Look at thread::join(), thread_group::join()

> I m writting a program which create threads following commands received
> on a socket connection.
> When exiting, I'd like to wait that all dynamically created threads have
> ended their jobs.
> I thought about using a shared variable (with mutual exclusion) that
> threads would increment at start and decrement at end.
> And then the program would stop, loop on sleep() while this shared
> variable is still > 0.
>
> Is there a better way to wait for the end of threads ?

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