boost::thread exit code?

Question

What is the standard way to get an exit code from a boost::thread ?
The docs don't seem to touch on this subject at all.

Answer 1

I don't know that the thread exit code is available as that's operating system specific. You could simulate passing an exit code or result code by doing something like this:

struct callable {
    int result;
    void operator()()
    {
        result = 42;
    }
};

void process_on_thread() {
    callable x;
    boost::thread processor(x);

    processor.join();
    int result = x.result;
}