| 1 | =head1 NAME |
1 | =head1 NAME |
| 2 | |
2 | |
| 3 | AnyEvent::Fork::RPC - simple RPC extension for AnyEvent::Fork |
3 | AnyEvent::Fork::RPC - simple RPC extension for AnyEvent::Fork |
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4 | |
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5 | THE API IS NOT FINISHED, CONSIDER THIS A TECHNOLOGY DEMO |
| 4 | |
6 | |
| 5 | =head1 SYNOPSIS |
7 | =head1 SYNOPSIS |
| 6 | |
8 | |
| 7 | use AnyEvent::Fork::RPC; |
9 | use AnyEvent::Fork::RPC; |
| 8 | # use AnyEvent::Fork is not needed |
10 | # use AnyEvent::Fork is not needed |
| … | |
… | |
| 11 | ->new |
13 | ->new |
| 12 | ->require ("MyModule") |
14 | ->require ("MyModule") |
| 13 | ->AnyEvent::Fork::RPC::run ( |
15 | ->AnyEvent::Fork::RPC::run ( |
| 14 | "MyModule::server", |
16 | "MyModule::server", |
| 15 | ); |
17 | ); |
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18 | |
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19 | use AnyEvent; |
| 16 | |
20 | |
| 17 | my $cv = AE::cv; |
21 | my $cv = AE::cv; |
| 18 | |
22 | |
| 19 | $rpc->(1, 2, 3, sub { |
23 | $rpc->(1, 2, 3, sub { |
| 20 | print "MyModule::server returned @_\n"; |
24 | print "MyModule::server returned @_\n"; |
| … | |
… | |
| 372 | |
376 | |
| 373 | The default server used in the child does all I/O blockingly, and only |
377 | The default server used in the child does all I/O blockingly, and only |
| 374 | allows a single RPC call to execute concurrently. |
378 | allows a single RPC call to execute concurrently. |
| 375 | |
379 | |
| 376 | Setting C<async> to a true value switches to another implementation that |
380 | Setting C<async> to a true value switches to another implementation that |
| 377 | uses L<AnyEvent> in the child and allows multiple concurrent RPC calls. |
381 | uses L<AnyEvent> in the child and allows multiple concurrent RPC calls (it |
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382 | does not support recursion in the event loop however, blocking condvar |
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383 | calls will fail). |
| 378 | |
384 | |
| 379 | The actual API in the child is documented in the section that describes |
385 | The actual API in the child is documented in the section that describes |
| 380 | the calling semantics of the returned C<$rpc> function. |
386 | the calling semantics of the returned C<$rpc> function. |
| 381 | |
387 | |
| 382 | If you want to pre-load the actual back-end modules to enable memory |
388 | If you want to pre-load the actual back-end modules to enable memory |
| … | |
… | |
| 557 | $ww ||= AE::io $fh, 1, $wcb; |
563 | $ww ||= AE::io $fh, 1, $wcb; |
| 558 | }); |
564 | }); |
| 559 | |
565 | |
| 560 | my $guard = Guard::guard { |
566 | my $guard = Guard::guard { |
| 561 | $shutdown = 1; |
567 | $shutdown = 1; |
| 562 | $ww ||= $fh && AE::io $fh, 1, $wcb; |
568 | |
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569 | shutdown $fh, 1 if $fh && !$ww; |
| 563 | }; |
570 | }; |
| 564 | |
571 | |
| 565 | my $id; |
572 | my $id; |
| 566 | |
573 | |
| 567 | $arg{async} |
574 | $arg{async} |
| … | |
… | |
| 693 | are queued and the jobs are slow, they will all run concurrently. The |
700 | are queued and the jobs are slow, they will all run concurrently. The |
| 694 | child must implement some queueing/limiting mechanism if this causes |
701 | child must implement some queueing/limiting mechanism if this causes |
| 695 | problems. Alternatively, the parent could limit the amount of rpc calls |
702 | problems. Alternatively, the parent could limit the amount of rpc calls |
| 696 | that are outstanding. |
703 | that are outstanding. |
| 697 | |
704 | |
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705 | Blocking use of condvars is not supported. |
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706 | |
| 698 | Using event-based modules such as L<IO::AIO>, L<Gtk2>, L<Tk> and so on is |
707 | Using event-based modules such as L<IO::AIO>, L<Gtk2>, L<Tk> and so on is |
| 699 | easy. |
708 | easy. |
| 700 | |
709 | |
| 701 | =back |
710 | =back |
| 702 | |
711 | |
| … | |
… | |
| 765 | so you might want to look into L<AnyEvent::FDpasser> which can handle the |
774 | so you might want to look into L<AnyEvent::FDpasser> which can handle the |
| 766 | gory details. |
775 | gory details. |
| 767 | |
776 | |
| 768 | =head1 SEE ALSO |
777 | =head1 SEE ALSO |
| 769 | |
778 | |
| 770 | L<AnyEvent::Fork> (to create the processes in the first place), |
779 | L<AnyEvent::Fork>, to create the processes in the first place. |
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780 | |
| 771 | L<AnyEvent::Fork::Pool> (to manage whole pools of processes). |
781 | L<AnyEvent::Fork::Pool>, to manage whole pools of processes. |
| 772 | |
782 | |
| 773 | =head1 AUTHOR AND CONTACT INFORMATION |
783 | =head1 AUTHOR AND CONTACT INFORMATION |
| 774 | |
784 | |
| 775 | Marc Lehmann <schmorp@schmorp.de> |
785 | Marc Lehmann <schmorp@schmorp.de> |
| 776 | http://software.schmorp.de/pkg/AnyEvent-Fork-RPC |
786 | http://software.schmorp.de/pkg/AnyEvent-Fork-RPC |
