf + 20, (t->tm_year + 1900) / 100); - num2str(buf + 22, (t->tm_year + 1900) % 100); - buf[24] = '\n'; - buf[25] = '\0'; - return buf; -} -RTM_EXPORT(asctime_r); - -char* asctime(const struct tm *timeptr) -{ - static char buf[26]; - return asctime_r(timeptr, buf); -} -RTM_EXPORT(asctime); - -char *ctime_r(const time_t * tim_p, char * result) -{ - struct tm tm; - return asctime_r(localtime_r(tim_p, &tm), result); -} -RTM_EXPORT(ctime_r); - -char* ctime(const time_t *tim_p) -{ - return asctime(localtime(tim_p)); -} -RTM_EXPORT(ctime); - -double difftime(time_t time1, time_t time2) -{ - return (double)(time1 - time2); -} -RTM_EXPORT(difftime); - -RTM_EXPORT(strftime); /* inherent in the toolchain */ - -/** - * Returns the current time. - * - * @param time_t * t the timestamp pointer, if not used, keep NULL. - * - * @return The value ((time_t)-1) is returned if the calendar time is not available. - * If timer is not a NULL pointer, the return value is also stored in timer. - * - */ -RT_WEAK time_t time(time_t *t) -{ - struct timeval now; - - if(get_timeval(&now) == RT_EOK) - { - if (t) - { - *t = now.tv_sec; - } - return now.tv_sec; - } - else - { - rt_set_errno(EFAULT); - return ((time_t)-1); - } -} -RTM_EXPORT(time); - -RT_WEAK clock_t clock(void) -{ - return rt_tick_get(); -} -RTM_EXPORT(clock); - -int stime(const time_t *t) -{ - struct timeval tv; - - if (!t) - { - rt_set_errno(EFAULT); - return -1; - } - - tv.tv_sec = *t; - if (set_timeval(&tv) == RT_EOK) - { - return 0; - } - else - { - rt_set_errno(EFAULT); - return -1; - } -} -RTM_EXPORT(stime); - -time_t timegm(struct tm * const t) -{ - time_t day; - time_t i; - time_t years = (time_t)t->tm_year - 70; - - if (t->tm_sec > 60) /* seconds after the minute - [0, 60] including leap second */ - { - t->tm_min += t->tm_sec / 60; - t->tm_sec %= 60; - } - if (t->tm_min >= 60) /* minutes after the hour - [0, 59] */ - { - t->tm_hour += t->tm_min / 60; - t->tm_min %= 60; - } - if (t->tm_hour >= 24) /* hours since midnight - [0, 23] */ - { - t->tm_mday += t->tm_hour / 24; - t->tm_hour %= 24; - } - if (t->tm_mon >= 12) /* months since January - [0, 11] */ - { - t->tm_year += t->tm_mon / 12; - t->tm_mon %= 12; - } - while (t->tm_mday > __spm[1 + t->tm_mon]) - { - if (t->tm_mon == 1 && __isleap(t->tm_year + 1900)) - { - --t->tm_mday; - } - t->tm_mday -= __spm[t->tm_mon]; - ++t->tm_mon; - if (t->tm_mon > 11) - { - t->tm_mon = 0; - ++t->tm_year; - } - } - - if (t->tm_year < 70) - return (time_t) - 1; - - /* Days since 1970 is 365 * number of years + number of leap years since 1970 */ - day = years * 365 + (years + 1) / 4; - - /* After 2100 we have to substract 3 leap years for every 400 years - This is not intuitive. Most mktime implementations do not support - dates after 2059, anyway, so we might leave this out for it's - bloat. */ - if (years >= 131) - { - years -= 131; - years /= 100; - day -= (years >> 2) * 3 + 1; - if ((years &= 3) == 3) - years--; - day -= years; - } - - day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 + - (__isleap(t->tm_year + 1900) & (t->tm_mon > 1)); - - /* day is now the number of days since 'Jan 1 1970' */ - i = 7; - t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */ - - i = 24; - day *= i; - i = 60; - return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec; -} -RTM_EXPORT(timegm); - -int gettimeofday(struct timeval *tv, struct timezone *tz) -{ - /* The use of the timezone structure is obsolete; - * the tz argument should normally be specified as NULL. - * The tz_dsttime field has never been used under Linux. - * Thus, the following is purely of historic interest. - */ - if(tz != RT_NULL) - { - tz->tz_dsttime = DST_NONE; - tz->tz_minuteswest = -(tz_get() * 60); - } - - if (tv != RT_NULL && get_timeval(tv) == RT_EOK) - { - return 0; - } - else - { - rt_set_errno(EFAULT); - return -1; - } -} -RTM_EXPORT(gettimeofday); - -int settimeofday(const struct timeval *tv, const struct timezone *tz) -{ - /* The use of the timezone structure is obsolete; - * the tz argument should normally be specified as NULL. - * The tz_dsttime field has never been used under Linux. - * Thus, the following is purely of historic interest. - */ - if (tv != RT_NULL - && tv->tv_usec >= 0 - && set_timeval((struct timeval *)tv) == RT_EOK) - { - return 0; - } - else - { - rt_set_errno(EINVAL); - return -1; - } -} -RTM_EXPORT(settimeofday); - -#ifdef RT_USING_POSIX_DELAY -int nanosleep(const struct timespec *rqtp, struct timespec *rmtp) -{ - sleep(rqtp->tv_sec); - ndelay(rqtp->tv_nsec); - return 0; -} -RTM_EXPORT(nanosleep); -#endif /* RT_USING_POSIX_DELAY */ - -#ifdef RT_USING_POSIX_CLOCK -#ifdef RT_USING_RTC -static volatile struct timeval _timevalue; -static int _rt_clock_time_system_init(void) -{ - rt_base_t level; - time_t time = 0; - rt_tick_t tick; - rt_device_t device; - - device = rt_device_find("rtc"); - if (device != RT_NULL) - { - /* get realtime seconds */ - if(rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time) == RT_EOK) - { - level = rt_hw_interrupt_disable(); - tick = rt_tick_get(); /* get tick */ - _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK; - _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1; - rt_hw_interrupt_enable(level); - return 0; - } - } - - level = rt_hw_interrupt_disable(); - _timevalue.tv_usec = 0; - _timevalue.tv_sec = 0; - rt_hw_interrupt_enable(level); - - return -1; -} -INIT_COMPONENT_EXPORT(_rt_clock_time_system_init); -#endif /* RT_USING_RTC */ - -int clock_getres(clockid_t clockid, struct timespec *res) -{ -#ifndef RT_USING_RTC - LOG_W(_WARNING_NO_RTC); - return -1; -#else - int ret = 0; - - if (res == RT_NULL) - { - rt_set_errno(EINVAL); - return -1; - } - - switch (clockid) - { - case CLOCK_REALTIME: - res->tv_sec = 0; - res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND; - break; - -#ifdef RT_USING_CPUTIME - case CLOCK_CPUTIME_ID: - res->tv_sec = 0; - res->tv_nsec = clock_cpu_getres(); - break; -#endif - - default: - ret = -1; - rt_set_errno(EINVAL); - break; - } - - return ret; -#endif /* RT_USING_RTC */ -} -RTM_EXPORT(clock_getres); - -int clock_gettime(clockid_t clockid, struct timespec *tp) -{ -#ifndef RT_USING_RTC - LOG_W(_WARNING_NO_RTC); - return -1; -#else - int ret = 0; - - if (tp == RT_NULL) - { - rt_set_errno(EINVAL); - return -1; - } - - switch (clockid) - { - case CLOCK_REALTIME: - { - int tick; - rt_base_t level; - - level = rt_hw_interrupt_disable(); - tick = rt_tick_get(); /* get tick */ - tp->tv_sec = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND; - tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000; - rt_hw_interrupt_enable(level); - } - break; - -#ifdef RT_USING_CPUTIME - case CLOCK_CPUTIME_ID: - { - float unit = 0; - long long cpu_tick; - - unit = clock_cpu_getres(); - cpu_tick = clock_cpu_gettime(); - - tp->tv_sec = ((long long)(cpu_tick * unit)) / NANOSECOND_PER_SECOND; - tp->tv_nsec = ((long long)(cpu_tick * unit)) % NANOSECOND_PER_SECOND; - } - break; -#endif - default: - rt_set_errno(EINVAL); - ret = -1; - } - - return ret; -#endif /* RT_USING_RTC */ -} -RTM_EXPORT(clock_gettime); - -int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp, struct timespec *rmtp) -{ - if ((clockid != CLOCK_REALTIME) || (rqtp == RT_NULL)) - { - rt_set_errno(EINVAL); - return -1; - } - - return nanosleep(rqtp, rmtp); -} - -int clock_settime(clockid_t clockid, const struct timespec *tp) -{ -#ifndef RT_USING_RTC - LOG_W(_WARNING_NO_RTC); - return -1; -#else - rt_base_t level; - int second; - rt_tick_t tick; - rt_device_t device; - - if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL)) - { - rt_set_errno(EINVAL); - return -1; - } - - /* get second */ - second = tp->tv_sec; - - level = rt_hw_interrupt_disable(); - tick = rt_tick_get(); /* get tick */ - /* update timevalue */ - _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK; - _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1; - rt_hw_interrupt_enable(level); - - /* update for RTC device */ - device = rt_device_find("rtc"); - if (device != RT_NULL) - { - /* set realtime seconds */ - if(rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second) == RT_EOK) - { - return 0; - } - } - - return -1; -#endif /* RT_USING_RTC */ -} -RTM_EXPORT(clock_settime); - -int rt_timespec_to_tick(const struct timespec *time) -{ - int tick; - int nsecond, second; - struct timespec tp = {0}; - - RT_ASSERT(time != RT_NULL); - - tick = RT_WAITING_FOREVER; - if (time != NULL) - { - /* get current tp */ - clock_gettime(CLOCK_REALTIME, &tp); - - if ((time->tv_nsec - tp.tv_nsec) < 0) - { - nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec); - second = time->tv_sec - tp.tv_sec - 1; - } - else - { - nsecond = time->tv_nsec - tp.tv_nsec; - second = time->tv_sec - tp.tv_sec; - } - - tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND; - if (tick < 0) tick = 0; - } - - return tick; -} -RTM_EXPORT(rt_timespec_to_tick); - -#endif /* RT_USING_POSIX_CLOCK */ - -#ifdef RT_USING_POSIX_TIMER - -#define ACTIVE 1 -#define NOT_ACTIVE 0 - -struct timer_obj -{ - struct rt_timer timer; - void (*sigev_notify_function)(union sigval val); - union sigval val; - struct timespec interval; /* Reload value */ - rt_uint32_t reload; /* Reload value in ms */ - rt_uint32_t status; -}; - -static void rtthread_timer_wrapper(void *timerobj) -{ - struct timer_obj *timer; - - timer = (struct timer_obj *)timerobj; - - if (timer->reload == 0U) - { - timer->status = NOT_ACTIVE; - } - - if(timer->sigev_notify_function != RT_NULL) - { - (timer->sigev_notify_function)(timer->val); - } -} - -/** - * @brief Create a per-process timer. - * - * This API does not accept SIGEV_THREAD as valid signal event notification - * type. - * - * See IEEE 1003.1 - */ -int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid) -{ - static int num = 0; - struct timer_obj *timer; - char timername[RT_NAME_MAX] = {0}; - - if (clockid != CLOCK_MONOTONIC || evp == NULL || - (evp->sigev_notify != SIGEV_NONE && - evp->sigev_notify != SIGEV_SIGNAL)) - { - rt_set_errno(EINVAL); - return -RT_ERROR; - } - - timer = rt_malloc(sizeof(struct timer_obj)); - if(timer == RT_NULL) - { - rt_set_errno(ENOMEM); - return -RT_ENOMEM; - } - - RT_ASSERT(evp->sigev_notify_function != RT_NULL); - rt_snprintf(timername, RT_NAME_MAX, "psx_tm%02d", num++); - num %= 100; - timer->sigev_notify_function = evp->sigev_notify_function; - timer->val = evp->sigev_value; - timer->interval.tv_sec = 0; - timer->interval.tv_nsec = 0; - timer->reload = 0U; - timer->status = NOT_ACTIVE; - - if (evp->sigev_notify == SIGEV_NONE) - { - rt_timer_init(&timer->timer, timername, RT_NULL, RT_NULL, 0, RT_TIMER_FLAG_ONE_SHOT | RT_TIMER_FLAG_SOFT_TIMER); - } - else - { - rt_timer_init(&timer->timer, timername, rtthread_timer_wrapper, timer, 0, RT_TIMER_FLAG_ONE_SHOT | RT_TIMER_FLAG_SOFT_TIMER); - } - - *timerid = (timer_t)timer; - - return RT_EOK; -} -RTM_EXPORT(timer_create); - -/** - * @brief Delete a per-process timer. - * - * See IEEE 1003.1 - */ -int timer_delete(timer_t timerid) -{ - struct timer_obj *timer = (struct timer_obj *)timerid; - - if (timer == RT_NULL) - { - rt_set_errno(EINVAL); - return -RT_ERROR; - } - - if (timer->status == ACTIVE) - { - timer->status = NOT_ACTIVE; - rt_timer_stop(&timer->timer); - } - - rt_free(timer); - - return RT_EOK; -} -RTM_EXPORT(timer_delete); - -/** - * - * Return the overrun count for the last timer expiration. - * It is subefficient to create a new structure to get overrun count. - **/ -int timer_getoverrun(timer_t timerid) -{ - rt_set_errno(ENOSYS); - return -RT_ERROR; -} - -/** - * @brief Get amount of time left for expiration on a per-process timer. - * - * See IEEE 1003.1 - */ -int timer_gettime(timer_t timerid, struct itimerspec *its) -{ - struct timer_obj *timer = (struct timer_obj *)timerid; - rt_tick_t remaining; - rt_uint32_t seconds, nanoseconds; - - if (timer == NULL) - { - rt_set_errno(EINVAL); - return -RT_ERROR; - } - - if (its == NULL) - { - rt_set_errno(EFAULT); - return -RT_ERROR; - } - - if (timer->status == ACTIVE) - { - rt_tick_t remain_tick; - - rt_timer_control(&timer->timer, RT_TIMER_CTRL_GET_REMAIN_TIME, &remain_tick); - - /* 'remain_tick' is minimum-unit in the RT-Thread' timer, - * so the seconds, nanoseconds will be calculated by 'remain_tick'. - */ - remaining = remain_tick - rt_tick_get(); - - /* calculate 'second' */ - seconds = remaining / RT_TICK_PER_SECOND; - - /* calculate 'nanosecond'; To avoid lost of accuracy, because "RT_TICK_PER_SECOND" maybe 100, 1000, 1024 and so on. - * - * remain_tick millisecond remain_tick * MILLISECOND_PER_SECOND - * ------------------------- = -------------------------- ---> millisecond = ------------------------------------------- - * RT_TICK_PER_SECOND MILLISECOND_PER_SECOND RT_TICK_PER_SECOND - * - * remain_tick * MILLISECOND_PER_SECOND remain_tick * MILLISECOND_PER_SECOND * MICROSECOND_PER_SECOND - * millisecond = ---------------------------------------- ---> nanosecond = ------------------------------------------------------------------- - * RT_TICK_PER_SECOND RT_TICK_PER_SECOND - * - */ - nanoseconds = (((remaining % RT_TICK_PER_SECOND) * MILLISECOND_PER_SECOND) * MICROSECOND_PER_SECOND) / RT_TICK_PER_SECOND ; - - its->it_value.tv_sec = (rt_int32_t)seconds; - its->it_value.tv_nsec = (rt_int32_t)nanoseconds; - } - else - { - /* Timer is disarmed */ - its->it_value.tv_sec = 0; - its->it_value.tv_nsec = 0; - } - - /* The interval last set by timer_settime() */ - its->it_interval = timer->interval; - return RT_EOK; -} -RTM_EXPORT(timer_gettime); - -/** - * @brief Sets expiration time of per-process timer. - * - * See IEEE 1003.1 - */ -int timer_settime(timer_t timerid, int flags, const struct itimerspec *value, - struct itimerspec *ovalue) -{ - struct timer_obj *timer = (struct timer_obj *)timerid; - - if (timer == NULL || - value->it_interval.tv_nsec < 0 || - value->it_interval.tv_nsec >= NANOSECOND_PER_SECOND || - value->it_value.tv_nsec < 0 || - value->it_value.tv_nsec >= NANOSECOND_PER_SECOND) - { - rt_set_errno(EINVAL); - return -RT_ERROR; - } - - if (value == NULL || ovalue == NULL) - { - rt_set_errno(EFAULT); - return -RT_ERROR; - } - - /* Save time to expire and old reload value. */ - if (ovalue != NULL) - { - timer_gettime(timerid, ovalue); - } - - /* Stop the timer if the value is 0 */ - if ((value->it_value.tv_sec == 0) && (value->it_value.tv_nsec == 0)) - { - if (timer->status == ACTIVE) - { - rt_timer_stop(&timer->timer); - } - - timer->status = NOT_ACTIVE; - return RT_EOK; - } - - /* calculate timer period(tick); To avoid lost of accuracy, because "RT_TICK_PER_SECOND" maybe 100, 1000, 1024 and so on. - * - * tick nanosecond nanosecond * RT_TICK_PER_SECOND - * ------------------------- = -------------------------- ---> tick = ------------------------------------- - * RT_TICK_PER_SECOND NANOSECOND_PER_SECOND NANOSECOND_PER_SECOND - * - */ - timer->reload = (value->it_interval.tv_sec * RT_TICK_PER_SECOND) + (value->it_interval.tv_nsec * RT_TICK_PER_SECOND) / NANOSECOND_PER_SECOND; - timer->interval.tv_sec = value->it_interval.tv_sec; - timer->interval.tv_nsec = value->it_interval.tv_nsec; - - if (timer->status == ACTIVE) - { - rt_timer_stop(&timer->timer); - } - - timer->status = ACTIVE; - rt_timer_control(&timer->timer, RT_TIMER_CTRL_SET_TIME, (void *)timer->reload); - rt_timer_control(&timer->timer, RT_TIMER_CTRL_SET_PERIODIC, RT_NULL); - rt_timer_start(&timer->timer); - - return RT_EOK; -} -RTM_EXPORT(timer_settime); -#endif /* RT_USING_POSIX_TIMER */ - - -/* timezone */ -#ifndef RT_LIBC_DEFAULT_TIMEZONE -#define RT_LIBC_DEFAULT_TIMEZONE 8 -#endif - -static volatile int8_t _current_timezone = RT_LIBC_DEFAULT_TIMEZONE; - -void tz_set(int8_t tz) -{ - rt_base_t level; - level = rt_hw_interrupt_disable(); - _current_timezone = tz; - rt_hw_interrupt_enable(level); -} - -int8_t tz_get(void) -{ - return _current_timezone; -} - -int8_t tz_is_dst(void) -{ - return 0; -} |