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：

 // http://www.careercup.com/question?id=5718181884723200
 Answer:
     Process:
         . Basic element of resource allocation in the operating system.
         . Possesses independent resources:
             a. code segment
             b. data segment
                 i. constant data
                 ii. global variable
                 iii. stack
                 iv. heap
             c. register
             d. program counter
         . Have independent virtual address mapping.
         . It has life cycle, it is running, in contrast to a program.
     Thread:
         . Basic element of CPU scheduling.
         . Possesses part of independent resources:
             a. register
             b. stack
             c. program counter
         . Multiple threads share part of resources in same process:
             a. code segment
             b. data segment
                 i. constant data
                 ii. global variable
                 iii. heap
         . All threads in a process share the same address space.
         . It has life cycle