1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | AnyEvent - events independent of event loop implementation |
3 | AnyEvent - the DBI of event loop programming |
4 | |
4 | |
5 | EV, Event, Glib, Tk, Perl, Event::Lib, Qt and POE are various supported |
5 | EV, Event, Glib, Tk, Perl, Event::Lib, Irssi, rxvt-unicode, IO::Async, Qt |
6 | event loops. |
6 | and POE are various supported event loops/environments. |
7 | |
7 | |
8 | =head1 SYNOPSIS |
8 | =head1 SYNOPSIS |
9 | |
9 | |
10 | use AnyEvent; |
10 | use AnyEvent; |
11 | |
11 | |
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47 | |
47 | |
48 | There is a mailinglist for discussing all things AnyEvent, and an IRC |
48 | There is a mailinglist for discussing all things AnyEvent, and an IRC |
49 | channel, too. |
49 | channel, too. |
50 | |
50 | |
51 | See the AnyEvent project page at the B<Schmorpforge Ta-Sa Software |
51 | See the AnyEvent project page at the B<Schmorpforge Ta-Sa Software |
52 | Respository>, at L<http://anyevent.schmorp.de>, for more info. |
52 | Repository>, at L<http://anyevent.schmorp.de>, for more info. |
53 | |
53 | |
54 | =head1 WHY YOU SHOULD USE THIS MODULE (OR NOT) |
54 | =head1 WHY YOU SHOULD USE THIS MODULE (OR NOT) |
55 | |
55 | |
56 | Glib, POE, IO::Async, Event... CPAN offers event models by the dozen |
56 | Glib, POE, IO::Async, Event... CPAN offers event models by the dozen |
57 | nowadays. So what is different about AnyEvent? |
57 | nowadays. So what is different about AnyEvent? |
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181 | my variables are only visible after the statement in which they are |
181 | my variables are only visible after the statement in which they are |
182 | declared. |
182 | declared. |
183 | |
183 | |
184 | =head2 I/O WATCHERS |
184 | =head2 I/O WATCHERS |
185 | |
185 | |
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186 | $w = AnyEvent->io ( |
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187 | fh => <filehandle_or_fileno>, |
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188 | poll => <"r" or "w">, |
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189 | cb => <callback>, |
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190 | ); |
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191 | |
186 | You can create an I/O watcher by calling the C<< AnyEvent->io >> method |
192 | You can create an I/O watcher by calling the C<< AnyEvent->io >> method |
187 | with the following mandatory key-value pairs as arguments: |
193 | with the following mandatory key-value pairs as arguments: |
188 | |
194 | |
189 | C<fh> is the Perl I<file handle> (or a naked file descriptor) to watch |
195 | C<fh> is the Perl I<file handle> (or a naked file descriptor) to watch |
190 | for events (AnyEvent might or might not keep a reference to this file |
196 | for events (AnyEvent might or might not keep a reference to this file |
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219 | undef $w; |
225 | undef $w; |
220 | }); |
226 | }); |
221 | |
227 | |
222 | =head2 TIME WATCHERS |
228 | =head2 TIME WATCHERS |
223 | |
229 | |
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230 | $w = AnyEvent->timer (after => <seconds>, cb => <callback>); |
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231 | |
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232 | $w = AnyEvent->timer ( |
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233 | after => <fractional_seconds>, |
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234 | interval => <fractional_seconds>, |
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235 | cb => <callback>, |
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236 | ); |
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237 | |
224 | You can create a time watcher by calling the C<< AnyEvent->timer >> |
238 | You can create a time watcher by calling the C<< AnyEvent->timer >> |
225 | method with the following mandatory arguments: |
239 | method with the following mandatory arguments: |
226 | |
240 | |
227 | C<after> specifies after how many seconds (fractional values are |
241 | C<after> specifies after how many seconds (fractional values are |
228 | supported) the callback should be invoked. C<cb> is the callback to invoke |
242 | supported) the callback should be invoked. C<cb> is the callback to invoke |
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349 | might affect timers and time-outs. |
363 | might affect timers and time-outs. |
350 | |
364 | |
351 | When this is the case, you can call this method, which will update the |
365 | When this is the case, you can call this method, which will update the |
352 | event loop's idea of "current time". |
366 | event loop's idea of "current time". |
353 | |
367 | |
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368 | A typical example would be a script in a web server (e.g. C<mod_perl>) - |
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369 | when mod_perl executes the script, then the event loop will have the wrong |
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370 | idea about the "current time" (being potentially far in the past, when the |
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371 | script ran the last time). In that case you should arrange a call to C<< |
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372 | AnyEvent->now_update >> each time the web server process wakes up again |
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373 | (e.g. at the start of your script, or in a handler). |
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374 | |
354 | Note that updating the time I<might> cause some events to be handled. |
375 | Note that updating the time I<might> cause some events to be handled. |
355 | |
376 | |
356 | =back |
377 | =back |
357 | |
378 | |
358 | =head2 SIGNAL WATCHERS |
379 | =head2 SIGNAL WATCHERS |
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380 | |
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381 | $w = AnyEvent->signal (signal => <uppercase_signal_name>, cb => <callback>); |
359 | |
382 | |
360 | You can watch for signals using a signal watcher, C<signal> is the signal |
383 | You can watch for signals using a signal watcher, C<signal> is the signal |
361 | I<name> in uppercase and without any C<SIG> prefix, C<cb> is the Perl |
384 | I<name> in uppercase and without any C<SIG> prefix, C<cb> is the Perl |
362 | callback to be invoked whenever a signal occurs. |
385 | callback to be invoked whenever a signal occurs. |
363 | |
386 | |
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380 | |
403 | |
381 | Example: exit on SIGINT |
404 | Example: exit on SIGINT |
382 | |
405 | |
383 | my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 }); |
406 | my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 }); |
384 | |
407 | |
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408 | =head3 Restart Behaviour |
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409 | |
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410 | While restart behaviour is up to the event loop implementation, most will |
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411 | not restart syscalls (that includes L<Async::Interrupt> and AnyEvent's |
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412 | pure perl implementation). |
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413 | |
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414 | =head3 Safe/Unsafe Signals |
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415 | |
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416 | Perl signals can be either "safe" (synchronous to opcode handling) or |
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417 | "unsafe" (asynchronous) - the former might get delayed indefinitely, the |
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418 | latter might corrupt your memory. |
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419 | |
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420 | AnyEvent signal handlers are, in addition, synchronous to the event loop, |
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421 | i.e. they will not interrupt your running perl program but will only be |
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422 | called as part of the normal event handling (just like timer, I/O etc. |
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423 | callbacks, too). |
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424 | |
385 | =head3 Signal Races, Delays and Workarounds |
425 | =head3 Signal Races, Delays and Workarounds |
386 | |
426 | |
387 | Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching |
427 | Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching |
388 | callbacks to signals in a generic way, which is a pity, as you cannot do |
428 | callbacks to signals in a generic way, which is a pity, as you cannot |
389 | race-free signal handling in perl. AnyEvent will try to do it's best, but |
429 | do race-free signal handling in perl, requiring C libraries for |
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430 | this. AnyEvent will try to do it's best, which means in some cases, |
390 | in some cases, signals will be delayed. The maximum time a signal might |
431 | signals will be delayed. The maximum time a signal might be delayed is |
391 | be delayed is specified in C<$AnyEvent::MAX_SIGNAL_LATENCY> (default: 10 |
432 | specified in C<$AnyEvent::MAX_SIGNAL_LATENCY> (default: 10 seconds). This |
392 | seconds). This variable can be changed only before the first signal |
433 | variable can be changed only before the first signal watcher is created, |
393 | watcher is created, and should be left alone otherwise. Higher values |
434 | and should be left alone otherwise. This variable determines how often |
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435 | AnyEvent polls for signals (in case a wake-up was missed). Higher values |
394 | will cause fewer spurious wake-ups, which is better for power and CPU |
436 | will cause fewer spurious wake-ups, which is better for power and CPU |
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437 | saving. |
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438 | |
395 | saving. All these problems can be avoided by installing the optional |
439 | All these problems can be avoided by installing the optional |
396 | L<Async::Interrupt> module. This will not work with inherently broken |
440 | L<Async::Interrupt> module, which works with most event loops. It will not |
397 | event loops such as L<Event> or L<Event::Lib> (and not with L<POE> |
441 | work with inherently broken event loops such as L<Event> or L<Event::Lib> |
398 | currently, as POE does it's own workaround with one-second latency). With |
442 | (and not with L<POE> currently, as POE does it's own workaround with |
399 | those, you just have to suffer the delays. |
443 | one-second latency). For those, you just have to suffer the delays. |
400 | |
444 | |
401 | =head2 CHILD PROCESS WATCHERS |
445 | =head2 CHILD PROCESS WATCHERS |
402 | |
446 | |
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447 | $w = AnyEvent->child (pid => <process id>, cb => <callback>); |
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448 | |
403 | You can also watch on a child process exit and catch its exit status. |
449 | You can also watch on a child process exit and catch its exit status. |
404 | |
450 | |
405 | The child process is specified by the C<pid> argument (if set to C<0>, it |
451 | The child process is specified by the C<pid> argument (one some backends, |
406 | watches for any child process exit). The watcher will triggered only when |
452 | using C<0> watches for any child process exit, on others this will |
407 | the child process has finished and an exit status is available, not on |
453 | croak). The watcher will be triggered only when the child process has |
408 | any trace events (stopped/continued). |
454 | finished and an exit status is available, not on any trace events |
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455 | (stopped/continued). |
409 | |
456 | |
410 | The callback will be called with the pid and exit status (as returned by |
457 | The callback will be called with the pid and exit status (as returned by |
411 | waitpid), so unlike other watcher types, you I<can> rely on child watcher |
458 | waitpid), so unlike other watcher types, you I<can> rely on child watcher |
412 | callback arguments. |
459 | callback arguments. |
413 | |
460 | |
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454 | # do something else, then wait for process exit |
501 | # do something else, then wait for process exit |
455 | $done->recv; |
502 | $done->recv; |
456 | |
503 | |
457 | =head2 IDLE WATCHERS |
504 | =head2 IDLE WATCHERS |
458 | |
505 | |
459 | Sometimes there is a need to do something, but it is not so important |
506 | $w = AnyEvent->idle (cb => <callback>); |
460 | to do it instantly, but only when there is nothing better to do. This |
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461 | "nothing better to do" is usually defined to be "no other events need |
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462 | attention by the event loop". |
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463 | |
507 | |
464 | Idle watchers ideally get invoked when the event loop has nothing |
508 | Repeatedly invoke the callback after the process becomes idle, until |
465 | better to do, just before it would block the process to wait for new |
509 | either the watcher is destroyed or new events have been detected. |
466 | events. Instead of blocking, the idle watcher is invoked. |
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467 | |
510 | |
468 | Most event loops unfortunately do not really support idle watchers (only |
511 | Idle watchers are useful when there is a need to do something, but it |
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512 | is not so important (or wise) to do it instantly. The callback will be |
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513 | invoked only when there is "nothing better to do", which is usually |
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514 | defined as "all outstanding events have been handled and no new events |
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515 | have been detected". That means that idle watchers ideally get invoked |
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516 | when the event loop has just polled for new events but none have been |
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517 | detected. Instead of blocking to wait for more events, the idle watchers |
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518 | will be invoked. |
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519 | |
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520 | Unfortunately, most event loops do not really support idle watchers (only |
469 | EV, Event and Glib do it in a usable fashion) - for the rest, AnyEvent |
521 | EV, Event and Glib do it in a usable fashion) - for the rest, AnyEvent |
470 | will simply call the callback "from time to time". |
522 | will simply call the callback "from time to time". |
471 | |
523 | |
472 | Example: read lines from STDIN, but only process them when the |
524 | Example: read lines from STDIN, but only process them when the |
473 | program is otherwise idle: |
525 | program is otherwise idle: |
… | |
… | |
489 | }); |
541 | }); |
490 | }); |
542 | }); |
491 | |
543 | |
492 | =head2 CONDITION VARIABLES |
544 | =head2 CONDITION VARIABLES |
493 | |
545 | |
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546 | $cv = AnyEvent->condvar; |
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547 | |
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548 | $cv->send (<list>); |
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549 | my @res = $cv->recv; |
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550 | |
494 | If you are familiar with some event loops you will know that all of them |
551 | If you are familiar with some event loops you will know that all of them |
495 | require you to run some blocking "loop", "run" or similar function that |
552 | require you to run some blocking "loop", "run" or similar function that |
496 | will actively watch for new events and call your callbacks. |
553 | will actively watch for new events and call your callbacks. |
497 | |
554 | |
498 | AnyEvent is slightly different: it expects somebody else to run the event |
555 | AnyEvent is slightly different: it expects somebody else to run the event |
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562 | after => 1, |
619 | after => 1, |
563 | cb => sub { $result_ready->send }, |
620 | cb => sub { $result_ready->send }, |
564 | ); |
621 | ); |
565 | |
622 | |
566 | # this "blocks" (while handling events) till the callback |
623 | # this "blocks" (while handling events) till the callback |
567 | # calls -<send |
624 | # calls ->send |
568 | $result_ready->recv; |
625 | $result_ready->recv; |
569 | |
626 | |
570 | Example: wait for a timer, but take advantage of the fact that condition |
627 | Example: wait for a timer, but take advantage of the fact that condition |
571 | variables are also callable directly. |
628 | variables are also callable directly. |
572 | |
629 | |
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636 | one. For example, a function that pings many hosts in parallel might want |
693 | one. For example, a function that pings many hosts in parallel might want |
637 | to use a condition variable for the whole process. |
694 | to use a condition variable for the whole process. |
638 | |
695 | |
639 | Every call to C<< ->begin >> will increment a counter, and every call to |
696 | Every call to C<< ->begin >> will increment a counter, and every call to |
640 | C<< ->end >> will decrement it. If the counter reaches C<0> in C<< ->end |
697 | C<< ->end >> will decrement it. If the counter reaches C<0> in C<< ->end |
641 | >>, the (last) callback passed to C<begin> will be executed. That callback |
698 | >>, the (last) callback passed to C<begin> will be executed, passing the |
642 | is I<supposed> to call C<< ->send >>, but that is not required. If no |
699 | condvar as first argument. That callback is I<supposed> to call C<< ->send |
643 | callback was set, C<send> will be called without any arguments. |
700 | >>, but that is not required. If no group callback was set, C<send> will |
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701 | be called without any arguments. |
644 | |
702 | |
645 | You can think of C<< $cv->send >> giving you an OR condition (one call |
703 | You can think of C<< $cv->send >> giving you an OR condition (one call |
646 | sends), while C<< $cv->begin >> and C<< $cv->end >> giving you an AND |
704 | sends), while C<< $cv->begin >> and C<< $cv->end >> giving you an AND |
647 | condition (all C<begin> calls must be C<end>'ed before the condvar sends). |
705 | condition (all C<begin> calls must be C<end>'ed before the condvar sends). |
648 | |
706 | |
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675 | begung can potentially be zero: |
733 | begung can potentially be zero: |
676 | |
734 | |
677 | my $cv = AnyEvent->condvar; |
735 | my $cv = AnyEvent->condvar; |
678 | |
736 | |
679 | my %result; |
737 | my %result; |
680 | $cv->begin (sub { $cv->send (\%result) }); |
738 | $cv->begin (sub { shift->send (\%result) }); |
681 | |
739 | |
682 | for my $host (@list_of_hosts) { |
740 | for my $host (@list_of_hosts) { |
683 | $cv->begin; |
741 | $cv->begin; |
684 | ping_host_then_call_callback $host, sub { |
742 | ping_host_then_call_callback $host, sub { |
685 | $result{$host} = ...; |
743 | $result{$host} = ...; |
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760 | =item $cb = $cv->cb ($cb->($cv)) |
818 | =item $cb = $cv->cb ($cb->($cv)) |
761 | |
819 | |
762 | This is a mutator function that returns the callback set and optionally |
820 | This is a mutator function that returns the callback set and optionally |
763 | replaces it before doing so. |
821 | replaces it before doing so. |
764 | |
822 | |
765 | The callback will be called when the condition becomes "true", i.e. when |
823 | The callback will be called when the condition becomes (or already was) |
766 | C<send> or C<croak> are called, with the only argument being the condition |
824 | "true", i.e. when C<send> or C<croak> are called (or were called), with |
767 | variable itself. Calling C<recv> inside the callback or at any later time |
825 | the only argument being the condition variable itself. Calling C<recv> |
768 | is guaranteed not to block. |
826 | inside the callback or at any later time is guaranteed not to block. |
769 | |
827 | |
770 | =back |
828 | =back |
771 | |
829 | |
772 | =head1 SUPPORTED EVENT LOOPS/BACKENDS |
830 | =head1 SUPPORTED EVENT LOOPS/BACKENDS |
773 | |
831 | |
… | |
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776 | =over 4 |
834 | =over 4 |
777 | |
835 | |
778 | =item Backends that are autoprobed when no other event loop can be found. |
836 | =item Backends that are autoprobed when no other event loop can be found. |
779 | |
837 | |
780 | EV is the preferred backend when no other event loop seems to be in |
838 | EV is the preferred backend when no other event loop seems to be in |
781 | use. If EV is not installed, then AnyEvent will try Event, and, failing |
839 | use. If EV is not installed, then AnyEvent will fall back to its own |
782 | that, will fall back to its own pure-perl implementation, which is |
840 | pure-perl implementation, which is available everywhere as it comes with |
783 | available everywhere as it comes with AnyEvent itself. |
841 | AnyEvent itself. |
784 | |
842 | |
785 | AnyEvent::Impl::EV based on EV (interface to libev, best choice). |
843 | AnyEvent::Impl::EV based on EV (interface to libev, best choice). |
786 | AnyEvent::Impl::Event based on Event, very stable, few glitches. |
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787 | AnyEvent::Impl::Perl pure-perl implementation, fast and portable. |
844 | AnyEvent::Impl::Perl pure-perl implementation, fast and portable. |
788 | |
845 | |
789 | =item Backends that are transparently being picked up when they are used. |
846 | =item Backends that are transparently being picked up when they are used. |
790 | |
847 | |
791 | These will be used when they are currently loaded when the first watcher |
848 | These will be used when they are currently loaded when the first watcher |
792 | is created, in which case it is assumed that the application is using |
849 | is created, in which case it is assumed that the application is using |
793 | them. This means that AnyEvent will automatically pick the right backend |
850 | them. This means that AnyEvent will automatically pick the right backend |
794 | when the main program loads an event module before anything starts to |
851 | when the main program loads an event module before anything starts to |
795 | create watchers. Nothing special needs to be done by the main program. |
852 | create watchers. Nothing special needs to be done by the main program. |
796 | |
853 | |
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854 | AnyEvent::Impl::Event based on Event, very stable, few glitches. |
797 | AnyEvent::Impl::Glib based on Glib, slow but very stable. |
855 | AnyEvent::Impl::Glib based on Glib, slow but very stable. |
798 | AnyEvent::Impl::Tk based on Tk, very broken. |
856 | AnyEvent::Impl::Tk based on Tk, very broken. |
799 | AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse. |
857 | AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse. |
800 | AnyEvent::Impl::POE based on POE, very slow, some limitations. |
858 | AnyEvent::Impl::POE based on POE, very slow, some limitations. |
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859 | AnyEvent::Impl::Irssi used when running within irssi. |
801 | |
860 | |
802 | =item Backends with special needs. |
861 | =item Backends with special needs. |
803 | |
862 | |
804 | Qt requires the Qt::Application to be instantiated first, but will |
863 | Qt requires the Qt::Application to be instantiated first, but will |
805 | otherwise be picked up automatically. As long as the main program |
864 | otherwise be picked up automatically. As long as the main program |
… | |
… | |
879 | event module detection too early, for example, L<AnyEvent::AIO> creates |
938 | event module detection too early, for example, L<AnyEvent::AIO> creates |
880 | and installs the global L<IO::AIO> watcher in a C<post_detect> block to |
939 | and installs the global L<IO::AIO> watcher in a C<post_detect> block to |
881 | avoid autodetecting the event module at load time. |
940 | avoid autodetecting the event module at load time. |
882 | |
941 | |
883 | If called in scalar or list context, then it creates and returns an object |
942 | If called in scalar or list context, then it creates and returns an object |
884 | that automatically removes the callback again when it is destroyed. See |
943 | that automatically removes the callback again when it is destroyed (or |
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944 | C<undef> when the hook was immediately executed). See L<AnyEvent::AIO> for |
885 | L<Coro::BDB> for a case where this is useful. |
945 | a case where this is useful. |
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946 | |
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947 | Example: Create a watcher for the IO::AIO module and store it in |
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948 | C<$WATCHER>. Only do so after the event loop is initialised, though. |
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949 | |
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950 | our WATCHER; |
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951 | |
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952 | my $guard = AnyEvent::post_detect { |
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953 | $WATCHER = AnyEvent->io (fh => IO::AIO::poll_fileno, poll => 'r', cb => \&IO::AIO::poll_cb); |
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954 | }; |
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955 | |
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956 | # the ||= is important in case post_detect immediately runs the block, |
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957 | # as to not clobber the newly-created watcher. assigning both watcher and |
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958 | # post_detect guard to the same variable has the advantage of users being |
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959 | # able to just C<undef $WATCHER> if the watcher causes them grief. |
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960 | |
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961 | $WATCHER ||= $guard; |
886 | |
962 | |
887 | =item @AnyEvent::post_detect |
963 | =item @AnyEvent::post_detect |
888 | |
964 | |
889 | If there are any code references in this array (you can C<push> to it |
965 | If there are any code references in this array (you can C<push> to it |
890 | before or after loading AnyEvent), then they will called directly after |
966 | before or after loading AnyEvent), then they will called directly after |
… | |
… | |
893 | You should check C<$AnyEvent::MODEL> before adding to this array, though: |
969 | You should check C<$AnyEvent::MODEL> before adding to this array, though: |
894 | if it is defined then the event loop has already been detected, and the |
970 | if it is defined then the event loop has already been detected, and the |
895 | array will be ignored. |
971 | array will be ignored. |
896 | |
972 | |
897 | Best use C<AnyEvent::post_detect { BLOCK }> when your application allows |
973 | Best use C<AnyEvent::post_detect { BLOCK }> when your application allows |
898 | it,as it takes care of these details. |
974 | it, as it takes care of these details. |
899 | |
975 | |
900 | This variable is mainly useful for modules that can do something useful |
976 | This variable is mainly useful for modules that can do something useful |
901 | when AnyEvent is used and thus want to know when it is initialised, but do |
977 | when AnyEvent is used and thus want to know when it is initialised, but do |
902 | not need to even load it by default. This array provides the means to hook |
978 | not need to even load it by default. This array provides the means to hook |
903 | into AnyEvent passively, without loading it. |
979 | into AnyEvent passively, without loading it. |
|
|
980 | |
|
|
981 | Example: To load Coro::AnyEvent whenever Coro and AnyEvent are used |
|
|
982 | together, you could put this into Coro (this is the actual code used by |
|
|
983 | Coro to accomplish this): |
|
|
984 | |
|
|
985 | if (defined $AnyEvent::MODEL) { |
|
|
986 | # AnyEvent already initialised, so load Coro::AnyEvent |
|
|
987 | require Coro::AnyEvent; |
|
|
988 | } else { |
|
|
989 | # AnyEvent not yet initialised, so make sure to load Coro::AnyEvent |
|
|
990 | # as soon as it is |
|
|
991 | push @AnyEvent::post_detect, sub { require Coro::AnyEvent }; |
|
|
992 | } |
904 | |
993 | |
905 | =back |
994 | =back |
906 | |
995 | |
907 | =head1 WHAT TO DO IN A MODULE |
996 | =head1 WHAT TO DO IN A MODULE |
908 | |
997 | |
… | |
… | |
1057 | |
1146 | |
1058 | package AnyEvent; |
1147 | package AnyEvent; |
1059 | |
1148 | |
1060 | # basically a tuned-down version of common::sense |
1149 | # basically a tuned-down version of common::sense |
1061 | sub common_sense { |
1150 | sub common_sense { |
1062 | # no warnings |
1151 | # from common:.sense 1.0 |
1063 | ${^WARNING_BITS} ^= ${^WARNING_BITS}; |
1152 | ${^WARNING_BITS} = "\xfc\x3f\x33\x00\x0f\xf3\xcf\xc0\xf3\xfc\x33\x00"; |
1064 | # use strict vars subs |
1153 | # use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl) |
1065 | $^H |= 0x00000600; |
1154 | $^H |= 0x00000600; |
1066 | } |
1155 | } |
1067 | |
1156 | |
1068 | BEGIN { AnyEvent::common_sense } |
1157 | BEGIN { AnyEvent::common_sense } |
1069 | |
1158 | |
1070 | use Carp (); |
1159 | use Carp (); |
1071 | |
1160 | |
1072 | our $VERSION = 4.86; |
1161 | our $VERSION = '5.23'; |
1073 | our $MODEL; |
1162 | our $MODEL; |
1074 | |
1163 | |
1075 | our $AUTOLOAD; |
1164 | our $AUTOLOAD; |
1076 | our @ISA; |
1165 | our @ISA; |
1077 | |
1166 | |
1078 | our @REGISTRY; |
1167 | our @REGISTRY; |
1079 | |
|
|
1080 | our $WIN32; |
|
|
1081 | |
1168 | |
1082 | our $VERBOSE; |
1169 | our $VERBOSE; |
1083 | |
1170 | |
1084 | BEGIN { |
1171 | BEGIN { |
1085 | eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }"; |
1172 | eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }"; |
… | |
… | |
1102 | for reverse split /\s*,\s*/, |
1189 | for reverse split /\s*,\s*/, |
1103 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1190 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1104 | } |
1191 | } |
1105 | |
1192 | |
1106 | my @models = ( |
1193 | my @models = ( |
1107 | [EV:: => AnyEvent::Impl::EV::], |
1194 | [EV:: => AnyEvent::Impl::EV:: , 1], |
1108 | [Event:: => AnyEvent::Impl::Event::], |
|
|
1109 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl::], |
1195 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1], |
1110 | # everything below here will not be autoprobed |
1196 | # everything below here will not (normally) be autoprobed |
1111 | # as the pureperl backend should work everywhere |
1197 | # as the pureperl backend should work everywhere |
1112 | # and is usually faster |
1198 | # and is usually faster |
|
|
1199 | [Event:: => AnyEvent::Impl::Event::, 1], |
1113 | [Glib:: => AnyEvent::Impl::Glib::], # becomes extremely slow with many watchers |
1200 | [Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers |
1114 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1201 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
|
|
1202 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package |
1115 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1203 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1116 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1204 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1117 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1205 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1118 | [Wx:: => AnyEvent::Impl::POE::], |
1206 | [Wx:: => AnyEvent::Impl::POE::], |
1119 | [Prima:: => AnyEvent::Impl::POE::], |
1207 | [Prima:: => AnyEvent::Impl::POE::], |
1120 | # IO::Async is just too broken - we would need workarounds for its |
1208 | # IO::Async is just too broken - we would need workarounds for its |
1121 | # byzantine signal and broken child handling, among others. |
1209 | # byzantine signal and broken child handling, among others. |
1122 | # IO::Async is rather hard to detect, as it doesn't have any |
1210 | # IO::Async is rather hard to detect, as it doesn't have any |
1123 | # obvious default class. |
1211 | # obvious default class. |
1124 | # [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1212 | [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1125 | # [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1213 | [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1126 | # [IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1214 | [IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program |
|
|
1215 | [AnyEvent::Impl::IOAsync:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1127 | ); |
1216 | ); |
1128 | |
1217 | |
1129 | our %method = map +($_ => 1), |
1218 | our %method = map +($_ => 1), |
1130 | qw(io timer time now now_update signal child idle condvar one_event DESTROY); |
1219 | qw(io timer time now now_update signal child idle condvar one_event DESTROY); |
1131 | |
1220 | |
… | |
… | |
1135 | my ($cb) = @_; |
1224 | my ($cb) = @_; |
1136 | |
1225 | |
1137 | if ($MODEL) { |
1226 | if ($MODEL) { |
1138 | $cb->(); |
1227 | $cb->(); |
1139 | |
1228 | |
1140 | 1 |
1229 | undef |
1141 | } else { |
1230 | } else { |
1142 | push @post_detect, $cb; |
1231 | push @post_detect, $cb; |
1143 | |
1232 | |
1144 | defined wantarray |
1233 | defined wantarray |
1145 | ? bless \$cb, "AnyEvent::Util::postdetect" |
1234 | ? bless \$cb, "AnyEvent::Util::postdetect" |
… | |
… | |
1177 | } |
1266 | } |
1178 | } |
1267 | } |
1179 | } |
1268 | } |
1180 | |
1269 | |
1181 | unless ($MODEL) { |
1270 | unless ($MODEL) { |
1182 | # try to load a model |
1271 | # try to autoload a model |
1183 | |
|
|
1184 | for (@REGISTRY, @models) { |
1272 | for (@REGISTRY, @models) { |
1185 | my ($package, $model) = @$_; |
1273 | my ($package, $model, $autoload) = @$_; |
|
|
1274 | if ( |
|
|
1275 | $autoload |
1186 | if (eval "require $package" |
1276 | and eval "require $package" |
1187 | and ${"$package\::VERSION"} > 0 |
1277 | and ${"$package\::VERSION"} > 0 |
1188 | and eval "require $model") { |
1278 | and eval "require $model" |
|
|
1279 | ) { |
1189 | $MODEL = $model; |
1280 | $MODEL = $model; |
1190 | warn "AnyEvent: autoprobed model '$model', using it.\n" if $VERBOSE >= 2; |
1281 | warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2; |
1191 | last; |
1282 | last; |
1192 | } |
1283 | } |
1193 | } |
1284 | } |
1194 | |
1285 | |
1195 | $MODEL |
1286 | $MODEL |
… | |
… | |
1236 | # we assume CLOEXEC is already set by perl in all important cases |
1327 | # we assume CLOEXEC is already set by perl in all important cases |
1237 | |
1328 | |
1238 | ($fh2, $rw) |
1329 | ($fh2, $rw) |
1239 | } |
1330 | } |
1240 | |
1331 | |
|
|
1332 | =head1 SIMPLIFIED AE API |
|
|
1333 | |
|
|
1334 | Starting with version 5.0, AnyEvent officially supports a second, much |
|
|
1335 | simpler, API that is designed to reduce the calling, typing and memory |
|
|
1336 | overhead. |
|
|
1337 | |
|
|
1338 | See the L<AE> manpage for details. |
|
|
1339 | |
|
|
1340 | =cut |
|
|
1341 | |
|
|
1342 | package AE; |
|
|
1343 | |
|
|
1344 | our $VERSION = $AnyEvent::VERSION; |
|
|
1345 | |
|
|
1346 | sub io($$$) { |
|
|
1347 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
|
|
1348 | } |
|
|
1349 | |
|
|
1350 | sub timer($$$) { |
|
|
1351 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) |
|
|
1352 | } |
|
|
1353 | |
|
|
1354 | sub signal($$) { |
|
|
1355 | AnyEvent->signal (signal => $_[0], cb => $_[1]) |
|
|
1356 | } |
|
|
1357 | |
|
|
1358 | sub child($$) { |
|
|
1359 | AnyEvent->child (pid => $_[0], cb => $_[1]) |
|
|
1360 | } |
|
|
1361 | |
|
|
1362 | sub idle($) { |
|
|
1363 | AnyEvent->idle (cb => $_[0]) |
|
|
1364 | } |
|
|
1365 | |
|
|
1366 | sub cv(;&) { |
|
|
1367 | AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) |
|
|
1368 | } |
|
|
1369 | |
|
|
1370 | sub now() { |
|
|
1371 | AnyEvent->now |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | sub now_update() { |
|
|
1375 | AnyEvent->now_update |
|
|
1376 | } |
|
|
1377 | |
|
|
1378 | sub time() { |
|
|
1379 | AnyEvent->time |
|
|
1380 | } |
|
|
1381 | |
1241 | package AnyEvent::Base; |
1382 | package AnyEvent::Base; |
1242 | |
1383 | |
1243 | # default implementations for many methods |
1384 | # default implementations for many methods |
1244 | |
1385 | |
1245 | sub _time { |
1386 | sub _time() { |
1246 | # probe for availability of Time::HiRes |
1387 | # probe for availability of Time::HiRes |
1247 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1388 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1248 | warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; |
1389 | warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; |
1249 | *_time = \&Time::HiRes::time; |
1390 | *_time = \&Time::HiRes::time; |
1250 | # if (eval "use POSIX (); (POSIX::times())... |
1391 | # if (eval "use POSIX (); (POSIX::times())... |
… | |
… | |
1267 | } |
1408 | } |
1268 | |
1409 | |
1269 | # default implementation for ->signal |
1410 | # default implementation for ->signal |
1270 | |
1411 | |
1271 | our $HAVE_ASYNC_INTERRUPT; |
1412 | our $HAVE_ASYNC_INTERRUPT; |
|
|
1413 | |
|
|
1414 | sub _have_async_interrupt() { |
|
|
1415 | $HAVE_ASYNC_INTERRUPT = 1*(!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} |
|
|
1416 | && eval "use Async::Interrupt 1.02 (); 1") |
|
|
1417 | unless defined $HAVE_ASYNC_INTERRUPT; |
|
|
1418 | |
|
|
1419 | $HAVE_ASYNC_INTERRUPT |
|
|
1420 | } |
|
|
1421 | |
1272 | our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO); |
1422 | our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO); |
1273 | our (%SIG_ASY, %SIG_ASY_W); |
1423 | our (%SIG_ASY, %SIG_ASY_W); |
1274 | our ($SIG_COUNT, $SIG_TW); |
1424 | our ($SIG_COUNT, $SIG_TW); |
1275 | |
1425 | |
1276 | sub _signal_exec { |
1426 | sub _signal_exec { |
1277 | $HAVE_ASYNC_INTERRUPT |
1427 | $HAVE_ASYNC_INTERRUPT |
1278 | ? $SIGPIPE_R->drain |
1428 | ? $SIGPIPE_R->drain |
1279 | : sysread $SIGPIPE_R, my $dummy, 9; |
1429 | : sysread $SIGPIPE_R, (my $dummy), 9; |
1280 | |
1430 | |
1281 | while (%SIG_EV) { |
1431 | while (%SIG_EV) { |
1282 | for (keys %SIG_EV) { |
1432 | for (keys %SIG_EV) { |
1283 | delete $SIG_EV{$_}; |
1433 | delete $SIG_EV{$_}; |
1284 | $_->() for values %{ $SIG_CB{$_} || {} }; |
1434 | $_->() for values %{ $SIG_CB{$_} || {} }; |
1285 | } |
1435 | } |
1286 | } |
1436 | } |
1287 | } |
1437 | } |
1288 | |
1438 | |
1289 | # install a dumym wakeupw atcher to reduce signal catching latency |
1439 | # install a dummy wakeup watcher to reduce signal catching latency |
1290 | sub _sig_add() { |
1440 | sub _sig_add() { |
1291 | unless ($SIG_COUNT++) { |
1441 | unless ($SIG_COUNT++) { |
1292 | # try to align timer on a full-second boundary, if possible |
1442 | # try to align timer on a full-second boundary, if possible |
1293 | my $NOW = AnyEvent->now; |
1443 | my $NOW = AE::now; |
1294 | |
1444 | |
1295 | $SIG_TW = AnyEvent->timer ( |
1445 | $SIG_TW = AE::timer |
1296 | after => $MAX_SIGNAL_LATENCY - ($NOW - int $NOW), |
1446 | $MAX_SIGNAL_LATENCY - ($NOW - int $NOW), |
1297 | interval => $MAX_SIGNAL_LATENCY, |
1447 | $MAX_SIGNAL_LATENCY, |
1298 | cb => sub { }, # just for the PERL_ASYNC_CHECK |
1448 | sub { } # just for the PERL_ASYNC_CHECK |
1299 | ); |
1449 | ; |
1300 | } |
1450 | } |
1301 | } |
1451 | } |
1302 | |
1452 | |
1303 | sub _sig_del { |
1453 | sub _sig_del { |
1304 | undef $SIG_TW |
1454 | undef $SIG_TW |
1305 | unless --$SIG_COUNT; |
1455 | unless --$SIG_COUNT; |
1306 | } |
1456 | } |
1307 | |
1457 | |
|
|
1458 | our $_sig_name_init; $_sig_name_init = sub { |
|
|
1459 | eval q{ # poor man's autoloading |
|
|
1460 | undef $_sig_name_init; |
|
|
1461 | |
|
|
1462 | if (_have_async_interrupt) { |
|
|
1463 | *sig2num = \&Async::Interrupt::sig2num; |
|
|
1464 | *sig2name = \&Async::Interrupt::sig2name; |
|
|
1465 | } else { |
|
|
1466 | require Config; |
|
|
1467 | |
|
|
1468 | my %signame2num; |
|
|
1469 | @signame2num{ split ' ', $Config::Config{sig_name} } |
|
|
1470 | = split ' ', $Config::Config{sig_num}; |
|
|
1471 | |
|
|
1472 | my @signum2name; |
|
|
1473 | @signum2name[values %signame2num] = keys %signame2num; |
|
|
1474 | |
|
|
1475 | *sig2num = sub($) { |
|
|
1476 | $_[0] > 0 ? shift : $signame2num{+shift} |
|
|
1477 | }; |
|
|
1478 | *sig2name = sub ($) { |
|
|
1479 | $_[0] > 0 ? $signum2name[+shift] : shift |
|
|
1480 | }; |
|
|
1481 | } |
|
|
1482 | }; |
|
|
1483 | die if $@; |
|
|
1484 | }; |
|
|
1485 | |
|
|
1486 | sub sig2num ($) { &$_sig_name_init; &sig2num } |
|
|
1487 | sub sig2name($) { &$_sig_name_init; &sig2name } |
|
|
1488 | |
1308 | sub _signal { |
1489 | sub signal { |
|
|
1490 | eval q{ # poor man's autoloading {} |
|
|
1491 | # probe for availability of Async::Interrupt |
|
|
1492 | if (_have_async_interrupt) { |
|
|
1493 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
|
|
1494 | |
|
|
1495 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
|
|
1496 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
|
|
1497 | |
|
|
1498 | } else { |
|
|
1499 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
|
|
1500 | |
|
|
1501 | require Fcntl; |
|
|
1502 | |
|
|
1503 | if (AnyEvent::WIN32) { |
|
|
1504 | require AnyEvent::Util; |
|
|
1505 | |
|
|
1506 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
|
|
1507 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_R, 1) if $SIGPIPE_R; |
|
|
1508 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W, 1) if $SIGPIPE_W; # just in case |
|
|
1509 | } else { |
|
|
1510 | pipe $SIGPIPE_R, $SIGPIPE_W; |
|
|
1511 | fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R; |
|
|
1512 | fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case |
|
|
1513 | |
|
|
1514 | # not strictly required, as $^F is normally 2, but let's make sure... |
|
|
1515 | fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1516 | fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1517 | } |
|
|
1518 | |
|
|
1519 | $SIGPIPE_R |
|
|
1520 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
|
|
1521 | |
|
|
1522 | $SIG_IO = AE::io $SIGPIPE_R, 0, \&_signal_exec; |
|
|
1523 | } |
|
|
1524 | |
|
|
1525 | *signal = sub { |
1309 | my (undef, %arg) = @_; |
1526 | my (undef, %arg) = @_; |
1310 | |
1527 | |
1311 | my $signal = uc $arg{signal} |
1528 | my $signal = uc $arg{signal} |
1312 | or Carp::croak "required option 'signal' is missing"; |
1529 | or Carp::croak "required option 'signal' is missing"; |
1313 | |
1530 | |
1314 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
|
|
1315 | |
|
|
1316 | if ($HAVE_ASYNC_INTERRUPT) { |
1531 | if ($HAVE_ASYNC_INTERRUPT) { |
1317 | # async::interrupt |
1532 | # async::interrupt |
1318 | |
1533 | |
1319 | $SIG_ASY{$signal} ||= do { |
1534 | $signal = sig2num $signal; |
1320 | my $asy = new Async::Interrupt |
1535 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
|
|
1536 | |
|
|
1537 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1321 | cb => sub { undef $SIG_EV{$signal} }, |
1538 | cb => sub { undef $SIG_EV{$signal} }, |
1322 | signal => $signal, |
1539 | signal => $signal, |
1323 | pipe => [$SIGPIPE_R->filenos], |
1540 | pipe => [$SIGPIPE_R->filenos], |
|
|
1541 | pipe_autodrain => 0, |
|
|
1542 | ; |
|
|
1543 | |
|
|
1544 | } else { |
|
|
1545 | # pure perl |
|
|
1546 | |
|
|
1547 | # AE::Util has been loaded in signal |
|
|
1548 | $signal = sig2name $signal; |
|
|
1549 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
|
|
1550 | |
|
|
1551 | $SIG{$signal} ||= sub { |
|
|
1552 | local $!; |
|
|
1553 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
|
|
1554 | undef $SIG_EV{$signal}; |
|
|
1555 | }; |
|
|
1556 | |
|
|
1557 | # can't do signal processing without introducing races in pure perl, |
|
|
1558 | # so limit the signal latency. |
|
|
1559 | _sig_add; |
1324 | ; |
1560 | } |
1325 | $asy->pipe_autodrain (0); |
|
|
1326 | |
1561 | |
1327 | $asy |
1562 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
1328 | }; |
1563 | }; |
1329 | |
1564 | |
1330 | } else { |
1565 | *AnyEvent::Base::signal::DESTROY = sub { |
1331 | # pure perl |
1566 | my ($signal, $cb) = @{$_[0]}; |
1332 | |
1567 | |
1333 | $SIG{$signal} ||= sub { |
1568 | _sig_del; |
1334 | local $!; |
1569 | |
1335 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1570 | delete $SIG_CB{$signal}{$cb}; |
|
|
1571 | |
|
|
1572 | $HAVE_ASYNC_INTERRUPT |
|
|
1573 | ? delete $SIG_ASY{$signal} |
|
|
1574 | : # delete doesn't work with older perls - they then |
|
|
1575 | # print weird messages, or just unconditionally exit |
|
|
1576 | # instead of getting the default action. |
1336 | undef $SIG_EV{$signal}; |
1577 | undef $SIG{$signal} |
|
|
1578 | unless keys %{ $SIG_CB{$signal} }; |
1337 | }; |
1579 | }; |
1338 | |
|
|
1339 | # can't do signal processing without introducing races in pure perl, |
|
|
1340 | # so limit the signal latency. |
|
|
1341 | _sig_add; |
|
|
1342 | } |
1580 | }; |
1343 | |
1581 | die if $@; |
1344 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
|
|
1345 | } |
|
|
1346 | |
|
|
1347 | sub signal { |
|
|
1348 | # probe for availability of Async::Interrupt |
|
|
1349 | if (!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} && eval "use Async::Interrupt 0.6 (); 1") { |
|
|
1350 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
|
|
1351 | |
|
|
1352 | $HAVE_ASYNC_INTERRUPT = 1; |
|
|
1353 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
|
|
1354 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec); |
|
|
1355 | |
|
|
1356 | } else { |
|
|
1357 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
|
|
1358 | |
|
|
1359 | require Fcntl; |
|
|
1360 | |
|
|
1361 | if (AnyEvent::WIN32) { |
|
|
1362 | require AnyEvent::Util; |
|
|
1363 | |
|
|
1364 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
|
|
1365 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_R) if $SIGPIPE_R; |
|
|
1366 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) if $SIGPIPE_W; # just in case |
|
|
1367 | } else { |
|
|
1368 | pipe $SIGPIPE_R, $SIGPIPE_W; |
|
|
1369 | fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R; |
|
|
1370 | fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case |
|
|
1371 | |
|
|
1372 | # not strictly required, as $^F is normally 2, but let's make sure... |
|
|
1373 | fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1374 | fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1375 | } |
|
|
1376 | |
|
|
1377 | $SIGPIPE_R |
|
|
1378 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
|
|
1379 | |
|
|
1380 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec); |
|
|
1381 | } |
|
|
1382 | |
|
|
1383 | *signal = \&_signal; |
|
|
1384 | &signal |
1582 | &signal |
1385 | } |
|
|
1386 | |
|
|
1387 | sub AnyEvent::Base::signal::DESTROY { |
|
|
1388 | my ($signal, $cb) = @{$_[0]}; |
|
|
1389 | |
|
|
1390 | _sig_del; |
|
|
1391 | |
|
|
1392 | delete $SIG_CB{$signal}{$cb}; |
|
|
1393 | |
|
|
1394 | $HAVE_ASYNC_INTERRUPT |
|
|
1395 | ? delete $SIG_ASY{$signal} |
|
|
1396 | : # delete doesn't work with older perls - they then |
|
|
1397 | # print weird messages, or just unconditionally exit |
|
|
1398 | # instead of getting the default action. |
|
|
1399 | undef $SIG{$signal} |
|
|
1400 | unless keys %{ $SIG_CB{$signal} }; |
|
|
1401 | } |
1583 | } |
1402 | |
1584 | |
1403 | # default implementation for ->child |
1585 | # default implementation for ->child |
1404 | |
1586 | |
1405 | our %PID_CB; |
1587 | our %PID_CB; |
1406 | our $CHLD_W; |
1588 | our $CHLD_W; |
1407 | our $CHLD_DELAY_W; |
1589 | our $CHLD_DELAY_W; |
1408 | our $WNOHANG; |
1590 | our $WNOHANG; |
1409 | |
1591 | |
|
|
1592 | sub _emit_childstatus($$) { |
|
|
1593 | my (undef, $rpid, $rstatus) = @_; |
|
|
1594 | |
|
|
1595 | $_->($rpid, $rstatus) |
|
|
1596 | for values %{ $PID_CB{$rpid} || {} }, |
|
|
1597 | values %{ $PID_CB{0} || {} }; |
|
|
1598 | } |
|
|
1599 | |
1410 | sub _sigchld { |
1600 | sub _sigchld { |
|
|
1601 | my $pid; |
|
|
1602 | |
|
|
1603 | AnyEvent->_emit_childstatus ($pid, $?) |
1411 | while (0 < (my $pid = waitpid -1, $WNOHANG)) { |
1604 | while ($pid = waitpid -1, $WNOHANG) > 0; |
1412 | $_->($pid, $?) |
|
|
1413 | for values %{ $PID_CB{$pid} || {} }, |
|
|
1414 | values %{ $PID_CB{0} || {} }; |
|
|
1415 | } |
|
|
1416 | } |
1605 | } |
1417 | |
1606 | |
1418 | sub child { |
1607 | sub child { |
1419 | my (undef, %arg) = @_; |
1608 | my (undef, %arg) = @_; |
1420 | |
1609 | |
… | |
… | |
1427 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
1616 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
1428 | ? 1 |
1617 | ? 1 |
1429 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
1618 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
1430 | |
1619 | |
1431 | unless ($CHLD_W) { |
1620 | unless ($CHLD_W) { |
1432 | $CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld); |
1621 | $CHLD_W = AE::signal CHLD => \&_sigchld; |
1433 | # child could be a zombie already, so make at least one round |
1622 | # child could be a zombie already, so make at least one round |
1434 | &_sigchld; |
1623 | &_sigchld; |
1435 | } |
1624 | } |
1436 | |
1625 | |
1437 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
1626 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
… | |
… | |
1463 | # never use more then 50% of the time for the idle watcher, |
1652 | # never use more then 50% of the time for the idle watcher, |
1464 | # within some limits |
1653 | # within some limits |
1465 | $w = 0.0001 if $w < 0.0001; |
1654 | $w = 0.0001 if $w < 0.0001; |
1466 | $w = 5 if $w > 5; |
1655 | $w = 5 if $w > 5; |
1467 | |
1656 | |
1468 | $w = AnyEvent->timer (after => $w, cb => $rcb); |
1657 | $w = AE::timer $w, 0, $rcb; |
1469 | } else { |
1658 | } else { |
1470 | # clean up... |
1659 | # clean up... |
1471 | undef $w; |
1660 | undef $w; |
1472 | undef $rcb; |
1661 | undef $rcb; |
1473 | } |
1662 | } |
1474 | }; |
1663 | }; |
1475 | |
1664 | |
1476 | $w = AnyEvent->timer (after => 0.05, cb => $rcb); |
1665 | $w = AE::timer 0.05, 0, $rcb; |
1477 | |
1666 | |
1478 | bless \\$cb, "AnyEvent::Base::idle" |
1667 | bless \\$cb, "AnyEvent::Base::idle" |
1479 | } |
1668 | } |
1480 | |
1669 | |
1481 | sub AnyEvent::Base::idle::DESTROY { |
1670 | sub AnyEvent::Base::idle::DESTROY { |
… | |
… | |
1535 | Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak}; |
1724 | Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak}; |
1536 | wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0] |
1725 | wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0] |
1537 | } |
1726 | } |
1538 | |
1727 | |
1539 | sub cb { |
1728 | sub cb { |
1540 | $_[0]{_ae_cb} = $_[1] if @_ > 1; |
1729 | my $cv = shift; |
|
|
1730 | |
|
|
1731 | @_ |
|
|
1732 | and $cv->{_ae_cb} = shift |
|
|
1733 | and $cv->{_ae_sent} |
|
|
1734 | and (delete $cv->{_ae_cb})->($cv); |
|
|
1735 | |
1541 | $_[0]{_ae_cb} |
1736 | $cv->{_ae_cb} |
1542 | } |
1737 | } |
1543 | |
1738 | |
1544 | sub begin { |
1739 | sub begin { |
1545 | ++$_[0]{_ae_counter}; |
1740 | ++$_[0]{_ae_counter}; |
1546 | $_[0]{_ae_end_cb} = $_[1] if @_ > 1; |
1741 | $_[0]{_ae_end_cb} = $_[1] if @_ > 1; |
… | |
… | |
1755 | warn "read: $input\n"; # output what has been read |
1950 | warn "read: $input\n"; # output what has been read |
1756 | $cv->send if $input =~ /^q/i; # quit program if /^q/i |
1951 | $cv->send if $input =~ /^q/i; # quit program if /^q/i |
1757 | }, |
1952 | }, |
1758 | ); |
1953 | ); |
1759 | |
1954 | |
1760 | my $time_watcher; # can only be used once |
|
|
1761 | |
|
|
1762 | sub new_timer { |
|
|
1763 | $timer = AnyEvent->timer (after => 1, cb => sub { |
1955 | my $time_watcher = AnyEvent->timer (after => 1, interval => 1, cb => sub { |
1764 | warn "timeout\n"; # print 'timeout' about every second |
1956 | warn "timeout\n"; # print 'timeout' at most every second |
1765 | &new_timer; # and restart the time |
|
|
1766 | }); |
1957 | }); |
1767 | } |
|
|
1768 | |
|
|
1769 | new_timer; # create first timer |
|
|
1770 | |
1958 | |
1771 | $cv->recv; # wait until user enters /^q/i |
1959 | $cv->recv; # wait until user enters /^q/i |
1772 | |
1960 | |
1773 | =head1 REAL-WORLD EXAMPLE |
1961 | =head1 REAL-WORLD EXAMPLE |
1774 | |
1962 | |
… | |
… | |
1905 | through AnyEvent. The benchmark creates a lot of timers (with a zero |
2093 | through AnyEvent. The benchmark creates a lot of timers (with a zero |
1906 | timeout) and I/O watchers (watching STDOUT, a pty, to become writable, |
2094 | timeout) and I/O watchers (watching STDOUT, a pty, to become writable, |
1907 | which it is), lets them fire exactly once and destroys them again. |
2095 | which it is), lets them fire exactly once and destroys them again. |
1908 | |
2096 | |
1909 | Source code for this benchmark is found as F<eg/bench> in the AnyEvent |
2097 | Source code for this benchmark is found as F<eg/bench> in the AnyEvent |
1910 | distribution. |
2098 | distribution. It uses the L<AE> interface, which makes a real difference |
|
|
2099 | for the EV and Perl backends only. |
1911 | |
2100 | |
1912 | =head3 Explanation of the columns |
2101 | =head3 Explanation of the columns |
1913 | |
2102 | |
1914 | I<watcher> is the number of event watchers created/destroyed. Since |
2103 | I<watcher> is the number of event watchers created/destroyed. Since |
1915 | different event models feature vastly different performances, each event |
2104 | different event models feature vastly different performances, each event |
… | |
… | |
1936 | watcher. |
2125 | watcher. |
1937 | |
2126 | |
1938 | =head3 Results |
2127 | =head3 Results |
1939 | |
2128 | |
1940 | name watchers bytes create invoke destroy comment |
2129 | name watchers bytes create invoke destroy comment |
1941 | EV/EV 400000 224 0.47 0.35 0.27 EV native interface |
2130 | EV/EV 100000 223 0.47 0.43 0.27 EV native interface |
1942 | EV/Any 100000 224 2.88 0.34 0.27 EV + AnyEvent watchers |
2131 | EV/Any 100000 223 0.48 0.42 0.26 EV + AnyEvent watchers |
1943 | CoroEV/Any 100000 224 2.85 0.35 0.28 coroutines + Coro::Signal |
2132 | Coro::EV/Any 100000 223 0.47 0.42 0.26 coroutines + Coro::Signal |
1944 | Perl/Any 100000 452 4.13 0.73 0.95 pure perl implementation |
2133 | Perl/Any 100000 431 2.70 0.74 0.92 pure perl implementation |
1945 | Event/Event 16000 517 32.20 31.80 0.81 Event native interface |
2134 | Event/Event 16000 516 31.16 31.84 0.82 Event native interface |
1946 | Event/Any 16000 590 35.85 31.55 1.06 Event + AnyEvent watchers |
2135 | Event/Any 16000 1203 42.61 34.79 1.80 Event + AnyEvent watchers |
1947 | IOAsync/Any 16000 989 38.10 32.77 11.13 via IO::Async::Loop::IO_Poll |
2136 | IOAsync/Any 16000 1911 41.92 27.45 16.81 via IO::Async::Loop::IO_Poll |
1948 | IOAsync/Any 16000 990 37.59 29.50 10.61 via IO::Async::Loop::Epoll |
2137 | IOAsync/Any 16000 1726 40.69 26.37 15.25 via IO::Async::Loop::Epoll |
1949 | Glib/Any 16000 1357 102.33 12.31 51.00 quadratic behaviour |
2138 | Glib/Any 16000 1118 89.00 12.57 51.17 quadratic behaviour |
1950 | Tk/Any 2000 1860 27.20 66.31 14.00 SEGV with >> 2000 watchers |
2139 | Tk/Any 2000 1346 20.96 10.75 8.00 SEGV with >> 2000 watchers |
1951 | POE/Event 2000 6328 109.99 751.67 14.02 via POE::Loop::Event |
2140 | POE/Any 2000 6951 108.97 795.32 14.24 via POE::Loop::Event |
1952 | POE/Select 2000 6027 94.54 809.13 579.80 via POE::Loop::Select |
2141 | POE/Any 2000 6648 94.79 774.40 575.51 via POE::Loop::Select |
1953 | |
2142 | |
1954 | =head3 Discussion |
2143 | =head3 Discussion |
1955 | |
2144 | |
1956 | The benchmark does I<not> measure scalability of the event loop very |
2145 | The benchmark does I<not> measure scalability of the event loop very |
1957 | well. For example, a select-based event loop (such as the pure perl one) |
2146 | well. For example, a select-based event loop (such as the pure perl one) |
… | |
… | |
1969 | benchmark machine, handling an event takes roughly 1600 CPU cycles with |
2158 | benchmark machine, handling an event takes roughly 1600 CPU cycles with |
1970 | EV, 3100 CPU cycles with AnyEvent's pure perl loop and almost 3000000 CPU |
2159 | EV, 3100 CPU cycles with AnyEvent's pure perl loop and almost 3000000 CPU |
1971 | cycles with POE. |
2160 | cycles with POE. |
1972 | |
2161 | |
1973 | C<EV> is the sole leader regarding speed and memory use, which are both |
2162 | C<EV> is the sole leader regarding speed and memory use, which are both |
1974 | maximal/minimal, respectively. Even when going through AnyEvent, it uses |
2163 | maximal/minimal, respectively. When using the L<AE> API there is zero |
|
|
2164 | overhead (when going through the AnyEvent API create is about 5-6 times |
|
|
2165 | slower, with other times being equal, so still uses far less memory than |
1975 | far less memory than any other event loop and is still faster than Event |
2166 | any other event loop and is still faster than Event natively). |
1976 | natively. |
|
|
1977 | |
2167 | |
1978 | The pure perl implementation is hit in a few sweet spots (both the |
2168 | The pure perl implementation is hit in a few sweet spots (both the |
1979 | constant timeout and the use of a single fd hit optimisations in the perl |
2169 | constant timeout and the use of a single fd hit optimisations in the perl |
1980 | interpreter and the backend itself). Nevertheless this shows that it |
2170 | interpreter and the backend itself). Nevertheless this shows that it |
1981 | adds very little overhead in itself. Like any select-based backend its |
2171 | adds very little overhead in itself. Like any select-based backend its |
… | |
… | |
2055 | In this benchmark, we use 10000 socket pairs (20000 sockets), of which 100 |
2245 | In this benchmark, we use 10000 socket pairs (20000 sockets), of which 100 |
2056 | (1%) are active. This mirrors the activity of large servers with many |
2246 | (1%) are active. This mirrors the activity of large servers with many |
2057 | connections, most of which are idle at any one point in time. |
2247 | connections, most of which are idle at any one point in time. |
2058 | |
2248 | |
2059 | Source code for this benchmark is found as F<eg/bench2> in the AnyEvent |
2249 | Source code for this benchmark is found as F<eg/bench2> in the AnyEvent |
2060 | distribution. |
2250 | distribution. It uses the L<AE> interface, which makes a real difference |
|
|
2251 | for the EV and Perl backends only. |
2061 | |
2252 | |
2062 | =head3 Explanation of the columns |
2253 | =head3 Explanation of the columns |
2063 | |
2254 | |
2064 | I<sockets> is the number of sockets, and twice the number of "servers" (as |
2255 | I<sockets> is the number of sockets, and twice the number of "servers" (as |
2065 | each server has a read and write socket end). |
2256 | each server has a read and write socket end). |
… | |
… | |
2073 | a new one that moves the timeout into the future. |
2264 | a new one that moves the timeout into the future. |
2074 | |
2265 | |
2075 | =head3 Results |
2266 | =head3 Results |
2076 | |
2267 | |
2077 | name sockets create request |
2268 | name sockets create request |
2078 | EV 20000 69.01 11.16 |
2269 | EV 20000 62.66 7.99 |
2079 | Perl 20000 73.32 35.87 |
2270 | Perl 20000 68.32 32.64 |
2080 | IOAsync 20000 157.00 98.14 epoll |
2271 | IOAsync 20000 174.06 101.15 epoll |
2081 | IOAsync 20000 159.31 616.06 poll |
2272 | IOAsync 20000 174.67 610.84 poll |
2082 | Event 20000 212.62 257.32 |
2273 | Event 20000 202.69 242.91 |
2083 | Glib 20000 651.16 1896.30 |
2274 | Glib 20000 557.01 1689.52 |
2084 | POE 20000 349.67 12317.24 uses POE::Loop::Event |
2275 | POE 20000 341.54 12086.32 uses POE::Loop::Event |
2085 | |
2276 | |
2086 | =head3 Discussion |
2277 | =head3 Discussion |
2087 | |
2278 | |
2088 | This benchmark I<does> measure scalability and overall performance of the |
2279 | This benchmark I<does> measure scalability and overall performance of the |
2089 | particular event loop. |
2280 | particular event loop. |
… | |
… | |
2215 | As you can see, the AnyEvent + EV combination even beats the |
2406 | As you can see, the AnyEvent + EV combination even beats the |
2216 | hand-optimised "raw sockets benchmark", while AnyEvent + its pure perl |
2407 | hand-optimised "raw sockets benchmark", while AnyEvent + its pure perl |
2217 | backend easily beats IO::Lambda and POE. |
2408 | backend easily beats IO::Lambda and POE. |
2218 | |
2409 | |
2219 | And even the 100% non-blocking version written using the high-level (and |
2410 | And even the 100% non-blocking version written using the high-level (and |
2220 | slow :) L<AnyEvent::Handle> abstraction beats both POE and IO::Lambda by a |
2411 | slow :) L<AnyEvent::Handle> abstraction beats both POE and IO::Lambda |
2221 | large margin, even though it does all of DNS, tcp-connect and socket I/O |
2412 | higher level ("unoptimised") abstractions by a large margin, even though |
2222 | in a non-blocking way. |
2413 | it does all of DNS, tcp-connect and socket I/O in a non-blocking way. |
2223 | |
2414 | |
2224 | The two AnyEvent benchmarks programs can be found as F<eg/ae0.pl> and |
2415 | The two AnyEvent benchmarks programs can be found as F<eg/ae0.pl> and |
2225 | F<eg/ae2.pl> in the AnyEvent distribution, the remaining benchmarks are |
2416 | F<eg/ae2.pl> in the AnyEvent distribution, the remaining benchmarks are |
2226 | part of the IO::lambda distribution and were used without any changes. |
2417 | part of the IO::Lambda distribution and were used without any changes. |
2227 | |
2418 | |
2228 | |
2419 | |
2229 | =head1 SIGNALS |
2420 | =head1 SIGNALS |
2230 | |
2421 | |
2231 | AnyEvent currently installs handlers for these signals: |
2422 | AnyEvent currently installs handlers for these signals: |
… | |
… | |
2273 | it's built-in modules) are required to use it. |
2464 | it's built-in modules) are required to use it. |
2274 | |
2465 | |
2275 | That does not mean that AnyEvent won't take advantage of some additional |
2466 | That does not mean that AnyEvent won't take advantage of some additional |
2276 | modules if they are installed. |
2467 | modules if they are installed. |
2277 | |
2468 | |
2278 | This section epxlains which additional modules will be used, and how they |
2469 | This section explains which additional modules will be used, and how they |
2279 | affect AnyEvent's operetion. |
2470 | affect AnyEvent's operation. |
2280 | |
2471 | |
2281 | =over 4 |
2472 | =over 4 |
2282 | |
2473 | |
2283 | =item L<Async::Interrupt> |
2474 | =item L<Async::Interrupt> |
2284 | |
2475 | |
… | |
… | |
2289 | catch the signals) with some delay (default is 10 seconds, look for |
2480 | catch the signals) with some delay (default is 10 seconds, look for |
2290 | C<$AnyEvent::MAX_SIGNAL_LATENCY>). |
2481 | C<$AnyEvent::MAX_SIGNAL_LATENCY>). |
2291 | |
2482 | |
2292 | If this module is available, then it will be used to implement signal |
2483 | If this module is available, then it will be used to implement signal |
2293 | catching, which means that signals will not be delayed, and the event loop |
2484 | catching, which means that signals will not be delayed, and the event loop |
2294 | will not be interrupted regularly, which is more efficient (And good for |
2485 | will not be interrupted regularly, which is more efficient (and good for |
2295 | battery life on laptops). |
2486 | battery life on laptops). |
2296 | |
2487 | |
2297 | This affects not just the pure-perl event loop, but also other event loops |
2488 | This affects not just the pure-perl event loop, but also other event loops |
2298 | that have no signal handling on their own (e.g. Glib, Tk, Qt). |
2489 | that have no signal handling on their own (e.g. Glib, Tk, Qt). |
2299 | |
2490 | |
… | |
… | |
2320 | lot less memory), but otherwise doesn't affect guard operation much. It is |
2511 | lot less memory), but otherwise doesn't affect guard operation much. It is |
2321 | purely used for performance. |
2512 | purely used for performance. |
2322 | |
2513 | |
2323 | =item L<JSON> and L<JSON::XS> |
2514 | =item L<JSON> and L<JSON::XS> |
2324 | |
2515 | |
2325 | This module is required when you want to read or write JSON data via |
2516 | One of these modules is required when you want to read or write JSON data |
2326 | L<AnyEvent::Handle>. It is also written in pure-perl, but can take |
2517 | via L<AnyEvent::Handle>. It is also written in pure-perl, but can take |
2327 | advantage of the ultra-high-speed L<JSON::XS> module when it is installed. |
2518 | advantage of the ultra-high-speed L<JSON::XS> module when it is installed. |
2328 | |
2519 | |
2329 | In fact, L<AnyEvent::Handle> will use L<JSON::XS> by default if it is |
2520 | In fact, L<AnyEvent::Handle> will use L<JSON::XS> by default if it is |
2330 | installed. |
2521 | installed. |
2331 | |
2522 | |
… | |
… | |
2346 | |
2537 | |
2347 | |
2538 | |
2348 | =head1 FORK |
2539 | =head1 FORK |
2349 | |
2540 | |
2350 | Most event libraries are not fork-safe. The ones who are usually are |
2541 | Most event libraries are not fork-safe. The ones who are usually are |
2351 | because they rely on inefficient but fork-safe C<select> or C<poll> |
2542 | because they rely on inefficient but fork-safe C<select> or C<poll> calls |
2352 | calls. Only L<EV> is fully fork-aware. |
2543 | - higher performance APIs such as BSD's kqueue or the dreaded Linux epoll |
|
|
2544 | are usually badly thought-out hacks that are incompatible with fork in |
|
|
2545 | one way or another. Only L<EV> is fully fork-aware and ensures that you |
|
|
2546 | continue event-processing in both parent and child (or both, if you know |
|
|
2547 | what you are doing). |
|
|
2548 | |
|
|
2549 | This means that, in general, you cannot fork and do event processing in |
|
|
2550 | the child if the event library was initialised before the fork (which |
|
|
2551 | usually happens when the first AnyEvent watcher is created, or the library |
|
|
2552 | is loaded). |
2353 | |
2553 | |
2354 | If you have to fork, you must either do so I<before> creating your first |
2554 | If you have to fork, you must either do so I<before> creating your first |
2355 | watcher OR you must not use AnyEvent at all in the child OR you must do |
2555 | watcher OR you must not use AnyEvent at all in the child OR you must do |
2356 | something completely out of the scope of AnyEvent. |
2556 | something completely out of the scope of AnyEvent. |
|
|
2557 | |
|
|
2558 | The problem of doing event processing in the parent I<and> the child |
|
|
2559 | is much more complicated: even for backends that I<are> fork-aware or |
|
|
2560 | fork-safe, their behaviour is not usually what you want: fork clones all |
|
|
2561 | watchers, that means all timers, I/O watchers etc. are active in both |
|
|
2562 | parent and child, which is almost never what you want. USing C<exec> |
|
|
2563 | to start worker children from some kind of manage rprocess is usually |
|
|
2564 | preferred, because it is much easier and cleaner, at the expense of having |
|
|
2565 | to have another binary. |
2357 | |
2566 | |
2358 | |
2567 | |
2359 | =head1 SECURITY CONSIDERATIONS |
2568 | =head1 SECURITY CONSIDERATIONS |
2360 | |
2569 | |
2361 | AnyEvent can be forced to load any event model via |
2570 | AnyEvent can be forced to load any event model via |
… | |
… | |
2399 | L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. |
2608 | L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. |
2400 | |
2609 | |
2401 | Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, |
2610 | Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, |
2402 | L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, |
2611 | L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, |
2403 | L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, |
2612 | L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, |
2404 | L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>. |
2613 | L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>. |
2405 | |
2614 | |
2406 | Non-blocking file handles, sockets, TCP clients and |
2615 | Non-blocking file handles, sockets, TCP clients and |
2407 | servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. |
2616 | servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. |
2408 | |
2617 | |
2409 | Asynchronous DNS: L<AnyEvent::DNS>. |
2618 | Asynchronous DNS: L<AnyEvent::DNS>. |