计算机科学技术

• 信号量

  And to realizing the communication and synchronism among the tasks with semaphore, message mailbox and message queue has introduced the detailed one.

  文中对用信号量、邮箱、消息队列来实现任务间的通信和同步进行了详细的介绍。

• 信号机

• 信号塔

• 打信号

• 信号灯

• 旗号

电子、通信与自动控制技术

• 信号量

  In the prototype system, Data Pre-fetching Based on Read-Write Semaphore is used in cache management; Cascade Broadcast is used in service for demanding requests of hot movies; FCFS Dynamic Optimized Patching Multicast is used in service for lukewarm movies.

  该原型系统采用基于读写信号量机制的自适应缓存数据预取算法进行缓存管理；采用堆叠式广播算法对极少数热门影片进行广播；采用FCFS动态窗口优化补缀多播算法来满足一般影片的点播请求。