Chapter s Operating System 5.1.2 User interface related functions In a concurrent program, different parts of the program can execute concurrently. For this, the Os has to be aware the identities of the different parts which can execute concurrently This function is typically not served by the user interface of the OS. In this chapter it is assumed that each program is sequential in nature 而在并发程序中,程序的不同部分可被同时执行。为此,操作 系统需要了解这些可以同时执行的不同部分的实体,操作系统 的用户接口通常不支持这一功能。在本章中,假设所有的程序 都是顺序执行的 《什第机专出美语 5-23Chapter 5 Operating System 计算机专业英语 5-23 In a concurrent program, different parts of the program can execute concurrently. For this, the OS has to be aware the identities of the different parts which can execute concurrently. This function is typically not served by the user interface of the OS. In this chapter it is assumed that each program is sequential in nature. 而在并发程序中，程序的不同部分可被同时执行。为此，操作 系统需要了解这些可以同时执行的不同部分的实体，操作系统 的用户接口通常不支持这一功能。在本章中，假设所有的程序 都是顺序执行的。 5.1.2 User interface related functions