Can you elaborate on this? Are you saying these tools could be used to wrap a running process in such a way that you could tell apart individual print statements during runtime? (I haven't used the tools you suggest.)

Yes, basically.

The strace option should be doable. Terminal & timer a bit more work.

So long as the print statements come between other blocks of code, though, I'd look at strace (or dtrace, gdb, etc.).

Assuming Linux/Unix OS.

I'll research it, thank you. If I can't figure it out (I'm not great at systems-level programming), are you available for a small amount of contract work?

Email contact is in my description.

Let me know what OS / processes you're working with.

I'm much more a shell hacker than systems programmer but this smells doable.