/* A busy mutex can't be destroyed -> EBUSY */
static WINPTHREADS_ATTRIBUTE((noinline)) int
mutex_ref_destroy (pthread_mutex_t *m, pthread_mutex_t *mDestroy )
{
int r = 0;
*mDestroy = NULL;
/* also considered as busy, any concurrent access prevents destruction: $$$$ */
if (_spin_lite_trylock (&mutex_global) != 0)
return EBUSY;
if (!m || !*m)
r = EINVAL;
else
{
mutex_t *m_ = (mutex_t *)*m;
if (STATIC_INITIALIZER(*m))
*m = NULL;
else if (m_->valid != LIFE_MUTEX)
r = EINVAL;
else if (m_->busy || COND_LOCKED(m_))
r = EBUSY;
else
{
*mDestroy = *m;
*m = NULL;
}
}
_spin_lite_unlock (&mutex_global);
return r;
}
static WINPTHREADS_ATTRIBUTE((noinline)) int
barrier_ref_destroy(volatile pthread_barrier_t *barrier, pthread_barrier_t *bDestroy)
{
int r = 0;
*bDestroy = NULL;
if (_spin_lite_trylock(&barrier_global)) return EBUSY;
if (!barrier || !*barrier || ((barrier_t *)*barrier)->valid != LIFE_BARRIER) r = EINVAL;
else {
barrier_t *b_ = (barrier_t *)*barrier;
if (b_->busy) r = EBUSY;
else {
*bDestroy = *barrier;
*barrier = NULL;
}
}
_spin_lite_unlock(&barrier_global);
return r;
}
static __attribute__((noinline)) int rwl_ref_destroy(pthread_rwlock_t *rwl, pthread_rwlock_t *rDestroy )
{
int r = 0;
*rDestroy = NULL;
if (_spin_lite_trylock(&rwl_global)) return EBUSY;
if (!rwl || !*rwl) r = EINVAL;
else {
rwlock_t *r_ = (rwlock_t *)*rwl;
if (STATIC_RWL_INITIALIZER(*rwl)) *rwl = NULL;
else if (r_->valid != LIFE_RWLOCK) r = EINVAL;
else if (r_->busy) r = EBUSY;
else {
*rDestroy = *rwl;
*rwl = NULL;
}
}
_spin_lite_unlock(&rwl_global);
return r;
}
