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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.249 by root, Mon Jul 20 06:00:42 2009 UTC vs.
Revision 1.279 by root, Sun Aug 9 16:05:11 2009 UTC

…		…
1	=head1 NAME	1	=head1 NAME
2		2
3	AnyEvent - events independent of event loop implementation	3	AnyEvent - the DBI of event loop programming
4		4
5	EV, Event, Glib, Tk, Perl, Event::Lib, Qt and POE are various supported	5	EV, Event, Glib, Tk, Perl, Event::Lib, Irssi, rxvt-unicode, IO::Async, Qt
6	event loops.	6	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
47		47
48	There is a mailinglist for discussing all things AnyEvent, and an IRC	48	There is a mailinglist for discussing all things AnyEvent, and an IRC
49	channel, too.	49	channel, too.
50		50
51	See the AnyEvent project page at the B<Schmorpforge Ta-Sa Software	51	See the AnyEvent project page at the B<Schmorpforge Ta-Sa Software
52	Respository>, at L<http://anyevent.schmorp.de>, for more info.	52	Repository>, at L<http://anyevent.schmorp.de>, for more info.
53		53
54	=head1 WHY YOU SHOULD USE THIS MODULE (OR NOT)	54	=head1 WHY YOU SHOULD USE THIS MODULE (OR NOT)
55		55
56	Glib, POE, IO::Async, Event... CPAN offers event models by the dozen	56	Glib, POE, IO::Async, Event... CPAN offers event models by the dozen
57	nowadays. So what is different about AnyEvent?	57	nowadays. So what is different about AnyEvent?
…		…
181	my variables are only visible after the statement in which they are	181	my variables are only visible after the statement in which they are
182	declared.	182	declared.
183		183
184	=head2 I/O WATCHERS	184	=head2 I/O WATCHERS
185		185
		186	$w = AnyEvent->io (
		187	fh => <filehandle_or_fileno>,
		188	poll => <"r" or "w">,
		189	cb => <callback>,
		190	);
		191
186	You can create an I/O watcher by calling the C<< AnyEvent->io >> method	192	You can create an I/O watcher by calling the C<< AnyEvent->io >> method
187	with the following mandatory key-value pairs as arguments:	193	with the following mandatory key-value pairs as arguments:
188		194
189	C<fh> is the Perl I<file handle> (or a naked file descriptor) to watch	195	C<fh> is the Perl I<file handle> (or a naked file descriptor) to watch
190	for events (AnyEvent might or might not keep a reference to this file	196	for events (AnyEvent might or might not keep a reference to this file
…		…
219	undef $w;	225	undef $w;
220	});	226	});
221		227
222	=head2 TIME WATCHERS	228	=head2 TIME WATCHERS
223		229
		230	$w = AnyEvent->timer (after => <seconds>, cb => <callback>);
		231
		232	$w = AnyEvent->timer (
		233	after => <fractional_seconds>,
		234	interval => <fractional_seconds>,
		235	cb => <callback>,
		236	);
		237
224	You can create a time watcher by calling the C<< AnyEvent->timer >>	238	You can create a time watcher by calling the C<< AnyEvent->timer >>
225	method with the following mandatory arguments:	239	method with the following mandatory arguments:
226		240
227	C<after> specifies after how many seconds (fractional values are	241	C<after> specifies after how many seconds (fractional values are
228	supported) the callback should be invoked. C<cb> is the callback to invoke	242	supported) the callback should be invoked. C<cb> is the callback to invoke
…		…
355		369
356	=back	370	=back
357		371
358	=head2 SIGNAL WATCHERS	372	=head2 SIGNAL WATCHERS
359		373
		374	$w = AnyEvent->signal (signal => <uppercase_signal_name>, cb => <callback>);
		375
360	You can watch for signals using a signal watcher, C<signal> is the signal	376	You can watch for signals using a signal watcher, C<signal> is the signal
361	I<name> in uppercase and without any C<SIG> prefix, C<cb> is the Perl	377	I<name> in uppercase and without any C<SIG> prefix, C<cb> is the Perl
362	callback to be invoked whenever a signal occurs.	378	callback to be invoked whenever a signal occurs.
363		379
364	Although the callback might get passed parameters, their value and	380	Although the callback might get passed parameters, their value and
…		…
383	my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 });	399	my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 });
384		400
385	=head3 Signal Races, Delays and Workarounds	401	=head3 Signal Races, Delays and Workarounds
386		402
387	Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching	403	Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching
388	callbacks to signals in a generic way, which is a pity, as you cannot do	404	callbacks to signals in a generic way, which is a pity, as you cannot
389	race-free signal handling in perl. AnyEvent will try to do it's best, but	405	do race-free signal handling in perl, requiring C libraries for
		406	this. AnyEvent will try to do it's best, which means in some cases,
390	in some cases, signals will be delayed. The maximum time a signal might	407	signals will be delayed. The maximum time a signal might be delayed is
391	be delayed is specified in C<$AnyEvent::MAX_SIGNAL_LATENCY> (default: 10	408	specified in C<$AnyEvent::MAX_SIGNAL_LATENCY> (default: 10 seconds). This
392	seconds). This variable can be changed only before the first signal	409	variable can be changed only before the first signal watcher is created,
393	watcher is created, and should be left alone otherwise. Higher values	410	and should be left alone otherwise. This variable determines how often
		411	AnyEvent polls for signals (in case a wake-up was missed). Higher values
394	will cause fewer spurious wake-ups, which is better for power and CPU	412	will cause fewer spurious wake-ups, which is better for power and CPU
		413	saving.
		414
395	saving. All these problems can be avoided by installing the optional	415	All these problems can be avoided by installing the optional
396	L<Async::Interrupt> module. This will not work with inherently broken	416	L<Async::Interrupt> module, which works with most event loops. It will not
397	event loops such as L<Event> or L<Event::Lib> (and not with L<POE>	417	work with inherently broken event loops such as L<Event> or L<Event::Lib>
398	currently, as POE does it's own workaround with one-second latency). With	418	(and not with L<POE> currently, as POE does it's own workaround with
399	those, you just have to suffer the delays.	419	one-second latency). For those, you just have to suffer the delays.
400		420
401	=head2 CHILD PROCESS WATCHERS	421	=head2 CHILD PROCESS WATCHERS
402		422
		423	$w = AnyEvent->child (pid => <process id>, cb => <callback>);
		424
403	You can also watch on a child process exit and catch its exit status.	425	You can also watch on a child process exit and catch its exit status.
404		426
405	The child process is specified by the C<pid> argument (if set to C<0>, it	427	The child process is specified by the C<pid> argument (one some backends,
406	watches for any child process exit). The watcher will triggered only when	428	using C<0> watches for any child process exit, on others this will
407	the child process has finished and an exit status is available, not on	429	croak). The watcher will be triggered only when the child process has
408	any trace events (stopped/continued).	430	finished and an exit status is available, not on any trace events
		431	(stopped/continued).
409		432
410	The callback will be called with the pid and exit status (as returned by	433	The callback will be called with the pid and exit status (as returned by
411	waitpid), so unlike other watcher types, you I<can> rely on child watcher	434	waitpid), so unlike other watcher types, you I<can> rely on child watcher
412	callback arguments.	435	callback arguments.
413		436
…		…
454	# do something else, then wait for process exit	477	# do something else, then wait for process exit
455	$done->recv;	478	$done->recv;
456		479
457	=head2 IDLE WATCHERS	480	=head2 IDLE WATCHERS
458		481
		482	$w = AnyEvent->idle (cb => <callback>);
		483
459	Sometimes there is a need to do something, but it is not so important	484	Sometimes there is a need to do something, but it is not so important
460	to do it instantly, but only when there is nothing better to do. This	485	to do it instantly, but only when there is nothing better to do. This
461	"nothing better to do" is usually defined to be "no other events need	486	"nothing better to do" is usually defined to be "no other events need
462	attention by the event loop".	487	attention by the event loop".
463		488
…		…
489	});	514	});
490	});	515	});
491		516
492	=head2 CONDITION VARIABLES	517	=head2 CONDITION VARIABLES
493		518
		519	$cv = AnyEvent->condvar;
		520
		521	$cv->send (<list>);
		522	my @res = $cv->recv;
		523
494	If you are familiar with some event loops you will know that all of them	524	If you are familiar with some event loops you will know that all of them
495	require you to run some blocking "loop", "run" or similar function that	525	require you to run some blocking "loop", "run" or similar function that
496	will actively watch for new events and call your callbacks.	526	will actively watch for new events and call your callbacks.
497		527
498	AnyEvent is slightly different: it expects somebody else to run the event	528	AnyEvent is slightly different: it expects somebody else to run the event
…		…
517	Condition variables are similar to callbacks, except that you can	547	Condition variables are similar to callbacks, except that you can
518	optionally wait for them. They can also be called merge points - points	548	optionally wait for them. They can also be called merge points - points
519	in time where multiple outstanding events have been processed. And yet	549	in time where multiple outstanding events have been processed. And yet
520	another way to call them is transactions - each condition variable can be	550	another way to call them is transactions - each condition variable can be
521	used to represent a transaction, which finishes at some point and delivers	551	used to represent a transaction, which finishes at some point and delivers
522	a result.	552	a result. And yet some people know them as "futures" - a promise to
		553	compute/deliver something that you can wait for.
523		554
524	Condition variables are very useful to signal that something has finished,	555	Condition variables are very useful to signal that something has finished,
525	for example, if you write a module that does asynchronous http requests,	556	for example, if you write a module that does asynchronous http requests,
526	then a condition variable would be the ideal candidate to signal the	557	then a condition variable would be the ideal candidate to signal the
527	availability of results. The user can either act when the callback is	558	availability of results. The user can either act when the callback is
…		…
759	=item $cb = $cv->cb ($cb->($cv))	790	=item $cb = $cv->cb ($cb->($cv))
760		791
761	This is a mutator function that returns the callback set and optionally	792	This is a mutator function that returns the callback set and optionally
762	replaces it before doing so.	793	replaces it before doing so.
763		794
764	The callback will be called when the condition becomes "true", i.e. when	795	The callback will be called when the condition becomes (or already was)
765	C<send> or C<croak> are called, with the only argument being the condition	796	"true", i.e. when C<send> or C<croak> are called (or were called), with
766	variable itself. Calling C<recv> inside the callback or at any later time	797	the only argument being the condition variable itself. Calling C<recv>
767	is guaranteed not to block.	798	inside the callback or at any later time is guaranteed not to block.
768		799
769	=back	800	=back
770		801
771	=head1 SUPPORTED EVENT LOOPS/BACKENDS	802	=head1 SUPPORTED EVENT LOOPS/BACKENDS
772		803
…		…
775	=over 4	806	=over 4
776		807
777	=item Backends that are autoprobed when no other event loop can be found.	808	=item Backends that are autoprobed when no other event loop can be found.
778		809
779	EV is the preferred backend when no other event loop seems to be in	810	EV is the preferred backend when no other event loop seems to be in
780	use. If EV is not installed, then AnyEvent will try Event, and, failing	811	use. If EV is not installed, then AnyEvent will fall back to its own
781	that, will fall back to its own pure-perl implementation, which is	812	pure-perl implementation, which is available everywhere as it comes with
782	available everywhere as it comes with AnyEvent itself.	813	AnyEvent itself.
783		814
784	AnyEvent::Impl::EV based on EV (interface to libev, best choice).	815	AnyEvent::Impl::EV based on EV (interface to libev, best choice).
785	AnyEvent::Impl::Event based on Event, very stable, few glitches.
786	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.	816	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.
787		817
788	=item Backends that are transparently being picked up when they are used.	818	=item Backends that are transparently being picked up when they are used.
789		819
790	These will be used when they are currently loaded when the first watcher	820	These will be used when they are currently loaded when the first watcher
791	is created, in which case it is assumed that the application is using	821	is created, in which case it is assumed that the application is using
792	them. This means that AnyEvent will automatically pick the right backend	822	them. This means that AnyEvent will automatically pick the right backend
793	when the main program loads an event module before anything starts to	823	when the main program loads an event module before anything starts to
794	create watchers. Nothing special needs to be done by the main program.	824	create watchers. Nothing special needs to be done by the main program.
795		825
		826	AnyEvent::Impl::Event based on Event, very stable, few glitches.
796	AnyEvent::Impl::Glib based on Glib, slow but very stable.	827	AnyEvent::Impl::Glib based on Glib, slow but very stable.
797	AnyEvent::Impl::Tk based on Tk, very broken.	828	AnyEvent::Impl::Tk based on Tk, very broken.
798	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.	829	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
799	AnyEvent::Impl::POE based on POE, very slow, some limitations.	830	AnyEvent::Impl::POE based on POE, very slow, some limitations.
		831	AnyEvent::Impl::Irssi used when running within irssi.
800		832
801	=item Backends with special needs.	833	=item Backends with special needs.
802		834
803	Qt requires the Qt::Application to be instantiated first, but will	835	Qt requires the Qt::Application to be instantiated first, but will
804	otherwise be picked up automatically. As long as the main program	836	otherwise be picked up automatically. As long as the main program
…		…
878	event module detection too early, for example, L<AnyEvent::AIO> creates	910	event module detection too early, for example, L<AnyEvent::AIO> creates
879	and installs the global L<IO::AIO> watcher in a C<post_detect> block to	911	and installs the global L<IO::AIO> watcher in a C<post_detect> block to
880	avoid autodetecting the event module at load time.	912	avoid autodetecting the event module at load time.
881		913
882	If called in scalar or list context, then it creates and returns an object	914	If called in scalar or list context, then it creates and returns an object
883	that automatically removes the callback again when it is destroyed. See	915	that automatically removes the callback again when it is destroyed (or
		916	C<undef> when the hook was immediately executed). See L<AnyEvent::AIO> for
884	L<Coro::BDB> for a case where this is useful.	917	a case where this is useful.
		918
		919	Example: Create a watcher for the IO::AIO module and store it in
		920	C<$WATCHER>. Only do so after the event loop is initialised, though.
		921
		922	our WATCHER;
		923
		924	my $guard = AnyEvent::post_detect {
		925	$WATCHER = AnyEvent->io (fh => IO::AIO::poll_fileno, poll => 'r', cb => \&IO::AIO::poll_cb);
		926	};
		927
		928	# the \|\|= is important in case post_detect immediately runs the block,
		929	# as to not clobber the newly-created watcher. assigning both watcher and
		930	# post_detect guard to the same variable has the advantage of users being
		931	# able to just C<undef $WATCHER> if the watcher causes them grief.
		932
		933	$WATCHER \|\|= $guard;
885		934
886	=item @AnyEvent::post_detect	935	=item @AnyEvent::post_detect
887		936
888	If there are any code references in this array (you can C<push> to it	937	If there are any code references in this array (you can C<push> to it
889	before or after loading AnyEvent), then they will called directly after	938	before or after loading AnyEvent), then they will called directly after
…		…
1066		1115
1067	BEGIN { AnyEvent::common_sense }	1116	BEGIN { AnyEvent::common_sense }
1068		1117
1069	use Carp ();	1118	use Carp ();
1070		1119
1071	our $VERSION = 4.85;	1120	our $VERSION = '5.0';
1072	our $MODEL;	1121	our $MODEL;
1073		1122
1074	our $AUTOLOAD;	1123	our $AUTOLOAD;
1075	our @ISA;	1124	our @ISA;
1076		1125
…		…
1101	for reverse split /\s,\s/,	1150	for reverse split /\s,\s/,
1102	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1151	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1103	}	1152	}
1104		1153
1105	my @models = (	1154	my @models = (
1106	[EV:: => AnyEvent::Impl::EV::],	1155	[EV:: => AnyEvent::Impl::EV:: , 1],
1107	[Event:: => AnyEvent::Impl::Event::],
1108	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl::],	1156	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],
1109	# everything below here will not be autoprobed	1157	# everything below here will not (normally) be autoprobed
1110	# as the pureperl backend should work everywhere	1158	# as the pureperl backend should work everywhere
1111	# and is usually faster	1159	# and is usually faster
		1160	[Event:: => AnyEvent::Impl::Event::, 1],
1112	[Glib:: => AnyEvent::Impl::Glib::], # becomes extremely slow with many watchers	1161	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers
1113	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1162	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
		1163	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1114	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1164	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1115	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1165	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1116	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1166	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1117	[Wx:: => AnyEvent::Impl::POE::],	1167	[Wx:: => AnyEvent::Impl::POE::],
1118	[Prima:: => AnyEvent::Impl::POE::],	1168	[Prima:: => AnyEvent::Impl::POE::],
1119	# IO::Async is just too broken - we would need workarounds for its	1169	# IO::Async is just too broken - we would need workarounds for its
1120	# byzantine signal and broken child handling, among others.	1170	# byzantine signal and broken child handling, among others.
1121	# IO::Async is rather hard to detect, as it doesn't have any	1171	# IO::Async is rather hard to detect, as it doesn't have any
1122	# obvious default class.	1172	# obvious default class.
1123	# [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program	1173	[IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program
1124	# [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program	1174	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program
1125	# [IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program	1175	[IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program
		1176	[AnyEvent::Impl::IOAsync:: => AnyEvent::Impl::IOAsync::], # requires special main program
1126	);	1177	);
1127		1178
1128	our %method = map +($_ => 1),	1179	our %method = map +($_ => 1),
1129	qw(io timer time now now_update signal child idle condvar one_event DESTROY);	1180	qw(io timer time now now_update signal child idle condvar one_event DESTROY);
1130		1181
…		…
1134	my ($cb) = @_;	1185	my ($cb) = @_;
1135		1186
1136	if ($MODEL) {	1187	if ($MODEL) {
1137	$cb->();	1188	$cb->();
1138		1189
1139	1	1190	undef
1140	} else {	1191	} else {
1141	push @post_detect, $cb;	1192	push @post_detect, $cb;
1142		1193
1143	defined wantarray	1194	defined wantarray
1144	? bless \$cb, "AnyEvent::Util::postdetect"	1195	? bless \$cb, "AnyEvent::Util::postdetect"
…		…
1176	}	1227	}
1177	}	1228	}
1178	}	1229	}
1179		1230
1180	unless ($MODEL) {	1231	unless ($MODEL) {
1181	# try to load a model	1232	# try to autoload a model
1182
1183	for (@REGISTRY, @models) {	1233	for (@REGISTRY, @models) {
1184	my ($package, $model) = @$_;	1234	my ($package, $model, $autoload) = @$_;
		1235	if (
		1236	$autoload
1185	if (eval "require $package"	1237	and eval "require $package"
1186	and ${"$package\::VERSION"} > 0	1238	and ${"$package\::VERSION"} > 0
1187	and eval "require $model") {	1239	and eval "require $model"
		1240	) {
1188	$MODEL = $model;	1241	$MODEL = $model;
1189	warn "AnyEvent: autoprobed model '$model', using it.\n" if $VERBOSE >= 2;	1242	warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2;
1190	last;	1243	last;
1191	}	1244	}
1192	}	1245	}
1193		1246
1194	$MODEL	1247	$MODEL
…		…
1233	or die "AnyEvent->io: cannot dup() filehandle in mode '$poll': $!,";	1286	or die "AnyEvent->io: cannot dup() filehandle in mode '$poll': $!,";
1234		1287
1235	# we assume CLOEXEC is already set by perl in all important cases	1288	# we assume CLOEXEC is already set by perl in all important cases
1236		1289
1237	($fh2, $rw)	1290	($fh2, $rw)
		1291	}
		1292
		1293	=head1 SIMPLIFIED AE API
		1294
		1295	Starting with version 5.0, AnyEvent officially supports a second, much
		1296	simpler, API that is designed to reduce the calling, typing and memory
		1297	overhead.
		1298
		1299	See the L<AE> manpage for details.
		1300
		1301	=cut
		1302
		1303	package AE;
		1304
		1305	our $VERSION = $AnyEvent::VERSION;
		1306
		1307	sub io($$$) {
		1308	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
		1309	}
		1310
		1311	sub timer($$$) {
		1312	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
		1313	}
		1314
		1315	sub signal($$) {
		1316	AnyEvent->signal (signal => $_[0], cb => $_[1])
		1317	}
		1318
		1319	sub child($$) {
		1320	AnyEvent->child (pid => $_[0], cb => $_[1])
		1321	}
		1322
		1323	sub idle($) {
		1324	AnyEvent->idle (cb => $_[0])
		1325	}
		1326
		1327	sub cv(;&) {
		1328	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
		1329	}
		1330
		1331	sub now() {
		1332	AnyEvent->now
		1333	}
		1334
		1335	sub now_update() {
		1336	AnyEvent->now_update
		1337	}
		1338
		1339	sub time() {
		1340	AnyEvent->time
1238	}	1341	}
1239		1342
1240	package AnyEvent::Base;	1343	package AnyEvent::Base;
1241		1344
1242	# default implementations for many methods	1345	# default implementations for many methods
…		…
1266	}	1369	}
1267		1370
1268	# default implementation for ->signal	1371	# default implementation for ->signal
1269		1372
1270	our $HAVE_ASYNC_INTERRUPT;	1373	our $HAVE_ASYNC_INTERRUPT;
		1374
		1375	sub _have_async_interrupt() {
		1376	$HAVE_ASYNC_INTERRUPT = 1*(!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT}
		1377	&& eval "use Async::Interrupt 1.0 (); 1")
		1378	unless defined $HAVE_ASYNC_INTERRUPT;
		1379
		1380	$HAVE_ASYNC_INTERRUPT
		1381	}
		1382
1271	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);	1383	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);
1272	our (%SIG_ASY, %SIG_ASY_W);	1384	our (%SIG_ASY, %SIG_ASY_W);
1273	our ($SIG_COUNT, $SIG_TW);	1385	our ($SIG_COUNT, $SIG_TW);
1274		1386
1275	sub _signal_exec {	1387	sub _signal_exec {
…		…
1283	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1395	$_->() for values %{ $SIG_CB{$_} \|\| {} };
1284	}	1396	}
1285	}	1397	}
1286	}	1398	}
1287		1399
1288	# install a dumym wakeupw atcher to reduce signal catching latency	1400	# install a dummy wakeup watcher to reduce signal catching latency
1289	sub _sig_add() {	1401	sub _sig_add() {
1290	unless ($SIG_COUNT++) {	1402	unless ($SIG_COUNT++) {
1291	# try to align timer on a full-second boundary, if possible	1403	# try to align timer on a full-second boundary, if possible
1292	my $NOW = AnyEvent->now;	1404	my $NOW = AE::now;
1293		1405
1294	$SIG_TW = AnyEvent->timer (	1406	$SIG_TW = AE::timer
1295	after => $MAX_SIGNAL_LATENCY - ($NOW - int $NOW),	1407	$MAX_SIGNAL_LATENCY - ($NOW - int $NOW),
1296	interval => $MAX_SIGNAL_LATENCY,	1408	$MAX_SIGNAL_LATENCY,
1297	cb => sub { }, # just for the PERL_ASYNC_CHECK	1409	sub { } # just for the PERL_ASYNC_CHECK
1298	);	1410	;
1299	}	1411	}
1300	}	1412	}
1301		1413
1302	sub _sig_del {	1414	sub _sig_del {
1303	undef $SIG_TW	1415	undef $SIG_TW
1304	unless --$SIG_COUNT;	1416	unless --$SIG_COUNT;
1305	}	1417	}
1306		1418
		1419	our $_sig_name_init; $_sig_name_init = sub {
		1420	eval q{ # poor man's autoloading
		1421	undef $_sig_name_init;
		1422
		1423	if (_have_async_interrupt) {
		1424	*sig2num = \&Async::Interrupt::sig2num;
		1425	*sig2name = \&Async::Interrupt::sig2name;
		1426	} else {
		1427	require Config;
		1428
		1429	my %signame2num;
		1430	@signame2num{ split ' ', $Config::Config{sig_name} }
		1431	= split ' ', $Config::Config{sig_num};
		1432
		1433	my @signum2name;
		1434	@signum2name[values %signame2num] = keys %signame2num;
		1435
		1436	*sig2num = sub($) {
		1437	$_[0] > 0 ? shift : $signame2num{+shift}
		1438	};
		1439	*sig2name = sub ($) {
		1440	$_[0] > 0 ? $signum2name[+shift] : shift
		1441	};
		1442	}
		1443	};
		1444	die if $@;
		1445	};
		1446
		1447	sub sig2num ($) { &$_sig_name_init; &sig2num }
		1448	sub sig2name($) { &$_sig_name_init; &sig2name }
		1449
1307	sub _signal {	1450	sub signal {
		1451	eval q{ # poor man's autoloading {}
		1452	# probe for availability of Async::Interrupt
		1453	if (_have_async_interrupt) {
		1454	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;
		1455
		1456	$SIGPIPE_R = new Async::Interrupt::EventPipe;
		1457	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
		1458
		1459	} else {
		1460	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;
		1461
		1462	require Fcntl;
		1463
		1464	if (AnyEvent::WIN32) {
		1465	require AnyEvent::Util;
		1466
		1467	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
		1468	AnyEvent::Util::fh_nonblocking ($SIGPIPE_R, 1) if $SIGPIPE_R;
		1469	AnyEvent::Util::fh_nonblocking ($SIGPIPE_W, 1) if $SIGPIPE_W; # just in case
		1470	} else {
		1471	pipe $SIGPIPE_R, $SIGPIPE_W;
		1472	fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R;
		1473	fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case
		1474
		1475	# not strictly required, as $^F is normally 2, but let's make sure...
		1476	fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
		1477	fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
		1478	}
		1479
		1480	$SIGPIPE_R
		1481	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
		1482
		1483	$SIG_IO = AE::io $SIGPIPE_R, 0, \&_signal_exec;
		1484	}
		1485
		1486	*signal = sub {
1308	my (undef, %arg) = @_;	1487	my (undef, %arg) = @_;
1309		1488
1310	my $signal = uc $arg{signal}	1489	my $signal = uc $arg{signal}
1311	or Carp::croak "required option 'signal' is missing";	1490	or Carp::croak "required option 'signal' is missing";
1312		1491
1313	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
1314
1315	if ($HAVE_ASYNC_INTERRUPT) {	1492	if ($HAVE_ASYNC_INTERRUPT) {
1316	# async::interrupt	1493	# async::interrupt
1317		1494
1318	$SIG_ASY{$signal} \|\|= do {	1495	$signal = sig2num $signal;
1319	my $asy = new Async::Interrupt	1496	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
		1497
		1498	$SIG_ASY{$signal} \|\|= new Async::Interrupt
1320	cb => sub { undef $SIG_EV{$signal} },	1499	cb => sub { undef $SIG_EV{$signal} },
1321	signal => $signal,	1500	signal => $signal,
1322	pipe => [$SIGPIPE_R->filenos],	1501	pipe => [$SIGPIPE_R->filenos],
		1502	pipe_autodrain => 0,
		1503	;
		1504
		1505	} else {
		1506	# pure perl
		1507
		1508	# AE::Util has been loaded in signal
		1509	$signal = sig2name $signal;
		1510	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
		1511
		1512	$SIG{$signal} \|\|= sub {
		1513	local $!;
		1514	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;
		1515	undef $SIG_EV{$signal};
		1516	};
		1517
		1518	# can't do signal processing without introducing races in pure perl,
		1519	# so limit the signal latency.
		1520	_sig_add;
1323	;	1521	}
1324	$asy->pipe_autodrain (0);
1325		1522
1326	$asy	1523	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"
1327	};	1524	};
1328		1525
1329	} else {	1526	*AnyEvent::Base::signal::DESTROY = sub {
1330	# pure perl	1527	my ($signal, $cb) = @{$_[0]};
1331		1528
1332	$SIG{$signal} \|\|= sub {	1529	_sig_del;
1333	local $!;	1530
1334	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;	1531	delete $SIG_CB{$signal}{$cb};
		1532
		1533	$HAVE_ASYNC_INTERRUPT
		1534	? delete $SIG_ASY{$signal}
		1535	: # delete doesn't work with older perls - they then
		1536	# print weird messages, or just unconditionally exit
		1537	# instead of getting the default action.
1335	undef $SIG_EV{$signal};	1538	undef $SIG{$signal}
		1539	unless keys %{ $SIG_CB{$signal} };
1336	};	1540	};
1337
1338	# can't do signal processing without introducing races in pure perl,
1339	# so limit the signal latency.
1340	_sig_add;
1341	}	1541	};
1342		1542	die if $@;
1343	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"
1344	}
1345
1346	sub signal {
1347	# probe for availability of Async::Interrupt
1348	if (!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} && eval "use Async::Interrupt 0.6 (); 1") {
1349	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;
1350
1351	$HAVE_ASYNC_INTERRUPT = 1;
1352	$SIGPIPE_R = new Async::Interrupt::EventPipe;
1353	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec);
1354
1355	} else {
1356	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;
1357
1358	require Fcntl;
1359
1360	if (AnyEvent::WIN32) {
1361	require AnyEvent::Util;
1362
1363	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
1364	AnyEvent::Util::fh_nonblocking ($SIGPIPE_R) if $SIGPIPE_R;
1365	AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) if $SIGPIPE_W; # just in case
1366	} else {
1367	pipe $SIGPIPE_R, $SIGPIPE_W;
1368	fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R;
1369	fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case
1370
1371	# not strictly required, as $^F is normally 2, but let's make sure...
1372	fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
1373	fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
1374	}
1375
1376	$SIGPIPE_R
1377	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
1378
1379	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec);
1380	}
1381
1382	*signal = \&_signal;
1383	&signal	1543	&signal
1384	}
1385
1386	sub AnyEvent::Base::signal::DESTROY {
1387	my ($signal, $cb) = @{$_[0]};
1388
1389	_sig_del;
1390
1391	delete $SIG_CB{$signal}{$cb};
1392
1393	$HAVE_ASYNC_INTERRUPT
1394	? delete $SIG_ASY{$signal}
1395	: # delete doesn't work with older perls - they then
1396	# print weird messages, or just unconditionally exit
1397	# instead of getting the default action.
1398	undef $SIG{$signal}
1399	unless keys %{ $SIG_CB{$signal} };
1400	}	1544	}
1401		1545
1402	# default implementation for ->child	1546	# default implementation for ->child
1403		1547
1404	our %PID_CB;	1548	our %PID_CB;
1405	our $CHLD_W;	1549	our $CHLD_W;
1406	our $CHLD_DELAY_W;	1550	our $CHLD_DELAY_W;
1407	our $WNOHANG;	1551	our $WNOHANG;
1408		1552
		1553	sub _emit_childstatus($$) {
		1554	my (undef, $rpid, $rstatus) = @_;
		1555
		1556	$_->($rpid, $rstatus)
		1557	for values %{ $PID_CB{$rpid} \|\| {} },
		1558	values %{ $PID_CB{0} \|\| {} };
		1559	}
		1560
1409	sub _sigchld {	1561	sub _sigchld {
		1562	my $pid;
		1563
		1564	AnyEvent->_emit_childstatus ($pid, $?)
1410	while (0 < (my $pid = waitpid -1, $WNOHANG)) {	1565	while ($pid = waitpid -1, $WNOHANG) > 0;
1411	$_->($pid, $?)
1412	for values %{ $PID_CB{$pid} \|\| {} },
1413	values %{ $PID_CB{0} \|\| {} };
1414	}
1415	}	1566	}
1416		1567
1417	sub child {	1568	sub child {
1418	my (undef, %arg) = @_;	1569	my (undef, %arg) = @_;
1419		1570
…		…
1426	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/	1577	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/
1427	? 1	1578	? 1
1428	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;	1579	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;
1429		1580
1430	unless ($CHLD_W) {	1581	unless ($CHLD_W) {
1431	$CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld);	1582	$CHLD_W = AE::signal CHLD => \&_sigchld;
1432	# child could be a zombie already, so make at least one round	1583	# child could be a zombie already, so make at least one round
1433	&_sigchld;	1584	&_sigchld;
1434	}	1585	}
1435		1586
1436	bless [$pid, $arg{cb}], "AnyEvent::Base::child"	1587	bless [$pid, $arg{cb}], "AnyEvent::Base::child"
…		…
1462	# never use more then 50% of the time for the idle watcher,	1613	# never use more then 50% of the time for the idle watcher,
1463	# within some limits	1614	# within some limits
1464	$w = 0.0001 if $w < 0.0001;	1615	$w = 0.0001 if $w < 0.0001;
1465	$w = 5 if $w > 5;	1616	$w = 5 if $w > 5;
1466		1617
1467	$w = AnyEvent->timer (after => $w, cb => $rcb);	1618	$w = AE::timer $w, 0, $rcb;
1468	} else {	1619	} else {
1469	# clean up...	1620	# clean up...
1470	undef $w;	1621	undef $w;
1471	undef $rcb;	1622	undef $rcb;
1472	}	1623	}
1473	};	1624	};
1474		1625
1475	$w = AnyEvent->timer (after => 0.05, cb => $rcb);	1626	$w = AE::timer 0.05, 0, $rcb;
1476		1627
1477	bless \\$cb, "AnyEvent::Base::idle"	1628	bless \\$cb, "AnyEvent::Base::idle"
1478	}	1629	}
1479		1630
1480	sub AnyEvent::Base::idle::DESTROY {	1631	sub AnyEvent::Base::idle::DESTROY {
…		…
1534	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};	1685	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};
1535	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]	1686	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]
1536	}	1687	}
1537		1688
1538	sub cb {	1689	sub cb {
1539	$_[0]{_ae_cb} = $_[1] if @_ > 1;	1690	my $cv = shift;
		1691
		1692	@_
		1693	and $cv->{_ae_cb} = shift
		1694	and $cv->{_ae_sent}
		1695	and (delete $cv->{_ae_cb})->($cv);
		1696
1540	$_[0]{_ae_cb}	1697	$cv->{_ae_cb}
1541	}	1698	}
1542		1699
1543	sub begin {	1700	sub begin {
1544	++$_[0]{_ae_counter};	1701	++$_[0]{_ae_counter};
1545	$_[0]{_ae_end_cb} = $_[1] if @_ > 1;	1702	$_[0]{_ae_end_cb} = $_[1] if @_ > 1;
…		…
1904	through AnyEvent. The benchmark creates a lot of timers (with a zero	2061	through AnyEvent. The benchmark creates a lot of timers (with a zero
1905	timeout) and I/O watchers (watching STDOUT, a pty, to become writable,	2062	timeout) and I/O watchers (watching STDOUT, a pty, to become writable,
1906	which it is), lets them fire exactly once and destroys them again.	2063	which it is), lets them fire exactly once and destroys them again.
1907		2064
1908	Source code for this benchmark is found as F<eg/bench> in the AnyEvent	2065	Source code for this benchmark is found as F<eg/bench> in the AnyEvent
1909	distribution.	2066	distribution. It uses the L<AE> interface, which makes a real difference
		2067	for the EV and Perl backends only.
1910		2068
1911	=head3 Explanation of the columns	2069	=head3 Explanation of the columns
1912		2070
1913	I<watcher> is the number of event watchers created/destroyed. Since	2071	I<watcher> is the number of event watchers created/destroyed. Since
1914	different event models feature vastly different performances, each event	2072	different event models feature vastly different performances, each event
…		…
1935	watcher.	2093	watcher.
1936		2094
1937	=head3 Results	2095	=head3 Results
1938		2096
1939	name watchers bytes create invoke destroy comment	2097	name watchers bytes create invoke destroy comment
1940	EV/EV 400000 224 0.47 0.35 0.27 EV native interface	2098	EV/EV 100000 223 0.47 0.43 0.27 EV native interface
1941	EV/Any 100000 224 2.88 0.34 0.27 EV + AnyEvent watchers	2099	EV/Any 100000 223 0.48 0.42 0.26 EV + AnyEvent watchers
1942	CoroEV/Any 100000 224 2.85 0.35 0.28 coroutines + Coro::Signal	2100	Coro::EV/Any 100000 223 0.47 0.42 0.26 coroutines + Coro::Signal
1943	Perl/Any 100000 452 4.13 0.73 0.95 pure perl implementation	2101	Perl/Any 100000 431 2.70 0.74 0.92 pure perl implementation
1944	Event/Event 16000 517 32.20 31.80 0.81 Event native interface	2102	Event/Event 16000 516 31.16 31.84 0.82 Event native interface
1945	Event/Any 16000 590 35.85 31.55 1.06 Event + AnyEvent watchers	2103	Event/Any 16000 1203 42.61 34.79 1.80 Event + AnyEvent watchers
1946	IOAsync/Any 16000 989 38.10 32.77 11.13 via IO::Async::Loop::IO_Poll	2104	IOAsync/Any 16000 1911 41.92 27.45 16.81 via IO::Async::Loop::IO_Poll
1947	IOAsync/Any 16000 990 37.59 29.50 10.61 via IO::Async::Loop::Epoll	2105	IOAsync/Any 16000 1726 40.69 26.37 15.25 via IO::Async::Loop::Epoll
1948	Glib/Any 16000 1357 102.33 12.31 51.00 quadratic behaviour	2106	Glib/Any 16000 1118 89.00 12.57 51.17 quadratic behaviour
1949	Tk/Any 2000 1860 27.20 66.31 14.00 SEGV with >> 2000 watchers	2107	Tk/Any 2000 1346 20.96 10.75 8.00 SEGV with >> 2000 watchers
1950	POE/Event 2000 6328 109.99 751.67 14.02 via POE::Loop::Event	2108	POE/Any 2000 6951 108.97 795.32 14.24 via POE::Loop::Event
1951	POE/Select 2000 6027 94.54 809.13 579.80 via POE::Loop::Select	2109	POE/Any 2000 6648 94.79 774.40 575.51 via POE::Loop::Select
1952		2110
1953	=head3 Discussion	2111	=head3 Discussion
1954		2112
1955	The benchmark does I<not> measure scalability of the event loop very	2113	The benchmark does I<not> measure scalability of the event loop very
1956	well. For example, a select-based event loop (such as the pure perl one)	2114	well. For example, a select-based event loop (such as the pure perl one)
…		…
1968	benchmark machine, handling an event takes roughly 1600 CPU cycles with	2126	benchmark machine, handling an event takes roughly 1600 CPU cycles with
1969	EV, 3100 CPU cycles with AnyEvent's pure perl loop and almost 3000000 CPU	2127	EV, 3100 CPU cycles with AnyEvent's pure perl loop and almost 3000000 CPU
1970	cycles with POE.	2128	cycles with POE.
1971		2129
1972	C<EV> is the sole leader regarding speed and memory use, which are both	2130	C<EV> is the sole leader regarding speed and memory use, which are both
1973	maximal/minimal, respectively. Even when going through AnyEvent, it uses	2131	maximal/minimal, respectively. When using the L<AE> API there is zero
		2132	overhead (when going through the AnyEvent API create is about 5-6 times
		2133	slower, with other times being equal, so still uses far less memory than
1974	far less memory than any other event loop and is still faster than Event	2134	any other event loop and is still faster than Event natively).
1975	natively.
1976		2135
1977	The pure perl implementation is hit in a few sweet spots (both the	2136	The pure perl implementation is hit in a few sweet spots (both the
1978	constant timeout and the use of a single fd hit optimisations in the perl	2137	constant timeout and the use of a single fd hit optimisations in the perl
1979	interpreter and the backend itself). Nevertheless this shows that it	2138	interpreter and the backend itself). Nevertheless this shows that it
1980	adds very little overhead in itself. Like any select-based backend its	2139	adds very little overhead in itself. Like any select-based backend its
…		…
2054	In this benchmark, we use 10000 socket pairs (20000 sockets), of which 100	2213	In this benchmark, we use 10000 socket pairs (20000 sockets), of which 100
2055	(1%) are active. This mirrors the activity of large servers with many	2214	(1%) are active. This mirrors the activity of large servers with many
2056	connections, most of which are idle at any one point in time.	2215	connections, most of which are idle at any one point in time.
2057		2216
2058	Source code for this benchmark is found as F<eg/bench2> in the AnyEvent	2217	Source code for this benchmark is found as F<eg/bench2> in the AnyEvent
2059	distribution.	2218	distribution. It uses the L<AE> interface, which makes a real difference
		2219	for the EV and Perl backends only.
2060		2220
2061	=head3 Explanation of the columns	2221	=head3 Explanation of the columns
2062		2222
2063	I<sockets> is the number of sockets, and twice the number of "servers" (as	2223	I<sockets> is the number of sockets, and twice the number of "servers" (as
2064	each server has a read and write socket end).	2224	each server has a read and write socket end).
…		…
2072	a new one that moves the timeout into the future.	2232	a new one that moves the timeout into the future.
2073		2233
2074	=head3 Results	2234	=head3 Results
2075		2235
2076	name sockets create request	2236	name sockets create request
2077	EV 20000 69.01 11.16	2237	EV 20000 62.66 7.99
2078	Perl 20000 73.32 35.87	2238	Perl 20000 68.32 32.64
2079	IOAsync 20000 157.00 98.14 epoll	2239	IOAsync 20000 174.06 101.15 epoll
2080	IOAsync 20000 159.31 616.06 poll	2240	IOAsync 20000 174.67 610.84 poll
2081	Event 20000 212.62 257.32	2241	Event 20000 202.69 242.91
2082	Glib 20000 651.16 1896.30	2242	Glib 20000 557.01 1689.52
2083	POE 20000 349.67 12317.24 uses POE::Loop::Event	2243	POE 20000 341.54 12086.32 uses POE::Loop::Event
2084		2244
2085	=head3 Discussion	2245	=head3 Discussion
2086		2246
2087	This benchmark I<does> measure scalability and overall performance of the	2247	This benchmark I<does> measure scalability and overall performance of the
2088	particular event loop.	2248	particular event loop.
…		…
2398	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2558	L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.
2399		2559
2400	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2560	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2401	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2561	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2402	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2562	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2403	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>.	2563	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>.
2404		2564
2405	Non-blocking file handles, sockets, TCP clients and	2565	Non-blocking file handles, sockets, TCP clients and
2406	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.	2566	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2407		2567
2408	Asynchronous DNS: L<AnyEvent::DNS>.	2568	Asynchronous DNS: L<AnyEvent::DNS>.

Diff Legend

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

Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.249 by root, Mon Jul 20 06:00:42 2009 UTC vs. Revision 1.279 by root, Sun Aug 9 16:05:11 2009 UTC

Diff Legend

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.249 by root, Mon Jul 20 06:00:42 2009 UTC vs.
Revision 1.279 by root, Sun Aug 9 16:05:11 2009 UTC