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sched: add nxsched_get_next_expired() support 

Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit is contained in:
ligd 2024-07-19 17:41:03 +08:00 committed by Xiang Xiao
parent b010356b26
commit bc1e1e1064
2 changed files with 43 additions and 7 deletions
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16
include/nuttx/arch.h
View File

@ -2548,6 +2548,22 @@ void nxsched_alarm_expiration(FAR const struct timespec *ts);
void nxsched_alarm_tick_expiration(clock_t ticks);
#endif
/****************************************************************************
* Name: nxsched_get_next_expired
*
* Description:
* Get the time remaining until the next timer expiration.
*
* Input Parameters:
* None
*
* Returned Value:
* The time remaining until the next timer expiration.
*
****************************************************************************/
clock_t nxsched_get_next_expired(void);
/****************************************************************************
* Name: nxsched_process_cpuload_ticks
*

34
sched/sched/sched_timerexpiration.c
View File

@ -93,14 +93,12 @@ static clock_t nxsched_timer_start(clock_t ticks, clock_t interval);
static clock_t g_timer_tick;
#ifndef CONFIG_SCHED_TICKLESS_ALARM
/* This is the duration of the currently active timer or, when
* nxsched_timer_expiration() is called, the duration of interval timer
* that just expired. The value zero means that no timer was active.
*/
static unsigned int g_timer_interval;
#endif
/****************************************************************************
* Private Functions
@ -464,7 +462,7 @@ void nxsched_alarm_tick_expiration(clock_t ticks)
nexttime = nxsched_timer_process(ticks, elapsed, false);
flags = enter_critical_section();
nxsched_timer_start(ticks, nexttime);
g_timer_interval = nxsched_timer_start(ticks, nexttime);
leave_critical_section(flags);
}
@ -593,11 +591,33 @@ void nxsched_reassess_timer(void)
/* Process the timer ticks and start next timer */
nexttime = nxsched_timer_process(ticks, elapsed, true);
elapsed = nxsched_timer_start(ticks, nexttime);
g_timer_interval = nxsched_timer_start(ticks, nexttime);
}
#ifndef CONFIG_SCHED_TICKLESS_ALARM
g_timer_interval = elapsed;
#endif
/****************************************************************************
* Name: nxsched_get_next_expired
*
* Description:
* Get the time remaining until the next timer expiration.
*
* Input Parameters:
* None
*
* Returned Value:
* The time remaining until the next timer expiration.
*
****************************************************************************/
clock_t nxsched_get_next_expired(void)
{
irqstate_t flags;
sclock_t ret;
flags = enter_critical_section();
ret = g_timer_tick + g_timer_interval - clock_systime_ticks();
leave_critical_section(flags);
return ret < 0 ? 0 : ret;
}
#endif /* CONFIG_SCHED_TICKLESS */