… | |
… | |
399 | =cut |
399 | =cut |
400 | |
400 | |
401 | sub rcv($@); |
401 | sub rcv($@); |
402 | |
402 | |
403 | my $KILME = sub { |
403 | my $KILME = sub { |
404 | die "received message on port without callback"; |
404 | (my $tag = substr $_[0], 0, 30) =~ s/([\x20-\x7e])/./g; |
|
|
405 | kil $SELF, unhandled_message => "no callback set for message (first element $tag)"; |
405 | }; |
406 | }; |
406 | |
407 | |
407 | sub port(;&) { |
408 | sub port(;&) { |
408 | my $id = $UNIQ . ++$ID; |
409 | my $id = $UNIQ . ++$ID; |
409 | my $port = "$NODE#$id"; |
410 | my $port = "$NODE#$id"; |
… | |
… | |
421 | |
422 | |
422 | The global C<$SELF> (exported by this module) contains C<$port> while |
423 | The global C<$SELF> (exported by this module) contains C<$port> while |
423 | executing the callback. Runtime errors during callback execution will |
424 | executing the callback. Runtime errors during callback execution will |
424 | result in the port being C<kil>ed. |
425 | result in the port being C<kil>ed. |
425 | |
426 | |
426 | The default callback received all messages not matched by a more specific |
427 | The default callback receives all messages not matched by a more specific |
427 | C<tag> match. |
428 | C<tag> match. |
428 | |
429 | |
429 | =item rcv $local_port, tag => $callback->(@msg_without_tag), ... |
430 | =item rcv $local_port, tag => $callback->(@msg_without_tag), ... |
430 | |
431 | |
431 | Register (or replace) callbacks to be called on messages starting with the |
432 | Register (or replace) callbacks to be called on messages starting with the |
… | |
… | |
732 | will be reported as reason C<< die => $@ >>. |
733 | will be reported as reason C<< die => $@ >>. |
733 | |
734 | |
734 | Transport/communication errors are reported as C<< transport_error => |
735 | Transport/communication errors are reported as C<< transport_error => |
735 | $message >>. |
736 | $message >>. |
736 | |
737 | |
737 | =cut |
738 | Common idioms: |
|
|
739 | |
|
|
740 | # silently remove yourself, do not kill linked ports |
|
|
741 | kil $SELF; |
|
|
742 | |
|
|
743 | # report a failure in some detail |
|
|
744 | kil $SELF, failure_mode_1 => "it failed with too high temperature"; |
|
|
745 | |
|
|
746 | # do not waste much time with killing, just die when something goes wrong |
|
|
747 | open my $fh, "<file" |
|
|
748 | or die "file: $!"; |
738 | |
749 | |
739 | =item $port = spawn $node, $initfunc[, @initdata] |
750 | =item $port = spawn $node, $initfunc[, @initdata] |
740 | |
751 | |
741 | Creates a port on the node C<$node> (which can also be a port ID, in which |
752 | Creates a port on the node C<$node> (which can also be a port ID, in which |
742 | case it's the node where that port resides). |
753 | case it's the node where that port resides). |