How can I handle errors in C++ threading?

How can I handle errors in C++ threading?

In C++, you can handle errors in threading by using try-catch blocks around your thread functions. This allows you to catch exceptions thrown during thread execution.

What if I want to pass exceptions from a thread back to the main thread?

You can use a shared variable or a future/promise mechanism to communicate exceptions back to the main thread. This way, you can retrieve the exception after the thread has finished.

Can you give me an example of using futures for error handling?

Sure! You can create a std::promise in the main thread, pass its future to the worker thread, and set the exception in the promise if an error occurs. The main thread can then check the future for any exceptions.

What are some common pitfalls in threading error handling?

Common pitfalls include not properly synchronizing access to shared resources, failing to join threads, and not handling exceptions correctly, which can lead to resource leaks or undefined behavior.