Stackless Python

简介

Stackless Python 是 Python 编程语言的一个增强版本。它能让程序员在获得基于线程编程的好处的同时，还不用考虑传统线程带来的性能和灵活性的问题。由 Stackless 添加到 Python 中的微线程是一个便宜且轻量的便利工具，如果用得恰当的话，它能提供以下好处：

• 改良程序结构
• 增强代码可读性
• 提高程序员生产力

Stackless Python is an enhanced version of the Python programming language. It allows programmers to reap the benefits of thread-based programming without the performance and complexity problems associated with conventional threads. The microthreads that Stackless adds to Python are a cheap and lightweight convenience which can if used properly, give the following benefits:

• Improved program structure.
• More readable code.
• Increased programmer productivity.

特性

对于所有通过使用 Stackless 所能获得的便利来说，通过 stackless 模块暴露出来的功能其实只有其中很少的一部分。通过阅读以下页面提供的信息，你将会对这些概念熟悉起来的：

• Microthreads. Tasklets 对函数进行包装，然后便可以作为微线程而启动。

• Channels. Channels 可以用来在 tasklets 之间进行双向的通讯。

• Scheduling. 内置了一个 round robin 调度器。它可以以合作或抢占式两种方式对 tasklets 进行调度。

• Serialisation. Tasklets 可以通过 pickling 序列化到磁盘上，稍后再继续执行。

For all the convenience gained through using Stackless, there is really only a minimal amount of functionality exposed through the stackless module. You can get more familiar with these aspects by reading the information provided in the following pages:

• Microthreads. Tasklets wrap functions allowing them to be launched as microthreads.

• Channels. Channels can be used for bidirectional communication between tasklets.

• Scheduling. A round robin scheduler is built in. It can be used to schedule tasklets either cooperatively or preemptively.

• Serialisation. Tasklets can be serialised to disk through pickling for later resumption of execution.

相关文档

• 官方首页

• Introduction to Concurrent Programming with Stackless Python

• Continuations and Stackless Python Or "How to change a Paradigm of an existing Program"

• pep-0219 Stackless Python

• Designing thread pickling or "the Essence of Stackless Python"

• Multithreaded Game Scripting with Stackless Python

• Stackless

• Python Microthreads

相关代码

• 使用 yield 模拟 stacklesspython, 也许能帮助理解其机制

讨论