你是怎么做到用C非阻塞控制台I / O在Linux上？ [英] How do you do non-blocking console I/O on Linux in C?

问题描述

你如何用C的Linux / OS X做非阻塞IO控制台？

How do you do nonblocking console IO on Linux/OS X in C?

推荐答案

您不这样做，真的。该TTY（控制台）是pretty有限的设备，并pretty多不做非阻塞I / O。当你看到的东西，看起来像你做什么非阻塞I / O，说在诅咒/ ncurses的应用程序，被称为的原始I / O 的。在原始I / O，还有人物的无间pretation，没有擦除处理等相反，你需要编写自己的code，对于数据的检查，同时做其他的事情。

You don't, really. The TTY (console) is a pretty limited device, and you pretty much don't do non-blocking I/O. What you do when you see something that looks like non-blocking I/O, say in a curses/ncurses application, is called raw I/O. In raw I/O, there's no interpretation of the characters, no erase processing etc. Instead, you need to write your own code that checks for data while doing other things.

在现代的C程序，可以简化这个另一种方式，通过将主机I / O成的线程的或轻量级进程。然后将I / O可以继续以通常的阻挡方式，但数据可被插入到一个队列被另一个线程上处理。

In modern C programs, you can simplify this another way, by putting the console I/O into a thread or lightweight process. Then the I/O can go on in the usual blocking fashion, but the data can be inserted into a queue to be processed on another thread.

下面是一个诅咒，覆盖更教程。

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