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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.340 by root, Fri Dec 3 18:39:06 2010 UTC vs.
Revision 1.365 by root, Tue Aug 16 14:47:26 2011 UTC

…		…
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
1015	=back	1061	=back
1016		1062
1017	=head1 WHAT TO DO IN A MODULE	1063	=head1 WHAT TO DO IN A MODULE
1018		1064
1019	As a module author, you should C<use AnyEvent> and call AnyEvent methods	1065	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	1098	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	1099	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.	1100	might choose the wrong one unless you load the correct one yourself.
1055		1101
1056	You can chose to use a pure-perl implementation by loading the	1102	You can chose to use a pure-perl implementation by loading the
1057	C<AnyEvent::Impl::Perl> module, which gives you similar behaviour	1103	C<AnyEvent::Loop> module, which gives you similar behaviour
1058	everywhere, but letting AnyEvent chose the model is generally better.	1104	everywhere, but letting AnyEvent chose the model is generally better.
1059		1105
1060	=head2 MAINLOOP EMULATION	1106	=head2 MAINLOOP EMULATION
1061		1107
1062	Sometimes (often for short test scripts, or even standalone programs who	1108	Sometimes (often for short test scripts, or even standalone programs who
…		…
1157		1203
1158	package AnyEvent;	1204	package AnyEvent;
1159		1205
1160	# basically a tuned-down version of common::sense	1206	# basically a tuned-down version of common::sense
1161	sub common_sense {	1207	sub common_sense {
1162	# from common:.sense 3.3	1208	# from common:.sense 3.4
1163	${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf3\x0f\xc0\xf0\xfc\x33\x00";	1209	${^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)	1210	# use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl)
1165	$^H \|= 0x00000600;	1211	$^H \|= 0x00000600;
1166	}	1212	}
1167		1213
1168	BEGIN { AnyEvent::common_sense }	1214	BEGIN { AnyEvent::common_sense }
1169		1215
1170	use Carp ();	1216	use Carp ();
1171		1217
1172	our $VERSION = '5.29';	1218	our $VERSION = '6.01';
1173	our $MODEL;	1219	our $MODEL;
1174		1220
1175	our $AUTOLOAD;
1176	our @ISA;	1221	our @ISA;
1177		1222
1178	our @REGISTRY;	1223	our @REGISTRY;
1179		1224
1180	our $VERBOSE;	1225	our $VERBOSE;
…		…
1186		1231
1187	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}	1232	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1188	if ${^TAINT};	1233	if ${^TAINT};
1189		1234
1190	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;	1235	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
1191
1192	}	1236	}
1193		1237
1194	our $MAX_SIGNAL_LATENCY = 10;	1238	our $MAX_SIGNAL_LATENCY = 10;
1195		1239
1196	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred	1240	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred
…		…
1200	$PROTOCOL{$_} = ++$idx	1244	$PROTOCOL{$_} = ++$idx
1201	for reverse split /\s,\s/,	1245	for reverse split /\s,\s/,
1202	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1246	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1203	}	1247	}
1204		1248
		1249	our @post_detect;
		1250
		1251	sub post_detect(&) {
		1252	my ($cb) = @_;
		1253
		1254	push @post_detect, $cb;
		1255
		1256	defined wantarray
		1257	? bless \$cb, "AnyEvent::Util::postdetect"
		1258	: ()
		1259	}
		1260
		1261	sub AnyEvent::Util::postdetect::DESTROY {
		1262	@post_detect = grep $_ != ${$_[0]}, @post_detect;
		1263	}
		1264
		1265	our $POSTPONE_W;
		1266	our @POSTPONE;
		1267
		1268	sub _postpone_exec {
		1269	undef $POSTPONE_W;
		1270
		1271	&{ shift @POSTPONE }
		1272	while @POSTPONE;
		1273	}
		1274
		1275	sub postpone(&) {
		1276	push @POSTPONE, shift;
		1277
		1278	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
		1279
		1280	()
		1281	}
		1282
		1283	sub log($$;@) {
		1284	require AnyEvent::Log;
		1285	# AnyEvent::Log overwrites this function
		1286	goto &log;
		1287	}
		1288
1205	my @models = (	1289	our @models = (
1206	[EV:: => AnyEvent::Impl::EV:: , 1],	1290	[EV:: => AnyEvent::Impl::EV:: , 1],
1207	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],	1291	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1208	# everything below here will not (normally) be autoprobed	1292	# everything below here will not (normally) be autoprobed
1209	# as the pureperl backend should work everywhere	1293	# as the pure perl backend should work everywhere
1210	# and is usually faster	1294	# and is usually faster
1211	[Event:: => AnyEvent::Impl::Event::, 1],	1295	[Event:: => AnyEvent::Impl::Event::, 1],
1212	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers	1296	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers
1213	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1297	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
1214	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package	1298	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1215	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1299	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1216	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1300	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1217	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1301	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1218	[Wx:: => AnyEvent::Impl::POE::],	1302	[Wx:: => AnyEvent::Impl::POE::],
1219	[Prima:: => AnyEvent::Impl::POE::],	1303	[Prima:: => AnyEvent::Impl::POE::],
1220	# IO::Async is just too broken - we would need workarounds for its	1304	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1221	# byzantine signal and broken child handling, among others.	1305	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1222	# IO::Async is rather hard to detect, as it doesn't have any	1306	[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	);	1307	);
1229		1308
1230	our %method = map +($_ => 1),	1309	our @isa_hook;
		1310
		1311	sub _isa_set {
		1312	my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
		1313
		1314	@{"$pkg[$_-1]::ISA"} = $pkg[$_]
		1315	for 1 .. $#pkg;
		1316
		1317	grep $_ && $_->[1], @isa_hook
		1318	and AE::_reset ();
		1319	}
		1320
		1321	# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
		1322	sub _isa_hook($$;$) {
		1323	my ($i, $pkg, $reset_ae) = @_;
		1324
		1325	$isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
		1326
		1327	_isa_set;
		1328	}
		1329
		1330	# all autoloaded methods reserve the complete glob, not just the method slot.
		1331	# due to bugs in perls method cache implementation.
1231	qw(io timer time now now_update signal child idle condvar one_event DESTROY);	1332	our @methods = qw(io timer time now now_update signal child idle condvar);
1232
1233	our @post_detect;
1234
1235	sub post_detect(&) {
1236	my ($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		1333
1249	sub detect() {	1334	sub detect() {
		1335	return $MODEL if $MODEL; # some programs keep references to detect
		1336
		1337	local $!; # for good measure
		1338	local $SIG{__DIE__}; # we use eval
		1339
1250	# free some memory	1340	# free some memory
1251	*detect = sub () { $MODEL };	1341	*detect = sub () { $MODEL };
		1342	# undef &func doesn't correctly update the method cache. grmbl.
		1343	# so we delete the whole glob. grmbl.
		1344	# otoh, perl doesn't let me undef an active usb, but it lets me free
		1345	# a glob with an active sub. hrm. i hope it works, but perl is
		1346	# usually buggy in this department. sigh.
		1347	delete @{"AnyEvent::"}{@methods};
		1348	undef @methods;
1252		1349
1253	local $!; # for good measure
1254	local $SIG{__DIE__};
1255
1256	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1350	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1257	my $model = "AnyEvent::Impl::$1";	1351	my $model = $1;
		1352	$model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1258	if (eval "require $model") {	1353	if (eval "require $model") {
1259	$MODEL = $model;	1354	$MODEL = $model;
1260	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;	1355	AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."
		1356	if $VERBOSE >= 7;
1261	} else {	1357	} else {
1262	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;	1358	AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1263	}	1359	}
1264	}	1360	}
1265		1361
1266	# check for already loaded models	1362	# check for already loaded models
1267	unless ($MODEL) {	1363	unless ($MODEL) {
1268	for (@REGISTRY, @models) {	1364	for (@REGISTRY, @models) {
1269	my ($package, $model) = @$_;	1365	my ($package, $model) = @$_;
1270	if (${"$package\::VERSION"} > 0) {	1366	if (${"$package\::VERSION"} > 0) {
1271	if (eval "require $model") {	1367	if (eval "require $model") {
1272	$MODEL = $model;	1368	$MODEL = $model;
1273	warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2;	1369	AnyEvent::log 7 => "autodetected model '$model', using it."
		1370	if $VERBOSE >= 7;
1274	last;	1371	last;
1275	}	1372	}
1276	}	1373	}
1277	}	1374	}
1278		1375
…		…
1285	and eval "require $package"	1382	and eval "require $package"
1286	and ${"$package\::VERSION"} > 0	1383	and ${"$package\::VERSION"} > 0
1287	and eval "require $model"	1384	and eval "require $model"
1288	) {	1385	) {
1289	$MODEL = $model;	1386	$MODEL = $model;
1290	warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2;	1387	AnyEvent::log 7 => "autoloaded model '$model', using it."
		1388	if $VERBOSE >= 7;
1291	last;	1389	last;
1292	}	1390	}
1293	}	1391	}
1294		1392
1295	$MODEL	1393	$MODEL
1296	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n";	1394	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1297	}	1395	}
1298	}	1396	}
1299		1397
1300	@models = (); # free probe data	1398	# free memory only needed for probing
		1399	undef @models;
		1400	undef @REGISTRY;
1301		1401
1302	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1402	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1303	unshift @ISA, $MODEL;
1304		1403
1305	# now nuke some methods that are overridden by the backend.	1404	# now nuke some methods that are overridden by the backend.
1306	# SUPER is not allowed.	1405	# SUPER usage is not allowed in these.
1307	for (qw(time signal child idle)) {	1406	for (qw(time signal child idle)) {
1308	undef &{"AnyEvent::Base::$_"}	1407	undef &{"AnyEvent::Base::$_"}
1309	if defined &{"$MODEL\::$_"};	1408	if defined &{"$MODEL\::$_"};
1310	}	1409	}
1311		1410
		1411	_isa_set;
		1412
1312	if ($ENV{PERL_ANYEVENT_STRICT}) {	1413	if ($ENV{PERL_ANYEVENT_STRICT}) {
1313	eval { require AnyEvent::Strict };	1414	require AnyEvent::Strict;
1314	warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1315	if $@ && $VERBOSE;
1316	}	1415	}
1317		1416
		1417	if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
		1418	require AnyEvent::Debug;
		1419	AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
		1420	}
		1421
		1422	if (exists $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
		1423	require AnyEvent::Socket;
		1424	require AnyEvent::Debug;
		1425
		1426	my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
		1427	$shell =~ s/\$\$/$$/g;
		1428
		1429	my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
		1430	$AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
		1431	}
		1432
1318	(shift @post_detect)->() while @post_detect;	1433	(shift @post_detect)->() while @post_detect;
		1434	undef @post_detect;
1319		1435
1320	*post_detect = sub(&) {	1436	*post_detect = sub(&) {
1321	shift->();	1437	shift->();
1322		1438
1323	undef	1439	undef
1324	};	1440	};
1325		1441
1326	$MODEL	1442	$MODEL
1327	}	1443	}
1328		1444
1329	sub AUTOLOAD {	1445	for my $name (@methods) {
1330	(my $func = $AUTOLOAD) =~ s/.*://;	1446	*$name = sub {
1331
1332	$method{$func}
1333	or Carp::croak "$func: not a valid AnyEvent class method";
1334
1335	detect;	1447	detect;
1336		1448	# we use goto because
1337	my $class = shift;	1449	# a) it makes the thunk more transparent
1338	$class->$func (@_);	1450	# b) it allows us to delete the thunk later
		1451	goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
		1452	};
1339	}	1453	}
1340		1454
1341	# utility function to dup a filehandle. this is used by many backends	1455	# utility function to dup a filehandle. this is used by many backends
1342	# to support binding more than one watcher per filehandle (they usually	1456	# to support binding more than one watcher per filehandle (they usually
1343	# allow only one watcher per fd, so we dup it to get a different one).	1457	# allow only one watcher per fd, so we dup it to get a different one).
…		…
1367		1481
1368	package AE;	1482	package AE;
1369		1483
1370	our $VERSION = $AnyEvent::VERSION;	1484	our $VERSION = $AnyEvent::VERSION;
1371		1485
		1486	sub _reset() {
		1487	eval q{
1372	# fall back to the main API by default - backends and AnyEvent::Base	1488	# fall back to the main API by default - backends and AnyEvent::Base
1373	# implementations can overwrite these.	1489	# implementations can overwrite these.
1374		1490
1375	sub io($$$) {	1491	sub io($$$) {
1376	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])	1492	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1377	}	1493	}
1378		1494
1379	sub timer($$$) {	1495	sub timer($$$) {
1380	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])	1496	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1381	}	1497	}
1382		1498
1383	sub signal($$) {	1499	sub signal($$) {
1384	AnyEvent->signal (signal => $_[0], cb => $_[1])	1500	AnyEvent->signal (signal => $_[0], cb => $_[1])
1385	}	1501	}
1386		1502
1387	sub child($$) {	1503	sub child($$) {
1388	AnyEvent->child (pid => $_[0], cb => $_[1])	1504	AnyEvent->child (pid => $_[0], cb => $_[1])
1389	}	1505	}
1390		1506
1391	sub idle($) {	1507	sub idle($) {
1392	AnyEvent->idle (cb => $_[0])	1508	AnyEvent->idle (cb => $_[0]);
1393	}	1509	}
1394		1510
1395	sub cv(;&) {	1511	sub cv(;&) {
1396	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())	1512	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1397	}	1513	}
1398		1514
1399	sub now() {	1515	sub now() {
1400	AnyEvent->now	1516	AnyEvent->now
1401	}	1517	}
1402		1518
1403	sub now_update() {	1519	sub now_update() {
1404	AnyEvent->now_update	1520	AnyEvent->now_update
1405	}	1521	}
1406		1522
1407	sub time() {	1523	sub time() {
1408	AnyEvent->time	1524	AnyEvent->time
		1525	}
		1526
		1527	*postpone = \&AnyEvent::postpone;
		1528	*log = \&AnyEvent::log;
		1529	};
		1530	die if $@;
1409	}	1531	}
		1532
		1533	BEGIN { _reset }
1410		1534
1411	package AnyEvent::Base;	1535	package AnyEvent::Base;
1412		1536
1413	# default implementations for many methods	1537	# default implementations for many methods
1414		1538
1415	sub time {	1539	sub time {
1416	eval q{ # poor man's autoloading {}	1540	eval q{ # poor man's autoloading {}
1417	# probe for availability of Time::HiRes	1541	# probe for availability of Time::HiRes
1418	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1542	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1419	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;	1543	AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."
		1544	if $AnyEvent::VERBOSE >= 8;
		1545	*time = sub { Time::HiRes::time () };
1420	*AE::time = \&Time::HiRes::time;	1546	*AE::time = \& Time::HiRes::time ;
1421	# if (eval "use POSIX (); (POSIX::times())...	1547	# if (eval "use POSIX (); (POSIX::times())...
1422	} else {	1548	} else {
1423	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;	1549	AnyEvent::log critical => "using built-in time(), WARNING, no sub-second resolution!";
		1550	*time = sub { CORE::time };
1424	*AE::time = sub (){ time }; # epic fail	1551	*AE::time = sub (){ CORE::time };
1425	}	1552	}
1426		1553
1427	*time = sub { AE::time }; # different prototypes	1554	*now = \&time;
1428	};	1555	};
1429	die if $@;	1556	die if $@;
1430		1557
1431	&time	1558	&time
1432	}	1559	}
1433		1560
1434	*now = \&time;	1561	*now = \&time;
1435
1436	sub now_update { }	1562	sub now_update { }
1437		1563
		1564	sub _poll {
		1565	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
		1566	}
		1567
1438	# default implementation for ->condvar	1568	# default implementation for ->condvar
		1569	# in fact, the default should not be overwritten
1439		1570
1440	sub condvar {	1571	sub condvar {
1441	eval q{ # poor man's autoloading {}	1572	eval q{ # poor man's autoloading {}
1442	*condvar = sub {	1573	*condvar = sub {
1443	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"	1574	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
…		…
1521		1652
1522	sub signal {	1653	sub signal {
1523	eval q{ # poor man's autoloading {}	1654	eval q{ # poor man's autoloading {}
1524	# probe for availability of Async::Interrupt	1655	# probe for availability of Async::Interrupt
1525	if (_have_async_interrupt) {	1656	if (_have_async_interrupt) {
1526	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;	1657	AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."
		1658	if $AnyEvent::VERBOSE >= 8;
1527		1659
1528	$SIGPIPE_R = new Async::Interrupt::EventPipe;	1660	$SIGPIPE_R = new Async::Interrupt::EventPipe;
1529	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;	1661	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1530		1662
1531	} else {	1663	} else {
1532	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;	1664	AnyEvent::log 8 => "using emulated perl signal handling with latency timer."
		1665	if $AnyEvent::VERBOSE >= 8;
1533		1666
1534	if (AnyEvent::WIN32) {	1667	if (AnyEvent::WIN32) {
1535	require AnyEvent::Util;	1668	require AnyEvent::Util;
1536		1669
1537	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();	1670	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
…		…
1613	: sysread $SIGPIPE_R, (my $dummy), 9;	1746	: sysread $SIGPIPE_R, (my $dummy), 9;
1614		1747
1615	while (%SIG_EV) {	1748	while (%SIG_EV) {
1616	for (keys %SIG_EV) {	1749	for (keys %SIG_EV) {
1617	delete $SIG_EV{$_};	1750	delete $SIG_EV{$_};
1618	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1751	&$_ for values %{ $SIG_CB{$_} \|\| {} };
1619	}	1752	}
1620	}	1753	}
1621	};	1754	};
1622	};	1755	};
1623	die if $@;	1756	die if $@;
…		…
1628	# default implementation for ->child	1761	# default implementation for ->child
1629		1762
1630	our %PID_CB;	1763	our %PID_CB;
1631	our $CHLD_W;	1764	our $CHLD_W;
1632	our $CHLD_DELAY_W;	1765	our $CHLD_DELAY_W;
1633	our $WNOHANG;
1634		1766
1635	# used by many Impl's	1767	# used by many Impl's
1636	sub _emit_childstatus($$) {	1768	sub _emit_childstatus($$) {
1637	my (undef, $rpid, $rstatus) = @_;	1769	my (undef, $rpid, $rstatus) = @_;
1638		1770
…		…
1645	eval q{ # poor man's autoloading {}	1777	eval q{ # poor man's autoloading {}
1646	*_sigchld = sub {	1778	*_sigchld = sub {
1647	my $pid;	1779	my $pid;
1648		1780
1649	AnyEvent->_emit_childstatus ($pid, $?)	1781	AnyEvent->_emit_childstatus ($pid, $?)
1650	while ($pid = waitpid -1, $WNOHANG) > 0;	1782	while ($pid = waitpid -1, WNOHANG) > 0;
1651	};	1783	};
1652		1784
1653	*child = sub {	1785	*child = sub {
1654	my (undef, %arg) = @_;	1786	my (undef, %arg) = @_;
1655		1787
1656	defined (my $pid = $arg{pid} + 0)	1788	my $pid = $arg{pid};
1657	or Carp::croak "required option 'pid' is missing";	1789	my $cb = $arg{cb};
1658		1790
1659	$PID_CB{$pid}{$arg{cb}} = $arg{cb};	1791	$PID_CB{$pid}{$cb+0} = $cb;
1660
1661	# WNOHANG is almost cetrainly 1 everywhere
1662	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/
1663	? 1
1664	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;
1665		1792
1666	unless ($CHLD_W) {	1793	unless ($CHLD_W) {
1667	$CHLD_W = AE::signal CHLD => \&_sigchld;	1794	$CHLD_W = AE::signal CHLD => \&_sigchld;
1668	# child could be a zombie already, so make at least one round	1795	# child could be a zombie already, so make at least one round
1669	&_sigchld;	1796	&_sigchld;
1670	}	1797	}
1671		1798
1672	bless [$pid, $arg{cb}], "AnyEvent::Base::child"	1799	bless [$pid, $cb+0], "AnyEvent::Base::child"
1673	};	1800	};
1674		1801
1675	*AnyEvent::Base::child::DESTROY = sub {	1802	*AnyEvent::Base::child::DESTROY = sub {
1676	my ($pid, $cb) = @{$_[0]};	1803	my ($pid, $icb) = @{$_[0]};
1677		1804
1678	delete $PID_CB{$pid}{$cb};	1805	delete $PID_CB{$pid}{$icb};
1679	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };	1806	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };
1680		1807
1681	undef $CHLD_W unless keys %PID_CB;	1808	undef $CHLD_W unless keys %PID_CB;
1682	};	1809	};
1683	};	1810	};
…		…
1696		1823
1697	my ($cb, $w, $rcb) = $arg{cb};	1824	my ($cb, $w, $rcb) = $arg{cb};
1698		1825
1699	$rcb = sub {	1826	$rcb = sub {
1700	if ($cb) {	1827	if ($cb) {
1701	$w = _time;	1828	$w = AE::time;
1702	&$cb;	1829	&$cb;
1703	$w = _time - $w;	1830	$w = AE::time - $w;
1704		1831
1705	# never use more then 50% of the time for the idle watcher,	1832	# never use more then 50% of the time for the idle watcher,
1706	# within some limits	1833	# within some limits
1707	$w = 0.0001 if $w < 0.0001;	1834	$w = 0.0001 if $w < 0.0001;
1708	$w = 5 if $w > 5;	1835	$w = 5 if $w > 5;
…		…
1755		1882
1756	sub _send {	1883	sub _send {
1757	# nop	1884	# nop
1758	}	1885	}
1759		1886
		1887	sub _wait {
		1888	AnyEvent->_poll until $_[0]{_ae_sent};
		1889	}
		1890
1760	sub send {	1891	sub send {
1761	my $cv = shift;	1892	my $cv = shift;
1762	$cv->{_ae_sent} = [@_];	1893	$cv->{_ae_sent} = [@_];
1763	(delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb};	1894	(delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb};
1764	$cv->_send;	1895	$cv->_send;
…		…
1771		1902
1772	sub ready {	1903	sub ready {
1773	$_[0]{_ae_sent}	1904	$_[0]{_ae_sent}
1774	}	1905	}
1775		1906
1776	sub _wait {
1777	$WAITING
1778	and !$_[0]{_ae_sent}
1779	and Carp::croak "AnyEvent::CondVar: recursive blocking wait detected";
1780
1781	local $WAITING = 1;
1782	AnyEvent->one_event while !$_[0]{_ae_sent};
1783	}
1784
1785	sub recv {	1907	sub recv {
		1908	unless ($_[0]{_ae_sent}) {
		1909	$WAITING
		1910	and Carp::croak "AnyEvent::CondVar: recursive blocking wait attempted";
		1911
		1912	local $WAITING = 1;
1786	$_[0]->_wait;	1913	$_[0]->_wait;
		1914	}
1787		1915
1788	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};	1916	$_[0]{_ae_croak}
1789	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]	1917	and Carp::croak $_[0]{_ae_croak};
		1918
		1919	wantarray
		1920	? @{ $_[0]{_ae_sent} }
		1921	: $_[0]{_ae_sent}[0]
1790	}	1922	}
1791		1923
1792	sub cb {	1924	sub cb {
1793	my $cv = shift;	1925	my $cv = shift;
1794		1926
…		…
1810	&{ $_[0]{_ae_end_cb} \|\| sub { $_[0]->send } };	1942	&{ $_[0]{_ae_end_cb} \|\| sub { $_[0]->send } };
1811	}	1943	}
1812		1944
1813	# undocumented/compatibility with pre-3.4	1945	# undocumented/compatibility with pre-3.4
1814	*broadcast = \&send;	1946	*broadcast = \&send;
1815	*wait = \&_wait;	1947	*wait = \&recv;
1816		1948
1817	=head1 ERROR AND EXCEPTION HANDLING	1949	=head1 ERROR AND EXCEPTION HANDLING
1818		1950
1819	In general, AnyEvent does not do any error handling - it relies on the	1951	In general, AnyEvent does not do any error handling - it relies on the
1820	caller to do that if required. The L<AnyEvent::Strict> module (see also	1952	caller to do that if required. The L<AnyEvent::Strict> module (see also
…		…
1847		1979
1848	By default, AnyEvent will be completely silent except in fatal	1980	By default, AnyEvent will be completely silent except in fatal
1849	conditions. You can set this environment variable to make AnyEvent more	1981	conditions. You can set this environment variable to make AnyEvent more
1850	talkative.	1982	talkative.
1851		1983
1852	When set to C<1> or higher, causes AnyEvent to warn about unexpected	1984	When set to C<5> or higher, causes AnyEvent to warn about unexpected
1853	conditions, such as not being able to load the event model specified by	1985	conditions, such as not being able to load the event model specified by
1854	C<PERL_ANYEVENT_MODEL>.	1986	C<PERL_ANYEVENT_MODEL>.
1855		1987
1856	When set to C<2> or higher, cause AnyEvent to report to STDERR which event	1988	When set to C<7> or higher, cause AnyEvent to report to STDERR which event
1857	model it chooses.	1989	model it chooses.
1858		1990
1859	When set to C<8> or higher, then AnyEvent will report extra information on	1991	When set to C<8> or higher, then AnyEvent will report extra information on
1860	which optional modules it loads and how it implements certain features.	1992	which optional modules it loads and how it implements certain features.
1861		1993
…		…
1872	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>	2004	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1873	>>, it is definitely recommended to keep it off in production. Keeping	2005	>>, it is definitely recommended to keep it off in production. Keeping
1874	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs	2006	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1875	can be very useful, however.	2007	can be very useful, however.
1876		2008
		2009	=item C<PERL_ANYEVENT_DEBUG_SHELL>
		2010
		2011	If this env variable is set, then its contents will be interpreted by
		2012	C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of
		2013	C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on
		2014	that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>.
		2015
		2016	This takes place when the first watcher is created.
		2017
		2018	For example, to bind a debug shell on a unix domain socket in
		2019	F<< /tmp/debug<pid>.sock >>, you could use this:
		2020
		2021	PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
		2022
		2023	Note that creating sockets in F</tmp> is very unsafe on multiuser
		2024	systems.
		2025
		2026	=item C<PERL_ANYEVENT_DEBUG_WRAP>
		2027
		2028	Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
		2029	debugging purposes. See C<AnyEvent::Debug::wrap> for details.
		2030
1877	=item C<PERL_ANYEVENT_MODEL>	2031	=item C<PERL_ANYEVENT_MODEL>
1878		2032
1879	This can be used to specify the event model to be used by AnyEvent, before	2033	This can be used to specify the event model to be used by AnyEvent, before
1880	auto detection and -probing kicks in. It must be a string consisting	2034	auto detection and -probing kicks in.
1881	entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended	2035
		2036	It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
		2037	or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1882	and the resulting module name is loaded and if the load was successful,	2038	resulting module name is loaded and - if the load was successful - used as
1883	used as event model. If it fails to load AnyEvent will proceed with	2039	event model backend. If it fails to load then AnyEvent will proceed with
1884	auto detection and -probing.	2040	auto detection and -probing.
1885		2041
1886	This functionality might change in future versions.	2042	If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
		2043	nothing gets prepended and the module name is used as-is (hint: C<::> at
		2044	the end of a string designates a module name and quotes it appropriately).
1887		2045
1888	For example, to force the pure perl model (L<AnyEvent::Impl::Perl>) you	2046	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1889	could start your program like this:	2047	could start your program like this:
1890		2048
1891	PERL_ANYEVENT_MODEL=Perl perl ...	2049	PERL_ANYEVENT_MODEL=Perl perl ...
1892		2050
1893	=item C<PERL_ANYEVENT_PROTOCOLS>	2051	=item C<PERL_ANYEVENT_PROTOCOLS>
…		…
2283	(even when used without AnyEvent), but most event loops have acceptable	2441	(even when used without AnyEvent), but most event loops have acceptable
2284	performance with or without AnyEvent.	2442	performance with or without AnyEvent.
2285		2443
2286	=item * The overhead AnyEvent adds is usually much smaller than the overhead of	2444	=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2287	the actual event loop, only with extremely fast event loops such as EV	2445	the actual event loop, only with extremely fast event loops such as EV
2288	adds AnyEvent significant overhead.	2446	does AnyEvent add significant overhead.
2289		2447
2290	=item * You should avoid POE like the plague if you want performance or	2448	=item * You should avoid POE like the plague if you want performance or
2291	reasonable memory usage.	2449	reasonable memory usage.
2292		2450
2293	=back	2451	=back
…		…
2592		2750
2593	=item L<Time::HiRes>	2751	=item L<Time::HiRes>
2594		2752
2595	This module is part of perl since release 5.008. It will be used when the	2753	This module is part of perl since release 5.008. It will be used when the
2596	chosen event library does not come with a timing source of its own. The	2754	chosen event library does not come with a timing source of its own. The
2597	pure-perl event loop (L<AnyEvent::Impl::Perl>) will additionally use it to	2755	pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to
2598	try to use a monotonic clock for timing stability.	2756	try to use a monotonic clock for timing stability.
2599		2757
2600	=back	2758	=back
2601		2759
2602		2760
…		…
2668		2826
2669	Tutorial/Introduction: L<AnyEvent::Intro>.	2827	Tutorial/Introduction: L<AnyEvent::Intro>.
2670		2828
2671	FAQ: L<AnyEvent::FAQ>.	2829	FAQ: L<AnyEvent::FAQ>.
2672		2830
2673	Utility functions: L<AnyEvent::Util>.	2831	Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
		2832	(simply logging).
2674		2833
2675	Event modules: L<EV>, L<EV::Glib>, L<Glib::EV>, L<Event>, L<Glib::Event>,	2834	Development/Debugging: L<AnyEvent::Strict> (stricter checking),
2676	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2835	L<AnyEvent::Debug> (interactive shell, watcher tracing).
		2836
		2837	Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
		2838	L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
		2839	L<Qt>, L<POE>, L<FLTK>.
2677		2840
2678	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2841	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2679	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2842	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2680	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2843	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2681	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>.	2844	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
		2845	L<AnyEvent::Impl::FLTK>.
2682		2846
2683	Non-blocking file handles, sockets, TCP clients and	2847	Non-blocking handles, pipes, stream sockets, TCP clients and
2684	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.	2848	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2685		2849
2686	Asynchronous DNS: L<AnyEvent::DNS>.	2850	Asynchronous DNS: L<AnyEvent::DNS>.
2687		2851
2688	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.	2852	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 1.340 by root, Fri Dec 3 18:39:06 2010 UTC vs. Revision 1.365 by root, Tue Aug 16 14:47:26 2011 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.340 by root, Fri Dec 3 18:39:06 2010 UTC vs.
Revision 1.365 by root, Tue Aug 16 14:47:26 2011 UTC