Function cache_tcp_send_buff

adapter/micro_thread/mt_cache.cpp:496–537

}

int32_t cache_tcp_send_buff(TRWCache* cache, uint32_t fd, const void* data, uint32_t len)
{
    if ((NULL == cache) || (NULL == data))
    {
        return -1;
    }

    int32_t ret = cache_tcp_send(cache, fd);
    if (ret < 0)
    {
        MTLOG_ERROR("tcp socket[%d] send cache data failed, rc: %d", fd, ret);
        return ret;
    }

    int32_t send_len = 0;
    if (cache->len == 0)
    {
        mt_hook_syscall(send);
        ret = ff_hook_send(fd, data, len, 0);
        if (ret >= 0)
        {
            send_len += ret;
        }
        else
        {
            if (errno != EAGAIN)
            {
                MTLOG_ERROR("tcp socket[%d] send failed, error: %d[%m]", fd, errno);
                return -2;
            }
        }
    }

    int32_t rc = cache_append_data(cache, (char*)data + send_len, len - send_len);
    if (rc < 0)
    {
        MTLOG_ERROR("tcp socket[%d] apend data failed, rc: %d", fd, rc);
        return -3;
    }

    return send_len;
}

uint32_t get_data_len(TBuffVecPtr multi)
{