Careercup - Microsoft面试题 - 5718181884723200

2014-05-11 05:55

题目链接

原题：

difference between thread and process.

题目：请描述进程和线程的区别。

解法：操作系统理论题。标准答案在恐龙书上，我自己回忆了一点。我想就算是面试官也不会一字一句地要求你背书的，对于要点掌握住就可以了。

代码：

 1 // http://www.careercup.com/question?id=5718181884723200

 2 Answer:

 3     Process:

 4         1. Basic element of resource allocation in the operating system.

 5         2. Possesses independent resources:

 6             a. code segment

 7             b. data segment

 8                 i. constant data

 9                 ii. global variable

10                 iii. stack

11                 iv. heap

12             c. register

13             d. program counter

14         3. Have independent virtual address mapping.

15         4. It has life cycle, it is running, in contrast to a program.

16     Thread:

17         1. Basic element of CPU scheduling.

18         2. Possesses part of independent resources:

19             a. register

20             b. stack

21             c. program counter

22         3. Multiple threads share part of resources in same process:

23             a. code segment

24             b. data segment

25                 i. constant data

26                 ii. global variable

27                 iii. heap

28         4. All threads in a process share the same address space.

29         5. It has life cycle