操作系统课后习题4.11.2
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2023-04-12
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4.11.2复习题
● https://blog.csdn.net/qq894040717/article/details/83616391
● 答案图文版
● （Table 3.5 lists the basic elements of a process control block in an operating system
without threads. For multithreaded systems, which of these elements may belong to
thread control blocks and which may belong to process control
blocks?）表3.5列出了在一个没有线程的操作系统中进程控制块的基本元素。对于多线程系统，这些
元素中哪些可能属于线程控制块，那些可能属于进程控制块？
● （This is usually different for different systems, but generally speaking, the process is the
owner of resources, and each thread has its own execution state. Some conclusions about
each item in table 3.5 are as follows: process identification: the process must be identified,
and each thread in the process must also have its own ID. Processor status information:
this information is usually only related to the process. Process control information:
scheduling and status information are mainly at the thread level; Data structures can
appear at both levels; Inter process communication and inter thread communication can
be supported; Privileges can exist at both levels; Storage management is usually at the
process level; Resource information is usually also at the process
level.）这对于不同的系统来说通常是不同的，但一般来说，进程是资源的所有者，而每个线程都
有它自己的执行状态。关于表3.5中的每一项的一些结论如下：进程标识：进程必须被标识，而进
程中的每一个线程也必须有自己的ID。处理器状态信息：这些信息通常只与进程有关。进程控制信
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