调试和计数断点命中 [英] Debugging and counting breakpoint hits

问题描述

有时，当我检查一个没有写的代码时，我会在调试模式下启动eclipse并使用数字来理解一个程序。例如，如果它们是从数据库中检索到的n个项目，那么知道服务中有n个已处理的项目可以很有趣。

Sometimes when I examine a code I didn’t write, I launch eclipse in debug mode and use figures to understand a program. For example, if they are n items retrieved from the DB, it can be interesting to know that there’re n processed items in a service, etc.

当循环是使用，事情变得更复杂：如果我们处于while循环，执行次数没有定义，如果有替代，执行流程可以大大改变。

When loops are used, things get more complicated: if we’re in a "while" loop, the number of execution is not defined and if there are alternatives, the flow of execution can greatly change.

为此，我有时在一部分代码中设置一个断点，并计算我们达到的次数。

For this purpose, I sometimes set a breakpoint in a portion of code and count how many times we reach it.

当然不是很方便，我想知道是否有一种计算断点命中次数的方法。我知道Eclipse可以在固定的点击次数后暂停执行，但是我只是希望Eclipse以正常的执行流程来计数。

Of course, it’s not very convenient and I wonder if there is a way to count the number of breakpoint hits. I know that Eclipse can suspend execution after a fixed number of hits but I just want Eclipse to count them in a normal flow of execution.

我很高兴听到您的意见。

I’d be glad to hear your opinions about it.

谢谢！

推荐答案

您可以添加一个条件进入你的断点。最简单的可能是这样的：

You can add a condition into your breakpoint. The simplest one could look something like this:

System.err.println("Passing checkpoint");
return false;

您还可以通过调用自己的静态类来扩展它：

You can also extend it by calling your own static class:

org.foo.StaticCounter.COUNTER++;
System.err.println("Passing checkpoint " + org.foo.StaticCounter.COUNTER);
return false;

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