如何在受监视的过程中检测无限循环 [英] How to detect an infinite loop in a monitored process

问题描述

我正在使用Python(winappdbg)监视进程(主要功能是捕获异常).

I'm using Python (winappdbg) to monitor a process (the main feature is to catch the exceptions).

但是我也想检测无限循环.

But I would like also to detect infinite loops.

您知道使用Python做到这一点的方法吗? 有无winappdbg ...

Do you know a way to do that with Python? With or without winappdbg ...

推荐答案

检测无限循环的唯一方法是在循环本身中包含对那些条件的测试，这些条件将使它永无止境.

The only way to detect an infinite loop is to include in the loop itself a test for those conditions that would bring it to never end.

例如:如果您的循环应该使变量减小直到它达到零(将是退出条件)，则应包括一个测试，以测试我所说的正确的工作条件" .在此示例中，该名称为:var < var_of_previous_iteration.

For example: if your loop is supposed to make a variable decrease until it reaches zero (var == 0 would be the exit condition), you should include a test for what I would call "proper working condition". In this example this would be: var < var_of_previous_iteration.

捕获无限循环的另一种(确定性较低的)方法可能是包括计时器，如果循环持续的时间超过给定的时间限制，则触发异常[这是一个卑鄙的行为，因为执行速度可能会受到例如系统忙于执行其他操作的影响].

Another (less deterministic) way to catch infinite loops could be to include a timer and trigger an exception if the loop last longer than a given time limit [this is a hugly hack though, as execution speed could be affected for example by the system being busy doing something else].

HTH！

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