BARRIER_FLAG_SHARED
barrier->flags = attr->process_shared ? BARRIER_FLAG_SHARED : 0;
const uint32 flags = (barrier->flags & BARRIER_FLAG_SHARED) ? B_USER_MUTEX_SHARED : 0;
const uint32 mutexFlags = (barrier->flags & BARRIER_FLAG_SHARED) ? B_USER_MUTEX_SHARED : 0;