如何用软件中断C中的运行功能? [英] How to software interrupt a running function in C?

问题描述

我想在函数运行时生成中断，然后希望CPU执行某些特定的ISR，完成ISR后，该函数将恢复执行.我正在使用Windows XP和MinGW编译器.

I want to generate an interrupt while a function is running and then I want the CPU to execute some specific ISR, and after finishing the ISR, the function will resume executing. I am using Windows XP and the MinGW compiler.

推荐答案

实际上没有硬件，我想首先以某种方式生成中断，然后稍后再处理，我将在实际硬件上进行处理

no hardware is there actually I want first to generate interrupt somehow and handle it later on I will do it on actual hardware

真正的硬件中断将切换CPU引脚之一，并将其​​分配给ISR.我想不出任何真正透明的方式来模仿它.

A real hardware interrupt will toggle one of the CPU pins and cause it to dispatch to the ISR. I can't think of any really transparent way to emulate that.

一种暂停当前正在运行的功能的方法可能是使用

One way to pause the currently-running function might be to use the SuspendThread function, and then use a different thread to run the ISR.

调查的另一种可能性是使用

A different possibility to investigate might be to use Fibers.

修改

如 cxxl的答案所建议的那样，另一种可能性是使用实时优先级线程:

As cxxl's answer suggested, another possibility is to use a real-time priority thread:

• 具有两个线程，一个线程运行您的函数，另一个线程运行模拟的ISR
• 在两个线程上都使用"CPU亲和力"功能，以确保它们都在同一CPU上运行
• 将ISR线程的优先级设置为实时"

然后，每当允许运行ISR仿真线程时，它将抢占另一个线程.

Then, whenever you allow the ISR-emulating thread run, it will pre-empt the other thread.

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