NPTL和POSIX线程之间有什么区别? [英] What is the difference between NPTL and POSIX threads?

问题描述

NPTL和POSIX线程之间的基本区别是什么?这两个是如何演变的?

What is the basic difference between NPTL and POSIX threads? How have these two evolved?

推荐答案

POSIX线程(pthread)不是实现，它是API函数规范(纸上标准，英文，英文)，多个函数的名称以pthread_，并且在<pthread.h>标头中定义. POSIX也是一组规范.

POSIX threads (pthread) is not an implementation, it is a API specification (a standard, on paper, in english) of several functions whose name starts with pthread_ and which are defined in <pthread.h> header. POSIX is also a set of specifications.

NPTL现在位于Linux上的 GNU Libc 中，并且是(或至少非常努力地)实现POSIX线程.它是Linux系统上的一堆源代码和二进制代码. 使用gcc -pthread编译并与-pthread链接的应用程序现在在Linux上使用NPTL代码.

NPTL is now inside GNU Libc on Linux and is (or at least tries very hard to be) an implementation of POSIX threads. It is a bunch of source and binary code on your Linux system. An application compiled with gcc -pthread and linked with -pthread uses NPTL code on Linux today.

存在pthread -s的替代实现:在Linux上， MUSL Libc 旨在与Posix兼容(表示具有pthreads)；在其他Posix系统(AIX，Solaris等)上，您也具有pthread(但它们不是NPTL或Glibc).

There exist alternative implementations of pthread-s: on Linux, the MUSL Libc aims to be Posix compliant (which means having pthreads); on other Posix systems (AIX, Solaris, ...) you also have pthreads (but they are not NPTL or Glibc).

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