The strawberry motif on the quilt hardly guarantees sweet dreams, and the stuffed piranha on top of the computer monitor won't help an ad writer produce snappy copy. 被子上的草莓图案很难保证拥有甜蜜的睡梦,计算机显示器上的填充水虎鱼玩具将无助于广告作家写出漂亮的文稿。
This is inconvenient and does not scale well: servers frequently need to monitor hundreds of sockets so, on each iteration, the code has to copy the lists before calling Select(). 这就给用户带来了很大的不便,而且不宜扩展应用的规模:服务器常常都要监控上百个socket,而在每一次循环中,调用Select()方法前都要复制所有的列表。
The source data which system to monitor is only the scope of data all flow through the system. The system copys the data from transaction storage media, the message queue. The data here is a deep copy of the real data. 系统监控的源数据仅是所有流经系统监控范围的数据,系统通过拷贝交易的存放介质&消息队列来获取数据,这里的数据是真实数据的完全拷贝。