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[fix][kernel][timer]fixed timer ASSERT exception due to multithreaded scheduling 

Signed-off-by: WillianChan <chentingwei@rt-thread.com>
This commit is contained in:
WillianChan 2021-08-31 10:39:44 +08:00
parent 553b57e3a9
commit 75b65ebcf2
1 changed files with 12 additions and 4 deletions
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16
src/timer.c
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@ -367,6 +367,7 @@ rt_err_t rt_timer_start(rt_timer_t timer)
unsigned int row_lvl;
rt_list_t *timer_list;
register rt_base_t level;
register rt_bool_t need_schedule;
rt_list_t *row_head[RT_TIMER_SKIP_LIST_LEVEL];
unsigned int tst_nr;
static unsigned int random_nr;
@ -375,6 +376,8 @@ rt_err_t rt_timer_start(rt_timer_t timer)
RT_ASSERT(timer != RT_NULL);
RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);
need_schedule = RT_FALSE;
/* stop timer firstly */
level = rt_hw_interrupt_disable();
/* remove timer from list */
@ -457,9 +460,6 @@ rt_err_t rt_timer_start(rt_timer_t timer)
timer->parent.flag |= RT_TIMER_FLAG_ACTIVATED;
/* enable interrupt */
rt_hw_interrupt_enable(level);
#ifdef RT_USING_TIMER_SOFT
if (timer->parent.flag & RT_TIMER_FLAG_SOFT_TIMER)
{
@ -469,11 +469,19 @@ rt_err_t rt_timer_start(rt_timer_t timer)
{
/* resume timer thread to check soft timer */
rt_thread_resume(&_timer_thread);
rt_schedule();
need_schedule = RT_TRUE;
}
}
#endif /* RT_USING_TIMER_SOFT */
/* enable interrupt */
rt_hw_interrupt_enable(level);
if (need_schedule)
{
rt_schedule();
}
return RT_EOK;
}
RTM_EXPORT(rt_timer_start);