Thank you very much Rocco, the idea is clear.

However this assumes that we know which event is issued last - because that event must issue 'process_next_input'.

What if we don't know that - the number and order of events that get generated in the course of processing of a line is more or less random?

I changed your sample so that event step_two sometimes gets issued and sometimes doesn't. Also I added checking get_event_count() to see if there are any further events in the queue. Seems that achieved my goal:

sub do_step_one {
  print "  step one: $_[ARG0]\n";
  $_[KERNEL]->yield('step_two', $_[ARG0]) if rand(1) > 0.5;
  $_[KERNEL]->yield('process_next_input') if $poe_kernel->get_event_co
+unt() == 0;
}

sub do_step_two {
  print "  step two: $_[ARG0]\n";
  $_[KERNEL]->yield('process_next_input') if $poe_kernel->get_event_co
+unt() == 0;
}

[download]

Thanks once again for your time!

In reply to Re^2: POE::Wheel::ReadWrite: "low priority" events by vlad_s
in thread POE::Wheel::ReadWrite: "low priority" events by vlad_s

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