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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.351 by root, Tue Aug 2 22:07:16 2011 UTC vs.
Revision 1.373 by root, Thu Aug 25 03:08:48 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
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
…		…
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
…		…
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.	881	AnyEvent::Impl::IOAsync based on IO::Async.
882	AnyEvent::Impl::Cocoa based on Cocoa::EventLoop.	882	AnyEvent::Impl::Cocoa based on Cocoa::EventLoop.
883	AnyEvent::Impl::FLTK based on FLTK.	883	AnyEvent::Impl::FLTK2 based on FLTK (fltk 2 binding).
884		884
885	=item Backends with special needs.	885	=item Backends with special needs.
886		886
887	Qt requires the Qt::Application to be instantiated first, but will	887	Qt requires the Qt::Application to be instantiated first, but will
888	otherwise be picked up automatically. As long as the main program	888	otherwise be picked up automatically. As long as the main program
…		…
933		933
934	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model	934	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model
935	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
936	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
937	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).
938		942
939	If you need to do some initialisation before AnyEvent watchers are	943	If you need to do some initialisation before AnyEvent watchers are
940	created, use C<post_detect>.	944	created, use C<post_detect>.
941		945
942	=item $guard = AnyEvent::post_detect { BLOCK }	946	=item $guard = AnyEvent::post_detect { BLOCK }
…		…
1005	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent	1009	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent
1006	# as soon as it is	1010	# as soon as it is
1007	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };	1011	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };
1008	}	1012	}
1009		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
1010	=back	1064	=back
1011		1065
1012	=head1 WHAT TO DO IN A MODULE	1066	=head1 WHAT TO DO IN A MODULE
1013		1067
1014	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
…		…
1047	modules might create watchers when they are loaded, and AnyEvent will	1101	modules might create watchers when they are loaded, and AnyEvent will
1048	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
1049	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.
1050		1104
1051	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
1052	C<AnyEvent::Impl::Perl> module, which gives you similar behaviour	1106	C<AnyEvent::Loop> module, which gives you similar behaviour
1053	everywhere, but letting AnyEvent chose the model is generally better.	1107	everywhere, but letting AnyEvent chose the model is generally better.
1054		1108
1055	=head2 MAINLOOP EMULATION	1109	=head2 MAINLOOP EMULATION
1056		1110
1057	Sometimes (often for short test scripts, or even standalone programs who	1111	Sometimes (often for short test scripts, or even standalone programs who
…		…
1070		1124
1071		1125
1072	=head1 OTHER MODULES	1126	=head1 OTHER MODULES
1073		1127
1074	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
1075	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
1076	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
1077	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 :)
1078		1135
1079	=over 4	1136	=over 4
1080		1137
1081	=item L<AnyEvent::Util>	1138	=item L<AnyEvent::Util>
1082		1139
…		…
1162		1219
1163	BEGIN { AnyEvent::common_sense }	1220	BEGIN { AnyEvent::common_sense }
1164		1221
1165	use Carp ();	1222	use Carp ();
1166		1223
1167	our $VERSION = '5.34';	1224	our $VERSION = '6.01';
1168	our $MODEL;	1225	our $MODEL;
1169		1226
1170	our $AUTOLOAD;
1171	our @ISA;	1227	our @ISA;
1172		1228
1173	our @REGISTRY;	1229	our @REGISTRY;
1174		1230
1175	our $VERBOSE;	1231	our $VERBOSE;
…		…
1180	eval "sub TAINT (){" . (${^TAINT}*1) . "}";	1236	eval "sub TAINT (){" . (${^TAINT}*1) . "}";
1181		1237
1182	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}	1238	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1183	if ${^TAINT};	1239	if ${^TAINT};
1184		1240
		1241	$ENV{"PERL_ANYEVENT_$_"} = $ENV{"AE_$_"}
		1242	for grep s/^AE_// && !exists $ENV{"PERL_ANYEVENT_$_"}, keys %ENV;
		1243
		1244	@ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = ()
		1245	if ${^TAINT};
		1246
1185	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;	1247	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
1186
1187	}	1248	}
1188		1249
1189	our $MAX_SIGNAL_LATENCY = 10;	1250	our $MAX_SIGNAL_LATENCY = 10;
1190		1251
1191	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred	1252	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred
…		…
1195	$PROTOCOL{$_} = ++$idx	1256	$PROTOCOL{$_} = ++$idx
1196	for reverse split /\s,\s/,	1257	for reverse split /\s,\s/,
1197	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1258	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1198	}	1259	}
1199		1260
		1261	our @post_detect;
		1262
		1263	sub post_detect(&) {
		1264	my ($cb) = @_;
		1265
		1266	push @post_detect, $cb;
		1267
		1268	defined wantarray
		1269	? bless \$cb, "AnyEvent::Util::postdetect"
		1270	: ()
		1271	}
		1272
		1273	sub AnyEvent::Util::postdetect::DESTROY {
		1274	@post_detect = grep $_ != ${$_[0]}, @post_detect;
		1275	}
		1276
		1277	our $POSTPONE_W;
		1278	our @POSTPONE;
		1279
		1280	sub _postpone_exec {
		1281	undef $POSTPONE_W;
		1282
		1283	&{ shift @POSTPONE }
		1284	while @POSTPONE;
		1285	}
		1286
		1287	sub postpone(&) {
		1288	push @POSTPONE, shift;
		1289
		1290	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
		1291
		1292	()
		1293	}
		1294
		1295	sub log($$;@) {
		1296	# only load the bug bloated module when we actually are about to log something
		1297	if ($_[0] <= $VERBOSE) {
		1298	require AnyEvent::Log;
		1299	# AnyEvent::Log overwrites this function
		1300	goto &log;
		1301	}
		1302	}
		1303
		1304	if (length $ENV{PERL_ANYEVENT_LOG}) {
		1305	require AnyEvent::Log; # AnyEvent::Log does the thing for us
		1306	}
		1307
1200	my @models = (	1308	our @models = (
1201	[EV:: => AnyEvent::Impl::EV:: , 1],	1309	[EV:: => AnyEvent::Impl::EV:: , 1],
1202	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],	1310	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1203	# everything below here will not (normally) be autoprobed	1311	# everything below here will not (normally) be autoprobed
1204	# as the pureperl backend should work everywhere	1312	# as the pure perl backend should work everywhere
1205	# and is usually faster	1313	# and is usually faster
1206	[Event:: => AnyEvent::Impl::Event::, 1],	1314	[Event:: => AnyEvent::Impl::Event::, 1],
1207	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers	1315	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers
1208	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1316	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
1209	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package	1317	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1210	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1318	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1211	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1319	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1212	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1320	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1213	[Wx:: => AnyEvent::Impl::POE::],	1321	[Wx:: => AnyEvent::Impl::POE::],
1214	[Prima:: => AnyEvent::Impl::POE::],	1322	[Prima:: => AnyEvent::Impl::POE::],
1215	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::],	1323	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1216	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],	1324	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1217	[FLTK:: => AnyEvent::Impl::FLTK::],	1325	[FLTK:: => AnyEvent::Impl::FLTK2::],
1218	);	1326	);
1219		1327
1220	our %method = map +($_ => 1),	1328	our @isa_hook;
		1329
		1330	sub _isa_set {
		1331	my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
		1332
		1333	@{"$pkg[$_-1]::ISA"} = $pkg[$_]
		1334	for 1 .. $#pkg;
		1335
		1336	grep $_ && $_->[1], @isa_hook
		1337	and AE::_reset ();
		1338	}
		1339
		1340	# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
		1341	sub _isa_hook($$;$) {
		1342	my ($i, $pkg, $reset_ae) = @_;
		1343
		1344	$isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
		1345
		1346	_isa_set;
		1347	}
		1348
		1349	# all autoloaded methods reserve the complete glob, not just the method slot.
		1350	# due to bugs in perls method cache implementation.
1221	qw(io timer time now now_update signal child idle condvar DESTROY);	1351	our @methods = qw(io timer time now now_update signal child idle condvar);
1222
1223	our @post_detect;
1224
1225	sub post_detect(&) {
1226	my ($cb) = @_;
1227
1228	push @post_detect, $cb;
1229
1230	defined wantarray
1231	? bless \$cb, "AnyEvent::Util::postdetect"
1232	: ()
1233	}
1234
1235	sub AnyEvent::Util::postdetect::DESTROY {
1236	@post_detect = grep $_ != ${$_[0]}, @post_detect;
1237	}
1238		1352
1239	sub detect() {	1353	sub detect() {
		1354	return $MODEL if $MODEL; # some programs keep references to detect
		1355
		1356	local $!; # for good measure
		1357	local $SIG{__DIE__}; # we use eval
		1358
1240	# free some memory	1359	# free some memory
1241	*detect = sub () { $MODEL };	1360	*detect = sub () { $MODEL };
		1361	# undef &func doesn't correctly update the method cache. grmbl.
		1362	# so we delete the whole glob. grmbl.
		1363	# otoh, perl doesn't let me undef an active usb, but it lets me free
		1364	# a glob with an active sub. hrm. i hope it works, but perl is
		1365	# usually buggy in this department. sigh.
		1366	delete @{"AnyEvent::"}{@methods};
		1367	undef @methods;
1242		1368
1243	local $!; # for good measure
1244	local $SIG{__DIE__};
1245
1246	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1369	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1247	my $model = "AnyEvent::Impl::$1";	1370	my $model = $1;
		1371	$model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1248	if (eval "require $model") {	1372	if (eval "require $model") {
		1373	AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.";
1249	$MODEL = $model;	1374	$MODEL = $model;
1250	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;
1251	} else {	1375	} else {
1252	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;	1376	AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1253	}	1377	}
1254	}	1378	}
1255		1379
1256	# check for already loaded models	1380	# check for already loaded models
1257	unless ($MODEL) {	1381	unless ($MODEL) {
1258	for (@REGISTRY, @models) {	1382	for (@REGISTRY, @models) {
1259	my ($package, $model) = @$_;	1383	my ($package, $model) = @$_;
1260	if (${"$package\::VERSION"} > 0) {	1384	if (${"$package\::VERSION"} > 0) {
1261	if (eval "require $model") {	1385	if (eval "require $model") {
		1386	AnyEvent::log 7 => "autodetected model '$model', using it.";
1262	$MODEL = $model;	1387	$MODEL = $model;
1263	warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2;
1264	last;	1388	last;
1265	}	1389	}
1266	}	1390	}
1267	}	1391	}
1268		1392
…		…
1274	$autoload	1398	$autoload
1275	and eval "require $package"	1399	and eval "require $package"
1276	and ${"$package\::VERSION"} > 0	1400	and ${"$package\::VERSION"} > 0
1277	and eval "require $model"	1401	and eval "require $model"
1278	) {	1402	) {
		1403	AnyEvent::log 7 => "autoloaded model '$model', using it.";
1279	$MODEL = $model;	1404	$MODEL = $model;
1280	warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2;
1281	last;	1405	last;
1282	}	1406	}
1283	}	1407	}
1284		1408
1285	$MODEL	1409	$MODEL
1286	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n";	1410	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1287	}	1411	}
1288	}	1412	}
1289		1413
1290	@models = (); # free probe data	1414	# free memory only needed for probing
		1415	undef @models;
		1416	undef @REGISTRY;
1291		1417
1292	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1418	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1293	unshift @ISA, $MODEL;
1294		1419
1295	# now nuke some methods that are overridden by the backend.	1420	# now nuke some methods that are overridden by the backend.
1296	# SUPER is not allowed.	1421	# SUPER usage is not allowed in these.
1297	for (qw(time signal child idle)) {	1422	for (qw(time signal child idle)) {
1298	undef &{"AnyEvent::Base::$_"}	1423	undef &{"AnyEvent::Base::$_"}
1299	if defined &{"$MODEL\::$_"};	1424	if defined &{"$MODEL\::$_"};
1300	}	1425	}
1301		1426
		1427	_isa_set;
		1428
		1429	# we're officially open!
		1430
1302	if ($ENV{PERL_ANYEVENT_STRICT}) {	1431	if ($ENV{PERL_ANYEVENT_STRICT}) {
1303	eval { require AnyEvent::Strict };	1432	require AnyEvent::Strict;
1304	warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1305	if $@ && $VERBOSE;
1306	}	1433	}
1307		1434
		1435	if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
		1436	require AnyEvent::Debug;
		1437	AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
		1438	}
		1439
		1440	if (length $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
		1441	require AnyEvent::Socket;
		1442	require AnyEvent::Debug;
		1443
		1444	my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
		1445	$shell =~ s/\$\$/$$/g;
		1446
		1447	my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
		1448	$AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
		1449	}
		1450
		1451	# now the anyevent environment is set up as the user told us to, so
		1452	# call the actual user code - post detects
		1453
1308	(shift @post_detect)->() while @post_detect;	1454	(shift @post_detect)->() while @post_detect;
		1455	undef @post_detect;
1309		1456
1310	*post_detect = sub(&) {	1457	*post_detect = sub(&) {
1311	shift->();	1458	shift->();
1312		1459
1313	undef	1460	undef
1314	};	1461	};
1315		1462
1316	$MODEL	1463	$MODEL
1317	}	1464	}
1318		1465
1319	sub AUTOLOAD {	1466	for my $name (@methods) {
1320	(my $func = $AUTOLOAD) =~ s/.*://;	1467	*$name = sub {
1321
1322	$method{$func}
1323	or Carp::croak "$func: not a valid AnyEvent class method";
1324
1325	detect;	1468	detect;
1326		1469	# we use goto because
1327	my $class = shift;	1470	# a) it makes the thunk more transparent
1328	$class->$func (@_);	1471	# b) it allows us to delete the thunk later
		1472	goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
		1473	};
1329	}	1474	}
1330		1475
1331	# utility function to dup a filehandle. this is used by many backends	1476	# utility function to dup a filehandle. this is used by many backends
1332	# to support binding more than one watcher per filehandle (they usually	1477	# to support binding more than one watcher per filehandle (they usually
1333	# allow only one watcher per fd, so we dup it to get a different one).	1478	# allow only one watcher per fd, so we dup it to get a different one).
…		…
1357		1502
1358	package AE;	1503	package AE;
1359		1504
1360	our $VERSION = $AnyEvent::VERSION;	1505	our $VERSION = $AnyEvent::VERSION;
1361		1506
		1507	sub _reset() {
		1508	eval q{
1362	# fall back to the main API by default - backends and AnyEvent::Base	1509	# fall back to the main API by default - backends and AnyEvent::Base
1363	# implementations can overwrite these.	1510	# implementations can overwrite these.
1364		1511
1365	sub io($$$) {	1512	sub io($$$) {
1366	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])	1513	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1367	}	1514	}
1368		1515
1369	sub timer($$$) {	1516	sub timer($$$) {
1370	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])	1517	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1371	}	1518	}
1372		1519
1373	sub signal($$) {	1520	sub signal($$) {
1374	AnyEvent->signal (signal => $_[0], cb => $_[1])	1521	AnyEvent->signal (signal => $_[0], cb => $_[1])
1375	}	1522	}
1376		1523
1377	sub child($$) {	1524	sub child($$) {
1378	AnyEvent->child (pid => $_[0], cb => $_[1])	1525	AnyEvent->child (pid => $_[0], cb => $_[1])
1379	}	1526	}
1380		1527
1381	sub idle($) {	1528	sub idle($) {
1382	AnyEvent->idle (cb => $_[0])	1529	AnyEvent->idle (cb => $_[0]);
1383	}	1530	}
1384		1531
1385	sub cv(;&) {	1532	sub cv(;&) {
1386	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())	1533	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1387	}	1534	}
1388		1535
1389	sub now() {	1536	sub now() {
1390	AnyEvent->now	1537	AnyEvent->now
1391	}	1538	}
1392		1539
1393	sub now_update() {	1540	sub now_update() {
1394	AnyEvent->now_update	1541	AnyEvent->now_update
1395	}	1542	}
1396		1543
1397	sub time() {	1544	sub time() {
1398	AnyEvent->time	1545	AnyEvent->time
		1546	}
		1547
		1548	*postpone = \&AnyEvent::postpone;
		1549	*log = \&AnyEvent::log;
		1550	};
		1551	die if $@;
1399	}	1552	}
		1553
		1554	BEGIN { _reset }
1400		1555
1401	package AnyEvent::Base;	1556	package AnyEvent::Base;
1402		1557
1403	# default implementations for many methods	1558	# default implementations for many methods
1404		1559
1405	sub time {	1560	sub time {
1406	eval q{ # poor man's autoloading {}	1561	eval q{ # poor man's autoloading {}
1407	# probe for availability of Time::HiRes	1562	# probe for availability of Time::HiRes
1408	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1563	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1409	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;	1564	AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."
		1565	if $AnyEvent::VERBOSE >= 8;
		1566	*time = sub { Time::HiRes::time () };
1410	*AE::time = \&Time::HiRes::time;	1567	*AE::time = \& Time::HiRes::time ;
1411	# if (eval "use POSIX (); (POSIX::times())...	1568	# if (eval "use POSIX (); (POSIX::times())...
1412	} else {	1569	} else {
1413	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;	1570	AnyEvent::log critical => "using built-in time(), WARNING, no sub-second resolution!";
		1571	*time = sub { CORE::time };
1414	*AE::time = sub (){ time }; # epic fail	1572	*AE::time = sub (){ CORE::time };
1415	}	1573	}
1416		1574
1417	*time = sub { AE::time }; # different prototypes	1575	*now = \&time;
1418	};	1576	};
1419	die if $@;	1577	die if $@;
1420		1578
1421	&time	1579	&time
1422	}	1580	}
1423		1581
1424	*now = \&time;	1582	*now = \&time;
1425
1426	sub now_update { }	1583	sub now_update { }
1427		1584
		1585	sub _poll {
		1586	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
		1587	}
		1588
1428	# default implementation for ->condvar	1589	# default implementation for ->condvar
		1590	# in fact, the default should not be overwritten
1429		1591
1430	sub condvar {	1592	sub condvar {
1431	eval q{ # poor man's autoloading {}	1593	eval q{ # poor man's autoloading {}
1432	*condvar = sub {	1594	*condvar = sub {
1433	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"	1595	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
…		…
1511		1673
1512	sub signal {	1674	sub signal {
1513	eval q{ # poor man's autoloading {}	1675	eval q{ # poor man's autoloading {}
1514	# probe for availability of Async::Interrupt	1676	# probe for availability of Async::Interrupt
1515	if (_have_async_interrupt) {	1677	if (_have_async_interrupt) {
1516	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;	1678	AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."
		1679	if $AnyEvent::VERBOSE >= 8;
1517		1680
1518	$SIGPIPE_R = new Async::Interrupt::EventPipe;	1681	$SIGPIPE_R = new Async::Interrupt::EventPipe;
1519	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;	1682	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1520		1683
1521	} else {	1684	} else {
1522	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;	1685	AnyEvent::log 8 => "using emulated perl signal handling with latency timer."
		1686	if $AnyEvent::VERBOSE >= 8;
1523		1687
1524	if (AnyEvent::WIN32) {	1688	if (AnyEvent::WIN32) {
1525	require AnyEvent::Util;	1689	require AnyEvent::Util;
1526		1690
1527	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();	1691	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
…		…
1603	: sysread $SIGPIPE_R, (my $dummy), 9;	1767	: sysread $SIGPIPE_R, (my $dummy), 9;
1604		1768
1605	while (%SIG_EV) {	1769	while (%SIG_EV) {
1606	for (keys %SIG_EV) {	1770	for (keys %SIG_EV) {
1607	delete $SIG_EV{$_};	1771	delete $SIG_EV{$_};
1608	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1772	&$_ for values %{ $SIG_CB{$_} \|\| {} };
1609	}	1773	}
1610	}	1774	}
1611	};	1775	};
1612	};	1776	};
1613	die if $@;	1777	die if $@;
…		…
1680		1844
1681	my ($cb, $w, $rcb) = $arg{cb};	1845	my ($cb, $w, $rcb) = $arg{cb};
1682		1846
1683	$rcb = sub {	1847	$rcb = sub {
1684	if ($cb) {	1848	if ($cb) {
1685	$w = _time;	1849	$w = AE::time;
1686	&$cb;	1850	&$cb;
1687	$w = _time - $w;	1851	$w = AE::time - $w;
1688		1852
1689	# never use more then 50% of the time for the idle watcher,	1853	# never use more then 50% of the time for the idle watcher,
1690	# within some limits	1854	# within some limits
1691	$w = 0.0001 if $w < 0.0001;	1855	$w = 0.0001 if $w < 0.0001;
1692	$w = 5 if $w > 5;	1856	$w = 5 if $w > 5;
…		…
1740	sub _send {	1904	sub _send {
1741	# nop	1905	# nop
1742	}	1906	}
1743		1907
1744	sub _wait {	1908	sub _wait {
1745	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";	1909	AnyEvent->_poll until $_[0]{_ae_sent};
1746	}	1910	}
1747		1911
1748	sub send {	1912	sub send {
1749	my $cv = shift;	1913	my $cv = shift;
1750	$cv->{_ae_sent} = [@_];	1914	$cv->{_ae_sent} = [@_];
…		…
1762	}	1926	}
1763		1927
1764	sub recv {	1928	sub recv {
1765	unless ($_[0]{_ae_sent}) {	1929	unless ($_[0]{_ae_sent}) {
1766	$WAITING	1930	$WAITING
1767	and Carp::croak "AnyEvent::CondVar: recursive blocking wait detected";	1931	and Carp::croak "AnyEvent::CondVar: recursive blocking wait attempted";
1768		1932
1769	local $WAITING = 1;	1933	local $WAITING = 1;
1770	$_[0]->_wait;	1934	$_[0]->_wait;
1771	}	1935	}
1772		1936
…		…
1821	$Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and	1985	$Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and
1822	so on.	1986	so on.
1823		1987
1824	=head1 ENVIRONMENT VARIABLES	1988	=head1 ENVIRONMENT VARIABLES
1825		1989
1826	The following environment variables are used by this module or its	1990	AnyEvent supports a number of environment variables that tune the
1827	submodules.	1991	runtime behaviour. They are usually evaluated when AnyEvent is
		1992	loaded, initialised, or a submodule that uses them is loaded. Many of
		1993	them also cause AnyEvent to load additional modules - for example,
		1994	C<PERL_ANYEVENT_DEBUG_WRAP> causes the L<AnyEvent::Debug> module to be
		1995	loaded.
1828		1996
1829	Note that AnyEvent will remove I<all> environment variables starting with	1997	All the environment variables documented here start with
1830	C<PERL_ANYEVENT_> from C<%ENV> when it is loaded while taint mode is	1998	C<PERL_ANYEVENT_>, which is what AnyEvent considers its own
1831	enabled.	1999	namespace. Other modules are encouraged (but by no means required) to use
		2000	C<PERL_ANYEVENT_SUBMODULE> if they have registered the AnyEvent::Submodule
		2001	namespace on CPAN, for any submodule. For example, L<AnyEvent::HTTP> could
		2002	be expected to use C<PERL_ANYEVENT_HTTP_PROXY> (it should not access env
		2003	variables starting with C<AE_>, see below).
		2004
		2005	All variables can also be set via the C<AE_> prefix, that is, instead
		2006	of setting C<PERL_ANYEVENT_VERBOSE> you can also set C<AE_VERBOSE>. In
		2007	case there is a clash btween anyevent and another program that uses
		2008	C<AE_something> you can set the corresponding C<PERL_ANYEVENT_something>
		2009	variable to the empty string, as those variables take precedence.
		2010
		2011	When AnyEvent is first loaded, it copies all C<AE_xxx> env variables
		2012	to their C<PERL_ANYEVENT_xxx> counterpart unless that variable already
		2013	exists. If taint mode is on, then AnyEvent will remove I<all> environment
		2014	variables starting with C<PERL_ANYEVENT_> from C<%ENV> (or replace them
		2015	with C<undef> or the empty string, if the corresaponding C<AE_> variable
		2016	is set).
		2017
		2018	The exact algorithm is currently:
		2019
		2020	1. if taint mode enabled, delete all PERL_ANYEVENT_xyz variables from %ENV
		2021	2. copy over AE_xyz to PERL_ANYEVENT_xyz unless the latter alraedy exists
		2022	3. if taint mode enabled, set all PERL_ANYEVENT_xyz variables to undef.
		2023
		2024	This ensures that child processes will not see the C<AE_> variables.
		2025
		2026	The following environment variables are currently known to AnyEvent:
1832		2027
1833	=over 4	2028	=over 4
1834		2029
1835	=item C<PERL_ANYEVENT_VERBOSE>	2030	=item C<PERL_ANYEVENT_VERBOSE>
1836		2031
1837	By default, AnyEvent will be completely silent except in fatal	2032	By default, AnyEvent will be completely silent except in fatal
1838	conditions. You can set this environment variable to make AnyEvent more	2033	conditions. You can set this environment variable to make AnyEvent more
1839	talkative.	2034	talkative. If you want to do more than just set the global logging level
		2035	you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more
		2036	complex specifications.
1840		2037
1841	When set to C<1> or higher, causes AnyEvent to warn about unexpected	2038	When set to C<5> or higher, causes AnyEvent to warn about unexpected
1842	conditions, such as not being able to load the event model specified by	2039	conditions, such as not being able to load the event model specified by
1843	C<PERL_ANYEVENT_MODEL>.	2040	C<PERL_ANYEVENT_MODEL>.
1844		2041
1845	When set to C<2> or higher, cause AnyEvent to report to STDERR which event	2042	When set to C<7> or higher, cause AnyEvent to report to STDERR which event
1846	model it chooses.	2043	model it chooses.
1847		2044
1848	When set to C<8> or higher, then AnyEvent will report extra information on	2045	When set to C<8> or higher, then AnyEvent will report extra information on
1849	which optional modules it loads and how it implements certain features.	2046	which optional modules it loads and how it implements certain features.
		2047
		2048	=item C<PERL_ANYEVENT_LOG>
		2049
		2050	Accepts rather complex logging specifications. For example, you could log
		2051	all C<debug> messages of some module to stderr, warnings and above to
		2052	stderr, and errors and above to syslog, with:
		2053
		2054	PERL_ANYEVENT_LOG=Some::Module=debug,+log:filter=warn,+%syslog:%syslog=error,syslog
		2055
		2056	For the rather extensive details, see L<AnyEvent::Log>.
		2057
		2058	Note that specifying this environment variable causes the L<AnyEvent::Log>
		2059	module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only
		2060	using the latter saves a few hundred kB of memory until the first message
		2061	is being logged.
1850		2062
1851	=item C<PERL_ANYEVENT_STRICT>	2063	=item C<PERL_ANYEVENT_STRICT>
1852		2064
1853	AnyEvent does not do much argument checking by default, as thorough	2065	AnyEvent does not do much argument checking by default, as thorough
1854	argument checking is very costly. Setting this variable to a true value	2066	argument checking is very costly. Setting this variable to a true value
…		…
1861	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>	2073	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1862	>>, it is definitely recommended to keep it off in production. Keeping	2074	>>, it is definitely recommended to keep it off in production. Keeping
1863	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs	2075	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1864	can be very useful, however.	2076	can be very useful, however.
1865		2077
		2078	=item C<PERL_ANYEVENT_DEBUG_SHELL>
		2079
		2080	If this env variable is set, then its contents will be interpreted by
		2081	C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of
		2082	C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on
		2083	that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>.
		2084
		2085	This takes place when the first watcher is created.
		2086
		2087	For example, to bind a debug shell on a unix domain socket in
		2088	F<< /tmp/debug<pid>.sock >>, you could use this:
		2089
		2090	PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
		2091
		2092	Note that creating sockets in F</tmp> is very unsafe on multiuser
		2093	systems.
		2094
		2095	=item C<PERL_ANYEVENT_DEBUG_WRAP>
		2096
		2097	Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
		2098	debugging purposes. See C<AnyEvent::Debug::wrap> for details.
		2099
1866	=item C<PERL_ANYEVENT_MODEL>	2100	=item C<PERL_ANYEVENT_MODEL>
1867		2101
1868	This can be used to specify the event model to be used by AnyEvent, before	2102	This can be used to specify the event model to be used by AnyEvent, before
1869	auto detection and -probing kicks in. It must be a string consisting	2103	auto detection and -probing kicks in.
1870	entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended	2104
		2105	It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
		2106	or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1871	and the resulting module name is loaded and if the load was successful,	2107	resulting module name is loaded and - if the load was successful - used as
1872	used as event model. If it fails to load AnyEvent will proceed with	2108	event model backend. If it fails to load then AnyEvent will proceed with
1873	auto detection and -probing.	2109	auto detection and -probing.
1874		2110
1875	This functionality might change in future versions.	2111	If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
		2112	nothing gets prepended and the module name is used as-is (hint: C<::> at
		2113	the end of a string designates a module name and quotes it appropriately).
1876		2114
1877	For example, to force the pure perl model (L<AnyEvent::Impl::Perl>) you	2115	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1878	could start your program like this:	2116	could start your program like this:
1879		2117
1880	PERL_ANYEVENT_MODEL=Perl perl ...	2118	PERL_ANYEVENT_MODEL=Perl perl ...
1881		2119
1882	=item C<PERL_ANYEVENT_PROTOCOLS>	2120	=item C<PERL_ANYEVENT_PROTOCOLS>
…		…
1898	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>	2136	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>
1899	- only support IPv4, never try to resolve or contact IPv6	2137	- only support IPv4, never try to resolve or contact IPv6
1900	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or	2138	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or
1901	IPv6, but prefer IPv6 over IPv4.	2139	IPv6, but prefer IPv6 over IPv4.
1902		2140
		2141	=item C<PERL_ANYEVENT_HOSTS>
		2142
		2143	This variable, if specified, overrides the F</etc/hosts> file used by
		2144	L<AnyEvent::Socket>C<::resolve_sockaddr>, i.e. hosts aliases will be read
		2145	from that file instead.
		2146
1903	=item C<PERL_ANYEVENT_EDNS0>	2147	=item C<PERL_ANYEVENT_EDNS0>
1904		2148
1905	Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension	2149	Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension for
1906	for DNS. This extension is generally useful to reduce DNS traffic, but	2150	DNS. This extension is generally useful to reduce DNS traffic, especially
1907	some (broken) firewalls drop such DNS packets, which is why it is off by	2151	when DNSSEC is involved, but some (broken) firewalls drop such DNS
1908	default.	2152	packets, which is why it is off by default.
1909		2153
1910	Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce	2154	Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce
1911	EDNS0 in its DNS requests.	2155	EDNS0 in its DNS requests.
1912		2156
1913	=item C<PERL_ANYEVENT_MAX_FORKS>	2157	=item C<PERL_ANYEVENT_MAX_FORKS>
…		…
1921	resolver - this is the maximum number of parallel DNS requests that are	2165	resolver - this is the maximum number of parallel DNS requests that are
1922	sent to the DNS server.	2166	sent to the DNS server.
1923		2167
1924	=item C<PERL_ANYEVENT_RESOLV_CONF>	2168	=item C<PERL_ANYEVENT_RESOLV_CONF>
1925		2169
1926	The file to use instead of F</etc/resolv.conf> (or OS-specific	2170	The absolute path to a F<resolv.conf>-style file to use instead of
1927	configuration) in the default resolver. When set to the empty string, no	2171	F</etc/resolv.conf> (or the OS-specific configuration) in the default
1928	default config will be used.	2172	resolver, or the empty string to select the default configuration.
1929		2173
1930	=item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>.	2174	=item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>.
1931		2175
1932	When neither C<ca_file> nor C<ca_path> was specified during	2176	When neither C<ca_file> nor C<ca_path> was specified during
1933	L<AnyEvent::TLS> context creation, and either of these environment	2177	L<AnyEvent::TLS> context creation, and either of these environment
1934	variables exist, they will be used to specify CA certificate locations	2178	variables are nonempty, they will be used to specify CA certificate
1935	instead of a system-dependent default.	2179	locations instead of a system-dependent default.
1936		2180
1937	=item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT>	2181	=item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT>
1938		2182
1939	When these are set to C<1>, then the respective modules are not	2183	When these are set to C<1>, then the respective modules are not
1940	loaded. Mostly good for testing AnyEvent itself.	2184	loaded. Mostly good for testing AnyEvent itself.
…		…
2272	(even when used without AnyEvent), but most event loops have acceptable	2516	(even when used without AnyEvent), but most event loops have acceptable
2273	performance with or without AnyEvent.	2517	performance with or without AnyEvent.
2274		2518
2275	=item * The overhead AnyEvent adds is usually much smaller than the overhead of	2519	=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2276	the actual event loop, only with extremely fast event loops such as EV	2520	the actual event loop, only with extremely fast event loops such as EV
2277	adds AnyEvent significant overhead.	2521	does AnyEvent add significant overhead.
2278		2522
2279	=item * You should avoid POE like the plague if you want performance or	2523	=item * You should avoid POE like the plague if you want performance or
2280	reasonable memory usage.	2524	reasonable memory usage.
2281		2525
2282	=back	2526	=back
…		…
2581		2825
2582	=item L<Time::HiRes>	2826	=item L<Time::HiRes>
2583		2827
2584	This module is part of perl since release 5.008. It will be used when the	2828	This module is part of perl since release 5.008. It will be used when the
2585	chosen event library does not come with a timing source of its own. The	2829	chosen event library does not come with a timing source of its own. The
2586	pure-perl event loop (L<AnyEvent::Impl::Perl>) will additionally use it to	2830	pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to
2587	try to use a monotonic clock for timing stability.	2831	try to use a monotonic clock for timing stability.
2588		2832
2589	=back	2833	=back
2590		2834
2591		2835
…		…
2657		2901
2658	Tutorial/Introduction: L<AnyEvent::Intro>.	2902	Tutorial/Introduction: L<AnyEvent::Intro>.
2659		2903
2660	FAQ: L<AnyEvent::FAQ>.	2904	FAQ: L<AnyEvent::FAQ>.
2661		2905
2662	Utility functions: L<AnyEvent::Util>.	2906	Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
		2907	(simply logging).
2663		2908
2664	Event modules: L<EV>, L<EV::Glib>, L<Glib::EV>, L<Event>, L<Glib::Event>,	2909	Development/Debugging: L<AnyEvent::Strict> (stricter checking),
2665	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2910	L<AnyEvent::Debug> (interactive shell, watcher tracing).
		2911
		2912	Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
		2913	L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
		2914	L<Qt>, L<POE>, L<FLTK>.
2666		2915
2667	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2916	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2668	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2917	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2669	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2918	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2670	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>.	2919	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
		2920	L<AnyEvent::Impl::FLTK>.
2671		2921
2672	Non-blocking file handles, sockets, TCP clients and	2922	Non-blocking handles, pipes, stream sockets, TCP clients and
2673	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.	2923	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2674		2924
2675	Asynchronous DNS: L<AnyEvent::DNS>.	2925	Asynchronous DNS: L<AnyEvent::DNS>.
2676		2926
2677	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.	2927	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.

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Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.351 by root, Tue Aug 2 22:07:16 2011 UTC vs. Revision 1.373 by root, Thu Aug 25 03:08:48 2011 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.351 by root, Tue Aug 2 22:07:16 2011 UTC vs.
Revision 1.373 by root, Thu Aug 25 03:08:48 2011 UTC