C++ pthread_spin_destroy函数代码示例

/**
 * Delete a session and its associated queues.
 * @param   ses         session
 */
static void unvme_session_delete(unvme_session_t* ses)
{
    if (ses->id > 0) {
        pthread_spin_lock(&ses->iomem.lock);
        if (ses->iomem.size) {
            int i;
            for (i = 0; i < ses->iomem.count; i++) {
                (void) vfio_dma_free(ses->iomem.map[i]);
            }
            ses->iomem.size = ses->iomem.count = 0;
            free(ses->iomem.map);
        }
        pthread_spin_unlock(&ses->iomem.lock);
        pthread_spin_destroy(&ses->iomem.lock);
    }

    if (ses == ses->next) {
        DEBUG_FN("%x: adminq", unvme_dev.vfiodev->pci);
        unvme_adminq_delete(ses->queues);
    } else {
        DEBUG_FN("%x: q=%d-%d", unvme_dev.vfiodev->pci, ses->id,
                                ses->id + ses->qcount -1);
        while (--ses->qcount >= 0) {
            unvme_queue_t* ioq = &ses->queues[ses->qcount];
            if (ioq->ses) unvme_ioq_delete(ioq);
        }
    }
    LIST_DEL(unvme_dev.ses, ses);
    free(ses);
}

void cleanup_context(struct tur_checker_context *ct)
{
	pthread_mutex_destroy(&ct->lock);
	pthread_cond_destroy(&ct->active);
	pthread_spin_destroy(&ct->hldr_lock);
	free(ct);
}

int main()
{
    pthread_spinlock_t spinlock;
    struct sigaction act;

    /* Set up child thread to handle SIGALRM */
    act.sa_flags = 0;
    act.sa_handler = sig_handler;
    sigfillset(&act.sa_mask);
    sigaction(SIGALRM, &act, 0);

    printf("main: attemp to lock an un-initialized spin lock\n");

    printf("main: Send SIGALRM to me after 5 secs\n");
    alarm(5);

    /* Attempt to lock an uninitialized spinlock */
    rc = pthread_spin_lock(&spinlock);

    /* If we get here, call sig_handler() to check the return code of
     * pthread_spin_lock() */
    sig_handler();

    /* Unlock spinlock */
    pthread_spin_unlock(&spinlock);

    /* Destroy spinlock */
    pthread_spin_destroy(&spinlock);

    return PTS_PASS;
}

int
xwork_fini (struct xwork *xwork, int stop)
{
        int i = 0;
        int ret = 0;
        void *tret = 0;

        pthread_mutex_lock (&xwork->mutex);
        {
                xwork->stop = (xwork->stop || stop);
                pthread_cond_broadcast (&xwork->cond);
        }
        pthread_mutex_unlock (&xwork->mutex);

        for (i = 0; i < xwork->count; i++) {
                pthread_join (xwork->cthreads[i], &tret);
                tdbg ("CThread id %ld returned %p\n",
                      xwork->cthreads[i], tret);
        }

        if (debug) {
                assert (xwork->rootjob->refcnt == 1);
                dirjob_ret (xwork->rootjob, 0);
        }

        if (stats)
                pthread_spin_destroy(&stats_lock);

        return ret;
}

static int
do_test (void)
{
  pthread_spinlock_t s;

  if (pthread_spin_init (&s, PTHREAD_PROCESS_PRIVATE) != 0)
    {
      puts ("spin_init failed");
      return 1;
    }

  if (pthread_spin_lock (&s) != 0)
    {
      puts ("spin_lock failed");
      return 1;
    }

  if (pthread_spin_unlock (&s) != 0)
    {
      puts ("spin_unlock failed");
      return 1;
    }

  if (pthread_spin_destroy (&s) != 0)
    {
      puts ("spin_destroy failed");
      return 1;
    }

  return 0;
}

int main()
{

	pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE);
	lockandunlock();
	pthread_spin_destroy(&lock);

}

PADclose()
{
    while (!ev_fifo.empty())
        ev_fifo.pop();
    mutex_WasInit = false;
    pthread_spin_destroy(&mutex_KeyEvent);
    _PADclose();
}

    spinlock::~spinlock()
    {
#ifdef VOGL_BUILD_DEBUG
        VOGL_ASSERT(!m_in_lock);
#endif

        pthread_spin_destroy(&m_spinlock);
    }

Internal::~Internal(){
#ifdef INTERNAL_USE_SPINLOCKS
  pthread_spin_destroy(&_spin); 
#else
  pthread_mutex_destroy(&_mutex); 
  pthread_cond_destroy(&_cond); 
#endif
}

int init_pipe(struct pipe* p, int n_dst, int q_depth, int buf_sz)
{
	int free_bufs = n_dst * q_depth;
	struct pipe_elem* msg_all = (struct pipe_elem*)malloc(
		free_bufs * (sizeof(msg_all[0]) + buf_sz));
	void* buf_ptr;
	int def_dst_n, i;

	// allocate bufs
	if (!msg_all)
		return -1;
	p->priv = (void*)msg_all;

	// initialize src
	if (init_queue(&p->src, free_bufs))
		goto free_buf;
	
	// initialize dst
	def_dst_n = sizeof(p->_dst) / sizeof(p->_dst[0]);
	p->dst = n_dst < def_dst_n ? &p->_dst[0] :
		(struct queue*)malloc(n_dst * sizeof(p->dst[0]));
	if (!p->dst)
		goto free_src;
	for (i = 0; i < n_dst; i++) {
		if (init_queue(&p->dst[i], q_depth))
			goto free_dst;
	}

	// init spinlock
	if (pthread_spin_init(&p->lock, PTHREAD_PROCESS_PRIVATE)) 
		goto free_dst;

	// push buffers onto src
	buf_ptr = (void*)&msg_all[free_bufs];
	for (i = 0; i < free_bufs; i++) {
		msg_all[i].buf = buf_ptr;
		msg_all[i].seq = 0;
		msg_all[i].ref_cnt = 0;
		buf_ptr += buf_sz;

		assert(!enqueue(&p->src, &msg_all[i]));
	}

	p->n_dst = n_dst;
	return 0;

free_dst : 
	for (i--; i >= 0; i--)
		close_queue(&p->dst[i]);
free_src : 
	close_queue(&p->src);
free_buf : 
	free(msg_all);
destroy_lock : 
	pthread_spin_destroy(&p->lock);
	
	return -1;
}

	HawkSpinLock::~HawkSpinLock()
	{
		if (m_pSpinLock)
		{
			pthread_spin_destroy((pthread_spinlock_t*)m_pSpinLock);
			HawkFree(m_pSpinLock);
			m_pSpinLock = 0;
		}
	}

void
dirjob_free (struct dirjob *job)
{
        assert (list_empty (&job->list));

        pthread_spin_destroy (&job->lock);
        free (job->dirname);
        free (job);
}

void thread_context_destroy(struct netsniff_ng_thread_context * thread_ctx)
{
	assert(thread_ctx);

	pthread_attr_destroy(&thread_ctx->thread_attr);
	pthread_mutex_destroy(&thread_ctx->wait_mutex);
	pthread_cond_destroy(&thread_ctx->wait_cond);
	pthread_spin_destroy(&thread_ctx->config_lock);
}

bool spinlock_destroy(spinlock_t *lock)
{
    const int err = pthread_spin_destroy(lock);
    if (err) {
        error("spinlock error: %s", errno_error(err));
        return false;
    }
    return true;
}

void nk_port_destroy(nk_port *port) {
  if (!port) {
    return;
  }
  assert(nk_msg_port_empty(&port->msgs));
  assert(nk_schob_runq_empty(&port->thds));
  pthread_spin_destroy(&port->lock);
  nk_freelist_free(&port->host->port_freelist, port);
}