340 lines
8.6 KiB
C
Executable File
340 lines
8.6 KiB
C
Executable File
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-02-13 zhkag first version
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* 2023-04-03 xqyjlj fix cputimer in multithreading
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*/
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#include <rtdevice.h>
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#include <rthw.h>
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#include <rtthread.h>
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static rt_list_t _cputimer_list = RT_LIST_OBJECT_INIT(_cputimer_list);
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static struct rt_cputimer *_cputimer_nowtimer = RT_NULL;
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static void _cputime_sleep_timeout(void *parameter)
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{
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struct rt_semaphore *sem;
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sem = (struct rt_semaphore *)parameter;
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rt_sem_release(sem);
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}
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static void _cputime_timeout_callback(void *parameter)
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{
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struct rt_cputimer *timer;
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timer = (struct rt_cputimer *)parameter;
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rt_base_t level;
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level = rt_hw_interrupt_disable();
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_cputimer_nowtimer = RT_NULL;
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rt_list_remove(&(timer->row));
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rt_hw_interrupt_enable(level);
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timer->timeout_func(timer->parameter);
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if (&_cputimer_list != _cputimer_list.prev)
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{
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struct rt_cputimer *t;
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t = rt_list_entry(_cputimer_list.next, struct rt_cputimer, row);
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clock_cpu_settimeout(t->timeout_tick, _cputime_timeout_callback, t);
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}
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else
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{
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clock_cpu_settimeout(RT_NULL, RT_NULL, RT_NULL);
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}
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}
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static void _set_next_timeout()
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{
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struct rt_cputimer *t;
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if (&_cputimer_list != _cputimer_list.prev)
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{
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t = rt_list_entry((&_cputimer_list)->next, struct rt_cputimer, row);
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if (_cputimer_nowtimer != RT_NULL)
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{
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if (t != _cputimer_nowtimer && t->timeout_tick < _cputimer_nowtimer->timeout_tick)
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{
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_cputimer_nowtimer = t;
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clock_cpu_settimeout(t->timeout_tick, _cputime_timeout_callback, t);
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}
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}
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else
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{
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_cputimer_nowtimer = t;
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clock_cpu_settimeout(t->timeout_tick, _cputime_timeout_callback, t);
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}
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}
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else
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{
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_cputimer_nowtimer = RT_NULL;
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clock_cpu_settimeout(RT_NULL, RT_NULL, RT_NULL);
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}
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}
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void rt_cputimer_init(rt_cputimer_t timer,
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const char *name,
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void (*timeout)(void *parameter),
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void *parameter,
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rt_uint64_t tick,
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rt_uint8_t flag)
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{
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/* parameter check */
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RT_ASSERT(timer != RT_NULL);
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RT_ASSERT(timeout != RT_NULL);
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RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
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/* set flag */
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timer->parent.flag = flag;
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/* set deactivated */
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timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
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timer->timeout_func = timeout;
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timer->parameter = parameter;
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timer->timeout_tick = tick + clock_cpu_gettime();
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timer->init_tick = tick;
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rt_list_init(&(timer->row));
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rt_sem_init(&(timer->sem), "cputime", 0, RT_IPC_FLAG_PRIO);
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}
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rt_err_t rt_cputimer_delete(rt_cputimer_t timer)
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{
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rt_base_t level;
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/* parameter check */
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RT_ASSERT(timer != RT_NULL);
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RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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rt_list_remove(&timer->row);
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/* stop timer */
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timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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_set_next_timeout();
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return RT_EOK;
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}
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rt_err_t rt_cputimer_start(rt_cputimer_t timer)
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{
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rt_list_t *timer_list;
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rt_base_t level;
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/* parameter check */
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RT_ASSERT(timer != RT_NULL);
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RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
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/* stop timer firstly */
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level = rt_hw_interrupt_disable();
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/* remove timer from list */
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rt_list_remove(&timer->row);
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/* change status of timer */
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timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
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timer_list = &_cputimer_list;
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for (; timer_list != _cputimer_list.prev;
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timer_list = timer_list->next)
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{
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struct rt_cputimer *t;
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rt_list_t *p = timer_list->next;
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t = rt_list_entry(p, struct rt_cputimer, row);
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if ((t->timeout_tick - timer->timeout_tick) == 0)
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{
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continue;
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}
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else if ((t->timeout_tick - timer->timeout_tick) < 0x7fffffffffffffff)
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{
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break;
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}
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}
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rt_list_insert_after(timer_list, &(timer->row));
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timer->parent.flag |= RT_TIMER_FLAG_ACTIVATED;
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_set_next_timeout();
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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return RT_EOK;
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}
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rt_err_t rt_cputimer_stop(rt_cputimer_t timer)
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{
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rt_base_t level;
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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/* timer check */
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RT_ASSERT(timer != RT_NULL);
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RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
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if (!(timer->parent.flag & RT_TIMER_FLAG_ACTIVATED))
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{
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rt_hw_interrupt_enable(level);
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return -RT_ERROR;
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}
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rt_list_remove(&timer->row);
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/* change status */
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timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
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_set_next_timeout();
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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return RT_EOK;
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}
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rt_err_t rt_cputimer_control(rt_cputimer_t timer, int cmd, void *arg)
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{
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rt_base_t level;
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/* parameter check */
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RT_ASSERT(timer != RT_NULL);
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RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
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level = rt_hw_interrupt_disable();
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switch (cmd)
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{
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case RT_TIMER_CTRL_GET_TIME:
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*(rt_uint64_t *)arg = timer->init_tick;
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break;
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case RT_TIMER_CTRL_SET_TIME:
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RT_ASSERT((*(rt_uint64_t *)arg) < 0x7fffffffffffffff);
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timer->init_tick = *(rt_uint64_t *)arg;
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timer->timeout_tick = *(rt_uint64_t *)arg + clock_cpu_gettime();
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break;
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case RT_TIMER_CTRL_SET_ONESHOT:
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timer->parent.flag &= ~RT_TIMER_FLAG_PERIODIC;
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break;
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case RT_TIMER_CTRL_SET_PERIODIC:
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timer->parent.flag |= RT_TIMER_FLAG_PERIODIC;
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break;
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case RT_TIMER_CTRL_GET_STATE:
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if (timer->parent.flag & RT_TIMER_FLAG_ACTIVATED)
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{
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/*timer is start and run*/
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*(rt_uint32_t *)arg = RT_TIMER_FLAG_ACTIVATED;
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}
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else
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{
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/*timer is stop*/
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*(rt_uint32_t *)arg = RT_TIMER_FLAG_DEACTIVATED;
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}
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break;
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case RT_TIMER_CTRL_GET_REMAIN_TIME:
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*(rt_uint64_t *)arg = timer->timeout_tick;
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break;
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case RT_TIMER_CTRL_GET_FUNC:
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arg = (void *)timer->timeout_func;
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break;
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case RT_TIMER_CTRL_SET_FUNC:
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timer->timeout_func = (void (*)(void *))arg;
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break;
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case RT_TIMER_CTRL_GET_PARM:
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*(void **)arg = timer->parameter;
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break;
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case RT_TIMER_CTRL_SET_PARM:
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timer->parameter = arg;
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break;
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default:
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break;
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}
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rt_hw_interrupt_enable(level);
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return RT_EOK;
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}
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rt_err_t rt_cputimer_detach(rt_cputimer_t timer)
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{
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rt_base_t level;
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/* parameter check */
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RT_ASSERT(timer != RT_NULL);
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RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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rt_list_remove(&timer->row);
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/* stop timer */
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timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
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_set_next_timeout();
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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rt_sem_detach(&(timer->sem));
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return RT_EOK;
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}
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rt_err_t rt_cputime_sleep(rt_uint64_t tick)
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{
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rt_base_t level;
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struct rt_cputimer cputimer;
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if (!clock_cpu_issettimeout())
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{
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rt_int32_t ms = clock_cpu_millisecond(tick);
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return rt_thread_delay(rt_tick_from_millisecond(ms));
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}
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if (tick == 0)
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{
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return -RT_EINVAL;
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}
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rt_cputimer_init(&cputimer, "cputime_sleep", _cputime_sleep_timeout, &(cputimer.sem), tick,
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RT_TIMER_FLAG_ONE_SHOT | RT_TIMER_FLAG_SOFT_TIMER);
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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rt_cputimer_start(&cputimer); /* reset the timeout of thread timer and start it */
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rt_hw_interrupt_enable(level);
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rt_sem_take_interruptible(&(cputimer.sem), RT_WAITING_FOREVER);
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rt_cputimer_detach(&cputimer);
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return RT_EOK;
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}
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rt_err_t rt_cputime_ndelay(rt_uint64_t ns)
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{
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uint64_t unit = clock_cpu_getres();
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return rt_cputime_sleep(ns * (1000UL * 1000) / unit);
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}
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rt_err_t rt_cputime_udelay(rt_uint64_t us)
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{
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return rt_cputime_ndelay(us * 1000);
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}
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rt_err_t rt_cputime_mdelay(rt_uint64_t ms)
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{
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return rt_cputime_ndelay(ms * 1000000);
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}
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