操作系统概念习题答案第九版 第三章 3.19
时间: 2023-10-05 13:10:40 浏览: 72
3.19 What is the difference between a process and a program? What is the difference between a process and a thread?
A process is an instance of a program in execution. A program is a set of instructions stored on disk, whereas a process is the actual execution of those instructions in memory. A process has its own memory space, system resources, and state.
A thread is a lightweight process that can be managed independently within a single process. Each thread has its own stack, but shares the same memory space and system resources as other threads in the process. Threads allow for concurrent execution within a single process, and can improve performance by reducing overhead associated with creating and managing multiple processes.