Java 调试中的回溯
我一直在寻找Java调试时是否可以回溯的答案。例如，如果我有代码：
int x = 1
int y = 0
//Exception will happen here
int z = x/y
如果我遇到异常，我想返回。 不仅像删除帧一样，还恢复对堆所做的实际更改。 目前可能吗？
提前致谢。
I have been searching for an answer to if it's possible to backtrack when doing Java debugging. For instance if I have the code:
int x = 1
int y = 0
//Exception will happen here
int z = x/y
And if I'm hitting the exception, I would like to go back.
And not just like dropping the frame, but also revert actual changes made to the Heap.
Is that currently possible?
Thanks in advance.
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有一个名为 Chronon 时间旅行调试器 的工具，
它声称...
There is tool called Chronon Time Travelling Debugger
It claims...
除非您实现某种撤消堆栈，否则这是不可能的，这取决于您所做的事情，可能是极端的过度设计。如果您使堆对象不可变，并且只有在一切完成后才更改调用者可见的指针而不引发异常，那么您将获得所需行为的相对较好的近似值，但很难使 ti 线程-安全，无需使用过多的同步，并且可能生成大量的样板代码，这些代码不会给流程增加很多价值......
It's not possible unless you implement some kind of undo stack, which, depending on what you do, could be extreme over-engineering. If you make your heap objects unmutable, and only change pointers visible to the caller once everything has completed without throwing an exception, then you'd get a relatively good approximation of the behavior you want, but it'll be hard to make ti thread-safe without using excessive synchronization, and could generate tons of boilerplate code that doesn't add a lot of value to the processes...
您是否尝试过Omniscient 调试器？
Have you tried Omniscient debugger?