… | |
… | |
681 | "$noderef#$id" |
681 | "$noderef#$id" |
682 | } |
682 | } |
683 | |
683 | |
684 | =back |
684 | =back |
685 | |
685 | |
686 | =head1 NODE MESSAGES |
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687 | |
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688 | Nodes understand the following messages sent to them. Many of them take |
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689 | arguments called C<@reply>, which will simply be used to compose a reply |
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690 | message - C<$reply[0]> is the port to reply to, C<$reply[1]> the type and |
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691 | the remaining arguments are simply the message data. |
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692 | |
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693 | While other messages exist, they are not public and subject to change. |
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694 | |
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695 | =over 4 |
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696 | |
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697 | =cut |
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698 | |
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699 | =item lookup => $name, @reply |
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700 | |
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701 | Replies with the port ID of the specified well-known port, or C<undef>. |
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702 | |
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703 | =item devnull => ... |
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704 | |
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705 | Generic data sink/CPU heat conversion. |
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706 | |
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707 | =item relay => $port, @msg |
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708 | |
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709 | Simply forwards the message to the given port. |
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710 | |
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711 | =item eval => $string[ @reply] |
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712 | |
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713 | Evaluates the given string. If C<@reply> is given, then a message of the |
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714 | form C<@reply, $@, @evalres> is sent. |
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715 | |
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716 | Example: crash another node. |
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717 | |
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718 | snd $othernode, eval => "exit"; |
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|
719 | |
|
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720 | =item time => @reply |
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721 | |
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722 | Replies the the current node time to C<@reply>. |
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723 | |
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724 | Example: tell the current node to send the current time to C<$myport> in a |
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725 | C<timereply> message. |
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726 | |
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727 | snd $NODE, time => $myport, timereply => 1, 2; |
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728 | # => snd $myport, timereply => 1, 2, <time> |
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729 | |
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730 | =back |
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731 | |
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732 | =head1 AnyEvent::MP vs. Distributed Erlang |
686 | =head1 AnyEvent::MP vs. Distributed Erlang |
733 | |
687 | |
734 | AnyEvent::MP got lots of its ideas from distributed Erlang (Erlang node |
688 | AnyEvent::MP got lots of its ideas from distributed Erlang (Erlang node |
735 | == aemp node, Erlang process == aemp port), so many of the documents and |
689 | == aemp node, Erlang process == aemp port), so many of the documents and |
736 | programming techniques employed by Erlang apply to AnyEvent::MP. Here is a |
690 | programming techniques employed by Erlang apply to AnyEvent::MP. Here is a |