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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.332 by root, Tue Aug 31 23:32:40 2010 UTC vs.
Revision 1.384 by root, Mon Sep 5 07:21:54 2011 UTC

…		…
1	=head1 NAME	1	=head1 NAME
2		2
3	AnyEvent - the DBI of event loop programming	3	AnyEvent - the DBI of event loop programming
4		4
5	EV, Event, Glib, Tk, Perl, Event::Lib, Irssi, rxvt-unicode, IO::Async, Qt	5	EV, Event, Glib, Tk, Perl, Event::Lib, Irssi, rxvt-unicode, IO::Async, Qt,
6	and POE are various supported event loops/environments.	6	FLTK 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
46	in a tutorial or some gentle introduction, have a look at the	46	in a tutorial or some gentle introduction, have a look at the
47	L<AnyEvent::Intro> manpage.	47	L<AnyEvent::Intro> manpage.
48		48
49	=head1 SUPPORT	49	=head1 SUPPORT
50		50
		51	An FAQ document is available as L<AnyEvent::FAQ>.
		52
51	There is a mailinglist for discussing all things AnyEvent, and an IRC	53	There also is a mailinglist for discussing all things AnyEvent, and an IRC
52	channel, too.	54	channel, too.
53		55
54	See the AnyEvent project page at the B<Schmorpforge Ta-Sa Software	56	See the AnyEvent project page at the B<Schmorpforge Ta-Sa Software
55	Repository>, at L<http://anyevent.schmorp.de>, for more info.	57	Repository>, at L<http://anyevent.schmorp.de>, for more info.
56		58
…		…
83	that isn't them. What's worse, all the potential users of your	85	that isn't them. What's worse, all the potential users of your
84	module are I<also> forced to use the same event loop you use.	86	module are I<also> forced to use the same event loop you use.
85		87
86	AnyEvent is different: AnyEvent + POE works fine. AnyEvent + Glib works	88	AnyEvent is different: AnyEvent + POE works fine. AnyEvent + Glib works
87	fine. AnyEvent + Tk works fine etc. etc. but none of these work together	89	fine. AnyEvent + Tk works fine etc. etc. but none of these work together
88	with the rest: POE + IO::Async? No go. Tk + Event? No go. Again: if	90	with the rest: POE + EV? No go. Tk + Event? No go. Again: if your module
89	your module uses one of those, every user of your module has to use it,	91	uses one of those, every user of your module has to use it, too. But if
90	too. But if your module uses AnyEvent, it works transparently with all	92	your module uses AnyEvent, it works transparently with all event models it
91	event models it supports (including stuff like IO::Async, as long as those	93	supports (including stuff like IO::Async, as long as those use one of the
92	use one of the supported event loops. It is easy to add new event loops	94	supported event loops. It is easy to add new event loops to AnyEvent, too,
93	to AnyEvent, too, so it is future-proof).	95	so it is future-proof).
94		96
95	In addition to being free of having to use I<the one and only true event	97	In addition to being free of having to use I<the one and only true event
96	model>, AnyEvent also is free of bloat and policy: with POE or similar	98	model>, AnyEvent also is free of bloat and policy: with POE or similar
97	modules, you get an enormous amount of code and strict rules you have to	99	modules, you get an enormous amount of code and strict rules you have to
98	follow. AnyEvent, on the other hand, is lean and to the point, by only	100	follow. AnyEvent, on the other hand, is lean and to the point, by only
…		…
119	The interface itself is vaguely similar, but not identical to the L<Event>	121	The interface itself is vaguely similar, but not identical to the L<Event>
120	module.	122	module.
121		123
122	During the first call of any watcher-creation method, the module tries	124	During the first call of any watcher-creation method, the module tries
123	to detect the currently loaded event loop by probing whether one of the	125	to detect the currently loaded event loop by probing whether one of the
124	following modules is already loaded: L<EV>, L<AnyEvent::Impl::Perl>,	126	following modules is already loaded: L<EV>, L<AnyEvent::Loop>,
125	L<Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. The first one	127	L<Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. The first one
126	found is used. If none are detected, the module tries to load the first	128	found is used. If none are detected, the module tries to load the first
127	four modules in the order given; but note that if L<EV> is not	129	four modules in the order given; but note that if L<EV> is not
128	available, the pure-perl L<AnyEvent::Impl::Perl> should always work, so	130	available, the pure-perl L<AnyEvent::Loop> should always work, so
129	the other two are not normally tried.	131	the other two are not normally tried.
130		132
131	Because AnyEvent first checks for modules that are already loaded, loading	133	Because AnyEvent first checks for modules that are already loaded, loading
132	an event model explicitly before first using AnyEvent will likely make	134	an event model explicitly before first using AnyEvent will likely make
133	that model the default. For example:	135	that model the default. For example:
…		…
140	The I<likely> means that, if any module loads another event model and	142	The I<likely> means that, if any module loads another event model and
141	starts using it, all bets are off - this case should be very rare though,	143	starts using it, all bets are off - this case should be very rare though,
142	as very few modules hardcode event loops without announcing this very	144	as very few modules hardcode event loops without announcing this very
143	loudly.	145	loudly.
144		146
145	The pure-perl implementation of AnyEvent is called	147	The pure-perl implementation of AnyEvent is called C<AnyEvent::Loop>. Like
146	C<AnyEvent::Impl::Perl>. Like other event modules you can load it	148	other event modules you can load it explicitly and enjoy the high
147	explicitly and enjoy the high availability of that event loop :)	149	availability of that event loop :)
148		150
149	=head1 WATCHERS	151	=head1 WATCHERS
150		152
151	AnyEvent has the central concept of a I<watcher>, which is an object that	153	AnyEvent has the central concept of a I<watcher>, which is an object that
152	stores relevant data for each kind of event you are waiting for, such as	154	stores relevant data for each kind of event you are waiting for, such as
…		…
354	difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into	356	difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into
355	account.	357	account.
356		358
357	=item AnyEvent->now_update	359	=item AnyEvent->now_update
358		360
359	Some event loops (such as L<EV> or L<AnyEvent::Impl::Perl>) cache	361	Some event loops (such as L<EV> or L<AnyEvent::Loop>) cache the current
360	the current time for each loop iteration (see the discussion of L<<	362	time for each loop iteration (see the discussion of L<< AnyEvent->now >>,
361	AnyEvent->now >>, above).	363	above).
362		364
363	When a callback runs for a long time (or when the process sleeps), then	365	When a callback runs for a long time (or when the process sleeps), then
364	this "current" time will differ substantially from the real time, which	366	this "current" time will differ substantially from the real time, which
365	might affect timers and time-outs.	367	might affect timers and time-outs.
366		368
…		…
480	thing in an AnyEvent program, you I<have> to create at least one	482	thing in an AnyEvent program, you I<have> to create at least one
481	watcher before you C<fork> the child (alternatively, you can call	483	watcher before you C<fork> the child (alternatively, you can call
482	C<AnyEvent::detect>).	484	C<AnyEvent::detect>).
483		485
484	As most event loops do not support waiting for child events, they will be	486	As most event loops do not support waiting for child events, they will be
485	emulated by AnyEvent in most cases, in which the latency and race problems	487	emulated by AnyEvent in most cases, in which case the latency and race
486	mentioned in the description of signal watchers apply.	488	problems mentioned in the description of signal watchers apply.
487		489
488	Example: fork a process and wait for it	490	Example: fork a process and wait for it
489		491
490	my $done = AnyEvent->condvar;	492	my $done = AnyEvent->condvar;
491		493
…		…
858	use. If EV is not installed, then AnyEvent will fall back to its own	860	use. If EV is not installed, then AnyEvent will fall back to its own
859	pure-perl implementation, which is available everywhere as it comes with	861	pure-perl implementation, which is available everywhere as it comes with
860	AnyEvent itself.	862	AnyEvent itself.
861		863
862	AnyEvent::Impl::EV based on EV (interface to libev, best choice).	864	AnyEvent::Impl::EV based on EV (interface to libev, best choice).
863	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.	865	AnyEvent::Impl::Perl pure-perl AnyEvent::Loop, fast and portable.
864		866
865	=item Backends that are transparently being picked up when they are used.	867	=item Backends that are transparently being picked up when they are used.
866		868
867	These will be used if they are already loaded when the first watcher	869	These will be used if they are already loaded when the first watcher
868	is created, in which case it is assumed that the application is using	870	is created, in which case it is assumed that the application is using
…		…
874	AnyEvent::Impl::Glib based on Glib, slow but very stable.	876	AnyEvent::Impl::Glib based on Glib, slow but very stable.
875	AnyEvent::Impl::Tk based on Tk, very broken.	877	AnyEvent::Impl::Tk based on Tk, very broken.
876	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.	878	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
877	AnyEvent::Impl::POE based on POE, very slow, some limitations.	879	AnyEvent::Impl::POE based on POE, very slow, some limitations.
878	AnyEvent::Impl::Irssi used when running within irssi.	880	AnyEvent::Impl::Irssi used when running within irssi.
		881	AnyEvent::Impl::IOAsync based on IO::Async.
		882	AnyEvent::Impl::Cocoa based on Cocoa::EventLoop.
		883	AnyEvent::Impl::FLTK based on FLTK (fltk 2 binding).
879		884
880	=item Backends with special needs.	885	=item Backends with special needs.
881		886
882	Qt requires the Qt::Application to be instantiated first, but will	887	Qt requires the Qt::Application to be instantiated first, but will
883	otherwise be picked up automatically. As long as the main program	888	otherwise be picked up automatically. As long as the main program
884	instantiates the application before any AnyEvent watchers are created,	889	instantiates the application before any AnyEvent watchers are created,
885	everything should just work.	890	everything should just work.
886		891
887	AnyEvent::Impl::Qt based on Qt.	892	AnyEvent::Impl::Qt based on Qt.
888
889	Support for IO::Async can only be partial, as it is too broken and
890	architecturally limited to even support the AnyEvent API. It also
891	is the only event loop that needs the loop to be set explicitly, so
892	it can only be used by a main program knowing about AnyEvent. See
893	L<AnyEvent::Impl::IOAsync> for the gory details.
894
895	AnyEvent::Impl::IOAsync based on IO::Async, cannot be autoprobed.
896		893
897	=item Event loops that are indirectly supported via other backends.	894	=item Event loops that are indirectly supported via other backends.
898		895
899	Some event loops can be supported via other modules:	896	Some event loops can be supported via other modules:
900		897
…		…
936		933
937	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model	934	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model
938	if necessary. You should only call this function right before you would	935	if necessary. You should only call this function right before you would
939	have created an AnyEvent watcher anyway, that is, as late as possible at	936	have created an AnyEvent watcher anyway, that is, as late as possible at
940	runtime, and not e.g. during initialisation of your module.	937	runtime, and not e.g. during initialisation of your module.
		938
		939	The effect of calling this function is as if a watcher had been created
		940	(specifically, actions that happen "when the first watcher is created"
		941	happen when calling detetc as well).
941		942
942	If you need to do some initialisation before AnyEvent watchers are	943	If you need to do some initialisation before AnyEvent watchers are
943	created, use C<post_detect>.	944	created, use C<post_detect>.
944		945
945	=item $guard = AnyEvent::post_detect { BLOCK }	946	=item $guard = AnyEvent::post_detect { BLOCK }
…		…
1008	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent	1009	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent
1009	# as soon as it is	1010	# as soon as it is
1010	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };	1011	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };
1011	}	1012	}
1012		1013
		1014	=item AnyEvent::postpone { BLOCK }
		1015
		1016	Arranges for the block to be executed as soon as possible, but not before
		1017	the call itself returns. In practise, the block will be executed just
		1018	before the event loop polls for new events, or shortly afterwards.
		1019
		1020	This function never returns anything (to make the C<return postpone { ...
		1021	}> idiom more useful.
		1022
		1023	To understand the usefulness of this function, consider a function that
		1024	asynchronously does something for you and returns some transaction
		1025	object or guard to let you cancel the operation. For example,
		1026	C<AnyEvent::Socket::tcp_connect>:
		1027
		1028	# start a conenction attempt unless one is active
		1029	$self->{connect_guard} \|\|= AnyEvent::Socket::tcp_connect "www.example.net", 80, sub {
		1030	delete $self->{connect_guard};
		1031	...
		1032	};
		1033
		1034	Imagine that this function could instantly call the callback, for
		1035	example, because it detects an obvious error such as a negative port
		1036	number. Invoking the callback before the function returns causes problems
		1037	however: the callback will be called and will try to delete the guard
		1038	object. But since the function hasn't returned yet, there is nothing to
		1039	delete. When the function eventually returns it will assign the guard
		1040	object to C<< $self->{connect_guard} >>, where it will likely never be
		1041	deleted, so the program thinks it is still trying to connect.
		1042
		1043	This is where C<AnyEvent::postpone> should be used. Instead of calling the
		1044	callback directly on error:
		1045
		1046	$cb->(undef), return # signal error to callback, BAD!
		1047	if $some_error_condition;
		1048
		1049	It should use C<postpone>:
		1050
		1051	AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later
		1052	if $some_error_condition;
		1053
		1054	=item AnyEvent::log $level, $msg[, @args]
		1055
		1056	Log the given C<$msg> at the given C<$level>.
		1057
		1058	If L<AnyEvent::Log> is not loaded then this function makes a simple test
		1059	to see whether the message will be logged. If the test succeeds it will
		1060	load AnyEvent::Log and call C<AnyEvent::Log::log> - consequently, look at
		1061	the L<AnyEvent::Log> documentation for details.
		1062
		1063	If the test fails it will simply return. Right now this happens when a
		1064	numerical loglevel is used and it is larger than the level specified via
		1065	C<$ENV{PERL_ANYEVENT_VERBOSE}>.
		1066
		1067	If you want to sprinkle loads of logging calls around your code, consider
		1068	creating a logger callback with the C<AnyEvent::Log::logger> function,
		1069	which can reduce typing, codesize and can reduce the logging overhead
		1070	enourmously.
		1071
1013	=back	1072	=back
1014		1073
1015	=head1 WHAT TO DO IN A MODULE	1074	=head1 WHAT TO DO IN A MODULE
1016		1075
1017	As a module author, you should C<use AnyEvent> and call AnyEvent methods	1076	As a module author, you should C<use AnyEvent> and call AnyEvent methods
…		…
1050	modules might create watchers when they are loaded, and AnyEvent will	1109	modules might create watchers when they are loaded, and AnyEvent will
1051	decide on the event model to use as soon as it creates watchers, and it	1110	decide on the event model to use as soon as it creates watchers, and it
1052	might choose the wrong one unless you load the correct one yourself.	1111	might choose the wrong one unless you load the correct one yourself.
1053		1112
1054	You can chose to use a pure-perl implementation by loading the	1113	You can chose to use a pure-perl implementation by loading the
1055	C<AnyEvent::Impl::Perl> module, which gives you similar behaviour	1114	C<AnyEvent::Loop> module, which gives you similar behaviour
1056	everywhere, but letting AnyEvent chose the model is generally better.	1115	everywhere, but letting AnyEvent chose the model is generally better.
1057		1116
1058	=head2 MAINLOOP EMULATION	1117	=head2 MAINLOOP EMULATION
1059		1118
1060	Sometimes (often for short test scripts, or even standalone programs who	1119	Sometimes (often for short test scripts, or even standalone programs who
…		…
1073		1132
1074		1133
1075	=head1 OTHER MODULES	1134	=head1 OTHER MODULES
1076		1135
1077	The following is a non-exhaustive list of additional modules that use	1136	The following is a non-exhaustive list of additional modules that use
1078	AnyEvent as a client and can therefore be mixed easily with other AnyEvent	1137	AnyEvent as a client and can therefore be mixed easily with other
1079	modules and other event loops in the same program. Some of the modules	1138	AnyEvent modules and other event loops in the same program. Some of the
1080	come as part of AnyEvent, the others are available via CPAN.	1139	modules come as part of AnyEvent, the others are available via CPAN (see
		1140	L<http://search.cpan.org/search?m=module&q=anyevent%3A%3A*> for
		1141	a longer non-exhaustive list), and the list is heavily biased towards
		1142	modules of the AnyEvent author himself :)
1081		1143
1082	=over 4	1144	=over 4
1083		1145
1084	=item L<AnyEvent::Util>	1146	=item L<AnyEvent::Util>
1085		1147
…		…
1105	=item L<AnyEvent::HTTP>, L<AnyEvent::IRC>, L<AnyEvent::XMPP>, L<AnyEvent::GPSD>, L<AnyEvent::IGS>, L<AnyEvent::FCP>	1167	=item L<AnyEvent::HTTP>, L<AnyEvent::IRC>, L<AnyEvent::XMPP>, L<AnyEvent::GPSD>, L<AnyEvent::IGS>, L<AnyEvent::FCP>
1106		1168
1107	Implement event-based interfaces to the protocols of the same name (for	1169	Implement event-based interfaces to the protocols of the same name (for
1108	the curious, IGS is the International Go Server and FCP is the Freenet	1170	the curious, IGS is the International Go Server and FCP is the Freenet
1109	Client Protocol).	1171	Client Protocol).
1110
1111	=item L<AnyEvent::Handle::UDP>
1112
1113	Here be danger!
1114
1115	As Pauli would put it, "Not only is it not right, it's not even wrong!" -
1116	there are so many things wrong with AnyEvent::Handle::UDP, most notably
1117	its use of a stream-based API with a protocol that isn't streamable, that
1118	the only way to improve it is to delete it.
1119
1120	It features data corruption (but typically only under load) and general
1121	confusion. On top, the author is not only clueless about UDP but also
1122	fact-resistant - some gems of his understanding: "connect doesn't work
1123	with UDP", "UDP packets are not IP packets", "UDP only has datagrams, not
1124	packets", "I don't need to implement proper error checking as UDP doesn't
1125	support error checking" and so on - he doesn't even understand what's
1126	wrong with his module when it is explained to him.
1127
1128	=item L<AnyEvent::DBI>
1129
1130	Executes L<DBI> requests asynchronously in a proxy process for you,
1131	notifying you in an event-based way when the operation is finished.
1132		1172
1133	=item L<AnyEvent::AIO>	1173	=item L<AnyEvent::AIO>
1134		1174
1135	Truly asynchronous (as opposed to non-blocking) I/O, should be in the	1175	Truly asynchronous (as opposed to non-blocking) I/O, should be in the
1136	toolbox of every event programmer. AnyEvent::AIO transparently fuses	1176	toolbox of every event programmer. AnyEvent::AIO transparently fuses
1137	L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based	1177	L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based
1138	file I/O, and much more.	1178	file I/O, and much more.
1139		1179
		1180	=item L<AnyEvent::Filesys::Notify>
		1181
		1182	AnyEvent is good for non-blocking stuff, but it can't detect file or
		1183	path changes (e.g. "watch this directory for new files", "watch this
		1184	file for changes"). The L<AnyEvent::Filesys::Notify> module promises to
		1185	do just that in a portbale fashion, supporting inotify on GNU/Linux and
		1186	some weird, without doubt broken, stuff on OS X to monitor files. It can
		1187	fall back to blocking scans at regular intervals transparently on other
		1188	platforms, so it's about as portable as it gets.
		1189
		1190	(I haven't used it myself, but I haven't heard anybody complaining about
		1191	it yet).
		1192
		1193	=item L<AnyEvent::DBI>
		1194
		1195	Executes L<DBI> requests asynchronously in a proxy process for you,
		1196	notifying you in an event-based way when the operation is finished.
		1197
1140	=item L<AnyEvent::HTTPD>	1198	=item L<AnyEvent::HTTPD>
1141		1199
1142	A simple embedded webserver.	1200	A simple embedded webserver.
1143		1201
1144	=item L<AnyEvent::FastPing>	1202	=item L<AnyEvent::FastPing>
1145		1203
1146	The fastest ping in the west.	1204	The fastest ping in the west.
1147		1205
1148	=item L<Coro>	1206	=item L<Coro>
1149		1207
1150	Has special support for AnyEvent via L<Coro::AnyEvent>.	1208	Has special support for AnyEvent via L<Coro::AnyEvent>, which allows you
		1209	to simply invert the flow control - don't call us, we will call you:
		1210
		1211	async {
		1212	Coro::AnyEvent::sleep 5; # creates a 5s timer and waits for it
		1213	print "5 seconds later!\n";
		1214
		1215	Coro::AnyEvent::readable *STDIN; # uses an I/O watcher
		1216	my $line = <STDIN>; # works for ttys
		1217
		1218	AnyEvent::HTTP::http_get "url", Coro::rouse_cb;
		1219	my ($body, $hdr) = Coro::rouse_wait;
		1220	};
1151		1221
1152	=back	1222	=back
1153		1223
1154	=cut	1224	=cut
1155		1225
1156	package AnyEvent;	1226	package AnyEvent;
1157		1227
1158	# basically a tuned-down version of common::sense	1228	# basically a tuned-down version of common::sense
1159	sub common_sense {	1229	sub common_sense {
1160	# from common:.sense 3.3	1230	# from common:.sense 3.4
1161	${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf3\x0f\xc0\xf0\xfc\x33\x00";	1231	${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf0\x0f\xc0\xf0\xfc\x33\x00";
1162	# use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl)	1232	# use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl)
1163	$^H \|= 0x00000600;	1233	$^H \|= 0x00000600;
1164	}	1234	}
1165		1235
1166	BEGIN { AnyEvent::common_sense }	1236	BEGIN { AnyEvent::common_sense }
1167		1237
1168	use Carp ();	1238	use Carp ();
1169		1239
1170	our $VERSION = '5.271';	1240	our $VERSION = '6.02';
1171	our $MODEL;	1241	our $MODEL;
1172
1173	our $AUTOLOAD;
1174	our @ISA;	1242	our @ISA;
1175
1176	our @REGISTRY;	1243	our @REGISTRY;
1177
1178	our $VERBOSE;	1244	our $VERBOSE;
		1245	our $MAX_SIGNAL_LATENCY = 10;
		1246	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred
1179		1247
1180	BEGIN {	1248	BEGIN {
1181	require "AnyEvent/constants.pl";	1249	require "AnyEvent/constants.pl";
1182		1250
1183	eval "sub TAINT (){" . (${^TAINT}*1) . "}";	1251	eval "sub TAINT (){" . (${^TAINT}*1) . "}";
1184		1252
1185	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}	1253	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1186	if ${^TAINT};	1254	if ${^TAINT};
1187		1255
1188	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;	1256	$ENV{"PERL_ANYEVENT_$_"} = $ENV{"AE_$_"}
		1257	for grep s/^AE_// && !exists $ENV{"PERL_ANYEVENT_$_"}, keys %ENV;
1189		1258
1190	}	1259	@ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = ()
		1260	if ${^TAINT};
1191		1261
1192	our $MAX_SIGNAL_LATENCY = 10;	1262	# $ENV{PERL_ANYEVENT_xxx} now valid
1193		1263
1194	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred	1264	$VERBOSE = length $ENV{PERL_ANYEVENT_VERBOSE} ? $ENV{PERL_ANYEVENT_VERBOSE}*1 : 4;
1195		1265
1196	{
1197	my $idx;	1266	my $idx;
1198	$PROTOCOL{$_} = ++$idx	1267	$PROTOCOL{$_} = ++$idx
1199	for reverse split /\s,\s/,	1268	for reverse split /\s,\s/,
1200	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1269	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1201	}	1270	}
1202		1271
		1272	our @post_detect;
		1273
		1274	sub post_detect(&) {
		1275	my ($cb) = @_;
		1276
		1277	push @post_detect, $cb;
		1278
		1279	defined wantarray
		1280	? bless \$cb, "AnyEvent::Util::postdetect"
		1281	: ()
		1282	}
		1283
		1284	sub AnyEvent::Util::postdetect::DESTROY {
		1285	@post_detect = grep $_ != ${$_[0]}, @post_detect;
		1286	}
		1287
		1288	our $POSTPONE_W;
		1289	our @POSTPONE;
		1290
		1291	sub _postpone_exec {
		1292	undef $POSTPONE_W;
		1293
		1294	&{ shift @POSTPONE }
		1295	while @POSTPONE;
		1296	}
		1297
		1298	sub postpone(&) {
		1299	push @POSTPONE, shift;
		1300
		1301	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
		1302
		1303	()
		1304	}
		1305
		1306	sub log($$;@) {
		1307	# only load the big bloated module when we actually are about to log something
		1308	if ($_[0] <= ($VERBOSE \|\| 1)) { # also catches non-numeric levels(!) and fatal
		1309	require AnyEvent::Log; # among other things, sets $VERBOSE to 9
		1310	# AnyEvent::Log overwrites this function
		1311	goto &log;
		1312	}
		1313
		1314	0 # not logged
		1315	}
		1316
		1317	sub logger($;$) {
		1318	package AnyEvent::Log;
		1319
		1320	my ($level, $renabled) = @_;
		1321
		1322	$$renabled = $level <= $VERBOSE;
		1323
		1324	my $pkg = (caller)[0];
		1325
		1326	my $logger = [$pkg, $level, $renabled];
		1327
		1328	our %LOGGER;
		1329	$LOGGER{$logger+0} = $logger;
		1330
		1331	require AnyEvent::Util;
		1332	my $guard = AnyEvent::Util::guard (sub {
		1333	# "clean up"
		1334	delete $LOGGER{$logger+0};
		1335	});
		1336
		1337	sub {
		1338	return 0 unless $$renabled;
		1339
		1340	$guard if 0; # keep guard alive, but don't cause runtime overhead
		1341	require AnyEvent::Log unless $AnyEvent::Log::VERSION;
		1342	package AnyEvent::Log;
		1343	_log ($logger->[0], $level, @_) # logger->[0] has been converted at load time
		1344	}
		1345	}
		1346
		1347	if (length $ENV{PERL_ANYEVENT_LOG}) {
		1348	require AnyEvent::Log; # AnyEvent::Log does the thing for us
		1349	}
		1350
1203	my @models = (	1351	our @models = (
1204	[EV:: => AnyEvent::Impl::EV:: , 1],	1352	[EV:: => AnyEvent::Impl::EV:: , 1],
1205	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],	1353	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1206	# everything below here will not (normally) be autoprobed	1354	# everything below here will not (normally) be autoprobed
1207	# as the pureperl backend should work everywhere	1355	# as the pure perl backend should work everywhere
1208	# and is usually faster	1356	# and is usually faster
1209	[Event:: => AnyEvent::Impl::Event::, 1],	1357	[Event:: => AnyEvent::Impl::Event::, 1],
1210	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers	1358	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers
1211	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1359	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
1212	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package	1360	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1213	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1361	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1214	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1362	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1215	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1363	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1216	[Wx:: => AnyEvent::Impl::POE::],	1364	[Wx:: => AnyEvent::Impl::POE::],
1217	[Prima:: => AnyEvent::Impl::POE::],	1365	[Prima:: => AnyEvent::Impl::POE::],
1218	# IO::Async is just too broken - we would need workarounds for its	1366	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1219	# byzantine signal and broken child handling, among others.	1367	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1220	# IO::Async is rather hard to detect, as it doesn't have any	1368	[FLTK:: => AnyEvent::Impl::FLTK::],
1221	# obvious default class.
1222	[IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program
1223	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program
1224	[IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program
1225	[AnyEvent::Impl::IOAsync:: => AnyEvent::Impl::IOAsync::], # requires special main program
1226	);	1369	);
1227		1370
1228	our %method = map +($_ => 1),	1371	our @isa_hook;
		1372
		1373	sub _isa_set {
		1374	my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
		1375
		1376	@{"$pkg[$_-1]::ISA"} = $pkg[$_]
		1377	for 1 .. $#pkg;
		1378
		1379	grep $_ && $_->[1], @isa_hook
		1380	and AE::_reset ();
		1381	}
		1382
		1383	# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
		1384	sub _isa_hook($$;$) {
		1385	my ($i, $pkg, $reset_ae) = @_;
		1386
		1387	$isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
		1388
		1389	_isa_set;
		1390	}
		1391
		1392	# all autoloaded methods reserve the complete glob, not just the method slot.
		1393	# due to bugs in perls method cache implementation.
1229	qw(io timer time now now_update signal child idle condvar one_event DESTROY);	1394	our @methods = qw(io timer time now now_update signal child idle condvar);
1230
1231	our @post_detect;
1232
1233	sub post_detect(&) {
1234	my ($cb) = @_;
1235
1236	push @post_detect, $cb;
1237
1238	defined wantarray
1239	? bless \$cb, "AnyEvent::Util::postdetect"
1240	: ()
1241	}
1242
1243	sub AnyEvent::Util::postdetect::DESTROY {
1244	@post_detect = grep $_ != ${$_[0]}, @post_detect;
1245	}
1246		1395
1247	sub detect() {	1396	sub detect() {
		1397	return $MODEL if $MODEL; # some programs keep references to detect
		1398
		1399	local $!; # for good measure
		1400	local $SIG{__DIE__}; # we use eval
		1401
1248	# free some memory	1402	# free some memory
1249	*detect = sub () { $MODEL };	1403	*detect = sub () { $MODEL };
		1404	# undef &func doesn't correctly update the method cache. grmbl.
		1405	# so we delete the whole glob. grmbl.
		1406	# otoh, perl doesn't let me undef an active usb, but it lets me free
		1407	# a glob with an active sub. hrm. i hope it works, but perl is
		1408	# usually buggy in this department. sigh.
		1409	delete @{"AnyEvent::"}{@methods};
		1410	undef @methods;
1250		1411
1251	local $!; # for good measure
1252	local $SIG{__DIE__};
1253
1254	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1412	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1255	my $model = "AnyEvent::Impl::$1";	1413	my $model = $1;
		1414	$model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1256	if (eval "require $model") {	1415	if (eval "require $model") {
		1416	AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.";
1257	$MODEL = $model;	1417	$MODEL = $model;
1258	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;
1259	} else {	1418	} else {
1260	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;	1419	AnyEvent::log 4 => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1261	}	1420	}
1262	}	1421	}
1263		1422
1264	# check for already loaded models	1423	# check for already loaded models
1265	unless ($MODEL) {	1424	unless ($MODEL) {
1266	for (@REGISTRY, @models) {	1425	for (@REGISTRY, @models) {
1267	my ($package, $model) = @$_;	1426	my ($package, $model) = @$_;
1268	if (${"$package\::VERSION"} > 0) {	1427	if (${"$package\::VERSION"} > 0) {
1269	if (eval "require $model") {	1428	if (eval "require $model") {
		1429	AnyEvent::log 7 => "autodetected model '$model', using it.";
1270	$MODEL = $model;	1430	$MODEL = $model;
1271	warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2;
1272	last;	1431	last;
1273	}	1432	}
1274	}	1433	}
1275	}	1434	}
1276		1435
…		…
1282	$autoload	1441	$autoload
1283	and eval "require $package"	1442	and eval "require $package"
1284	and ${"$package\::VERSION"} > 0	1443	and ${"$package\::VERSION"} > 0
1285	and eval "require $model"	1444	and eval "require $model"
1286	) {	1445	) {
		1446	AnyEvent::log 7 => "autoloaded model '$model', using it.";
1287	$MODEL = $model;	1447	$MODEL = $model;
1288	warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2;
1289	last;	1448	last;
1290	}	1449	}
1291	}	1450	}
1292		1451
1293	$MODEL	1452	$MODEL
1294	or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV, Event or Glib.\n";	1453	or AnyEvent::log fatal => "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1295	}	1454	}
1296	}	1455	}
1297		1456
1298	@models = (); # free probe data	1457	# free memory only needed for probing
		1458	undef @models;
		1459	undef @REGISTRY;
1299		1460
1300	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1461	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1301	unshift @ISA, $MODEL;
1302		1462
1303	# now nuke some methods that are overriden by the backend.	1463	# now nuke some methods that are overridden by the backend.
1304	# SUPER is not allowed.	1464	# SUPER usage is not allowed in these.
1305	for (qw(time signal child idle)) {	1465	for (qw(time signal child idle)) {
1306	undef &{"AnyEvent::Base::$_"}	1466	undef &{"AnyEvent::Base::$_"}
1307	if defined &{"$MODEL\::$_"};	1467	if defined &{"$MODEL\::$_"};
1308	}	1468	}
1309		1469
1310	require AnyEvent::Strict if $ENV{PERL_ANYEVENT_STRICT};	1470	_isa_set;
		1471
		1472	# we're officially open!
		1473
		1474	if ($ENV{PERL_ANYEVENT_STRICT}) {
		1475	require AnyEvent::Strict;
		1476	}
		1477
		1478	if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
		1479	require AnyEvent::Debug;
		1480	AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
		1481	}
		1482
		1483	if (length $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
		1484	require AnyEvent::Socket;
		1485	require AnyEvent::Debug;
		1486
		1487	my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
		1488	$shell =~ s/\$\$/$$/g;
		1489
		1490	my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
		1491	$AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
		1492	}
		1493
		1494	# now the anyevent environment is set up as the user told us to, so
		1495	# call the actual user code - post detects
1311		1496
1312	(shift @post_detect)->() while @post_detect;	1497	(shift @post_detect)->() while @post_detect;
		1498	undef @post_detect;
1313		1499
1314	*post_detect = sub(&) {	1500	*post_detect = sub(&) {
1315	shift->();	1501	shift->();
1316		1502
1317	undef	1503	undef
1318	};	1504	};
1319		1505
1320	$MODEL	1506	$MODEL
1321	}	1507	}
1322		1508
1323	sub AUTOLOAD {	1509	for my $name (@methods) {
1324	(my $func = $AUTOLOAD) =~ s/.*://;	1510	*$name = sub {
1325
1326	$method{$func}
1327	or Carp::croak "$func: not a valid AnyEvent class method";
1328
1329	detect;	1511	detect;
1330		1512	# we use goto because
1331	my $class = shift;	1513	# a) it makes the thunk more transparent
1332	$class->$func (@_);	1514	# b) it allows us to delete the thunk later
		1515	goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
		1516	};
1333	}	1517	}
1334		1518
1335	# utility function to dup a filehandle. this is used by many backends	1519	# utility function to dup a filehandle. this is used by many backends
1336	# to support binding more than one watcher per filehandle (they usually	1520	# to support binding more than one watcher per filehandle (they usually
1337	# allow only one watcher per fd, so we dup it to get a different one).	1521	# allow only one watcher per fd, so we dup it to get a different one).
…		…
1361		1545
1362	package AE;	1546	package AE;
1363		1547
1364	our $VERSION = $AnyEvent::VERSION;	1548	our $VERSION = $AnyEvent::VERSION;
1365		1549
		1550	sub _reset() {
		1551	eval q{
1366	# fall back to the main API by default - backends and AnyEvent::Base	1552	# fall back to the main API by default - backends and AnyEvent::Base
1367	# implementations can overwrite these.	1553	# implementations can overwrite these.
1368		1554
1369	sub io($$$) {	1555	sub io($$$) {
1370	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])	1556	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1371	}	1557	}
1372		1558
1373	sub timer($$$) {	1559	sub timer($$$) {
1374	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])	1560	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1375	}	1561	}
1376		1562
1377	sub signal($$) {	1563	sub signal($$) {
1378	AnyEvent->signal (signal => $_[0], cb => $_[1])	1564	AnyEvent->signal (signal => $_[0], cb => $_[1])
1379	}	1565	}
1380		1566
1381	sub child($$) {	1567	sub child($$) {
1382	AnyEvent->child (pid => $_[0], cb => $_[1])	1568	AnyEvent->child (pid => $_[0], cb => $_[1])
1383	}	1569	}
1384		1570
1385	sub idle($) {	1571	sub idle($) {
1386	AnyEvent->idle (cb => $_[0])	1572	AnyEvent->idle (cb => $_[0]);
1387	}	1573	}
1388		1574
1389	sub cv(;&) {	1575	sub cv(;&) {
1390	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())	1576	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1391	}	1577	}
1392		1578
1393	sub now() {	1579	sub now() {
1394	AnyEvent->now	1580	AnyEvent->now
1395	}	1581	}
1396		1582
1397	sub now_update() {	1583	sub now_update() {
1398	AnyEvent->now_update	1584	AnyEvent->now_update
1399	}	1585	}
1400		1586
1401	sub time() {	1587	sub time() {
1402	AnyEvent->time	1588	AnyEvent->time
		1589	}
		1590
		1591	*postpone = \&AnyEvent::postpone;
		1592	*log = \&AnyEvent::log;
		1593	};
		1594	die if $@;
1403	}	1595	}
		1596
		1597	BEGIN { _reset }
1404		1598
1405	package AnyEvent::Base;	1599	package AnyEvent::Base;
1406		1600
1407	# default implementations for many methods	1601	# default implementations for many methods
1408		1602
1409	sub time {	1603	sub time {
1410	eval q{ # poor man's autoloading {}	1604	eval q{ # poor man's autoloading {}
1411	# probe for availability of Time::HiRes	1605	# probe for availability of Time::HiRes
1412	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1606	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1413	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;	1607	*time = sub { Time::HiRes::time () };
1414	*AE::time = \&Time::HiRes::time;	1608	*AE::time = \& Time::HiRes::time ;
		1609	*now = \&time;
		1610	AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy.";
1415	# if (eval "use POSIX (); (POSIX::times())...	1611	# if (eval "use POSIX (); (POSIX::times())...
1416	} else {	1612	} else {
		1613	*time = sub { CORE::time };
		1614	*AE::time = sub (){ CORE::time };
		1615	*now = \&time;
1417	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;	1616	AnyEvent::log 3 => "using built-in time(), WARNING, no sub-second resolution!";
1418	*AE::time = sub (){ time }; # epic fail
1419	}	1617	}
1420
1421	*time = sub { AE::time }; # different prototypes
1422	};	1618	};
1423	die if $@;	1619	die if $@;
1424		1620
1425	&time	1621	&time
1426	}	1622	}
1427		1623
1428	*now = \&time;	1624	*now = \&time;
1429
1430	sub now_update { }	1625	sub now_update { }
1431		1626
		1627	sub _poll {
		1628	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
		1629	}
		1630
1432	# default implementation for ->condvar	1631	# default implementation for ->condvar
		1632	# in fact, the default should not be overwritten
1433		1633
1434	sub condvar {	1634	sub condvar {
1435	eval q{ # poor man's autoloading {}	1635	eval q{ # poor man's autoloading {}
1436	*condvar = sub {	1636	*condvar = sub {
1437	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"	1637	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
…		…
1515		1715
1516	sub signal {	1716	sub signal {
1517	eval q{ # poor man's autoloading {}	1717	eval q{ # poor man's autoloading {}
1518	# probe for availability of Async::Interrupt	1718	# probe for availability of Async::Interrupt
1519	if (_have_async_interrupt) {	1719	if (_have_async_interrupt) {
1520	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;	1720	AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling.";
1521		1721
1522	$SIGPIPE_R = new Async::Interrupt::EventPipe;	1722	$SIGPIPE_R = new Async::Interrupt::EventPipe;
1523	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;	1723	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1524		1724
1525	} else {	1725	} else {
1526	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;	1726	AnyEvent::log 8 => "using emulated perl signal handling with latency timer.";
1527		1727
1528	if (AnyEvent::WIN32) {	1728	if (AnyEvent::WIN32) {
1529	require AnyEvent::Util;	1729	require AnyEvent::Util;
1530		1730
1531	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();	1731	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
…		…
1607	: sysread $SIGPIPE_R, (my $dummy), 9;	1807	: sysread $SIGPIPE_R, (my $dummy), 9;
1608		1808
1609	while (%SIG_EV) {	1809	while (%SIG_EV) {
1610	for (keys %SIG_EV) {	1810	for (keys %SIG_EV) {
1611	delete $SIG_EV{$_};	1811	delete $SIG_EV{$_};
1612	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1812	&$_ for values %{ $SIG_CB{$_} \|\| {} };
1613	}	1813	}
1614	}	1814	}
1615	};	1815	};
1616	};	1816	};
1617	die if $@;	1817	die if $@;
…		…
1622	# default implementation for ->child	1822	# default implementation for ->child
1623		1823
1624	our %PID_CB;	1824	our %PID_CB;
1625	our $CHLD_W;	1825	our $CHLD_W;
1626	our $CHLD_DELAY_W;	1826	our $CHLD_DELAY_W;
1627	our $WNOHANG;
1628		1827
1629	# used by many Impl's	1828	# used by many Impl's
1630	sub _emit_childstatus($$) {	1829	sub _emit_childstatus($$) {
1631	my (undef, $rpid, $rstatus) = @_;	1830	my (undef, $rpid, $rstatus) = @_;
1632		1831
…		…
1639	eval q{ # poor man's autoloading {}	1838	eval q{ # poor man's autoloading {}
1640	*_sigchld = sub {	1839	*_sigchld = sub {
1641	my $pid;	1840	my $pid;
1642		1841
1643	AnyEvent->_emit_childstatus ($pid, $?)	1842	AnyEvent->_emit_childstatus ($pid, $?)
1644	while ($pid = waitpid -1, $WNOHANG) > 0;	1843	while ($pid = waitpid -1, WNOHANG) > 0;
1645	};	1844	};
1646		1845
1647	*child = sub {	1846	*child = sub {
1648	my (undef, %arg) = @_;	1847	my (undef, %arg) = @_;
1649		1848
1650	defined (my $pid = $arg{pid} + 0)	1849	my $pid = $arg{pid};
1651	or Carp::croak "required option 'pid' is missing";	1850	my $cb = $arg{cb};
1652		1851
1653	$PID_CB{$pid}{$arg{cb}} = $arg{cb};	1852	$PID_CB{$pid}{$cb+0} = $cb;
1654
1655	# WNOHANG is almost cetrainly 1 everywhere
1656	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/
1657	? 1
1658	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;
1659		1853
1660	unless ($CHLD_W) {	1854	unless ($CHLD_W) {
1661	$CHLD_W = AE::signal CHLD => \&_sigchld;	1855	$CHLD_W = AE::signal CHLD => \&_sigchld;
1662	# child could be a zombie already, so make at least one round	1856	# child could be a zombie already, so make at least one round
1663	&_sigchld;	1857	&_sigchld;
1664	}	1858	}
1665		1859
1666	bless [$pid, $arg{cb}], "AnyEvent::Base::child"	1860	bless [$pid, $cb+0], "AnyEvent::Base::child"
1667	};	1861	};
1668		1862
1669	*AnyEvent::Base::child::DESTROY = sub {	1863	*AnyEvent::Base::child::DESTROY = sub {
1670	my ($pid, $cb) = @{$_[0]};	1864	my ($pid, $icb) = @{$_[0]};
1671		1865
1672	delete $PID_CB{$pid}{$cb};	1866	delete $PID_CB{$pid}{$icb};
1673	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };	1867	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };
1674		1868
1675	undef $CHLD_W unless keys %PID_CB;	1869	undef $CHLD_W unless keys %PID_CB;
1676	};	1870	};
1677	};	1871	};
…		…
1690		1884
1691	my ($cb, $w, $rcb) = $arg{cb};	1885	my ($cb, $w, $rcb) = $arg{cb};
1692		1886
1693	$rcb = sub {	1887	$rcb = sub {
1694	if ($cb) {	1888	if ($cb) {
1695	$w = _time;	1889	$w = AE::time;
1696	&$cb;	1890	&$cb;
1697	$w = _time - $w;	1891	$w = AE::time - $w;
1698		1892
1699	# never use more then 50% of the time for the idle watcher,	1893	# never use more then 50% of the time for the idle watcher,
1700	# within some limits	1894	# within some limits
1701	$w = 0.0001 if $w < 0.0001;	1895	$w = 0.0001 if $w < 0.0001;
1702	$w = 5 if $w > 5;	1896	$w = 5 if $w > 5;
…		…
1725		1919
1726	package AnyEvent::CondVar;	1920	package AnyEvent::CondVar;
1727		1921
1728	our @ISA = AnyEvent::CondVar::Base::;	1922	our @ISA = AnyEvent::CondVar::Base::;
1729		1923
		1924	# only to be used for subclassing
		1925	sub new {
		1926	my $class = shift;
		1927	bless AnyEvent->condvar (@_), $class
		1928	}
		1929
1730	package AnyEvent::CondVar::Base;	1930	package AnyEvent::CondVar::Base;
1731		1931
1732	#use overload	1932	#use overload
1733	# '&{}' => sub { my $self = shift; sub { $self->send (@_) } },	1933	# '&{}' => sub { my $self = shift; sub { $self->send (@_) } },
1734	# fallback => 1;	1934	# fallback => 1;
…		…
1743		1943
1744	sub _send {	1944	sub _send {
1745	# nop	1945	# nop
1746	}	1946	}
1747		1947
		1948	sub _wait {
		1949	AnyEvent->_poll until $_[0]{_ae_sent};
		1950	}
		1951
1748	sub send {	1952	sub send {
1749	my $cv = shift;	1953	my $cv = shift;
1750	$cv->{_ae_sent} = [@_];	1954	$cv->{_ae_sent} = [@_];
1751	(delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb};	1955	(delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb};
1752	$cv->_send;	1956	$cv->_send;
…		…
1759		1963
1760	sub ready {	1964	sub ready {
1761	$_[0]{_ae_sent}	1965	$_[0]{_ae_sent}
1762	}	1966	}
1763		1967
1764	sub _wait {
1765	$WAITING
1766	and !$_[0]{_ae_sent}
1767	and Carp::croak "AnyEvent::CondVar: recursive blocking wait detected";
1768
1769	local $WAITING = 1;
1770	AnyEvent->one_event while !$_[0]{_ae_sent};
1771	}
1772
1773	sub recv {	1968	sub recv {
		1969	unless ($_[0]{_ae_sent}) {
		1970	$WAITING
		1971	and Carp::croak "AnyEvent::CondVar: recursive blocking wait attempted";
		1972
		1973	local $WAITING = 1;
1774	$_[0]->_wait;	1974	$_[0]->_wait;
		1975	}
1775		1976
1776	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};	1977	$_[0]{_ae_croak}
1777	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]	1978	and Carp::croak $_[0]{_ae_croak};
		1979
		1980	wantarray
		1981	? @{ $_[0]{_ae_sent} }
		1982	: $_[0]{_ae_sent}[0]
1778	}	1983	}
1779		1984
1780	sub cb {	1985	sub cb {
1781	my $cv = shift;	1986	my $cv = shift;
1782		1987
…		…
1798	&{ $_[0]{_ae_end_cb} \|\| sub { $_[0]->send } };	2003	&{ $_[0]{_ae_end_cb} \|\| sub { $_[0]->send } };
1799	}	2004	}
1800		2005
1801	# undocumented/compatibility with pre-3.4	2006	# undocumented/compatibility with pre-3.4
1802	*broadcast = \&send;	2007	*broadcast = \&send;
1803	*wait = \&_wait;	2008	*wait = \&recv;
1804		2009
1805	=head1 ERROR AND EXCEPTION HANDLING	2010	=head1 ERROR AND EXCEPTION HANDLING
1806		2011
1807	In general, AnyEvent does not do any error handling - it relies on the	2012	In general, AnyEvent does not do any error handling - it relies on the
1808	caller to do that if required. The L<AnyEvent::Strict> module (see also	2013	caller to do that if required. The L<AnyEvent::Strict> module (see also
…		…
1820	$Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and	2025	$Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and
1821	so on.	2026	so on.
1822		2027
1823	=head1 ENVIRONMENT VARIABLES	2028	=head1 ENVIRONMENT VARIABLES
1824		2029
1825	The following environment variables are used by this module or its	2030	AnyEvent supports a number of environment variables that tune the
1826	submodules.	2031	runtime behaviour. They are usually evaluated when AnyEvent is
		2032	loaded, initialised, or a submodule that uses them is loaded. Many of
		2033	them also cause AnyEvent to load additional modules - for example,
		2034	C<PERL_ANYEVENT_DEBUG_WRAP> causes the L<AnyEvent::Debug> module to be
		2035	loaded.
1827		2036
1828	Note that AnyEvent will remove I<all> environment variables starting with	2037	All the environment variables documented here start with
1829	C<PERL_ANYEVENT_> from C<%ENV> when it is loaded while taint mode is	2038	C<PERL_ANYEVENT_>, which is what AnyEvent considers its own
1830	enabled.	2039	namespace. Other modules are encouraged (but by no means required) to use
		2040	C<PERL_ANYEVENT_SUBMODULE> if they have registered the AnyEvent::Submodule
		2041	namespace on CPAN, for any submodule. For example, L<AnyEvent::HTTP> could
		2042	be expected to use C<PERL_ANYEVENT_HTTP_PROXY> (it should not access env
		2043	variables starting with C<AE_>, see below).
		2044
		2045	All variables can also be set via the C<AE_> prefix, that is, instead
		2046	of setting C<PERL_ANYEVENT_VERBOSE> you can also set C<AE_VERBOSE>. In
		2047	case there is a clash btween anyevent and another program that uses
		2048	C<AE_something> you can set the corresponding C<PERL_ANYEVENT_something>
		2049	variable to the empty string, as those variables take precedence.
		2050
		2051	When AnyEvent is first loaded, it copies all C<AE_xxx> env variables
		2052	to their C<PERL_ANYEVENT_xxx> counterpart unless that variable already
		2053	exists. If taint mode is on, then AnyEvent will remove I<all> environment
		2054	variables starting with C<PERL_ANYEVENT_> from C<%ENV> (or replace them
		2055	with C<undef> or the empty string, if the corresaponding C<AE_> variable
		2056	is set).
		2057
		2058	The exact algorithm is currently:
		2059
		2060	1. if taint mode enabled, delete all PERL_ANYEVENT_xyz variables from %ENV
		2061	2. copy over AE_xyz to PERL_ANYEVENT_xyz unless the latter alraedy exists
		2062	3. if taint mode enabled, set all PERL_ANYEVENT_xyz variables to undef.
		2063
		2064	This ensures that child processes will not see the C<AE_> variables.
		2065
		2066	The following environment variables are currently known to AnyEvent:
1831		2067
1832	=over 4	2068	=over 4
1833		2069
1834	=item C<PERL_ANYEVENT_VERBOSE>	2070	=item C<PERL_ANYEVENT_VERBOSE>
1835		2071
1836	By default, AnyEvent will be completely silent except in fatal	2072	By default, AnyEvent will only log messages with loglevel C<3>
1837	conditions. You can set this environment variable to make AnyEvent more	2073	(C<critical>) or higher (see L<AnyEvent::Log>). You can set this
		2074	environment variable to a numerical loglevel to make AnyEvent more (or
1838	talkative.	2075	less) talkative.
1839		2076
		2077	If you want to do more than just set the global logging level
		2078	you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more
		2079	complex specifications.
		2080
		2081	When set to C<0> (C<off>), then no messages whatsoever will be logged with
		2082	the default logging settings.
		2083
1840	When set to C<1> or higher, causes AnyEvent to warn about unexpected	2084	When set to C<5> or higher (C<warn>), causes AnyEvent to warn about
1841	conditions, such as not being able to load the event model specified by	2085	unexpected conditions, such as not being able to load the event model
1842	C<PERL_ANYEVENT_MODEL>.	2086	specified by C<PERL_ANYEVENT_MODEL>, or a guard callback throwing an
		2087	exception - this is the minimum recommended level.
1843		2088
1844	When set to C<2> or higher, cause AnyEvent to report to STDERR which event	2089	When set to C<7> or higher (info), cause AnyEvent to report which event model it
1845	model it chooses.	2090	chooses.
1846		2091
1847	When set to C<8> or higher, then AnyEvent will report extra information on	2092	When set to C<8> or higher (debug), then AnyEvent will report extra information on
1848	which optional modules it loads and how it implements certain features.	2093	which optional modules it loads and how it implements certain features.
		2094
		2095	=item C<PERL_ANYEVENT_LOG>
		2096
		2097	Accepts rather complex logging specifications. For example, you could log
		2098	all C<debug> messages of some module to stderr, warnings and above to
		2099	stderr, and errors and above to syslog, with:
		2100
		2101	PERL_ANYEVENT_LOG=Some::Module=debug,+log:filter=warn,+%syslog:%syslog=error,syslog
		2102
		2103	For the rather extensive details, see L<AnyEvent::Log>.
		2104
		2105	This variable is evaluated when AnyEvent (or L<AnyEvent::Log>) is loaded,
		2106	so will take effect even before AnyEvent has initialised itself.
		2107
		2108	Note that specifying this environment variable causes the L<AnyEvent::Log>
		2109	module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only
		2110	using the latter saves a few hundred kB of memory until the first message
		2111	is being logged.
1849		2112
1850	=item C<PERL_ANYEVENT_STRICT>	2113	=item C<PERL_ANYEVENT_STRICT>
1851		2114
1852	AnyEvent does not do much argument checking by default, as thorough	2115	AnyEvent does not do much argument checking by default, as thorough
1853	argument checking is very costly. Setting this variable to a true value	2116	argument checking is very costly. Setting this variable to a true value
…		…
1860	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>	2123	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1861	>>, it is definitely recommended to keep it off in production. Keeping	2124	>>, it is definitely recommended to keep it off in production. Keeping
1862	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs	2125	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1863	can be very useful, however.	2126	can be very useful, however.
1864		2127
		2128	=item C<PERL_ANYEVENT_DEBUG_SHELL>
		2129
		2130	If this env variable is nonempty, then its contents will be interpreted by
		2131	C<AnyEvent::Socket::parse_hostport> and C<AnyEvent::Debug::shell> (after
		2132	replacing every occurance of C<$$> by the process pid). The shell object
		2133	is saved in C<$AnyEvent::Debug::SHELL>.
		2134
		2135	This happens when the first watcher is created.
		2136
		2137	For example, to bind a debug shell on a unix domain socket in
		2138	F<< /tmp/debug<pid>.sock >>, you could use this:
		2139
		2140	PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
		2141	# connect with e.g.: socat readline /tmp/debug123.sock
		2142
		2143	Or to bind to tcp port 4545 on localhost:
		2144
		2145	PERL_ANYEVENT_DEBUG_SHELL=127.0.0.1:4545 perlprog
		2146	# connect with e.g.: telnet localhost 4545
		2147
		2148	Note that creating sockets in F</tmp> or on localhost is very unsafe on
		2149	multiuser systems.
		2150
		2151	=item C<PERL_ANYEVENT_DEBUG_WRAP>
		2152
		2153	Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
		2154	debugging purposes. See C<AnyEvent::Debug::wrap> for details.
		2155
1865	=item C<PERL_ANYEVENT_MODEL>	2156	=item C<PERL_ANYEVENT_MODEL>
1866		2157
1867	This can be used to specify the event model to be used by AnyEvent, before	2158	This can be used to specify the event model to be used by AnyEvent, before
1868	auto detection and -probing kicks in. It must be a string consisting	2159	auto detection and -probing kicks in.
1869	entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended	2160
		2161	It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
		2162	or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1870	and the resulting module name is loaded and if the load was successful,	2163	resulting module name is loaded and - if the load was successful - used as
1871	used as event model. If it fails to load AnyEvent will proceed with	2164	event model backend. If it fails to load then AnyEvent will proceed with
1872	auto detection and -probing.	2165	auto detection and -probing.
1873		2166
1874	This functionality might change in future versions.	2167	If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
		2168	nothing gets prepended and the module name is used as-is (hint: C<::> at
		2169	the end of a string designates a module name and quotes it appropriately).
1875		2170
1876	For example, to force the pure perl model (L<AnyEvent::Impl::Perl>) you	2171	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1877	could start your program like this:	2172	could start your program like this:
1878		2173
1879	PERL_ANYEVENT_MODEL=Perl perl ...	2174	PERL_ANYEVENT_MODEL=Perl perl ...
1880		2175
1881	=item C<PERL_ANYEVENT_PROTOCOLS>	2176	=item C<PERL_ANYEVENT_PROTOCOLS>
…		…
1897	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>	2192	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>
1898	- only support IPv4, never try to resolve or contact IPv6	2193	- only support IPv4, never try to resolve or contact IPv6
1899	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or	2194	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or
1900	IPv6, but prefer IPv6 over IPv4.	2195	IPv6, but prefer IPv6 over IPv4.
1901		2196
		2197	=item C<PERL_ANYEVENT_HOSTS>
		2198
		2199	This variable, if specified, overrides the F</etc/hosts> file used by
		2200	L<AnyEvent::Socket>C<::resolve_sockaddr>, i.e. hosts aliases will be read
		2201	from that file instead.
		2202
1902	=item C<PERL_ANYEVENT_EDNS0>	2203	=item C<PERL_ANYEVENT_EDNS0>
1903		2204
1904	Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension	2205	Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension for
1905	for DNS. This extension is generally useful to reduce DNS traffic, but	2206	DNS. This extension is generally useful to reduce DNS traffic, especially
1906	some (broken) firewalls drop such DNS packets, which is why it is off by	2207	when DNSSEC is involved, but some (broken) firewalls drop such DNS
1907	default.	2208	packets, which is why it is off by default.
1908		2209
1909	Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce	2210	Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce
1910	EDNS0 in its DNS requests.	2211	EDNS0 in its DNS requests.
1911		2212
1912	=item C<PERL_ANYEVENT_MAX_FORKS>	2213	=item C<PERL_ANYEVENT_MAX_FORKS>
…		…
1920	resolver - this is the maximum number of parallel DNS requests that are	2221	resolver - this is the maximum number of parallel DNS requests that are
1921	sent to the DNS server.	2222	sent to the DNS server.
1922		2223
1923	=item C<PERL_ANYEVENT_RESOLV_CONF>	2224	=item C<PERL_ANYEVENT_RESOLV_CONF>
1924		2225
1925	The file to use instead of F</etc/resolv.conf> (or OS-specific	2226	The absolute path to a F<resolv.conf>-style file to use instead of
1926	configuration) in the default resolver. When set to the empty string, no	2227	F</etc/resolv.conf> (or the OS-specific configuration) in the default
1927	default config will be used.	2228	resolver, or the empty string to select the default configuration.
1928		2229
1929	=item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>.	2230	=item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>.
1930		2231
1931	When neither C<ca_file> nor C<ca_path> was specified during	2232	When neither C<ca_file> nor C<ca_path> was specified during
1932	L<AnyEvent::TLS> context creation, and either of these environment	2233	L<AnyEvent::TLS> context creation, and either of these environment
1933	variables exist, they will be used to specify CA certificate locations	2234	variables are nonempty, they will be used to specify CA certificate
1934	instead of a system-dependent default.	2235	locations instead of a system-dependent default.
1935		2236
1936	=item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT>	2237	=item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT>
1937		2238
1938	When these are set to C<1>, then the respective modules are not	2239	When these are set to C<1>, then the respective modules are not
1939	loaded. Mostly good for testing AnyEvent itself.	2240	loaded. Mostly good for testing AnyEvent itself.
…		…
2271	(even when used without AnyEvent), but most event loops have acceptable	2572	(even when used without AnyEvent), but most event loops have acceptable
2272	performance with or without AnyEvent.	2573	performance with or without AnyEvent.
2273		2574
2274	=item * The overhead AnyEvent adds is usually much smaller than the overhead of	2575	=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2275	the actual event loop, only with extremely fast event loops such as EV	2576	the actual event loop, only with extremely fast event loops such as EV
2276	adds AnyEvent significant overhead.	2577	does AnyEvent add significant overhead.
2277		2578
2278	=item * You should avoid POE like the plague if you want performance or	2579	=item * You should avoid POE like the plague if you want performance or
2279	reasonable memory usage.	2580	reasonable memory usage.
2280		2581
2281	=back	2582	=back
…		…
2580		2881
2581	=item L<Time::HiRes>	2882	=item L<Time::HiRes>
2582		2883
2583	This module is part of perl since release 5.008. It will be used when the	2884	This module is part of perl since release 5.008. It will be used when the
2584	chosen event library does not come with a timing source of its own. The	2885	chosen event library does not come with a timing source of its own. The
2585	pure-perl event loop (L<AnyEvent::Impl::Perl>) will additionally use it to	2886	pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to
2586	try to use a monotonic clock for timing stability.	2887	try to use a monotonic clock for timing stability.
2587		2888
2588	=back	2889	=back
2589		2890
2590		2891
…		…
2652	pronounced).	2953	pronounced).
2653		2954
2654		2955
2655	=head1 SEE ALSO	2956	=head1 SEE ALSO
2656		2957
2657	Utility functions: L<AnyEvent::Util>.	2958	Tutorial/Introduction: L<AnyEvent::Intro>.
2658		2959
2659	Event modules: L<EV>, L<EV::Glib>, L<Glib::EV>, L<Event>, L<Glib::Event>,	2960	FAQ: L<AnyEvent::FAQ>.
2660	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2961
		2962	Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
		2963	(simply logging).
		2964
		2965	Development/Debugging: L<AnyEvent::Strict> (stricter checking),
		2966	L<AnyEvent::Debug> (interactive shell, watcher tracing).
		2967
		2968	Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
		2969	L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
		2970	L<Qt>, L<POE>, L<FLTK>.
2661		2971
2662	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2972	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2663	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2973	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2664	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2974	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2665	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>.	2975	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
		2976	L<AnyEvent::Impl::FLTK>.
2666		2977
2667	Non-blocking file handles, sockets, TCP clients and	2978	Non-blocking handles, pipes, stream sockets, TCP clients and
2668	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.	2979	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2669		2980
2670	Asynchronous DNS: L<AnyEvent::DNS>.	2981	Asynchronous DNS: L<AnyEvent::DNS>.
2671		2982
2672	Coroutine support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>,	2983	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.
2673	L<Coro::Event>,
2674		2984
2675	Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::XMPP>,	2985	Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>,
2676	L<AnyEvent::HTTP>.	2986	L<AnyEvent::HTTP>.
2677		2987
2678		2988
2679	=head1 AUTHOR	2989	=head1 AUTHOR
2680		2990

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Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.332 by root, Tue Aug 31 23:32:40 2010 UTC vs. Revision 1.384 by root, Mon Sep 5 07:21:54 2011 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.332 by root, Tue Aug 31 23:32:40 2010 UTC vs.
Revision 1.384 by root, Mon Sep 5 07:21:54 2011 UTC