操作系统课件:Chapter-02进程管理 - 多道程序技术运行的进程管理
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Chapter-02 Process Management Chapter-02 Process Management in the operating system courseware covers the following topics: 2.1 What is a process 2.2 Process control 2.3 Process synchronization 2.4 Classic IPC problem 2.5 Pipe 2.6 Advanced communication of processes 2.7 Thread What is a process? In order to improve the utilization of various resources in the computer system, modern operating systems widely adopt multi-programming technology, allowing multiple programs to exist and run in the system simultaneously. What is a process? (1) Why processes? What is a process? (2) What is a process? (3) In a multi-program system, programs are executed concurrently and share system resources. The CPU needs to switch back and forth among the running programs, making it difficult to describe these concurrent activities. The concept of "process" was first introduced in MIT's MULTICS system. What is a process? (4) A process should include: - The program's code - The program's data - The value in the PC indicating the next instruction to be executed - The current value of a set of general-purpose registers, heap, and stack - A set of system resources (such as open files) A process = a program in execution What is a process? (5) A program is text, a description of statements (static) A process is a running program with context information In summary, Chapter-02 Process Management in the operating system courseware provides a comprehensive overview of what a process is, the control of processes, process synchronization, classic IPC problems, pipe, advanced communication of processes, and threads. It explains the need for processes in a modern computer system, their definition and components, and the concept of program execution. This chapter is essential for understanding how processes are managed in an operating system and their role in achieving efficient resource utilization.
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