[ViewVC] Diff of: cvs/AnyEvent/lib/AnyEvent.pm

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.228 by root, Wed Jul 8 01:11:12 2009 UTC vs.
Revision 1.242 by root, Fri Jul 17 22:05:12 2009 UTC

…		…
176	=head2 I/O WATCHERS	176	=head2 I/O WATCHERS
177		177
178	You can create an I/O watcher by calling the C<< AnyEvent->io >> method	178	You can create an I/O watcher by calling the C<< AnyEvent->io >> method
179	with the following mandatory key-value pairs as arguments:	179	with the following mandatory key-value pairs as arguments:
180		180
181	C<fh> is the Perl I<file handle> (I<not> file descriptor, see below) to	181	C<fh> is the Perl I<file handle> (or a naked file descriptor) to watch
182	watch for events (AnyEvent might or might not keep a reference to this	182	for events (AnyEvent might or might not keep a reference to this file
183	file handle). Note that only file handles pointing to things for which	183	handle). Note that only file handles pointing to things for which
184	non-blocking operation makes sense are allowed. This includes sockets,	184	non-blocking operation makes sense are allowed. This includes sockets,
185	most character devices, pipes, fifos and so on, but not for example files	185	most character devices, pipes, fifos and so on, but not for example files
186	or block devices.	186	or block devices.
187		187
188	C<poll> must be a string that is either C<r> or C<w>, which creates a	188	C<poll> must be a string that is either C<r> or C<w>, which creates a
…		…
209	chomp (my $input = <STDIN>);	209	chomp (my $input = <STDIN>);
210	warn "read: $input\n";	210	warn "read: $input\n";
211	undef $w;	211	undef $w;
212	});	212	});
213		213
214	=head3 GETTING A FILE HANDLE FROM A FILE DESCRIPTOR
215
216	It is not uncommon to only have a file descriptor, while AnyEvent requires
217	a Perl file handle.
218
219	There are basically two methods to convert a file descriptor into a file handle. If you own
220	the file descriptor, you can open it with C<&=>, as in:
221
222	open my $fh, "<&=$fileno" or die "xxx: §!";
223
224	This will "own" the file descriptor, meaning that when C<$fh> is
225	destroyed, it will automatically close the C<$fileno>. Also, note that
226	the open mode (read, write, read/write) must correspond with how the
227	underlying file descriptor was opened.
228
229	In many cases, taking over the file descriptor is now what you want, in
230	which case the only alternative is to dup the file descriptor:
231
232	open my $fh, "<&$fileno" or die "xxx: $!";
233
234	This has the advantage of not closing the file descriptor and the
235	disadvantage of making a slow copy.
236
237	=head2 TIME WATCHERS	214	=head2 TIME WATCHERS
238		215
239	You can create a time watcher by calling the C<< AnyEvent->timer >>	216	You can create a time watcher by calling the C<< AnyEvent->timer >>
240	method with the following mandatory arguments:	217	method with the following mandatory arguments:
241		218
…		…
384	invocation, and callback invocation will be synchronous. Synchronous means	361	invocation, and callback invocation will be synchronous. Synchronous means
385	that it might take a while until the signal gets handled by the process,	362	that it might take a while until the signal gets handled by the process,
386	but it is guaranteed not to interrupt any other callbacks.	363	but it is guaranteed not to interrupt any other callbacks.
387		364
388	The main advantage of using these watchers is that you can share a signal	365	The main advantage of using these watchers is that you can share a signal
389	between multiple watchers.	366	between multiple watchers, and AnyEvent will ensure that signals will not
		367	interrupt your program at bad times.
390		368
391	This watcher might use C<%SIG>, so programs overwriting those signals	369	This watcher might use C<%SIG> (depending on the event loop used),
392	directly will likely not work correctly.	370	so programs overwriting those signals directly will likely not work
		371	correctly.
		372
		373	Also note that many event loops (e.g. Glib, Tk, Qt, IO::Async) do not
		374	support attaching callbacks to signals, which is a pity, as you cannot do
		375	race-free signal handling in perl. AnyEvent will try to do it's best, but
		376	in some cases, signals will be delayed. The maximum time a signal might
		377	be delayed is specified in C<$AnyEvent::MAX_SIGNAL_LATENCY> (default: 10
		378	seconds). This variable can be changed only before the first signal
		379	watcher is created, and should be left alone otherwise. Higher values
		380	will cause fewer spurious wake-ups, which is better for power and CPU
		381	saving. All these problems can be avoided by installing the optional
		382	L<Async::Interrupt> module.
393		383
394	Example: exit on SIGINT	384	Example: exit on SIGINT
395		385
396	my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 });	386	my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 });
397		387
…		…
426		416
427	This means you cannot create a child watcher as the very first	417	This means you cannot create a child watcher as the very first
428	thing in an AnyEvent program, you I<have> to create at least one	418	thing in an AnyEvent program, you I<have> to create at least one
429	watcher before you C<fork> the child (alternatively, you can call	419	watcher before you C<fork> the child (alternatively, you can call
430	C<AnyEvent::detect>).	420	C<AnyEvent::detect>).
		421
		422	As most event loops do not support waiting for child events, they will be
		423	emulated by AnyEvent in most cases, in which the latency and race problems
		424	mentioned in the description of signal watchers apply.
431		425
432	Example: fork a process and wait for it	426	Example: fork a process and wait for it
433		427
434	my $done = AnyEvent->condvar;	428	my $done = AnyEvent->condvar;
435		429
…		…
486		480
487	If you are familiar with some event loops you will know that all of them	481	If you are familiar with some event loops you will know that all of them
488	require you to run some blocking "loop", "run" or similar function that	482	require you to run some blocking "loop", "run" or similar function that
489	will actively watch for new events and call your callbacks.	483	will actively watch for new events and call your callbacks.
490		484
491	AnyEvent is different, it expects somebody else to run the event loop and	485	AnyEvent is slightly different: it expects somebody else to run the event
492	will only block when necessary (usually when told by the user).	486	loop and will only block when necessary (usually when told by the user).
493		487
494	The instrument to do that is called a "condition variable", so called	488	The instrument to do that is called a "condition variable", so called
495	because they represent a condition that must become true.	489	because they represent a condition that must become true.
496		490
		491	Now is probably a good time to look at the examples further below.
		492
497	Condition variables can be created by calling the C<< AnyEvent->condvar	493	Condition variables can be created by calling the C<< AnyEvent->condvar
498	>> method, usually without arguments. The only argument pair allowed is	494	>> method, usually without arguments. The only argument pair allowed is
499
500	C<cb>, which specifies a callback to be called when the condition variable	495	C<cb>, which specifies a callback to be called when the condition variable
501	becomes true, with the condition variable as the first argument (but not	496	becomes true, with the condition variable as the first argument (but not
502	the results).	497	the results).
503		498
504	After creation, the condition variable is "false" until it becomes "true"	499	After creation, the condition variable is "false" until it becomes "true"
…		…
553	after => 1,	548	after => 1,
554	cb => sub { $result_ready->send },	549	cb => sub { $result_ready->send },
555	);	550	);
556		551
557	# this "blocks" (while handling events) till the callback	552	# this "blocks" (while handling events) till the callback
558	# calls send	553	# calls -<send
559	$result_ready->recv;	554	$result_ready->recv;
560		555
561	Example: wait for a timer, but take advantage of the fact that	556	Example: wait for a timer, but take advantage of the fact that condition
562	condition variables are also code references.	557	variables are also callable directly.
563		558
564	my $done = AnyEvent->condvar;	559	my $done = AnyEvent->condvar;
565	my $delay = AnyEvent->timer (after => 5, cb => $done);	560	my $delay = AnyEvent->timer (after => 5, cb => $done);
566	$done->recv;	561	$done->recv;
567		562
…		…
573		568
574	...	569	...
575		570
576	my @info = $couchdb->info->recv;	571	my @info = $couchdb->info->recv;
577		572
578	And this is how you would just ste a callback to be called whenever the	573	And this is how you would just set a callback to be called whenever the
579	results are available:	574	results are available:
580		575
581	$couchdb->info->cb (sub {	576	$couchdb->info->cb (sub {
582	my @info = $_[0]->recv;	577	my @info = $_[0]->recv;
583	});	578	});
…		…
601	immediately from within send.	596	immediately from within send.
602		597
603	Any arguments passed to the C<send> call will be returned by all	598	Any arguments passed to the C<send> call will be returned by all
604	future C<< ->recv >> calls.	599	future C<< ->recv >> calls.
605		600
606	Condition variables are overloaded so one can call them directly	601	Condition variables are overloaded so one can call them directly (as if
607	(as a code reference). Calling them directly is the same as calling	602	they were a code reference). Calling them directly is the same as calling
608	C<send>. Note, however, that many C-based event loops do not handle	603	C<send>.
609	overloading, so as tempting as it may be, passing a condition variable
610	instead of a callback does not work. Both the pure perl and EV loops
611	support overloading, however, as well as all functions that use perl to
612	invoke a callback (as in L<AnyEvent::Socket> and L<AnyEvent::DNS> for
613	example).
614		604
615	=item $cv->croak ($error)	605	=item $cv->croak ($error)
616		606
617	Similar to send, but causes all call's to C<< ->recv >> to invoke	607	Similar to send, but causes all call's to C<< ->recv >> to invoke
618	C<Carp::croak> with the given error message/object/scalar.	608	C<Carp::croak> with the given error message/object/scalar.
619		609
620	This can be used to signal any errors to the condition variable	610	This can be used to signal any errors to the condition variable
621	user/consumer.	611	user/consumer. Doing it this way instead of calling C<croak> directly
		612	delays the error detetcion, but has the overwhelmign advantage that it
		613	diagnoses the error at the place where the result is expected, and not
		614	deep in some event clalback without connection to the actual code causing
		615	the problem.
622		616
623	=item $cv->begin ([group callback])	617	=item $cv->begin ([group callback])
624		618
625	=item $cv->end	619	=item $cv->end
626		620
…		…
722	function will call C<croak>.	716	function will call C<croak>.
723		717
724	In list context, all parameters passed to C<send> will be returned,	718	In list context, all parameters passed to C<send> will be returned,
725	in scalar context only the first one will be returned.	719	in scalar context only the first one will be returned.
726		720
		721	Note that doing a blocking wait in a callback is not supported by any
		722	event loop, that is, recursive invocation of a blocking C<< ->recv
		723	>> is not allowed, and the C<recv> call will C<croak> if such a
		724	condition is detected. This condition can be slightly loosened by using
		725	L<Coro::AnyEvent>, which allows you to do a blocking C<< ->recv >> from
		726	any thread that doesn't run the event loop itself.
		727
727	Not all event models support a blocking wait - some die in that case	728	Not all event models support a blocking wait - some die in that case
728	(programs might want to do that to stay interactive), so I<if you are	729	(programs might want to do that to stay interactive), so I<if you are
729	using this from a module, never require a blocking wait>, but let the	730	using this from a module, never require a blocking wait>. Instead, let the
730	caller decide whether the call will block or not (for example, by coupling	731	caller decide whether the call will block or not (for example, by coupling
731	condition variables with some kind of request results and supporting	732	condition variables with some kind of request results and supporting
732	callbacks so the caller knows that getting the result will not block,	733	callbacks so the caller knows that getting the result will not block,
733	while still supporting blocking waits if the caller so desires).	734	while still supporting blocking waits if the caller so desires).
734		735
735	Another reason I<never> to C<< ->recv >> in a module is that you cannot
736	sensibly have two C<< ->recv >>'s in parallel, as that would require
737	multiple interpreters or coroutines/threads, none of which C<AnyEvent>
738	can supply.
739
740	The L<Coro> module, however, I<can> and I<does> supply coroutines and, in
741	fact, L<Coro::AnyEvent> replaces AnyEvent's condvars by coroutine-safe
742	versions and also integrates coroutines into AnyEvent, making blocking
743	C<< ->recv >> calls perfectly safe as long as they are done from another
744	coroutine (one that doesn't run the event loop).
745
746	You can ensure that C<< -recv >> never blocks by setting a callback and	736	You can ensure that C<< -recv >> never blocks by setting a callback and
747	only calling C<< ->recv >> from within that callback (or at a later	737	only calling C<< ->recv >> from within that callback (or at a later
748	time). This will work even when the event loop does not support blocking	738	time). This will work even when the event loop does not support blocking
749	waits otherwise.	739	waits otherwise.
750		740
…		…
763	variable itself. Calling C<recv> inside the callback or at any later time	753	variable itself. Calling C<recv> inside the callback or at any later time
764	is guaranteed not to block.	754	is guaranteed not to block.
765		755
766	=back	756	=back
767		757
		758	=head1 SUPPORTED EVENT LOOPS/BACKENDS
		759
		760	The available backend classes are (every class has its own manpage):
		761
		762	=over 4
		763
		764	=item Backends that are autoprobed when no other event loop can be found.
		765
		766	EV is the preferred backend when no other event loop seems to be in
		767	use. If EV is not installed, then AnyEvent will try Event, and, failing
		768	that, will fall back to its own pure-perl implementation, which is
		769	available everywhere as it comes with AnyEvent itself.
		770
		771	AnyEvent::Impl::EV based on EV (interface to libev, best choice).
		772	AnyEvent::Impl::Event based on Event, very stable, few glitches.
		773	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.
		774
		775	=item Backends that are transparently being picked up when they are used.
		776
		777	These will be used when they are currently loaded when the first watcher
		778	is created, in which case it is assumed that the application is using
		779	them. This means that AnyEvent will automatically pick the right backend
		780	when the main program loads an event module before anything starts to
		781	create watchers. Nothing special needs to be done by the main program.
		782
		783	AnyEvent::Impl::Glib based on Glib, slow but very stable.
		784	AnyEvent::Impl::Tk based on Tk, very broken.
		785	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
		786	AnyEvent::Impl::POE based on POE, very slow, some limitations.
		787
		788	=item Backends with special needs.
		789
		790	Qt requires the Qt::Application to be instantiated first, but will
		791	otherwise be picked up automatically. As long as the main program
		792	instantiates the application before any AnyEvent watchers are created,
		793	everything should just work.
		794
		795	AnyEvent::Impl::Qt based on Qt.
		796
		797	Support for IO::Async can only be partial, as it is too broken and
		798	architecturally limited to even support the AnyEvent API. It also
		799	is the only event loop that needs the loop to be set explicitly, so
		800	it can only be used by a main program knowing about AnyEvent. See
		801	L<AnyEvent::Impl::Async> for the gory details.
		802
		803	AnyEvent::Impl::IOAsync based on IO::Async, cannot be autoprobed.
		804
		805	=item Event loops that are indirectly supported via other backends.
		806
		807	Some event loops can be supported via other modules:
		808
		809	There is no direct support for WxWidgets (L<Wx>) or L<Prima>.
		810
		811	B<WxWidgets> has no support for watching file handles. However, you can
		812	use WxWidgets through the POE adaptor, as POE has a Wx backend that simply
		813	polls 20 times per second, which was considered to be too horrible to even
		814	consider for AnyEvent.
		815
		816	B<Prima> is not supported as nobody seems to be using it, but it has a POE
		817	backend, so it can be supported through POE.
		818
		819	AnyEvent knows about both L<Prima> and L<Wx>, however, and will try to
		820	load L<POE> when detecting them, in the hope that POE will pick them up,
		821	in which case everything will be automatic.
		822
		823	=back
		824
768	=head1 GLOBAL VARIABLES AND FUNCTIONS	825	=head1 GLOBAL VARIABLES AND FUNCTIONS
769		826
		827	These are not normally required to use AnyEvent, but can be useful to
		828	write AnyEvent extension modules.
		829
770	=over 4	830	=over 4
771		831
772	=item $AnyEvent::MODEL	832	=item $AnyEvent::MODEL
773		833
774	Contains C<undef> until the first watcher is being created. Then it	834	Contains C<undef> until the first watcher is being created, before the
		835	backend has been autodetected.
		836
775	contains the event model that is being used, which is the name of the	837	Afterwards it contains the event model that is being used, which is the
776	Perl class implementing the model. This class is usually one of the	838	name of the Perl class implementing the model. This class is usually one
777	C<AnyEvent::Impl:xxx> modules, but can be any other class in the case	839	of the C<AnyEvent::Impl:xxx> modules, but can be any other class in the
778	AnyEvent has been extended at runtime (e.g. in I<rxvt-unicode>).	840	case AnyEvent has been extended at runtime (e.g. in I<rxvt-unicode> it
779		841	will be C<urxvt::anyevent>).
780	The known classes so far are:
781
782	AnyEvent::Impl::EV based on EV (an interface to libev, best choice).
783	AnyEvent::Impl::Event based on Event, second best choice.
784	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.
785	AnyEvent::Impl::Glib based on Glib, third-best choice.
786	AnyEvent::Impl::Tk based on Tk, very bad choice.
787	AnyEvent::Impl::Qt based on Qt, cannot be autoprobed (see its docs).
788	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
789	AnyEvent::Impl::POE based on POE, not generic enough for full support.
790
791	# warning, support for IO::Async is only partial, as it is too broken
792	# and limited toe ven support the AnyEvent API. See AnyEvent::Impl::Async.
793	AnyEvent::Impl::IOAsync based on IO::Async, cannot be autoprobed (see its docs).
794
795	There is no support for WxWidgets, as WxWidgets has no support for
796	watching file handles. However, you can use WxWidgets through the
797	POE Adaptor, as POE has a Wx backend that simply polls 20 times per
798	second, which was considered to be too horrible to even consider for
799	AnyEvent. Likewise, other POE backends can be used by AnyEvent by using
800	it's adaptor.
801
802	AnyEvent knows about L<Prima> and L<Wx> and will try to use L<POE> when
803	autodetecting them.
804		842
805	=item AnyEvent::detect	843	=item AnyEvent::detect
806		844
807	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model	845	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model
808	if necessary. You should only call this function right before you would	846	if necessary. You should only call this function right before you would
809	have created an AnyEvent watcher anyway, that is, as late as possible at	847	have created an AnyEvent watcher anyway, that is, as late as possible at
810	runtime.	848	runtime, and not e.g. while initialising of your module.
		849
		850	If you need to do some initialisation before AnyEvent watchers are
		851	created, use C<post_detect>.
811		852
812	=item $guard = AnyEvent::post_detect { BLOCK }	853	=item $guard = AnyEvent::post_detect { BLOCK }
813		854
814	Arranges for the code block to be executed as soon as the event model is	855	Arranges for the code block to be executed as soon as the event model is
815	autodetected (or immediately if this has already happened).	856	autodetected (or immediately if this has already happened).
		857
		858	The block will be executed I<after> the actual backend has been detected
		859	(C<$AnyEvent::MODEL> is set), but I<before> any watchers have been
		860	created, so it is possible to e.g. patch C<@AnyEvent::ISA> or do
		861	other initialisations - see the sources of L<AnyEvent::Strict> or
		862	L<AnyEvent::AIO> to see how this is used.
		863
		864	The most common usage is to create some global watchers, without forcing
		865	event module detection too early, for example, L<AnyEvent::AIO> creates
		866	and installs the global L<IO::AIO> watcher in a C<post_detect> block to
		867	avoid autodetecting the event module at load time.
816		868
817	If called in scalar or list context, then it creates and returns an object	869	If called in scalar or list context, then it creates and returns an object
818	that automatically removes the callback again when it is destroyed. See	870	that automatically removes the callback again when it is destroyed. See
819	L<Coro::BDB> for a case where this is useful.	871	L<Coro::BDB> for a case where this is useful.
820		872
…		…
823	If there are any code references in this array (you can C<push> to it	875	If there are any code references in this array (you can C<push> to it
824	before or after loading AnyEvent), then they will called directly after	876	before or after loading AnyEvent), then they will called directly after
825	the event loop has been chosen.	877	the event loop has been chosen.
826		878
827	You should check C<$AnyEvent::MODEL> before adding to this array, though:	879	You should check C<$AnyEvent::MODEL> before adding to this array, though:
828	if it contains a true value then the event loop has already been detected,	880	if it is defined then the event loop has already been detected, and the
829	and the array will be ignored.	881	array will be ignored.
830		882
831	Best use C<AnyEvent::post_detect { BLOCK }> instead.	883	Best use C<AnyEvent::post_detect { BLOCK }> when your application allows
		884	it,as it takes care of these details.
		885
		886	This variable is mainly useful for modules that can do something useful
		887	when AnyEvent is used and thus want to know when it is initialised, but do
		888	not need to even load it by default. This array provides the means to hook
		889	into AnyEvent passively, without loading it.
832		890
833	=back	891	=back
834		892
835	=head1 WHAT TO DO IN A MODULE	893	=head1 WHAT TO DO IN A MODULE
836		894
…		…
891		949
892		950
893	=head1 OTHER MODULES	951	=head1 OTHER MODULES
894		952
895	The following is a non-exhaustive list of additional modules that use	953	The following is a non-exhaustive list of additional modules that use
896	AnyEvent and can therefore be mixed easily with other AnyEvent modules	954	AnyEvent as a client and can therefore be mixed easily with other AnyEvent
897	in the same program. Some of the modules come with AnyEvent, some are	955	modules and other event loops in the same program. Some of the modules
898	available via CPAN.	956	come with AnyEvent, most are available via CPAN.
899		957
900	=over 4	958	=over 4
901		959
902	=item L<AnyEvent::Util>	960	=item L<AnyEvent::Util>
903		961
…		…
912		970
913	=item L<AnyEvent::Handle>	971	=item L<AnyEvent::Handle>
914		972
915	Provide read and write buffers, manages watchers for reads and writes,	973	Provide read and write buffers, manages watchers for reads and writes,
916	supports raw and formatted I/O, I/O queued and fully transparent and	974	supports raw and formatted I/O, I/O queued and fully transparent and
917	non-blocking SSL/TLS.	975	non-blocking SSL/TLS (via L<AnyEvent::TLS>.
918		976
919	=item L<AnyEvent::DNS>	977	=item L<AnyEvent::DNS>
920		978
921	Provides rich asynchronous DNS resolver capabilities.	979	Provides rich asynchronous DNS resolver capabilities.
922		980
…		…
950		1008
951	=item L<AnyEvent::GPSD>	1009	=item L<AnyEvent::GPSD>
952		1010
953	A non-blocking interface to gpsd, a daemon delivering GPS information.	1011	A non-blocking interface to gpsd, a daemon delivering GPS information.
954		1012
		1013	=item L<AnyEvent::IRC>
		1014
		1015	AnyEvent based IRC client module family (replacing the older Net::IRC3).
		1016
		1017	=item L<AnyEvent::XMPP>
		1018
		1019	AnyEvent based XMPP (Jabber protocol) module family (replacing the older
		1020	Net::XMPP2>.
		1021
955	=item L<AnyEvent::IGS>	1022	=item L<AnyEvent::IGS>
956		1023
957	A non-blocking interface to the Internet Go Server protocol (used by	1024	A non-blocking interface to the Internet Go Server protocol (used by
958	L<App::IGS>).	1025	L<App::IGS>).
959		1026
960	=item L<AnyEvent::IRC>
961
962	AnyEvent based IRC client module family (replacing the older Net::IRC3).
963
964	=item L<Net::XMPP2>
965
966	AnyEvent based XMPP (Jabber protocol) module family.
967
968	=item L<Net::FCP>	1027	=item L<Net::FCP>
969		1028
970	AnyEvent-based implementation of the Freenet Client Protocol, birthplace	1029	AnyEvent-based implementation of the Freenet Client Protocol, birthplace
971	of AnyEvent.	1030	of AnyEvent.
972		1031
…		…
976		1035
977	=item L<Coro>	1036	=item L<Coro>
978		1037
979	Has special support for AnyEvent via L<Coro::AnyEvent>.	1038	Has special support for AnyEvent via L<Coro::AnyEvent>.
980		1039
981	=item L<IO::Lambda>
982
983	The lambda approach to I/O - don't ask, look there. Can use AnyEvent.
984
985	=back	1040	=back
986		1041
987	=cut	1042	=cut
988		1043
989	package AnyEvent;	1044	package AnyEvent;
990		1045
991	no warnings;	1046	no warnings;
992	use strict qw(vars subs);	1047	use strict qw(vars subs);
993		1048
994	use Carp;	1049	use Carp ();
995		1050
996	our $VERSION = 4.8;	1051	our $VERSION = 4.83;
997	our $MODEL;	1052	our $MODEL;
998		1053
999	our $AUTOLOAD;	1054	our $AUTOLOAD;
1000	our @ISA;	1055	our @ISA;
1001		1056
1002	our @REGISTRY;	1057	our @REGISTRY;
1003		1058
1004	our $WIN32;	1059	our $WIN32;
		1060
		1061	our $VERBOSE;
1005		1062
1006	BEGIN {	1063	BEGIN {
1007	eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }";	1064	eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }";
1008	eval "sub TAINT(){ " . (${^TAINT}*1) . " }";	1065	eval "sub TAINT(){ " . (${^TAINT}*1) . " }";
1009		1066
1010	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}	1067	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1011	if ${^TAINT};	1068	if ${^TAINT};
1012	}
1013		1069
1014	our $verbose = $ENV{PERL_ANYEVENT_VERBOSE}*1;	1070	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
		1071
		1072	}
		1073
		1074	our $MAX_SIGNAL_LATENCY = 10;
1015		1075
1016	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred	1076	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred
1017		1077
1018	{	1078	{
1019	my $idx;	1079	my $idx;
…		…
1027	[Event:: => AnyEvent::Impl::Event::],	1087	[Event:: => AnyEvent::Impl::Event::],
1028	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl::],	1088	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl::],
1029	# everything below here will not be autoprobed	1089	# everything below here will not be autoprobed
1030	# as the pureperl backend should work everywhere	1090	# as the pureperl backend should work everywhere
1031	# and is usually faster	1091	# and is usually faster
1032	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1033	[Glib:: => AnyEvent::Impl::Glib::], # becomes extremely slow with many watchers	1092	[Glib:: => AnyEvent::Impl::Glib::], # becomes extremely slow with many watchers
1034	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1093	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
		1094	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1035	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1095	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1036	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1096	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1037	[Wx:: => AnyEvent::Impl::POE::],	1097	[Wx:: => AnyEvent::Impl::POE::],
1038	[Prima:: => AnyEvent::Impl::POE::],	1098	[Prima:: => AnyEvent::Impl::POE::],
1039	# IO::Async is just too broken - we would need workaorunds for its	1099	# IO::Async is just too broken - we would need workarounds for its
1040	# byzantine signal and broken child handling, among others.	1100	# byzantine signal and broken child handling, among others.
1041	# IO::Async is rather hard to detect, as it doesn't have any	1101	# IO::Async is rather hard to detect, as it doesn't have any
1042	# obvious default class.	1102	# obvious default class.
1043	# [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program	1103	# [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program
1044	# [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program	1104	# [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program
…		…
1077		1137
1078	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1138	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {
1079	my $model = "AnyEvent::Impl::$1";	1139	my $model = "AnyEvent::Impl::$1";
1080	if (eval "require $model") {	1140	if (eval "require $model") {
1081	$MODEL = $model;	1141	$MODEL = $model;
1082	warn "AnyEvent: loaded model '$model' (forced by \$PERL_ANYEVENT_MODEL), using it.\n" if $verbose > 1;	1142	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;
1083	} else {	1143	} else {
1084	warn "AnyEvent: unable to load model '$model' (from \$PERL_ANYEVENT_MODEL):\n$@" if $verbose;	1144	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;
1085	}	1145	}
1086	}	1146	}
1087		1147
1088	# check for already loaded models	1148	# check for already loaded models
1089	unless ($MODEL) {	1149	unless ($MODEL) {
1090	for (@REGISTRY, @models) {	1150	for (@REGISTRY, @models) {
1091	my ($package, $model) = @$_;	1151	my ($package, $model) = @$_;
1092	if (${"$package\::VERSION"} > 0) {	1152	if (${"$package\::VERSION"} > 0) {
1093	if (eval "require $model") {	1153	if (eval "require $model") {
1094	$MODEL = $model;	1154	$MODEL = $model;
1095	warn "AnyEvent: autodetected model '$model', using it.\n" if $verbose > 1;	1155	warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2;
1096	last;	1156	last;
1097	}	1157	}
1098	}	1158	}
1099	}	1159	}
1100		1160
…		…
1105	my ($package, $model) = @$_;	1165	my ($package, $model) = @$_;
1106	if (eval "require $package"	1166	if (eval "require $package"
1107	and ${"$package\::VERSION"} > 0	1167	and ${"$package\::VERSION"} > 0
1108	and eval "require $model") {	1168	and eval "require $model") {
1109	$MODEL = $model;	1169	$MODEL = $model;
1110	warn "AnyEvent: autoprobed model '$model', using it.\n" if $verbose > 1;	1170	warn "AnyEvent: autoprobed model '$model', using it.\n" if $VERBOSE >= 2;
1111	last;	1171	last;
1112	}	1172	}
1113	}	1173	}
1114		1174
1115	$MODEL	1175	$MODEL
…		…
1131		1191
1132	sub AUTOLOAD {	1192	sub AUTOLOAD {
1133	(my $func = $AUTOLOAD) =~ s/.*://;	1193	(my $func = $AUTOLOAD) =~ s/.*://;
1134		1194
1135	$method{$func}	1195	$method{$func}
1136	or croak "$func: not a valid method for AnyEvent objects";	1196	or Carp::croak "$func: not a valid method for AnyEvent objects";
1137		1197
1138	detect unless $MODEL;	1198	detect unless $MODEL;
1139		1199
1140	my $class = shift;	1200	my $class = shift;
1141	$class->$func (@_);	1201	$class->$func (@_);
…		…
1146	# allow only one watcher per fd, so we dup it to get a different one).	1206	# allow only one watcher per fd, so we dup it to get a different one).
1147	sub _dupfh($$;$$) {	1207	sub _dupfh($$;$$) {
1148	my ($poll, $fh, $r, $w) = @_;	1208	my ($poll, $fh, $r, $w) = @_;
1149		1209
1150	# cygwin requires the fh mode to be matching, unix doesn't	1210	# cygwin requires the fh mode to be matching, unix doesn't
1151	my ($rw, $mode) = $poll eq "r" ? ($r, "<")	1211	my ($rw, $mode) = $poll eq "r" ? ($r, "<&") : ($w, ">&");
1152	: $poll eq "w" ? ($w, ">")
1153	: Carp::croak "AnyEvent->io requires poll set to either 'r' or 'w'";
1154		1212
1155	open my $fh2, "$mode&" . fileno $fh	1213	open my $fh2, $mode, $fh
1156	or die "cannot dup() filehandle: $!,";	1214	or die "AnyEvent->io: cannot dup() filehandle in mode '$poll': $!,";
1157		1215
1158	# we assume CLOEXEC is already set by perl in all important cases	1216	# we assume CLOEXEC is already set by perl in all important cases
1159		1217
1160	($fh2, $rw)	1218	($fh2, $rw)
1161	}	1219	}
1162		1220
1163	package AnyEvent::Base;	1221	package AnyEvent::Base;
1164		1222
1165	# default implementations for many methods	1223	# default implementations for many methods
1166		1224
1167	BEGIN {	1225	sub _time {
		1226	# probe for availability of Time::HiRes
1168	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1227	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
		1228	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;
1169	*_time = \&Time::HiRes::time;	1229	*_time = \&Time::HiRes::time;
1170	# if (eval "use POSIX (); (POSIX::times())...	1230	# if (eval "use POSIX (); (POSIX::times())...
1171	} else {	1231	} else {
		1232	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;
1172	*_time = sub { time }; # epic fail	1233	*_time = sub { time }; # epic fail
1173	}	1234	}
		1235
		1236	&_time
1174	}	1237	}
1175		1238
1176	sub time { _time }	1239	sub time { _time }
1177	sub now { _time }	1240	sub now { _time }
1178	sub now_update { }	1241	sub now_update { }
…		…
1183	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"	1246	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
1184	}	1247	}
1185		1248
1186	# default implementation for ->signal	1249	# default implementation for ->signal
1187		1250
		1251	our $HAVE_ASYNC_INTERRUPT;
1188	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);	1252	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);
		1253	our (%SIG_ASY, %SIG_ASY_W);
		1254	our ($SIG_COUNT, $SIG_TW);
1189		1255
1190	sub _signal_exec {	1256	sub _signal_exec {
		1257	$HAVE_ASYNC_INTERRUPT
		1258	? $SIGPIPE_R->drain
1191	sysread $SIGPIPE_R, my $dummy, 4;	1259	: sysread $SIGPIPE_R, my $dummy, 9;
1192		1260
1193	while (%SIG_EV) {	1261	while (%SIG_EV) {
1194	for (keys %SIG_EV) {	1262	for (keys %SIG_EV) {
1195	delete $SIG_EV{$_};	1263	delete $SIG_EV{$_};
1196	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1264	$_->() for values %{ $SIG_CB{$_} \|\| {} };
1197	}	1265	}
1198	}	1266	}
1199	}	1267	}
1200		1268
		1269	sub _signal {
		1270	my (undef, %arg) = @_;
		1271
		1272	my $signal = uc $arg{signal}
		1273	or Carp::croak "required option 'signal' is missing";
		1274
		1275	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
		1276
		1277	if ($HAVE_ASYNC_INTERRUPT) {
		1278	# async::interrupt
		1279
		1280	$SIG_ASY{$signal} \|\|= do {
		1281	my $asy = new Async::Interrupt
		1282	cb => sub { undef $SIG_EV{$signal} },
		1283	signal => $signal,
		1284	pipe => [$SIGPIPE_R->filenos],
		1285	;
		1286	$asy->pipe_autodrain (0);
		1287
		1288	$asy
		1289	};
		1290
		1291	} else {
		1292	# pure perl
		1293
		1294	$SIG{$signal} \|\|= sub {
		1295	local $!;
		1296	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;
		1297	undef $SIG_EV{$signal};
		1298	};
		1299
		1300	# can't do signal processing without introducing races in pure perl,
		1301	# so limit the signal latency.
		1302	++$SIG_COUNT;
		1303	$SIG_TW \|\|= AnyEvent->timer (
		1304	after => $MAX_SIGNAL_LATENCY,
		1305	interval => $MAX_SIGNAL_LATENCY,
		1306	cb => sub { }, # just for the PERL_ASYNC_CHECK
		1307	);
		1308	}
		1309
		1310	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"
		1311	}
		1312
1201	sub signal {	1313	sub signal {
1202	my (undef, %arg) = @_;	1314	# probe for availability of Async::Interrupt
		1315	if (!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} && eval "use Async::Interrupt 0.6 (); 1") {
		1316	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;
1203		1317
1204	unless ($SIGPIPE_R) {	1318	$HAVE_ASYNC_INTERRUPT = 1;
		1319	$SIGPIPE_R = new Async::Interrupt::EventPipe;
		1320	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec);
		1321
		1322	} else {
		1323	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;
		1324
1205	require Fcntl;	1325	require Fcntl;
1206		1326
1207	if (AnyEvent::WIN32) {	1327	if (AnyEvent::WIN32) {
1208	require AnyEvent::Util;	1328	require AnyEvent::Util;
1209		1329
…		…
1224	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";	1344	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
1225		1345
1226	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec);	1346	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec);
1227	}	1347	}
1228		1348
1229	my $signal = uc $arg{signal}	1349	*signal = \&_signal;
1230	or Carp::croak "required option 'signal' is missing";	1350	&signal
1231
1232	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
1233	$SIG{$signal} \|\|= sub {
1234	local $!;
1235	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;
1236	undef $SIG_EV{$signal};
1237	};
1238
1239	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"
1240	}	1351	}
1241		1352
1242	sub AnyEvent::Base::signal::DESTROY {	1353	sub AnyEvent::Base::signal::DESTROY {
1243	my ($signal, $cb) = @{$_[0]};	1354	my ($signal, $cb) = @{$_[0]};
		1355
		1356	undef $SIG_TW
		1357	unless --$SIG_COUNT;
1244		1358
1245	delete $SIG_CB{$signal}{$cb};	1359	delete $SIG_CB{$signal}{$cb};
1246		1360
1247	# delete doesn't work with older perls - they then	1361	# delete doesn't work with older perls - they then
1248	# print weird messages, or just unconditionally exit	1362	# print weird messages, or just unconditionally exit
1249	# instead of getting the default action.	1363	# instead of getting the default action.
		1364	undef $SIG{$signal}
1250	undef $SIG{$signal} unless keys %{ $SIG_CB{$signal} };	1365	unless keys %{ $SIG_CB{$signal} };
1251	}	1366	}
1252		1367
1253	# default implementation for ->child	1368	# default implementation for ->child
1254		1369
1255	our %PID_CB;	1370	our %PID_CB;
…		…
1257	our $CHLD_DELAY_W;	1372	our $CHLD_DELAY_W;
1258	our $WNOHANG;	1373	our $WNOHANG;
1259		1374
1260	sub _sigchld {	1375	sub _sigchld {
1261	while (0 < (my $pid = waitpid -1, $WNOHANG)) {	1376	while (0 < (my $pid = waitpid -1, $WNOHANG)) {
		1377	$_->($pid, $?)
1262	$_->($pid, $?) for (values %{ $PID_CB{$pid} \|\| {} }),	1378	for values %{ $PID_CB{$pid} \|\| {} },
1263	(values %{ $PID_CB{0} \|\| {} });	1379	values %{ $PID_CB{0} \|\| {} };
1264	}	1380	}
1265	}	1381	}
1266		1382
1267	sub child {	1383	sub child {
1268	my (undef, %arg) = @_;	1384	my (undef, %arg) = @_;
…		…
1336		1452
1337	use overload	1453	use overload
1338	'&{}' => sub { my $self = shift; sub { $self->send (@_) } },	1454	'&{}' => sub { my $self = shift; sub { $self->send (@_) } },
1339	fallback => 1;	1455	fallback => 1;
1340		1456
		1457	our $WAITING;
		1458
1341	sub _send {	1459	sub _send {
1342	# nop	1460	# nop
1343	}	1461	}
1344		1462
1345	sub send {	1463	sub send {
…		…
1357	sub ready {	1475	sub ready {
1358	$_[0]{_ae_sent}	1476	$_[0]{_ae_sent}
1359	}	1477	}
1360		1478
1361	sub _wait {	1479	sub _wait {
		1480	$WAITING
		1481	and !$_[0]{_ae_sent}
		1482	and Carp::croak "AnyEvent::CondVar: recursive blocking wait detected";
		1483
		1484	local $WAITING = 1;
1362	AnyEvent->one_event while !$_[0]{_ae_sent};	1485	AnyEvent->one_event while !$_[0]{_ae_sent};
1363	}	1486	}
1364		1487
1365	sub recv {	1488	sub recv {
1366	$_[0]->_wait;	1489	$_[0]->_wait;
…		…
2060		2183
2061	A handler for C<SIGCHLD> is installed by AnyEvent's child watcher	2184	A handler for C<SIGCHLD> is installed by AnyEvent's child watcher
2062	emulation for event loops that do not support them natively. Also, some	2185	emulation for event loops that do not support them natively. Also, some
2063	event loops install a similar handler.	2186	event loops install a similar handler.
2064		2187
2065	If, when AnyEvent is loaded, SIGCHLD is set to IGNORE, then AnyEvent will	2188	Additionally, when AnyEvent is loaded and SIGCHLD is set to IGNORE, then
2066	reset it to default, to avoid losing child exit statuses.	2189	AnyEvent will reset it to default, to avoid losing child exit statuses.
2067		2190
2068	=item SIGPIPE	2191	=item SIGPIPE
2069		2192
2070	A no-op handler is installed for C<SIGPIPE> when C<$SIG{PIPE}> is C<undef>	2193	A no-op handler is installed for C<SIGPIPE> when C<$SIG{PIPE}> is C<undef>
2071	when AnyEvent gets loaded.	2194	when AnyEvent gets loaded.
…		…
2089	if $SIG{CHLD} eq 'IGNORE';	2212	if $SIG{CHLD} eq 'IGNORE';
2090		2213
2091	$SIG{PIPE} = sub { }	2214	$SIG{PIPE} = sub { }
2092	unless defined $SIG{PIPE};	2215	unless defined $SIG{PIPE};
2093		2216
		2217	=head1 RECOMMENDED/OPTIONAL MODULES
		2218
		2219	One of AnyEvent's main goals is to be 100% Pure-Perl(tm): only perl (and
		2220	it's built-in modules) are required to use it.
		2221
		2222	That does not mean that AnyEvent won't take advantage of some additional
		2223	modules if they are installed.
		2224
		2225	This section epxlains which additional modules will be used, and how they
		2226	affect AnyEvent's operetion.
		2227
		2228	=over 4
		2229
		2230	=item L<Async::Interrupt>
		2231
		2232	This slightly arcane module is used to implement fast signal handling: To
		2233	my knowledge, there is no way to do completely race-free and quick
		2234	signal handling in pure perl. To ensure that signals still get
		2235	delivered, AnyEvent will start an interval timer to wake up perl (and
		2236	catch the signals) with soemd elay (default is 10 seconds, look for
		2237	C<$AnyEvent::MAX_SIGNAL_LATENCY>).
		2238
		2239	If this module is available, then it will be used to implement signal
		2240	catching, which means that signals will not be delayed, and the event loop
		2241	will not be interrupted regularly, which is more efficient (And good for
		2242	battery life on laptops).
		2243
		2244	This affects not just the pure-perl event loop, but also other event loops
		2245	that have no signal handling on their own (e.g. Glib, Tk, Qt).
		2246
		2247	=item L<EV>
		2248
		2249	This module isn't really "optional", as it is simply one of the backend
		2250	event loops that AnyEvent can use. However, it is simply the best event
		2251	loop available in terms of features, speed and stability: It supports
		2252	the AnyEvent API optimally, implements all the watcher types in XS, does
		2253	automatic timer adjustments even when no monotonic clock is available,
		2254	can take avdantage of advanced kernel interfaces such as C<epoll> and
		2255	C<kqueue>, and is the fastest backend I<by far>. You can even embed
		2256	L<Glib>/L<Gtk2> in it (or vice versa, see L<EV::Glib> and L<Glib::EV>).
		2257
		2258	=item L<Guard>
		2259
		2260	The guard module, when used, will be used to implement
		2261	C<AnyEvent::Util::guard>. This speeds up guards considerably (and uses a
		2262	lot less memory), but otherwise doesn't affect guard operation much. It is
		2263	purely used for performance.
		2264
		2265	=item L<JSON> and L<JSON::XS>
		2266
		2267	This module is required when you want to read or write JSON data via
		2268	L<AnyEvent::Handle>. It is also written in pure-perl, but can take
		2269	advantage of the ulta-high-speed L<JSON::XS> module when it is installed.
		2270
		2271	In fact, L<AnyEvent::Handle> will use L<JSON::XS> by default if it is
		2272	installed.
		2273
		2274	=item L<Net::SSLeay>
		2275
		2276	Implementing TLS/SSL in Perl is certainly interesting, but not very
		2277	worthwhile: If this module is installed, then L<AnyEvent::Handle> (with
		2278	the help of L<AnyEvent::TLS>), gains the ability to do TLS/SSL.
		2279
		2280	=item L<Time::HiRes>
		2281
		2282	This module is part of perl since release 5.008. It will be used when the
		2283	chosen event library does not come with a timing source on it's own. The
		2284	pure-perl event loop (L<AnyEvent::Impl::Perl>) will additionally use it to
		2285	try to use a monotonic clock for timing stability.
		2286
		2287	=back
		2288
		2289
2094	=head1 FORK	2290	=head1 FORK
2095		2291
2096	Most event libraries are not fork-safe. The ones who are usually are	2292	Most event libraries are not fork-safe. The ones who are usually are
2097	because they rely on inefficient but fork-safe C<select> or C<poll>	2293	because they rely on inefficient but fork-safe C<select> or C<poll>
2098	calls. Only L<EV> is fully fork-aware.	2294	calls. Only L<EV> is fully fork-aware.
2099		2295
2100	If you have to fork, you must either do so I<before> creating your first	2296	If you have to fork, you must either do so I<before> creating your first
2101	watcher OR you must not use AnyEvent at all in the child.	2297	watcher OR you must not use AnyEvent at all in the child OR you must do
		2298	something completely out of the scope of AnyEvent.
2102		2299
2103		2300
2104	=head1 SECURITY CONSIDERATIONS	2301	=head1 SECURITY CONSIDERATIONS
2105		2302
2106	AnyEvent can be forced to load any event model via	2303	AnyEvent can be forced to load any event model via
…		…
2144	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2341	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.
2145		2342
2146	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2343	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2147	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2344	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2148	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2345	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2149	L<AnyEvent::Impl::POE>.	2346	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>.
2150		2347
2151	Non-blocking file handles, sockets, TCP clients and	2348	Non-blocking file handles, sockets, TCP clients and
2152	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>.	2349	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2153		2350
2154	Asynchronous DNS: L<AnyEvent::DNS>.	2351	Asynchronous DNS: L<AnyEvent::DNS>.
2155		2352
2156	Coroutine support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>,	2353	Coroutine support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>,
		2354	L<Coro::Event>,
2157		2355
2158	Nontrivial usage examples: L<Net::FCP>, L<Net::XMPP2>, L<AnyEvent::DNS>.	2356	Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::XMPP>,
		2357	L<AnyEvent::HTTP>.
2159		2358
2160		2359
2161	=head1 AUTHOR	2360	=head1 AUTHOR
2162		2361
2163	Marc Lehmann <schmorp@schmorp.de>	2362	Marc Lehmann <schmorp@schmorp.de>

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Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.228 by root, Wed Jul 8 01:11:12 2009 UTC vs. Revision 1.242 by root, Fri Jul 17 22:05:12 2009 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.228 by root, Wed Jul 8 01:11:12 2009 UTC vs.
Revision 1.242 by root, Fri Jul 17 22:05:12 2009 UTC