main（）会捕获线程抛出的异常吗？ [英] Will main() catch exceptions thrown from threads?

问题描述

我有一个很大的应用程序，可以动态加载共享对象并在共享对象中执行代码。为了预防起见，我尝试对 main 中的所有内容进行尝试/捕获。我为3件事创建了一个捕获： myException （内部例外）， std :: exception 和 ... （捕获所有异常）。

I have a pretty large application that dynamically loads shared objects and executes code in the shared object. As a precaution, I put a try/catch around almost everything in main. I created a catch for 3 things: myException (an in house exception), std::exception, and ... (catch all exceptions).

作为共享对象执行的一部分，许多 pthreads 已创建。当线程引发异常时，它不会被 main 捕获。这是标准行为吗？

As part of the shared objects execution, many pthreads are created. When a thread throws an exception, it is not caught by main. Is this the standard behavior? How can I catch all exceptions, no matter what thread they are thrown from?

推荐答案

将如何处理所有异常？ （）捕获线程抛出的异常？

Will main() catch exceptions thrown from threads?

否

当线程引发异常时，不会被main捕获。这是标准行为吗？

When a thread throws an exception, it is not caught by main. Is this the standard behavior?

是的，这是标准行为。

要捕获源自线程 X 的异常，您必须进行 try - catch线程 X 中的子句（例如，围绕线程函数中的所有内容，类似于您在 main ）。

To catch an exception originating in thread X, you have to have the try-catch clause in thread X (for example, around everything in the thread function, similarly to what you already do in main).

有关相关问题，请参见如何在线程之间传播异常？

For a related question, see How can I propagate exceptions between threads?

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