在C ++中处理CPU异常 [英] Handling CPU exceptions in C++

问题描述

是否有跨平台的方法来处理CPU异常（例如分段错误或被零除）？可以说，我需要调用一些潜在的不安全函数（例如，从插件文件中调用），这些函数可能导致段错误或执行之前无法测试的其他一些问题。我知道C标准库具有信号处理功能，但是我不知道如何使用它们来处理问题以避免程序终止（我想，我不能只跳转到有问题的函数执行之前的位置） ，还是可以？）。
在Windows下，我可以使用SEH异常处理程序，但是在Linux或任何其他操作系统下，则不能这样做。使用我自己的异常处理程序来处理这些问题该怎么办，Windows / Linux之间有多少不同？

is there a cross-platform way to handle the CPU exceptions like segmentation faults, or division by zero? Lets say, I need to call some potentially unsafe functions (for example from a plug-in file), that can cause a segfault, or some other problems that I cannot test before I execute it. I know, that the C standard library has signal handling functions, but I don't know how to use them to handle the problem to avoid the program termination (I guess, I can't just jump to the location before the problematic functions execution, or can I?). Under windows I could use the SEH exception handlers, but I can't do that under Linux, or any other OS. What about using my own exception handler to handle these problems, how much is that different between Windows/Linux? Would that be even possible (via assembler - lets say just on the x86 platform)?

我主要是出于好奇而问，我不是想解决一个可能的问题（通过汇编程序-可以说是在x86平台上）吗？存在的问题（尚未）。
谢谢

I'm asking mostly out of curiosity, I'm not trying to solve an existing problem (yet). Thanks

推荐答案

libsigsegv 是用于处理分段错误和堆栈溢出的跨平台库。但是，在大多数情况下，当您检测到分段错误时，正确的做法是尽快终止执行，而不是尝试从中恢复。段故障通常表示错误或内存损坏，一旦您损坏了内存，从中恢复几乎是不可能的。

libsigsegv is a cross-platform library for handling segmentation faults and stack overflows. However, in the vast majority of cases, when you detect a segmentation fault, the right thing to do is to terminate execution as fast as possible instead of trying to recover from it. A segfault is usually indicative of a bug or corrupted memory, and once you have corrupted memory, it's virtually impossible to recover from that.

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