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andy
2025-06-27 00:32:57 +08:00
commit e40bb2ba8a
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12
Project/Src/rt-thread/components/libc/time/SConscript Normal file
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# RT-Thread building script for component
from building import *
cwd = GetCurrentDir()
src = Glob('*.c') + Glob('*.cpp')
CPPPATH = [cwd]
group = DefineGroup('pthreads', src,
depend = ['RT_USING_PTHREADS'], CPPPATH = CPPPATH)
Return('group')

188
Project/Src/rt-thread/components/libc/time/clock_time.c Normal file
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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2012-12-08 Bernard fix the issue of _timevalue.tv_usec initialization,
* which found by Rob <rdent@iinet.net.au>
*/
#include <rtthread.h>
#include <pthread.h>
#include "clock_time.h"
static struct timeval _timevalue;
int clock_time_system_init()
{
time_t time;
rt_tick_t tick;
rt_device_t device;
time = 0;
device = rt_device_find("rtc");
if (device != RT_NULL)
{
/* get realtime seconds */
rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
}
/* get tick */
tick = rt_tick_get();
_timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
_timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
return 0;
}
INIT_COMPONENT_EXPORT(clock_time_system_init);
int clock_time_to_tick(const struct timespec *time)
{
int tick;
int nsecond, second;
struct timespec tp;
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(clock_time_to_tick);
int clock_getres(clockid_t clockid, struct timespec *res)
{
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;
}
RTM_EXPORT(clock_getres);
int clock_gettime(clockid_t clockid, struct timespec *tp)
{
int ret = 0;
if (tp == RT_NULL)
{
rt_set_errno(EINVAL);
return -1;
}
switch (clockid)
{
case CLOCK_REALTIME:
{
/* get tick */
int tick = rt_tick_get();
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;
}
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 = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
}
break;
#endif
default:
rt_set_errno(EINVAL);
ret = -1;
}
return ret;
}
RTM_EXPORT(clock_gettime);
int clock_settime(clockid_t clockid, const struct timespec *tp)
{
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;
/* get tick */
tick = rt_tick_get();
/* 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;
/* update for RTC device */
device = rt_device_find("rtc");
if (device != RT_NULL)
{
/* set realtime seconds */
rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
}
else
return -1;
return 0;
}
RTM_EXPORT(clock_settime);

44
Project/Src/rt-thread/components/libc/time/clock_time.h Normal file
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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-12-31 Bernard the first version
*/
#ifndef CLOCK_TIME_H__
#define CLOCK_TIME_H__
/* 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

23
Project/Src/rt-thread/components/libc/time/posix_sleep.c Normal file
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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <stdlib.h>
#include <rtthread.h>
#include <unistd.h>
unsigned int sleep(unsigned int seconds)
{
rt_tick_t delta_tick;
delta_tick = rt_tick_get();
rt_thread_delay(seconds * RT_TICK_PER_SECOND);
delta_tick = rt_tick_get() - delta_tick;
return seconds - delta_tick/RT_TICK_PER_SECOND;
}