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iob: add elapse calc for iob_allocwait

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Correct the calculation of timeout time

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu 2023-05-18 11:27:47 +08:00 committed by Xiang Xiao
parent fb74c46e4d
commit 1d6b9d3e98
1 changed files with 22 additions and 2 deletions
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24
mm/iob/iob_alloc.c
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@ -38,6 +38,23 @@
* Private Functions
****************************************************************************/
static clock_t iob_allocwait_gettimeout(clock_t start, unsigned int timeout)
{
sclock_t tick;
tick = clock_systime_ticks() - start;
if (tick >= MSEC2TICK(timeout))
{
tick = 0;
}
else
{
tick = MSEC2TICK(timeout) - tick;
}
return tick;
}
/****************************************************************************
* Name: iob_alloc_committed
*
@ -93,6 +110,7 @@ static FAR struct iob_s *iob_allocwait(bool throttled, unsigned int timeout)
FAR struct iob_s *iob;
irqstate_t flags;
FAR sem_t *sem;
clock_t start;
int ret = OK;
#if CONFIG_IOB_THROTTLE > 0
@ -115,7 +133,8 @@ static FAR struct iob_s *iob_allocwait(bool throttled, unsigned int timeout)
* decremented atomically.
*/
iob = iob_tryalloc(throttled);
start = clock_systime_ticks();
iob = iob_tryalloc(throttled);
while (ret == OK && iob == NULL)
{
/* If not successful, then the semaphore count was less than or equal
@ -130,7 +149,8 @@ static FAR struct iob_s *iob_allocwait(bool throttled, unsigned int timeout)
}
else
{
ret = nxsem_tickwait_uninterruptible(sem, MSEC2TICK(timeout));
ret = nxsem_tickwait_uninterruptible(sem,
iob_allocwait_gettimeout(start, timeout));
}
if (ret >= 0)