written 7.3 years ago by
teamques10
★ 64k
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• modified 7.3 years ago |
Mumbai University > Computer Engineering > Sem 5 > Operating System
Marks: 10M
Years: May 2016
|
written 7.3 years ago by
teamques10
★ 64k
|
• modified 7.3 years ago |
| Process | Thread |
|---|---|
| A program in execution is often referred as process. | A thread is a subset (part) of the process. |
| A process consists of multiple threads. | A thread is a smallest part of the process that can execute concurrently with other parts (threads) of the process. |
| A process is sometime referred as task. | A thread is often referred as lightweight process. |
| A process has its own address space. | A thread uses the process’s address space and share it with the other threads of that process. |
| A process can communicate with other process by using inter-process communication. | A thread can communicate with other thread (of the same process) directly by using methods like wait (), notify (), notify All (). |
| New threads are easily created. | The creation of new processes require duplication of the parent process. |
| A process does not have control over the sibling process, it has control over its child processes only. | Threads have control over the other threads of the same process. |
| Per Process items: 1) Address space 2) Global variables 3) Open files 4) Child processes 5) Pending alarms 6) Signals and signal handlers 7) Accounting information | Per thread items : 1) Program Counter 2) Registers 3) Stack 4)State |
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