OrgApache/incubator-nuttx
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incubator-nuttx
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sim: fix nuttx consumes much CPU time 

Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit is contained in:
ligd 2023-02-10 22:54:55 +08:00 committed by Masayuki Ishikawa
parent 758668d11a
commit 87a92d995f
1 changed files with 26 additions and 12 deletions
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38
arch/sim/src/sim/sim_oneshot.c
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@ -122,6 +122,20 @@ static inline void sim_timer_current(struct timespec *ts)
ts->tv_nsec = nsec;
}
/****************************************************************************
* Name: sim_reset_alarm
*
* Description:
* Reset the alarm to MAX
*
****************************************************************************/
static inline void sim_reset_alarm(struct timespec *alarm)
{
alarm->tv_sec = UINT_MAX;
alarm->tv_nsec = NSEC_PER_SEC - 1;
}
/****************************************************************************
* Name: sim_update_hosttimer
*
@ -217,16 +231,18 @@ static void sim_process_tick(sq_entry_t *entry)
DEBUGASSERT(priv != NULL);
struct timespec current;
sim_timer_current(&current);
if (clock_timespec_compare(&priv->alarm, &current) > 0)
{
return; /* Alarm doesn't expire yet */
}
sim_reset_alarm(&priv->alarm);
if (priv->callback)
{
struct timespec current;
sim_timer_current(&current);
if (clock_timespec_compare(&priv->alarm, &current) > 0)
{
return; /* Alarm doesn't expire yet */
}
/* Sample and nullify BEFORE executing callback (in case the callback
* restarts the oneshot).
*/
@ -355,9 +371,7 @@ static int sim_cancel(struct oneshot_lowerhalf_s *lower,
sim_timer_current(&current);
clock_timespec_subtract(&priv->alarm, &current, ts);
priv->alarm.tv_sec = UINT_MAX;
priv->alarm.tv_nsec = NSEC_PER_SEC - 1;
sim_reset_alarm(&priv->alarm);
sim_update_hosttimer();
priv->callback = NULL;
@ -505,7 +519,6 @@ void up_timer_initialize(void)
void sim_timer_update(void)
{
#ifdef CONFIG_SIM_WALLTIME_SLEEP
static uint64_t until;
/* Wait a bit so that the timing is close to the correct rate. */
@ -513,6 +526,7 @@ void sim_timer_update(void)
until += NSEC_PER_TICK;
host_sleepuntil(until);
#ifdef CONFIG_SIM_WALLTIME_SLEEP
sim_timer_update_internal();
#endif
}