📜  进程和线程的区别

📅  最后修改于: 2021-09-15 01:18:05             🧑  作者: Mango

过程
进程意味着任何程序都在执行中。进程控制块控制任何进程的操作。进程控制块包含有关进程的信息,例如进程优先级、进程 ID、进程状态、CPU、寄存器等。进程可以创建其他进程,这些进程称为子进程。进程需要更多时间来终止,并且它是隔离的,这意味着它不与任何其他进程共享内存。

该进程可以具有以下状态,例如新的、就绪的、运行的、等待的、终止的、暂停的。

主题
线程是进程的一部分,意味着一个进程可以有多个线程,并且这些多个线程包含在一个进程中。一个线程有 3 种状态:运行、就绪和阻塞。

与进程相比,线程终止所需的时间更少,并且类似的进程线程不会隔离。

进程和线程的区别:

S.NO Process Thread
1. Process means any program is in execution. Thread means segment of a process.
2. Process takes more time to terminate. Thread takes less time to terminate.
3. It takes more time for creation. It takes less time for creation.
4. It also takes more time for context switching. It takes less time for context switching.
5. Process is less efficient in term of communication. Thread is more efficient in term of communication.
6. Process consume more resources. Thread consume less resources.
7. Process is isolated. Threads share memory.
8. Process is called heavy weight process. Thread is called light weight process.
9. Process switching uses interface in operating system. Thread switching does not require to call a operating system and cause an interrupt to the kernel.
10. If one process is blocked then it will not effect the execution of other process  Second thread in the same task couldnot run, while one server thread is blocked.
11. Process has its own Process Control Block, Stack and Address Space. Thread has Parents’ PCB, its own Thread Control Block and Stack and common Address space.