Method dtor

thread/thread-pool.cpp:153–169

        return 0;
    }
    int ThreadPoolBase::dtor(ThreadPoolBase* tpb, TPControl* pCtrl)
    {
        {
            SCOPED_LOCK(pCtrl->m_mtx);
            if (pCtrl->start) {     // it's running
                assert(pCtrl->start != &stub);
                pCtrl->joinable = true;
                pCtrl->m_mtx.unlock();
                tpb->join(pCtrl);
                pCtrl->m_mtx.lock();
            }
            pCtrl->start = &stub;
            pCtrl->cvar.notify_all();
        }
        thread_yield();
        return 0;
    }
}