Thanks a lot, I like this.

I have two more question though:

According to the the documentation wait any returns negative values when the object is "is an abandoned mutex" (whatever that is). As you are waiting on process-objects I think this can not happen - so do you really neeed the abs()?

And strictly speaking wait_any does not wait for process termination but for the process to become "signalled" (so Windows does have some sort of signals :-). Are there any circumstances that a process can become "signalled" (i.e. wait_any returns) but does not terminate?

Many thanks!