implementing future::then() equivalent for asynchronous execution in c++11

Question

I have a few questions about the implementation of the function then() in Herb Sutter\'s talk. This function is used to chain asynchronous operations, the param

Answer 1

The problem with this approach to .then() is that you spawn 2 threads (that is costly) simultaneously, and second of them would block on its future.get/wait (if the first one would run long enough, of course) So, its better to use the work queue, to serialize the jobs execution order (and re-cycle the existing threads). Just look for a good Thread pool pattern implementation