Handling exceptions from thread functions
In the previous recipe, we introduced the thread support library and saw how to do some basic operations with threads. In that recipe, we briefly discussed exception handling in thread functions and mentioned that exceptions cannot leave the top-level thread function. This is because they cause the program to abnormally terminate with a call to
On the other hand, exceptions can be transported between threads within an
std::exception_ptr wrapper. In this recipe, we will see how to handle exceptions from thread functions.
You are now familiar with the thread operations we discussed in the previous recipe, Working with threads. The
exception_ptr class is available in the
std namespace, which is in the
mutex (which we discussed in more detail previously) is also available in the same namespace but in the