操作系统原理实例代码，涉及进程、线程、信号量等操作系统的原理和思想的实现。-operating system code examples principle involved process, threads, signals and so on the operating system principles and ideas of achievement.

操作系统课程设计——两个线程同步，包括线程创建、挂起与等待。-Operating systems curriculum design- the two thread synchronization, including thread creation, hang and wait.