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Short answer: You cannot with Proc::Simple (longer: in your case when starting a sub{...} as a child process)

This is what happens in the child part of the fork() that is executed for your $func = sub{...};

# in Proc::Simple # $func = sub{ ... }; # your code ... if(ref($func) eq "CODE") { $self->dprt("Launching code"); $func->(@params); exit 0; # Start perl subroutine } else { ...
So, the exit 0 (successful execution) is all that is returned from your sub{...}. The $return value is discarded.

Your sub{...} could return the result to the main process by means of IPC or by storing the result in a temporary file (e.g. YAML, JSON, Storable, etc.). The parent process could read the result from a pipe or load the serialised data from a file after the sub has finished.
Update: IPC::Lite

However, I guess, that in this particular case, you're better off with threads and maybe a queue.

In reply to Re: Proc::Simple store return from background process by Perlbotics
in thread Proc::Simple store return from background process by perldarren

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