Workaround for blocking async?

Question

The async call below is blocking because the destructor of the returned future is blocking:

void foo() {}

void foo_async() {
    std::async(std         


        

Answer 1

If you really want to fire-and-forget the call to foo(), I would say your workaround is OK.

Otherwise, just do auto f = std::async(std::launch::async, foo);, and possibly return the future from foo_async().