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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.334 by root, Tue Oct 12 06:51:15 2010 UTC vs.
Revision 1.370 by root, Wed Aug 17 02:50:35 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
85	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
86	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.
87		87
88	AnyEvent is different: AnyEvent + POE works fine. AnyEvent + Glib works	88	AnyEvent is different: AnyEvent + POE works fine. AnyEvent + Glib works
89	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
90	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
91	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
92	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
93	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
94	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,
95	to AnyEvent, too, so it is future-proof).	95	so it is future-proof).
96		96
97	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
98	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
99	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
100	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
…		…
121	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>
122	module.	122	module.
123		123
124	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
125	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
126	following modules is already loaded: L<EV>, L<AnyEvent::Impl::Perl>,	126	following modules is already loaded: L<EV>, L<AnyEvent::Loop>,
127	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
128	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
129	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
130	available, the pure-perl L<AnyEvent::Impl::Perl> should always work, so	130	available, the pure-perl L<AnyEvent::Loop> should always work, so
131	the other two are not normally tried.	131	the other two are not normally tried.
132		132
133	Because AnyEvent first checks for modules that are already loaded, loading	133	Because AnyEvent first checks for modules that are already loaded, loading
134	an event model explicitly before first using AnyEvent will likely make	134	an event model explicitly before first using AnyEvent will likely make
135	that model the default. For example:	135	that model the default. For example:
…		…
142	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
143	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,
144	as very few modules hardcode event loops without announcing this very	144	as very few modules hardcode event loops without announcing this very
145	loudly.	145	loudly.
146		146
147	The pure-perl implementation of AnyEvent is called	147	The pure-perl implementation of AnyEvent is called C<AnyEvent::Loop>. Like
148	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
149	explicitly and enjoy the high availability of that event loop :)	149	availability of that event loop :)
150		150
151	=head1 WATCHERS	151	=head1 WATCHERS
152		152
153	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
154	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
…		…
356	difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into	356	difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into
357	account.	357	account.
358		358
359	=item AnyEvent->now_update	359	=item AnyEvent->now_update
360		360
361	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
362	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 >>,
363	AnyEvent->now >>, above).	363	above).
364		364
365	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
366	this "current" time will differ substantially from the real time, which	366	this "current" time will differ substantially from the real time, which
367	might affect timers and time-outs.	367	might affect timers and time-outs.
368		368
…		…
482	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
483	watcher before you C<fork> the child (alternatively, you can call	483	watcher before you C<fork> the child (alternatively, you can call
484	C<AnyEvent::detect>).	484	C<AnyEvent::detect>).
485		485
486	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
487	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
488	mentioned in the description of signal watchers apply.	488	problems mentioned in the description of signal watchers apply.
489		489
490	Example: fork a process and wait for it	490	Example: fork a process and wait for it
491		491
492	my $done = AnyEvent->condvar;	492	my $done = AnyEvent->condvar;
493		493
…		…
860	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
861	pure-perl implementation, which is available everywhere as it comes with	861	pure-perl implementation, which is available everywhere as it comes with
862	AnyEvent itself.	862	AnyEvent itself.
863		863
864	AnyEvent::Impl::EV based on EV (interface to libev, best choice).	864	AnyEvent::Impl::EV based on EV (interface to libev, best choice).
865	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.	865	AnyEvent::Impl::Perl pure-perl AnyEvent::Loop, fast and portable.
866		866
867	=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.
868		868
869	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
870	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
…		…
876	AnyEvent::Impl::Glib based on Glib, slow but very stable.	876	AnyEvent::Impl::Glib based on Glib, slow but very stable.
877	AnyEvent::Impl::Tk based on Tk, very broken.	877	AnyEvent::Impl::Tk based on Tk, very broken.
878	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.	878	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
879	AnyEvent::Impl::POE based on POE, very slow, some limitations.	879	AnyEvent::Impl::POE based on POE, very slow, some limitations.
880	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::FLTK2 based on FLTK (fltk 2 binding).
881		884
882	=item Backends with special needs.	885	=item Backends with special needs.
883		886
884	Qt requires the Qt::Application to be instantiated first, but will	887	Qt requires the Qt::Application to be instantiated first, but will
885	otherwise be picked up automatically. As long as the main program	888	otherwise be picked up automatically. As long as the main program
886	instantiates the application before any AnyEvent watchers are created,	889	instantiates the application before any AnyEvent watchers are created,
887	everything should just work.	890	everything should just work.
888		891
889	AnyEvent::Impl::Qt based on Qt.	892	AnyEvent::Impl::Qt based on Qt.
890
891	Support for IO::Async can only be partial, as it is too broken and
892	architecturally limited to even support the AnyEvent API. It also
893	is the only event loop that needs the loop to be set explicitly, so
894	it can only be used by a main program knowing about AnyEvent. See
895	L<AnyEvent::Impl::IOAsync> for the gory details.
896
897	AnyEvent::Impl::IOAsync based on IO::Async, cannot be autoprobed.
898		893
899	=item Event loops that are indirectly supported via other backends.	894	=item Event loops that are indirectly supported via other backends.
900		895
901	Some event loops can be supported via other modules:	896	Some event loops can be supported via other modules:
902		897
…		…
938		933
939	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model	934	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model
940	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
941	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
942	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).
943		942
944	If you need to do some initialisation before AnyEvent watchers are	943	If you need to do some initialisation before AnyEvent watchers are
945	created, use C<post_detect>.	944	created, use C<post_detect>.
946		945
947	=item $guard = AnyEvent::post_detect { BLOCK }	946	=item $guard = AnyEvent::post_detect { BLOCK }
…		…
1010	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent	1009	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent
1011	# as soon as it is	1010	# as soon as it is
1012	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };	1011	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };
1013	}	1012	}
1014		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	Loads AnyEvent::Log on first use and calls C<AnyEvent::Log::log> -
		1059	consequently, look at the L<AnyEvent::Log> documentation for details.
		1060
		1061	If you want to sprinkle loads of logging calls around your code, consider
		1062	creating a logger callback with the C<AnyEvent::Log::logger> function.
		1063
1015	=back	1064	=back
1016		1065
1017	=head1 WHAT TO DO IN A MODULE	1066	=head1 WHAT TO DO IN A MODULE
1018		1067
1019	As a module author, you should C<use AnyEvent> and call AnyEvent methods	1068	As a module author, you should C<use AnyEvent> and call AnyEvent methods
…		…
1052	modules might create watchers when they are loaded, and AnyEvent will	1101	modules might create watchers when they are loaded, and AnyEvent will
1053	decide on the event model to use as soon as it creates watchers, and it	1102	decide on the event model to use as soon as it creates watchers, and it
1054	might choose the wrong one unless you load the correct one yourself.	1103	might choose the wrong one unless you load the correct one yourself.
1055		1104
1056	You can chose to use a pure-perl implementation by loading the	1105	You can chose to use a pure-perl implementation by loading the
1057	C<AnyEvent::Impl::Perl> module, which gives you similar behaviour	1106	C<AnyEvent::Loop> module, which gives you similar behaviour
1058	everywhere, but letting AnyEvent chose the model is generally better.	1107	everywhere, but letting AnyEvent chose the model is generally better.
1059		1108
1060	=head2 MAINLOOP EMULATION	1109	=head2 MAINLOOP EMULATION
1061		1110
1062	Sometimes (often for short test scripts, or even standalone programs who	1111	Sometimes (often for short test scripts, or even standalone programs who
…		…
1075		1124
1076		1125
1077	=head1 OTHER MODULES	1126	=head1 OTHER MODULES
1078		1127
1079	The following is a non-exhaustive list of additional modules that use	1128	The following is a non-exhaustive list of additional modules that use
1080	AnyEvent as a client and can therefore be mixed easily with other AnyEvent	1129	AnyEvent as a client and can therefore be mixed easily with other
1081	modules and other event loops in the same program. Some of the modules	1130	AnyEvent modules and other event loops in the same program. Some of the
1082	come as part of AnyEvent, the others are available via CPAN.	1131	modules come as part of AnyEvent, the others are available via CPAN (see
		1132	L<http://search.cpan.org/search?m=module&q=anyevent%3A%3A*> for
		1133	a longer non-exhaustive list), and the list is heavily biased towards
		1134	modules of the AnyEvent author himself :)
1083		1135
1084	=over 4	1136	=over 4
1085		1137
1086	=item L<AnyEvent::Util>	1138	=item L<AnyEvent::Util>
1087		1139
…		…
1157		1209
1158	package AnyEvent;	1210	package AnyEvent;
1159		1211
1160	# basically a tuned-down version of common::sense	1212	# basically a tuned-down version of common::sense
1161	sub common_sense {	1213	sub common_sense {
1162	# from common:.sense 3.3	1214	# from common:.sense 3.4
1163	${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf3\x0f\xc0\xf0\xfc\x33\x00";	1215	${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf0\x0f\xc0\xf0\xfc\x33\x00";
1164	# use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl)	1216	# use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl)
1165	$^H \|= 0x00000600;	1217	$^H \|= 0x00000600;
1166	}	1218	}
1167		1219
1168	BEGIN { AnyEvent::common_sense }	1220	BEGIN { AnyEvent::common_sense }
1169		1221
1170	use Carp ();	1222	use Carp ();
1171		1223
1172	our $VERSION = '5.271';	1224	our $VERSION = '6.01';
1173	our $MODEL;	1225	our $MODEL;
1174		1226
1175	our $AUTOLOAD;
1176	our @ISA;	1227	our @ISA;
1177		1228
1178	our @REGISTRY;	1229	our @REGISTRY;
1179		1230
1180	our $VERBOSE;	1231	our $VERBOSE;
…		…
1186		1237
1187	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}	1238	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1188	if ${^TAINT};	1239	if ${^TAINT};
1189		1240
1190	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;	1241	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
1191
1192	}	1242	}
1193		1243
1194	our $MAX_SIGNAL_LATENCY = 10;	1244	our $MAX_SIGNAL_LATENCY = 10;
1195		1245
1196	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred	1246	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred
…		…
1200	$PROTOCOL{$_} = ++$idx	1250	$PROTOCOL{$_} = ++$idx
1201	for reverse split /\s,\s/,	1251	for reverse split /\s,\s/,
1202	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1252	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1203	}	1253	}
1204		1254
		1255	our @post_detect;
		1256
		1257	sub post_detect(&) {
		1258	my ($cb) = @_;
		1259
		1260	push @post_detect, $cb;
		1261
		1262	defined wantarray
		1263	? bless \$cb, "AnyEvent::Util::postdetect"
		1264	: ()
		1265	}
		1266
		1267	sub AnyEvent::Util::postdetect::DESTROY {
		1268	@post_detect = grep $_ != ${$_[0]}, @post_detect;
		1269	}
		1270
		1271	our $POSTPONE_W;
		1272	our @POSTPONE;
		1273
		1274	sub _postpone_exec {
		1275	undef $POSTPONE_W;
		1276
		1277	&{ shift @POSTPONE }
		1278	while @POSTPONE;
		1279	}
		1280
		1281	sub postpone(&) {
		1282	push @POSTPONE, shift;
		1283
		1284	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
		1285
		1286	()
		1287	}
		1288
		1289	sub log($$;@) {
		1290	require AnyEvent::Log;
		1291	# AnyEvent::Log overwrites this function
		1292	goto &log;
		1293	}
		1294
1205	my @models = (	1295	our @models = (
1206	[EV:: => AnyEvent::Impl::EV:: , 1],	1296	[EV:: => AnyEvent::Impl::EV:: , 1],
1207	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],	1297	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1208	# everything below here will not (normally) be autoprobed	1298	# everything below here will not (normally) be autoprobed
1209	# as the pureperl backend should work everywhere	1299	# as the pure perl backend should work everywhere
1210	# and is usually faster	1300	# and is usually faster
1211	[Event:: => AnyEvent::Impl::Event::, 1],	1301	[Event:: => AnyEvent::Impl::Event::, 1],
1212	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers	1302	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers
1213	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1303	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
1214	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package	1304	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1215	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1305	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1216	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1306	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1217	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1307	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1218	[Wx:: => AnyEvent::Impl::POE::],	1308	[Wx:: => AnyEvent::Impl::POE::],
1219	[Prima:: => AnyEvent::Impl::POE::],	1309	[Prima:: => AnyEvent::Impl::POE::],
1220	# IO::Async is just too broken - we would need workarounds for its	1310	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1221	# byzantine signal and broken child handling, among others.	1311	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1222	# IO::Async is rather hard to detect, as it doesn't have any	1312	[FLTK:: => AnyEvent::Impl::FLTK2::],
1223	# obvious default class.
1224	[IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program
1225	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program
1226	[IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program
1227	[AnyEvent::Impl::IOAsync:: => AnyEvent::Impl::IOAsync::], # requires special main program
1228	);	1313	);
1229		1314
1230	our %method = map +($_ => 1),	1315	our @isa_hook;
		1316
		1317	sub _isa_set {
		1318	my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
		1319
		1320	@{"$pkg[$_-1]::ISA"} = $pkg[$_]
		1321	for 1 .. $#pkg;
		1322
		1323	grep $_ && $_->[1], @isa_hook
		1324	and AE::_reset ();
		1325	}
		1326
		1327	# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
		1328	sub _isa_hook($$;$) {
		1329	my ($i, $pkg, $reset_ae) = @_;
		1330
		1331	$isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
		1332
		1333	_isa_set;
		1334	}
		1335
		1336	# all autoloaded methods reserve the complete glob, not just the method slot.
		1337	# due to bugs in perls method cache implementation.
1231	qw(io timer time now now_update signal child idle condvar one_event DESTROY);	1338	our @methods = qw(io timer time now now_update signal child idle condvar);
1232
1233	our @post_detect;
1234
1235	sub post_detect(&) {
1236	my ($cb) = @_;
1237
1238	push @post_detect, $cb;
1239
1240	defined wantarray
1241	? bless \$cb, "AnyEvent::Util::postdetect"
1242	: ()
1243	}
1244
1245	sub AnyEvent::Util::postdetect::DESTROY {
1246	@post_detect = grep $_ != ${$_[0]}, @post_detect;
1247	}
1248		1339
1249	sub detect() {	1340	sub detect() {
		1341	return $MODEL if $MODEL; # some programs keep references to detect
		1342
		1343	local $!; # for good measure
		1344	local $SIG{__DIE__}; # we use eval
		1345
1250	# free some memory	1346	# free some memory
1251	*detect = sub () { $MODEL };	1347	*detect = sub () { $MODEL };
		1348	# undef &func doesn't correctly update the method cache. grmbl.
		1349	# so we delete the whole glob. grmbl.
		1350	# otoh, perl doesn't let me undef an active usb, but it lets me free
		1351	# a glob with an active sub. hrm. i hope it works, but perl is
		1352	# usually buggy in this department. sigh.
		1353	delete @{"AnyEvent::"}{@methods};
		1354	undef @methods;
1252		1355
1253	local $!; # for good measure
1254	local $SIG{__DIE__};
1255
1256	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1356	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1257	my $model = "AnyEvent::Impl::$1";	1357	my $model = $1;
		1358	$model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1258	if (eval "require $model") {	1359	if (eval "require $model") {
1259	$MODEL = $model;	1360	$MODEL = $model;
1260	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;	1361	AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."
		1362	if $VERBOSE >= 7;
1261	} else {	1363	} else {
1262	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;	1364	AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1263	}	1365	}
1264	}	1366	}
1265		1367
1266	# check for already loaded models	1368	# check for already loaded models
1267	unless ($MODEL) {	1369	unless ($MODEL) {
1268	for (@REGISTRY, @models) {	1370	for (@REGISTRY, @models) {
1269	my ($package, $model) = @$_;	1371	my ($package, $model) = @$_;
1270	if (${"$package\::VERSION"} > 0) {	1372	if (${"$package\::VERSION"} > 0) {
1271	if (eval "require $model") {	1373	if (eval "require $model") {
1272	$MODEL = $model;	1374	$MODEL = $model;
1273	warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2;	1375	AnyEvent::log 7 => "autodetected model '$model', using it."
		1376	if $VERBOSE >= 7;
1274	last;	1377	last;
1275	}	1378	}
1276	}	1379	}
1277	}	1380	}
1278		1381
…		…
1285	and eval "require $package"	1388	and eval "require $package"
1286	and ${"$package\::VERSION"} > 0	1389	and ${"$package\::VERSION"} > 0
1287	and eval "require $model"	1390	and eval "require $model"
1288	) {	1391	) {
1289	$MODEL = $model;	1392	$MODEL = $model;
1290	warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2;	1393	AnyEvent::log 7 => "autoloaded model '$model', using it."
		1394	if $VERBOSE >= 7;
1291	last;	1395	last;
1292	}	1396	}
1293	}	1397	}
1294		1398
1295	$MODEL	1399	$MODEL
1296	or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV, Event or Glib.\n";	1400	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1297	}	1401	}
1298	}	1402	}
1299		1403
1300	@models = (); # free probe data	1404	# free memory only needed for probing
		1405	undef @models;
		1406	undef @REGISTRY;
1301		1407
1302	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1408	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1303	unshift @ISA, $MODEL;
1304		1409
1305	# now nuke some methods that are overriden by the backend.	1410	# now nuke some methods that are overridden by the backend.
1306	# SUPER is not allowed.	1411	# SUPER usage is not allowed in these.
1307	for (qw(time signal child idle)) {	1412	for (qw(time signal child idle)) {
1308	undef &{"AnyEvent::Base::$_"}	1413	undef &{"AnyEvent::Base::$_"}
1309	if defined &{"$MODEL\::$_"};	1414	if defined &{"$MODEL\::$_"};
1310	}	1415	}
1311		1416
1312	require AnyEvent::Strict if $ENV{PERL_ANYEVENT_STRICT};	1417	_isa_set;
		1418
		1419	# we're officially open!
		1420
		1421	if ($ENV{PERL_ANYEVENT_STRICT}) {
		1422	require AnyEvent::Strict;
		1423	}
		1424
		1425	if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
		1426	require AnyEvent::Debug;
		1427	AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
		1428	}
		1429
		1430	if (length $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
		1431	require AnyEvent::Socket;
		1432	require AnyEvent::Debug;
		1433
		1434	my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
		1435	$shell =~ s/\$\$/$$/g;
		1436
		1437	my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
		1438	$AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
		1439	}
		1440
		1441	# now the anyevent environment is set up as the user told us to, so
		1442	# call the actual user code - post detects
1313		1443
1314	(shift @post_detect)->() while @post_detect;	1444	(shift @post_detect)->() while @post_detect;
		1445	undef @post_detect;
1315		1446
1316	*post_detect = sub(&) {	1447	*post_detect = sub(&) {
1317	shift->();	1448	shift->();
1318		1449
1319	undef	1450	undef
1320	};	1451	};
1321		1452
1322	$MODEL	1453	$MODEL
1323	}	1454	}
1324		1455
1325	sub AUTOLOAD {	1456	for my $name (@methods) {
1326	(my $func = $AUTOLOAD) =~ s/.*://;	1457	*$name = sub {
1327
1328	$method{$func}
1329	or Carp::croak "$func: not a valid AnyEvent class method";
1330
1331	detect;	1458	detect;
1332		1459	# we use goto because
1333	my $class = shift;	1460	# a) it makes the thunk more transparent
1334	$class->$func (@_);	1461	# b) it allows us to delete the thunk later
		1462	goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
		1463	};
1335	}	1464	}
1336		1465
1337	# utility function to dup a filehandle. this is used by many backends	1466	# utility function to dup a filehandle. this is used by many backends
1338	# to support binding more than one watcher per filehandle (they usually	1467	# to support binding more than one watcher per filehandle (they usually
1339	# allow only one watcher per fd, so we dup it to get a different one).	1468	# allow only one watcher per fd, so we dup it to get a different one).
…		…
1363		1492
1364	package AE;	1493	package AE;
1365		1494
1366	our $VERSION = $AnyEvent::VERSION;	1495	our $VERSION = $AnyEvent::VERSION;
1367		1496
		1497	sub _reset() {
		1498	eval q{
1368	# fall back to the main API by default - backends and AnyEvent::Base	1499	# fall back to the main API by default - backends and AnyEvent::Base
1369	# implementations can overwrite these.	1500	# implementations can overwrite these.
1370		1501
1371	sub io($$$) {	1502	sub io($$$) {
1372	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])	1503	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1373	}	1504	}
1374		1505
1375	sub timer($$$) {	1506	sub timer($$$) {
1376	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])	1507	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1377	}	1508	}
1378		1509
1379	sub signal($$) {	1510	sub signal($$) {
1380	AnyEvent->signal (signal => $_[0], cb => $_[1])	1511	AnyEvent->signal (signal => $_[0], cb => $_[1])
1381	}	1512	}
1382		1513
1383	sub child($$) {	1514	sub child($$) {
1384	AnyEvent->child (pid => $_[0], cb => $_[1])	1515	AnyEvent->child (pid => $_[0], cb => $_[1])
1385	}	1516	}
1386		1517
1387	sub idle($) {	1518	sub idle($) {
1388	AnyEvent->idle (cb => $_[0])	1519	AnyEvent->idle (cb => $_[0]);
1389	}	1520	}
1390		1521
1391	sub cv(;&) {	1522	sub cv(;&) {
1392	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())	1523	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1393	}	1524	}
1394		1525
1395	sub now() {	1526	sub now() {
1396	AnyEvent->now	1527	AnyEvent->now
1397	}	1528	}
1398		1529
1399	sub now_update() {	1530	sub now_update() {
1400	AnyEvent->now_update	1531	AnyEvent->now_update
1401	}	1532	}
1402		1533
1403	sub time() {	1534	sub time() {
1404	AnyEvent->time	1535	AnyEvent->time
		1536	}
		1537
		1538	*postpone = \&AnyEvent::postpone;
		1539	*log = \&AnyEvent::log;
		1540	};
		1541	die if $@;
1405	}	1542	}
		1543
		1544	BEGIN { _reset }
1406		1545
1407	package AnyEvent::Base;	1546	package AnyEvent::Base;
1408		1547
1409	# default implementations for many methods	1548	# default implementations for many methods
1410		1549
1411	sub time {	1550	sub time {
1412	eval q{ # poor man's autoloading {}	1551	eval q{ # poor man's autoloading {}
1413	# probe for availability of Time::HiRes	1552	# probe for availability of Time::HiRes
1414	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1553	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1415	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;	1554	AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."
		1555	if $AnyEvent::VERBOSE >= 8;
		1556	*time = sub { Time::HiRes::time () };
1416	*AE::time = \&Time::HiRes::time;	1557	*AE::time = \& Time::HiRes::time ;
1417	# if (eval "use POSIX (); (POSIX::times())...	1558	# if (eval "use POSIX (); (POSIX::times())...
1418	} else {	1559	} else {
1419	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;	1560	AnyEvent::log critical => "using built-in time(), WARNING, no sub-second resolution!";
		1561	*time = sub { CORE::time };
1420	*AE::time = sub (){ time }; # epic fail	1562	*AE::time = sub (){ CORE::time };
1421	}	1563	}
1422		1564
1423	*time = sub { AE::time }; # different prototypes	1565	*now = \&time;
1424	};	1566	};
1425	die if $@;	1567	die if $@;
1426		1568
1427	&time	1569	&time
1428	}	1570	}
1429		1571
1430	*now = \&time;	1572	*now = \&time;
1431
1432	sub now_update { }	1573	sub now_update { }
1433		1574
		1575	sub _poll {
		1576	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
		1577	}
		1578
1434	# default implementation for ->condvar	1579	# default implementation for ->condvar
		1580	# in fact, the default should not be overwritten
1435		1581
1436	sub condvar {	1582	sub condvar {
1437	eval q{ # poor man's autoloading {}	1583	eval q{ # poor man's autoloading {}
1438	*condvar = sub {	1584	*condvar = sub {
1439	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"	1585	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
…		…
1517		1663
1518	sub signal {	1664	sub signal {
1519	eval q{ # poor man's autoloading {}	1665	eval q{ # poor man's autoloading {}
1520	# probe for availability of Async::Interrupt	1666	# probe for availability of Async::Interrupt
1521	if (_have_async_interrupt) {	1667	if (_have_async_interrupt) {
1522	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;	1668	AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."
		1669	if $AnyEvent::VERBOSE >= 8;
1523		1670
1524	$SIGPIPE_R = new Async::Interrupt::EventPipe;	1671	$SIGPIPE_R = new Async::Interrupt::EventPipe;
1525	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;	1672	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1526		1673
1527	} else {	1674	} else {
1528	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;	1675	AnyEvent::log 8 => "using emulated perl signal handling with latency timer."
		1676	if $AnyEvent::VERBOSE >= 8;
1529		1677
1530	if (AnyEvent::WIN32) {	1678	if (AnyEvent::WIN32) {
1531	require AnyEvent::Util;	1679	require AnyEvent::Util;
1532		1680
1533	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();	1681	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
…		…
1609	: sysread $SIGPIPE_R, (my $dummy), 9;	1757	: sysread $SIGPIPE_R, (my $dummy), 9;
1610		1758
1611	while (%SIG_EV) {	1759	while (%SIG_EV) {
1612	for (keys %SIG_EV) {	1760	for (keys %SIG_EV) {
1613	delete $SIG_EV{$_};	1761	delete $SIG_EV{$_};
1614	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1762	&$_ for values %{ $SIG_CB{$_} \|\| {} };
1615	}	1763	}
1616	}	1764	}
1617	};	1765	};
1618	};	1766	};
1619	die if $@;	1767	die if $@;
…		…
1624	# default implementation for ->child	1772	# default implementation for ->child
1625		1773
1626	our %PID_CB;	1774	our %PID_CB;
1627	our $CHLD_W;	1775	our $CHLD_W;
1628	our $CHLD_DELAY_W;	1776	our $CHLD_DELAY_W;
1629	our $WNOHANG;
1630		1777
1631	# used by many Impl's	1778	# used by many Impl's
1632	sub _emit_childstatus($$) {	1779	sub _emit_childstatus($$) {
1633	my (undef, $rpid, $rstatus) = @_;	1780	my (undef, $rpid, $rstatus) = @_;
1634		1781
…		…
1641	eval q{ # poor man's autoloading {}	1788	eval q{ # poor man's autoloading {}
1642	*_sigchld = sub {	1789	*_sigchld = sub {
1643	my $pid;	1790	my $pid;
1644		1791
1645	AnyEvent->_emit_childstatus ($pid, $?)	1792	AnyEvent->_emit_childstatus ($pid, $?)
1646	while ($pid = waitpid -1, $WNOHANG) > 0;	1793	while ($pid = waitpid -1, WNOHANG) > 0;
1647	};	1794	};
1648		1795
1649	*child = sub {	1796	*child = sub {
1650	my (undef, %arg) = @_;	1797	my (undef, %arg) = @_;
1651		1798
1652	defined (my $pid = $arg{pid} + 0)	1799	my $pid = $arg{pid};
1653	or Carp::croak "required option 'pid' is missing";	1800	my $cb = $arg{cb};
1654		1801
1655	$PID_CB{$pid}{$arg{cb}} = $arg{cb};	1802	$PID_CB{$pid}{$cb+0} = $cb;
1656
1657	# WNOHANG is almost cetrainly 1 everywhere
1658	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/
1659	? 1
1660	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;
1661		1803
1662	unless ($CHLD_W) {	1804	unless ($CHLD_W) {
1663	$CHLD_W = AE::signal CHLD => \&_sigchld;	1805	$CHLD_W = AE::signal CHLD => \&_sigchld;
1664	# child could be a zombie already, so make at least one round	1806	# child could be a zombie already, so make at least one round
1665	&_sigchld;	1807	&_sigchld;
1666	}	1808	}
1667		1809
1668	bless [$pid, $arg{cb}], "AnyEvent::Base::child"	1810	bless [$pid, $cb+0], "AnyEvent::Base::child"
1669	};	1811	};
1670		1812
1671	*AnyEvent::Base::child::DESTROY = sub {	1813	*AnyEvent::Base::child::DESTROY = sub {
1672	my ($pid, $cb) = @{$_[0]};	1814	my ($pid, $icb) = @{$_[0]};
1673		1815
1674	delete $PID_CB{$pid}{$cb};	1816	delete $PID_CB{$pid}{$icb};
1675	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };	1817	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };
1676		1818
1677	undef $CHLD_W unless keys %PID_CB;	1819	undef $CHLD_W unless keys %PID_CB;
1678	};	1820	};
1679	};	1821	};
…		…
1692		1834
1693	my ($cb, $w, $rcb) = $arg{cb};	1835	my ($cb, $w, $rcb) = $arg{cb};
1694		1836
1695	$rcb = sub {	1837	$rcb = sub {
1696	if ($cb) {	1838	if ($cb) {
1697	$w = _time;	1839	$w = AE::time;
1698	&$cb;	1840	&$cb;
1699	$w = _time - $w;	1841	$w = AE::time - $w;
1700		1842
1701	# never use more then 50% of the time for the idle watcher,	1843	# never use more then 50% of the time for the idle watcher,
1702	# within some limits	1844	# within some limits
1703	$w = 0.0001 if $w < 0.0001;	1845	$w = 0.0001 if $w < 0.0001;
1704	$w = 5 if $w > 5;	1846	$w = 5 if $w > 5;
…		…
1751		1893
1752	sub _send {	1894	sub _send {
1753	# nop	1895	# nop
1754	}	1896	}
1755		1897
		1898	sub _wait {
		1899	AnyEvent->_poll until $_[0]{_ae_sent};
		1900	}
		1901
1756	sub send {	1902	sub send {
1757	my $cv = shift;	1903	my $cv = shift;
1758	$cv->{_ae_sent} = [@_];	1904	$cv->{_ae_sent} = [@_];
1759	(delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb};	1905	(delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb};
1760	$cv->_send;	1906	$cv->_send;
…		…
1767		1913
1768	sub ready {	1914	sub ready {
1769	$_[0]{_ae_sent}	1915	$_[0]{_ae_sent}
1770	}	1916	}
1771		1917
1772	sub _wait {
1773	$WAITING
1774	and !$_[0]{_ae_sent}
1775	and Carp::croak "AnyEvent::CondVar: recursive blocking wait detected";
1776
1777	local $WAITING = 1;
1778	AnyEvent->one_event while !$_[0]{_ae_sent};
1779	}
1780
1781	sub recv {	1918	sub recv {
		1919	unless ($_[0]{_ae_sent}) {
		1920	$WAITING
		1921	and Carp::croak "AnyEvent::CondVar: recursive blocking wait attempted";
		1922
		1923	local $WAITING = 1;
1782	$_[0]->_wait;	1924	$_[0]->_wait;
		1925	}
1783		1926
1784	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};	1927	$_[0]{_ae_croak}
1785	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]	1928	and Carp::croak $_[0]{_ae_croak};
		1929
		1930	wantarray
		1931	? @{ $_[0]{_ae_sent} }
		1932	: $_[0]{_ae_sent}[0]
1786	}	1933	}
1787		1934
1788	sub cb {	1935	sub cb {
1789	my $cv = shift;	1936	my $cv = shift;
1790		1937
…		…
1806	&{ $_[0]{_ae_end_cb} \|\| sub { $_[0]->send } };	1953	&{ $_[0]{_ae_end_cb} \|\| sub { $_[0]->send } };
1807	}	1954	}
1808		1955
1809	# undocumented/compatibility with pre-3.4	1956	# undocumented/compatibility with pre-3.4
1810	*broadcast = \&send;	1957	*broadcast = \&send;
1811	*wait = \&_wait;	1958	*wait = \&recv;
1812		1959
1813	=head1 ERROR AND EXCEPTION HANDLING	1960	=head1 ERROR AND EXCEPTION HANDLING
1814		1961
1815	In general, AnyEvent does not do any error handling - it relies on the	1962	In general, AnyEvent does not do any error handling - it relies on the
1816	caller to do that if required. The L<AnyEvent::Strict> module (see also	1963	caller to do that if required. The L<AnyEvent::Strict> module (see also
…		…
1843		1990
1844	By default, AnyEvent will be completely silent except in fatal	1991	By default, AnyEvent will be completely silent except in fatal
1845	conditions. You can set this environment variable to make AnyEvent more	1992	conditions. You can set this environment variable to make AnyEvent more
1846	talkative.	1993	talkative.
1847		1994
1848	When set to C<1> or higher, causes AnyEvent to warn about unexpected	1995	When set to C<5> or higher, causes AnyEvent to warn about unexpected
1849	conditions, such as not being able to load the event model specified by	1996	conditions, such as not being able to load the event model specified by
1850	C<PERL_ANYEVENT_MODEL>.	1997	C<PERL_ANYEVENT_MODEL>.
1851		1998
1852	When set to C<2> or higher, cause AnyEvent to report to STDERR which event	1999	When set to C<7> or higher, cause AnyEvent to report to STDERR which event
1853	model it chooses.	2000	model it chooses.
1854		2001
1855	When set to C<8> or higher, then AnyEvent will report extra information on	2002	When set to C<8> or higher, then AnyEvent will report extra information on
1856	which optional modules it loads and how it implements certain features.	2003	which optional modules it loads and how it implements certain features.
1857		2004
…		…
1868	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>	2015	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1869	>>, it is definitely recommended to keep it off in production. Keeping	2016	>>, it is definitely recommended to keep it off in production. Keeping
1870	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs	2017	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1871	can be very useful, however.	2018	can be very useful, however.
1872		2019
		2020	=item C<PERL_ANYEVENT_DEBUG_SHELL>
		2021
		2022	If this env variable is set, then its contents will be interpreted by
		2023	C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of
		2024	C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on
		2025	that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>.
		2026
		2027	This takes place when the first watcher is created.
		2028
		2029	For example, to bind a debug shell on a unix domain socket in
		2030	F<< /tmp/debug<pid>.sock >>, you could use this:
		2031
		2032	PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
		2033
		2034	Note that creating sockets in F</tmp> is very unsafe on multiuser
		2035	systems.
		2036
		2037	=item C<PERL_ANYEVENT_DEBUG_WRAP>
		2038
		2039	Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
		2040	debugging purposes. See C<AnyEvent::Debug::wrap> for details.
		2041
1873	=item C<PERL_ANYEVENT_MODEL>	2042	=item C<PERL_ANYEVENT_MODEL>
1874		2043
1875	This can be used to specify the event model to be used by AnyEvent, before	2044	This can be used to specify the event model to be used by AnyEvent, before
1876	auto detection and -probing kicks in. It must be a string consisting	2045	auto detection and -probing kicks in.
1877	entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended	2046
		2047	It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
		2048	or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1878	and the resulting module name is loaded and if the load was successful,	2049	resulting module name is loaded and - if the load was successful - used as
1879	used as event model. If it fails to load AnyEvent will proceed with	2050	event model backend. If it fails to load then AnyEvent will proceed with
1880	auto detection and -probing.	2051	auto detection and -probing.
1881		2052
1882	This functionality might change in future versions.	2053	If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
		2054	nothing gets prepended and the module name is used as-is (hint: C<::> at
		2055	the end of a string designates a module name and quotes it appropriately).
1883		2056
1884	For example, to force the pure perl model (L<AnyEvent::Impl::Perl>) you	2057	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1885	could start your program like this:	2058	could start your program like this:
1886		2059
1887	PERL_ANYEVENT_MODEL=Perl perl ...	2060	PERL_ANYEVENT_MODEL=Perl perl ...
1888		2061
1889	=item C<PERL_ANYEVENT_PROTOCOLS>	2062	=item C<PERL_ANYEVENT_PROTOCOLS>
…		…
2279	(even when used without AnyEvent), but most event loops have acceptable	2452	(even when used without AnyEvent), but most event loops have acceptable
2280	performance with or without AnyEvent.	2453	performance with or without AnyEvent.
2281		2454
2282	=item * The overhead AnyEvent adds is usually much smaller than the overhead of	2455	=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2283	the actual event loop, only with extremely fast event loops such as EV	2456	the actual event loop, only with extremely fast event loops such as EV
2284	adds AnyEvent significant overhead.	2457	does AnyEvent add significant overhead.
2285		2458
2286	=item * You should avoid POE like the plague if you want performance or	2459	=item * You should avoid POE like the plague if you want performance or
2287	reasonable memory usage.	2460	reasonable memory usage.
2288		2461
2289	=back	2462	=back
…		…
2588		2761
2589	=item L<Time::HiRes>	2762	=item L<Time::HiRes>
2590		2763
2591	This module is part of perl since release 5.008. It will be used when the	2764	This module is part of perl since release 5.008. It will be used when the
2592	chosen event library does not come with a timing source of its own. The	2765	chosen event library does not come with a timing source of its own. The
2593	pure-perl event loop (L<AnyEvent::Impl::Perl>) will additionally use it to	2766	pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to
2594	try to use a monotonic clock for timing stability.	2767	try to use a monotonic clock for timing stability.
2595		2768
2596	=back	2769	=back
2597		2770
2598		2771
…		…
2664		2837
2665	Tutorial/Introduction: L<AnyEvent::Intro>.	2838	Tutorial/Introduction: L<AnyEvent::Intro>.
2666		2839
2667	FAQ: L<AnyEvent::FAQ>.	2840	FAQ: L<AnyEvent::FAQ>.
2668		2841
2669	Utility functions: L<AnyEvent::Util>.	2842	Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
		2843	(simply logging).
2670		2844
2671	Event modules: L<EV>, L<EV::Glib>, L<Glib::EV>, L<Event>, L<Glib::Event>,	2845	Development/Debugging: L<AnyEvent::Strict> (stricter checking),
2672	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2846	L<AnyEvent::Debug> (interactive shell, watcher tracing).
		2847
		2848	Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
		2849	L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
		2850	L<Qt>, L<POE>, L<FLTK>.
2673		2851
2674	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2852	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2675	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2853	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2676	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2854	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2677	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>.	2855	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
		2856	L<AnyEvent::Impl::FLTK>.
2678		2857
2679	Non-blocking file handles, sockets, TCP clients and	2858	Non-blocking handles, pipes, stream sockets, TCP clients and
2680	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.	2859	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2681		2860
2682	Asynchronous DNS: L<AnyEvent::DNS>.	2861	Asynchronous DNS: L<AnyEvent::DNS>.
2683		2862
2684	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV L<Coro::Event >,	2863	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.
2685		2864
2686	Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>,	2865	Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>,
2687	L<AnyEvent::HTTP>.	2866	L<AnyEvent::HTTP>.
2688		2867
2689		2868

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.334 by root, Tue Oct 12 06:51:15 2010 UTC vs. Revision 1.370 by root, Wed Aug 17 02:50:35 2011 UTC

Diff Legend

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.334 by root, Tue Oct 12 06:51:15 2010 UTC vs.
Revision 1.370 by root, Wed Aug 17 02:50:35 2011 UTC