MUTEX_FLAG_RELEASED
if ((lock->flags & MUTEX_FLAG_RELEASED) != 0) {
lock->flags &= ~MUTEX_FLAG_RELEASED;
lock->flags |= MUTEX_FLAG_RELEASED;
if ((lock->flags & MUTEX_FLAG_RELEASED) != 0) {
lock->flags &= ~MUTEX_FLAG_RELEASED;
if ((lock->flags & MUTEX_FLAG_RELEASED) != 0) {
lock->flags &= ~MUTEX_FLAG_RELEASED;
lock->flags |= MUTEX_FLAG_RELEASED;