Careercup - Microsoft面试题 - 5718181884723200

difference between thread and process.

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