swoole_process提供的statQueue用於統計佇列狀態，其返回一個數組，裡面包括了訊息總個數和總的位元組數。

array swoole_process->statQueue();

下面我們看看其實現。

static PHP_METHOD(swoole_process, statQueue)
{
    swWorker *process = swoole_get_object(getThis());
    if (!process->queue)
    {
        swoole_php_fatal_error(E_WARNING, "no queue, can't get stats of the queue.");
        RETURN_FALSE;
    }

    int queue_num = -1;
    int queue_bytes = -1;
    if (swMsgQueue_stat(process->queue, &queue_num, &queue_bytes) == 0)
    {
        array_init(return_value);
        sw_add_assoc_long_ex(return_value, ZEND_STRS("queue_num"), queue_num);
        sw_add_assoc_long_ex(return_value, ZEND_STRS("queue_bytes"), queue_bytes);
    }
    else
    {
        RETURN_FALSE;
    }
}
 

int swMsgQueue_stat(swMsgQueue *q, int *queue_num, int *queue_bytes)
{
    struct msqid_ds __stat;
    if (msgctl(q->msg_id, IPC_STAT, &__stat) == 0)
    {
        *queue_num = __stat.msg_qnum;
        *queue_bytes = __stat.msg_cbytes;
        return 0;
    }
    else
    {
        return -1;
    }
}