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pthread/cond: enhance pthread_cond_destroy

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follow: https://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_cond_destroy.html

Change-Id: If645120cbac72975671768159d03f211c4940cca
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong 2021-01-18 20:09:25 +08:00 committed by Alan Carvalho de Assis
parent a1378e7f21
commit 28167c14a3
1 changed files with 22 additions and 3 deletions
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25
libs/libc/pthread/pthread_conddestroy.c
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@ -57,7 +57,10 @@
* None
*
* Returned Value:
* None
* OK (0) on success; a (non-negated) errno value on failure. The errno
* variable is not set. EBUSY is returned when the implementation has
* detected an attempt to destroy the object referenced by cond while
* it is referenced. EINVAL is returned when cond is invalid.
*
* Assumptions:
*
@ -66,6 +69,7 @@
int pthread_cond_destroy(FAR pthread_cond_t *cond)
{
int ret = OK;
int sval = 0;
sinfo("cond=0x%p\n", cond);
@ -76,9 +80,24 @@ int pthread_cond_destroy(FAR pthread_cond_t *cond)
/* Destroy the semaphore contained in the structure */
else if (sem_destroy((FAR sem_t *)&cond->sem) != OK)
else
{
ret = EINVAL;
ret = sem_getvalue(&cond->sem, &sval);
if (ret < 0)
{
ret = -ret;
}
else
{
if (sval < 0)
{
ret = EBUSY;
}
else if (sem_destroy(&cond->sem) != OK)
{
ret = EINVAL;
}
}
}
sinfo("Returning %d\n", ret);