1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | AnyEvent - provide framework for multiple event loops |
3 | AnyEvent - provide framework for multiple event loops |
4 | |
4 | |
5 | Event, Coro, Glib, Tk, Perl - various supported event loops |
5 | EV, Event, Coro::EV, Coro::Event, Glib, Tk, Perl - various supported event loops |
6 | |
6 | |
7 | =head1 SYNOPSIS |
7 | =head1 SYNOPSIS |
8 | |
8 | |
9 | use AnyEvent; |
9 | use AnyEvent; |
10 | |
10 | |
… | |
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75 | The interface itself is vaguely similar but not identical to the Event |
75 | The interface itself is vaguely similar but not identical to the Event |
76 | module. |
76 | module. |
77 | |
77 | |
78 | On the first call of any method, the module tries to detect the currently |
78 | On the first call of any method, the module tries to detect the currently |
79 | loaded event loop by probing wether any of the following modules is |
79 | loaded event loop by probing wether any of the following modules is |
80 | loaded: L<Coro::Event>, L<Event>, L<Glib>, L<Tk>. The first one found is |
80 | loaded: L<Coro::EV>, L<Coro::Event>, L<EV>, L<Event>, L<Glib>, L<Tk>. The |
81 | used. If none is found, the module tries to load these modules in the |
81 | first one found is used. If none are found, the module tries to load these |
82 | order given. The first one that could be successfully loaded will be |
82 | modules in the order given. The first one that could be successfully |
83 | used. If still none could be found, AnyEvent will fall back to a pure-perl |
83 | loaded will be used. If still none could be found, AnyEvent will fall back |
84 | event loop, which is also not very efficient. |
84 | to a pure-perl event loop, which is also not very efficient. |
85 | |
85 | |
86 | Because AnyEvent first checks for modules that are already loaded, loading |
86 | Because AnyEvent first checks for modules that are already loaded, loading |
87 | an Event model explicitly before first using AnyEvent will likely make |
87 | an Event model explicitly before first using AnyEvent will likely make |
88 | that model the default. For example: |
88 | that model the default. For example: |
89 | |
89 | |
… | |
… | |
117 | |
117 | |
118 | C<fh> the Perl I<filehandle> (not filedescriptor) to watch for |
118 | C<fh> the Perl I<filehandle> (not filedescriptor) to watch for |
119 | events. C<poll> must be a string that is either C<r> or C<w>, that creates |
119 | events. C<poll> must be a string that is either C<r> or C<w>, that creates |
120 | a watcher waiting for "r"eadable or "w"ritable events. C<cb> the callback |
120 | a watcher waiting for "r"eadable or "w"ritable events. C<cb> the callback |
121 | to invoke everytime the filehandle becomes ready. |
121 | to invoke everytime the filehandle becomes ready. |
122 | |
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123 | Only one io watcher per C<fh> and C<poll> combination is allowed (i.e. on |
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124 | a socket you can have one r + one w, not any more (limitation comes from |
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125 | Tk - if you are sure you are not using Tk this limitation is gone). |
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126 | |
122 | |
127 | Filehandles will be kept alive, so as long as the watcher exists, the |
123 | Filehandles will be kept alive, so as long as the watcher exists, the |
128 | filehandle exists, too. |
124 | filehandle exists, too. |
129 | |
125 | |
130 | Example: |
126 | Example: |
… | |
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257 | AnyEvent has been extended at runtime (e.g. in I<rxvt-unicode>). |
253 | AnyEvent has been extended at runtime (e.g. in I<rxvt-unicode>). |
258 | |
254 | |
259 | The known classes so far are: |
255 | The known classes so far are: |
260 | |
256 | |
261 | AnyEvent::Impl::CoroEV based on Coro::EV, best choice. |
257 | AnyEvent::Impl::CoroEV based on Coro::EV, best choice. |
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258 | AnyEvent::Impl::CoroEvent based on Coro::Event, second best choice. |
262 | AnyEvent::Impl::EV based on EV (an interface to libev, also best choice). |
259 | AnyEvent::Impl::EV based on EV (an interface to libev, also best choice). |
263 | AnyEvent::Impl::CoroEvent based on Coro::Event, second best choice. |
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264 | AnyEvent::Impl::Event based on Event, also second best choice :) |
260 | AnyEvent::Impl::Event based on Event, also second best choice :) |
265 | AnyEvent::Impl::Glib based on Glib, third-best choice. |
261 | AnyEvent::Impl::Glib based on Glib, third-best choice. |
266 | AnyEvent::Impl::Tk based on Tk, very bad choice. |
262 | AnyEvent::Impl::Tk based on Tk, very bad choice. |
267 | AnyEvent::Impl::Perl pure-perl implementation, inefficient but portable. |
263 | AnyEvent::Impl::Perl pure-perl implementation, inefficient but portable. |
268 | |
264 | |
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323 | |
319 | |
324 | our @REGISTRY; |
320 | our @REGISTRY; |
325 | |
321 | |
326 | my @models = ( |
322 | my @models = ( |
327 | [Coro::EV:: => AnyEvent::Impl::CoroEV::], |
323 | [Coro::EV:: => AnyEvent::Impl::CoroEV::], |
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324 | [Coro::Event:: => AnyEvent::Impl::CoroEvent::], |
328 | [EV:: => AnyEvent::Impl::EV::], |
325 | [EV:: => AnyEvent::Impl::EV::], |
329 | [Coro::Event:: => AnyEvent::Impl::CoroEvent::], |
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330 | [Event:: => AnyEvent::Impl::Event::], |
326 | [Event:: => AnyEvent::Impl::Event::], |
331 | [Glib:: => AnyEvent::Impl::Glib::], |
327 | [Glib:: => AnyEvent::Impl::Glib::], |
332 | [Tk:: => AnyEvent::Impl::Tk::], |
328 | [Tk:: => AnyEvent::Impl::Tk::], |
333 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl::], |
329 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl::], |
334 | ); |
330 | ); |