just::thread Complete C++ Standard Thread Library by Just Software Solutions

*this has an associated asynchronous result. (bool)e is true.

Store e in the asynchronous result associated with *this. Schedule the associated asynchronous result to be made ready when the current thread exits.

The asynchronous result associated with *this has a stored exception, but is not ready until the current thread exits. Threads blocked waiting for the asynchronous result will be unblocked when the current thread exits.

An exception of type std::future_error with an error code of std::future_errc::promise_already_satisfied if the asynchronous result already has a stored value or exception.

Multiple concurrent calls to set_value(), set_value_at_thread_exit(), set_exception() and set_exception_at_thread_exit() are serialized. The completion of the thread that made a successful call to set_exception_at_thread_exit() happens-before a call to std::future<ResultType>::get() or std::shared_future<ResultType>::get() which retrieves the exception stored.