Is this on Windows? There shouldn't be any $SIG{CHLD} handler necessary, as P::FM uses waitpid to determine when a process ends and whether to call run_on_finish(). I'm not sure if that would work on Windows.

Or is there some other code calling wait() or waitpid()?

Are you calling wait_all_children() after you're done?

In reply to Re: Parallel::ForkManager run_on_finish() bug? by runrig
in thread Parallel::ForkManager run_on_finish() bug? by bot403

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