multithreading - 什么是线程？

Question

我对“pthread”和“thread”的概念感到困惑。我知道 pthread 是 POSIX 线程的缩写形式，它是 UNIX 中使用的一种标准化线程。但是人们经常使用“线程”来指代一个线程。 pthread 和线程等效吗？还是 pthread 只是 UNIX 中使用的线程的名称？
提前致谢。

Answer 1

线程是一个通用的概念。 Wikipedia defines it as :

In computer science, a thread of execution is the smallest sequence of programmed instructions that can be managed independently by an operating system scheduler. A thread is a light-weight process.

Pthreads 或 POSIX threads是在 Unix 上与 C 程序一起使用的概念的一种实现。大多数现代语言都有自己的线程实现。从那个网页:

Pthreads are defined as a set of C language programming types and procedure calls, implemented with a pthread.h header/include file and a thread library - though this library may be part of another library, such as libc, in some implementations.