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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.354 by root, Thu Aug 11 21:26:39 2011 UTC vs.
Revision 1.386 by root, Mon Sep 26 11:32:19 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
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::FLTK 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 }
…		…
1045	It should use C<postpone>:	1049	It should use C<postpone>:
1046		1050
1047	AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later	1051	AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later
1048	if $some_error_condition;	1052	if $some_error_condition;
1049		1053
		1054	=item AnyEvent::log $level, $msg[, @args]
		1055
		1056	Log the given C<$msg> at the given C<$level>.
		1057
		1058	If L<AnyEvent::Log> is not loaded then this function makes a simple test
		1059	to see whether the message will be logged. If the test succeeds it will
		1060	load AnyEvent::Log and call C<AnyEvent::Log::log> - consequently, look at
		1061	the L<AnyEvent::Log> documentation for details.
		1062
		1063	If the test fails it will simply return. Right now this happens when a
		1064	numerical loglevel is used and it is larger than the level specified via
		1065	C<$ENV{PERL_ANYEVENT_VERBOSE}>.
		1066
		1067	If you want to sprinkle loads of logging calls around your code, consider
		1068	creating a logger callback with the C<AnyEvent::Log::logger> function,
		1069	which can reduce typing, codesize and can reduce the logging overhead
		1070	enourmously.
		1071
1050	=back	1072	=back
1051		1073
1052	=head1 WHAT TO DO IN A MODULE	1074	=head1 WHAT TO DO IN A MODULE
1053		1075
1054	As a module author, you should C<use AnyEvent> and call AnyEvent methods	1076	As a module author, you should C<use AnyEvent> and call AnyEvent methods
…		…
1110		1132
1111		1133
1112	=head1 OTHER MODULES	1134	=head1 OTHER MODULES
1113		1135
1114	The following is a non-exhaustive list of additional modules that use	1136	The following is a non-exhaustive list of additional modules that use
1115	AnyEvent as a client and can therefore be mixed easily with other AnyEvent	1137	AnyEvent as a client and can therefore be mixed easily with other
1116	modules and other event loops in the same program. Some of the modules	1138	AnyEvent modules and other event loops in the same program. Some of the
1117	come as part of AnyEvent, the others are available via CPAN.	1139	modules come as part of AnyEvent, the others are available via CPAN (see
		1140	L<http://search.cpan.org/search?m=module&q=anyevent%3A%3A*> for
		1141	a longer non-exhaustive list), and the list is heavily biased towards
		1142	modules of the AnyEvent author himself :)
1118		1143
1119	=over 4	1144	=over 4
1120		1145
1121	=item L<AnyEvent::Util>	1146	=item L<AnyEvent::Util>
1122		1147
…		…
1142	=item L<AnyEvent::HTTP>, L<AnyEvent::IRC>, L<AnyEvent::XMPP>, L<AnyEvent::GPSD>, L<AnyEvent::IGS>, L<AnyEvent::FCP>	1167	=item L<AnyEvent::HTTP>, L<AnyEvent::IRC>, L<AnyEvent::XMPP>, L<AnyEvent::GPSD>, L<AnyEvent::IGS>, L<AnyEvent::FCP>
1143		1168
1144	Implement event-based interfaces to the protocols of the same name (for	1169	Implement event-based interfaces to the protocols of the same name (for
1145	the curious, IGS is the International Go Server and FCP is the Freenet	1170	the curious, IGS is the International Go Server and FCP is the Freenet
1146	Client Protocol).	1171	Client Protocol).
1147
1148	=item L<AnyEvent::Handle::UDP>
1149
1150	Here be danger!
1151
1152	As Pauli would put it, "Not only is it not right, it's not even wrong!" -
1153	there are so many things wrong with AnyEvent::Handle::UDP, most notably
1154	its use of a stream-based API with a protocol that isn't streamable, that
1155	the only way to improve it is to delete it.
1156
1157	It features data corruption (but typically only under load) and general
1158	confusion. On top, the author is not only clueless about UDP but also
1159	fact-resistant - some gems of his understanding: "connect doesn't work
1160	with UDP", "UDP packets are not IP packets", "UDP only has datagrams, not
1161	packets", "I don't need to implement proper error checking as UDP doesn't
1162	support error checking" and so on - he doesn't even understand what's
1163	wrong with his module when it is explained to him.
1164
1165	=item L<AnyEvent::DBI>
1166
1167	Executes L<DBI> requests asynchronously in a proxy process for you,
1168	notifying you in an event-based way when the operation is finished.
1169		1172
1170	=item L<AnyEvent::AIO>	1173	=item L<AnyEvent::AIO>
1171		1174
1172	Truly asynchronous (as opposed to non-blocking) I/O, should be in the	1175	Truly asynchronous (as opposed to non-blocking) I/O, should be in the
1173	toolbox of every event programmer. AnyEvent::AIO transparently fuses	1176	toolbox of every event programmer. AnyEvent::AIO transparently fuses
1174	L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based	1177	L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based
1175	file I/O, and much more.	1178	file I/O, and much more.
1176		1179
		1180	=item L<AnyEvent::Filesys::Notify>
		1181
		1182	AnyEvent is good for non-blocking stuff, but it can't detect file or
		1183	path changes (e.g. "watch this directory for new files", "watch this
		1184	file for changes"). The L<AnyEvent::Filesys::Notify> module promises to
		1185	do just that in a portbale fashion, supporting inotify on GNU/Linux and
		1186	some weird, without doubt broken, stuff on OS X to monitor files. It can
		1187	fall back to blocking scans at regular intervals transparently on other
		1188	platforms, so it's about as portable as it gets.
		1189
		1190	(I haven't used it myself, but I haven't heard anybody complaining about
		1191	it yet).
		1192
		1193	=item L<AnyEvent::DBI>
		1194
		1195	Executes L<DBI> requests asynchronously in a proxy process for you,
		1196	notifying you in an event-based way when the operation is finished.
		1197
1177	=item L<AnyEvent::HTTPD>	1198	=item L<AnyEvent::HTTPD>
1178		1199
1179	A simple embedded webserver.	1200	A simple embedded webserver.
1180		1201
1181	=item L<AnyEvent::FastPing>	1202	=item L<AnyEvent::FastPing>
1182		1203
1183	The fastest ping in the west.	1204	The fastest ping in the west.
1184		1205
1185	=item L<Coro>	1206	=item L<Coro>
1186		1207
1187	Has special support for AnyEvent via L<Coro::AnyEvent>.	1208	Has special support for AnyEvent via L<Coro::AnyEvent>, which allows you
		1209	to simply invert the flow control - don't call us, we will call you:
		1210
		1211	async {
		1212	Coro::AnyEvent::sleep 5; # creates a 5s timer and waits for it
		1213	print "5 seconds later!\n";
		1214
		1215	Coro::AnyEvent::readable *STDIN; # uses an I/O watcher
		1216	my $line = <STDIN>; # works for ttys
		1217
		1218	AnyEvent::HTTP::http_get "url", Coro::rouse_cb;
		1219	my ($body, $hdr) = Coro::rouse_wait;
		1220	};
1188		1221
1189	=back	1222	=back
1190		1223
1191	=cut	1224	=cut
1192		1225
…		…
1202		1235
1203	BEGIN { AnyEvent::common_sense }	1236	BEGIN { AnyEvent::common_sense }
1204		1237
1205	use Carp ();	1238	use Carp ();
1206		1239
1207	our $VERSION = '5.34';	1240	our $VERSION = '6.02';
1208	our $MODEL;	1241	our $MODEL;
1209
1210	our $AUTOLOAD;
1211	our @ISA;	1242	our @ISA;
1212
1213	our @REGISTRY;	1243	our @REGISTRY;
1214
1215	our $VERBOSE;	1244	our $VERBOSE;
		1245	our $MAX_SIGNAL_LATENCY = 10;
		1246	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred
1216		1247
1217	BEGIN {	1248	BEGIN {
1218	require "AnyEvent/constants.pl";	1249	require "AnyEvent/constants.pl";
1219		1250
1220	eval "sub TAINT (){" . (${^TAINT}*1) . "}";	1251	eval "sub TAINT (){" . (${^TAINT}*1) . "}";
1221		1252
1222	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}	1253	delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1223	if ${^TAINT};	1254	if ${^TAINT};
1224		1255
1225	$VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;	1256	$ENV{"PERL_ANYEVENT_$_"} = $ENV{"AE_$_"}
		1257	for grep s/^AE_// && !exists $ENV{"PERL_ANYEVENT_$_"}, keys %ENV;
1226		1258
1227	}	1259	@ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = ()
		1260	if ${^TAINT};
1228		1261
1229	our $MAX_SIGNAL_LATENCY = 10;	1262	# $ENV{PERL_ANYEVENT_xxx} now valid
1230		1263
1231	our %PROTOCOL; # (ipv4\|ipv6) => (1\|2), higher numbers are preferred	1264	$VERBOSE = length $ENV{PERL_ANYEVENT_VERBOSE} ? $ENV{PERL_ANYEVENT_VERBOSE}*1 : 4;
1232		1265
1233	{
1234	my $idx;	1266	my $idx;
1235	$PROTOCOL{$_} = ++$idx	1267	$PROTOCOL{$_} = ++$idx
1236	for reverse split /\s,\s/,	1268	for reverse split /\s,\s/,
1237	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1269	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1238	}	1270	}
1239		1271
		1272	our @post_detect;
		1273
		1274	sub post_detect(&) {
		1275	my ($cb) = @_;
		1276
		1277	push @post_detect, $cb;
		1278
		1279	defined wantarray
		1280	? bless \$cb, "AnyEvent::Util::postdetect"
		1281	: ()
		1282	}
		1283
		1284	sub AnyEvent::Util::postdetect::DESTROY {
		1285	@post_detect = grep $_ != ${$_[0]}, @post_detect;
		1286	}
		1287
		1288	our $POSTPONE_W;
		1289	our @POSTPONE;
		1290
		1291	sub _postpone_exec {
		1292	undef $POSTPONE_W;
		1293
		1294	&{ shift @POSTPONE }
		1295	while @POSTPONE;
		1296	}
		1297
		1298	sub postpone(&) {
		1299	push @POSTPONE, shift;
		1300
		1301	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
		1302
		1303	()
		1304	}
		1305
		1306	sub log($$;@) {
		1307	# only load the big bloated module when we actually are about to log something
		1308	if ($_[0] <= ($VERBOSE \|\| 1)) { # also catches non-numeric levels(!) and fatal
		1309	require AnyEvent::Log; # among other things, sets $VERBOSE to 9
		1310	# AnyEvent::Log overwrites this function
		1311	goto &log;
		1312	}
		1313
		1314	0 # not logged
		1315	}
		1316
		1317	sub logger($;$) {
		1318	package AnyEvent::Log;
		1319
		1320	my ($level, $renabled) = @_;
		1321
		1322	$$renabled = $level <= $VERBOSE;
		1323
		1324	my $pkg = (caller)[0];
		1325
		1326	my $logger = [$pkg, $level, $renabled];
		1327
		1328	our %LOGGER;
		1329	$LOGGER{$logger+0} = $logger;
		1330
		1331	require AnyEvent::Util;
		1332	my $guard = AnyEvent::Util::guard (sub {
		1333	# "clean up"
		1334	delete $LOGGER{$logger+0};
		1335	});
		1336
		1337	sub {
		1338	return 0 unless $$renabled;
		1339
		1340	$guard if 0; # keep guard alive, but don't cause runtime overhead
		1341	require AnyEvent::Log unless $AnyEvent::Log::VERSION;
		1342	package AnyEvent::Log;
		1343	_log ($logger->[0], $level, @_) # logger->[0] has been converted at load time
		1344	}
		1345	}
		1346
		1347	if (length $ENV{PERL_ANYEVENT_LOG}) {
		1348	require AnyEvent::Log; # AnyEvent::Log does the thing for us
		1349	}
		1350
1240	my @models = (	1351	our @models = (
1241	[EV:: => AnyEvent::Impl::EV:: , 1],	1352	[EV:: => AnyEvent::Impl::EV::],
1242	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],	1353	[AnyEvent::Loop:: => AnyEvent::Impl::Perl::],
1243	# everything below here will not (normally) be autoprobed	1354	# everything below here will not (normally) be autoprobed
1244	# as the pure perl backend should work everywhere	1355	# as the pure perl backend should work everywhere
1245	# and is usually faster	1356	# and is usually faster
		1357	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package, so msut be near the top
1246	[Event:: => AnyEvent::Impl::Event::, 1],	1358	[Event:: => AnyEvent::Impl::Event::], # slow, stable
1247	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers	1359	[Glib:: => AnyEvent::Impl::Glib::], # becomes extremely slow with many watchers
		1360	# everything below here should not be autoloaded
1248	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1361	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
1249	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1250	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1362	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1251	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1363	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1252	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1364	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1253	[Wx:: => AnyEvent::Impl::POE::],	1365	[Wx:: => AnyEvent::Impl::POE::],
1254	[Prima:: => AnyEvent::Impl::POE::],	1366	[Prima:: => AnyEvent::Impl::POE::],
1255	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::],	1367	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1256	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],	1368	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1257	[FLTK:: => AnyEvent::Impl::FLTK::],	1369	[FLTK:: => AnyEvent::Impl::FLTK::],
1258	);	1370	);
1259		1371
1260	our %method = map +($_ => 1),	1372	our @isa_hook;
		1373
		1374	sub _isa_set {
		1375	my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
		1376
		1377	@{"$pkg[$_-1]::ISA"} = $pkg[$_]
		1378	for 1 .. $#pkg;
		1379
		1380	grep $_ && $_->[1], @isa_hook
		1381	and AE::_reset ();
		1382	}
		1383
		1384	# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
		1385	sub _isa_hook($$;$) {
		1386	my ($i, $pkg, $reset_ae) = @_;
		1387
		1388	$isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
		1389
		1390	_isa_set;
		1391	}
		1392
		1393	# all autoloaded methods reserve the complete glob, not just the method slot.
		1394	# due to bugs in perls method cache implementation.
1261	qw(io timer time now now_update signal child idle condvar DESTROY);	1395	our @methods = qw(io timer time now now_update signal child idle condvar);
1262
1263	our @post_detect;
1264
1265	sub post_detect(&) {
1266	my ($cb) = @_;
1267
1268	push @post_detect, $cb;
1269
1270	defined wantarray
1271	? bless \$cb, "AnyEvent::Util::postdetect"
1272	: ()
1273	}
1274
1275	sub AnyEvent::Util::postdetect::DESTROY {
1276	@post_detect = grep $_ != ${$_[0]}, @post_detect;
1277	}
1278		1396
1279	sub detect() {	1397	sub detect() {
		1398	return $MODEL if $MODEL; # some programs keep references to detect
		1399
		1400	# IO::Async::Loop::AnyEvent is extremely evil, refuse to work with it
		1401	# the author knows about the problems and what it does to AnyEvent as a whole
		1402	# (and the ability of others to use AnyEvent), but simply wants to abuse AnyEvent
		1403	# anyway.
		1404	AnyEvent::log fatal => "AnyEvent: IO::Async::Loop::AnyEvent detected - this module is broken by design,\n"
		1405	. "abuses internals and breaks AnyEvent, will not continue."
		1406	if exists $INC{"IO/Async/Loop/AnyEvent.pm"};
		1407
		1408	local $!; # for good measure
		1409	local $SIG{__DIE__}; # we use eval
		1410
1280	# free some memory	1411	# free some memory
1281	*detect = sub () { $MODEL };	1412	*detect = sub () { $MODEL };
		1413	# undef &func doesn't correctly update the method cache. grmbl.
		1414	# so we delete the whole glob. grmbl.
		1415	# otoh, perl doesn't let me undef an active usb, but it lets me free
		1416	# a glob with an active sub. hrm. i hope it works, but perl is
		1417	# usually buggy in this department. sigh.
		1418	delete @{"AnyEvent::"}{@methods};
		1419	undef @methods;
1282		1420
1283	local $!; # for good measure
1284	local $SIG{__DIE__};
1285
1286	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1421	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1287	my $model = "AnyEvent::Impl::$1";	1422	my $model = $1;
		1423	$model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1288	if (eval "require $model") {	1424	if (eval "require $model") {
		1425	AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.";
1289	$MODEL = $model;	1426	$MODEL = $model;
1290	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;
1291	} else {	1427	} else {
1292	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;	1428	AnyEvent::log 4 => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1293	}	1429	}
1294	}	1430	}
1295		1431
1296	# check for already loaded models	1432	# check for already loaded models
1297	unless ($MODEL) {	1433	unless ($MODEL) {
1298	for (@REGISTRY, @models) {	1434	for (@REGISTRY, @models) {
1299	my ($package, $model) = @$_;	1435	my ($package, $model) = @$_;
1300	if (${"$package\::VERSION"} > 0) {	1436	if (${"$package\::VERSION"} > 0) {
1301	if (eval "require $model") {	1437	if (eval "require $model") {
		1438	AnyEvent::log 7 => "autodetected model '$model', using it.";
1302	$MODEL = $model;	1439	$MODEL = $model;
1303	warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2;
1304	last;	1440	last;
1305	}	1441	}
1306	}	1442	}
1307	}	1443	}
1308		1444
1309	unless ($MODEL) {	1445	unless ($MODEL) {
1310	# try to autoload a model	1446	# try to autoload a model
1311	for (@REGISTRY, @models) {	1447	for (@REGISTRY, @models) {
1312	my ($package, $model, $autoload) = @$_;	1448	my ($package, $model) = @$_;
1313	if (	1449	if (
1314	$autoload
1315	and eval "require $package"	1450	eval "require $package"
1316	and ${"$package\::VERSION"} > 0	1451	and ${"$package\::VERSION"} > 0
1317	and eval "require $model"	1452	and eval "require $model"
1318	) {	1453	) {
		1454	AnyEvent::log 7 => "autoloaded model '$model', using it.";
1319	$MODEL = $model;	1455	$MODEL = $model;
1320	warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2;
1321	last;	1456	last;
1322	}	1457	}
1323	}	1458	}
1324		1459
1325	$MODEL	1460	$MODEL
1326	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n";	1461	or AnyEvent::log fatal => "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1327	}	1462	}
1328	}	1463	}
1329		1464
1330	@models = (); # free probe data	1465	# free memory only needed for probing
		1466	undef @models;
		1467	undef @REGISTRY;
1331		1468
1332	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1469	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1333	unshift @ISA, $MODEL;
1334		1470
1335	# now nuke some methods that are overridden by the backend.	1471	# now nuke some methods that are overridden by the backend.
1336	# SUPER is not allowed.	1472	# SUPER usage is not allowed in these.
1337	for (qw(time signal child idle)) {	1473	for (qw(time signal child idle)) {
1338	undef &{"AnyEvent::Base::$_"}	1474	undef &{"AnyEvent::Base::$_"}
1339	if defined &{"$MODEL\::$_"};	1475	if defined &{"$MODEL\::$_"};
1340	}	1476	}
1341		1477
		1478	_isa_set;
		1479
		1480	# we're officially open!
		1481
1342	if ($ENV{PERL_ANYEVENT_STRICT}) {	1482	if ($ENV{PERL_ANYEVENT_STRICT}) {
1343	eval { require AnyEvent::Strict };	1483	require AnyEvent::Strict;
1344	warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1345	if $@ && $VERBOSE;
1346	}	1484	}
1347		1485
		1486	if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
		1487	require AnyEvent::Debug;
		1488	AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
		1489	}
		1490
		1491	if (length $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
		1492	require AnyEvent::Socket;
		1493	require AnyEvent::Debug;
		1494
		1495	my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
		1496	$shell =~ s/\$\$/$$/g;
		1497
		1498	my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
		1499	$AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
		1500	}
		1501
		1502	# now the anyevent environment is set up as the user told us to, so
		1503	# call the actual user code - post detects
		1504
1348	(shift @post_detect)->() while @post_detect;	1505	(shift @post_detect)->() while @post_detect;
		1506	undef @post_detect;
1349		1507
1350	*post_detect = sub(&) {	1508	*post_detect = sub(&) {
1351	shift->();	1509	shift->();
1352		1510
1353	undef	1511	undef
1354	};	1512	};
1355		1513
1356	$MODEL	1514	$MODEL
1357	}	1515	}
1358		1516
1359	sub AUTOLOAD {	1517	for my $name (@methods) {
1360	(my $func = $AUTOLOAD) =~ s/.*://;	1518	*$name = sub {
1361
1362	$method{$func}
1363	or Carp::croak "$func: not a valid AnyEvent class method";
1364
1365	detect;	1519	detect;
1366		1520	# we use goto because
1367	my $class = shift;	1521	# a) it makes the thunk more transparent
1368	$class->$func (@_);	1522	# b) it allows us to delete the thunk later
1369	}	1523	goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
1370		1524	};
1371	our $POSTPONE_W;
1372	our @POSTPONE;
1373
1374	sub _postpone_exec {
1375	undef $POSTPONE_W;
1376	(pop @POSTPONE)->()
1377	while @POSTPONE;
1378	}
1379
1380	sub postpone(&) {
1381	push @POSTPONE, shift;
1382
1383	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
1384
1385	()
1386	}	1525	}
1387		1526
1388	# utility function to dup a filehandle. this is used by many backends	1527	# utility function to dup a filehandle. this is used by many backends
1389	# to support binding more than one watcher per filehandle (they usually	1528	# to support binding more than one watcher per filehandle (they usually
1390	# allow only one watcher per fd, so we dup it to get a different one).	1529	# allow only one watcher per fd, so we dup it to get a different one).
…		…
1414		1553
1415	package AE;	1554	package AE;
1416		1555
1417	our $VERSION = $AnyEvent::VERSION;	1556	our $VERSION = $AnyEvent::VERSION;
1418		1557
		1558	sub _reset() {
		1559	eval q{
1419	# fall back to the main API by default - backends and AnyEvent::Base	1560	# fall back to the main API by default - backends and AnyEvent::Base
1420	# implementations can overwrite these.	1561	# implementations can overwrite these.
1421		1562
1422	sub io($$$) {	1563	sub io($$$) {
1423	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])	1564	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1424	}	1565	}
1425		1566
1426	sub timer($$$) {	1567	sub timer($$$) {
1427	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])	1568	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1428	}	1569	}
1429		1570
1430	sub signal($$) {	1571	sub signal($$) {
1431	AnyEvent->signal (signal => $_[0], cb => $_[1])	1572	AnyEvent->signal (signal => $_[0], cb => $_[1])
1432	}	1573	}
1433		1574
1434	sub child($$) {	1575	sub child($$) {
1435	AnyEvent->child (pid => $_[0], cb => $_[1])	1576	AnyEvent->child (pid => $_[0], cb => $_[1])
1436	}	1577	}
1437		1578
1438	sub idle($) {	1579	sub idle($) {
1439	AnyEvent->idle (cb => $_[0])	1580	AnyEvent->idle (cb => $_[0]);
1440	}	1581	}
1441		1582
1442	sub cv(;&) {	1583	sub cv(;&) {
1443	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())	1584	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1444	}	1585	}
1445		1586
1446	sub now() {	1587	sub now() {
1447	AnyEvent->now	1588	AnyEvent->now
1448	}	1589	}
1449		1590
1450	sub now_update() {	1591	sub now_update() {
1451	AnyEvent->now_update	1592	AnyEvent->now_update
1452	}	1593	}
1453		1594
1454	sub time() {	1595	sub time() {
1455	AnyEvent->time	1596	AnyEvent->time
1456	}	1597	}
1457		1598
1458	*postpone = \&AnyEvent::postpone;	1599	*postpone = \&AnyEvent::postpone;
		1600	*log = \&AnyEvent::log;
		1601	};
		1602	die if $@;
		1603	}
		1604
		1605	BEGIN { _reset }
1459		1606
1460	package AnyEvent::Base;	1607	package AnyEvent::Base;
1461		1608
1462	# default implementations for many methods	1609	# default implementations for many methods
1463		1610
1464	sub time {	1611	sub time {
1465	eval q{ # poor man's autoloading {}	1612	eval q{ # poor man's autoloading {}
1466	# probe for availability of Time::HiRes	1613	# probe for availability of Time::HiRes
1467	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1614	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1468	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;	1615	*time = sub { Time::HiRes::time () };
1469	*AE::time = \&Time::HiRes::time;	1616	*AE::time = \& Time::HiRes::time ;
		1617	*now = \&time;
		1618	AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy.";
1470	# if (eval "use POSIX (); (POSIX::times())...	1619	# if (eval "use POSIX (); (POSIX::times())...
1471	} else {	1620	} else {
		1621	*time = sub { CORE::time };
		1622	*AE::time = sub (){ CORE::time };
		1623	*now = \&time;
1472	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;	1624	AnyEvent::log 3 => "using built-in time(), WARNING, no sub-second resolution!";
1473	*AE::time = sub (){ time }; # epic fail
1474	}	1625	}
1475
1476	*time = sub { AE::time }; # different prototypes
1477	};	1626	};
1478	die if $@;	1627	die if $@;
1479		1628
1480	&time	1629	&time
1481	}	1630	}
1482		1631
1483	*now = \&time;	1632	*now = \&time;
1484
1485	sub now_update { }	1633	sub now_update { }
1486		1634
1487	sub _poll {	1635	sub _poll {
1488	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";	1636	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
1489	}	1637	}
…		…
1575		1723
1576	sub signal {	1724	sub signal {
1577	eval q{ # poor man's autoloading {}	1725	eval q{ # poor man's autoloading {}
1578	# probe for availability of Async::Interrupt	1726	# probe for availability of Async::Interrupt
1579	if (_have_async_interrupt) {	1727	if (_have_async_interrupt) {
1580	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;	1728	AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling.";
1581		1729
1582	$SIGPIPE_R = new Async::Interrupt::EventPipe;	1730	$SIGPIPE_R = new Async::Interrupt::EventPipe;
1583	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;	1731	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1584		1732
1585	} else {	1733	} else {
1586	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;	1734	AnyEvent::log 8 => "using emulated perl signal handling with latency timer.";
1587		1735
1588	if (AnyEvent::WIN32) {	1736	if (AnyEvent::WIN32) {
1589	require AnyEvent::Util;	1737	require AnyEvent::Util;
1590		1738
1591	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();	1739	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
…		…
1667	: sysread $SIGPIPE_R, (my $dummy), 9;	1815	: sysread $SIGPIPE_R, (my $dummy), 9;
1668		1816
1669	while (%SIG_EV) {	1817	while (%SIG_EV) {
1670	for (keys %SIG_EV) {	1818	for (keys %SIG_EV) {
1671	delete $SIG_EV{$_};	1819	delete $SIG_EV{$_};
1672	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1820	&$_ for values %{ $SIG_CB{$_} \|\| {} };
1673	}	1821	}
1674	}	1822	}
1675	};	1823	};
1676	};	1824	};
1677	die if $@;	1825	die if $@;
…		…
1744		1892
1745	my ($cb, $w, $rcb) = $arg{cb};	1893	my ($cb, $w, $rcb) = $arg{cb};
1746		1894
1747	$rcb = sub {	1895	$rcb = sub {
1748	if ($cb) {	1896	if ($cb) {
1749	$w = _time;	1897	$w = AE::time;
1750	&$cb;	1898	&$cb;
1751	$w = _time - $w;	1899	$w = AE::time - $w;
1752		1900
1753	# never use more then 50% of the time for the idle watcher,	1901	# never use more then 50% of the time for the idle watcher,
1754	# within some limits	1902	# within some limits
1755	$w = 0.0001 if $w < 0.0001;	1903	$w = 0.0001 if $w < 0.0001;
1756	$w = 5 if $w > 5;	1904	$w = 5 if $w > 5;
…		…
1885	$Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and	2033	$Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and
1886	so on.	2034	so on.
1887		2035
1888	=head1 ENVIRONMENT VARIABLES	2036	=head1 ENVIRONMENT VARIABLES
1889		2037
1890	The following environment variables are used by this module or its	2038	AnyEvent supports a number of environment variables that tune the
1891	submodules.	2039	runtime behaviour. They are usually evaluated when AnyEvent is
		2040	loaded, initialised, or a submodule that uses them is loaded. Many of
		2041	them also cause AnyEvent to load additional modules - for example,
		2042	C<PERL_ANYEVENT_DEBUG_WRAP> causes the L<AnyEvent::Debug> module to be
		2043	loaded.
1892		2044
1893	Note that AnyEvent will remove I<all> environment variables starting with	2045	All the environment variables documented here start with
1894	C<PERL_ANYEVENT_> from C<%ENV> when it is loaded while taint mode is	2046	C<PERL_ANYEVENT_>, which is what AnyEvent considers its own
1895	enabled.	2047	namespace. Other modules are encouraged (but by no means required) to use
		2048	C<PERL_ANYEVENT_SUBMODULE> if they have registered the AnyEvent::Submodule
		2049	namespace on CPAN, for any submodule. For example, L<AnyEvent::HTTP> could
		2050	be expected to use C<PERL_ANYEVENT_HTTP_PROXY> (it should not access env
		2051	variables starting with C<AE_>, see below).
		2052
		2053	All variables can also be set via the C<AE_> prefix, that is, instead
		2054	of setting C<PERL_ANYEVENT_VERBOSE> you can also set C<AE_VERBOSE>. In
		2055	case there is a clash btween anyevent and another program that uses
		2056	C<AE_something> you can set the corresponding C<PERL_ANYEVENT_something>
		2057	variable to the empty string, as those variables take precedence.
		2058
		2059	When AnyEvent is first loaded, it copies all C<AE_xxx> env variables
		2060	to their C<PERL_ANYEVENT_xxx> counterpart unless that variable already
		2061	exists. If taint mode is on, then AnyEvent will remove I<all> environment
		2062	variables starting with C<PERL_ANYEVENT_> from C<%ENV> (or replace them
		2063	with C<undef> or the empty string, if the corresaponding C<AE_> variable
		2064	is set).
		2065
		2066	The exact algorithm is currently:
		2067
		2068	1. if taint mode enabled, delete all PERL_ANYEVENT_xyz variables from %ENV
		2069	2. copy over AE_xyz to PERL_ANYEVENT_xyz unless the latter alraedy exists
		2070	3. if taint mode enabled, set all PERL_ANYEVENT_xyz variables to undef.
		2071
		2072	This ensures that child processes will not see the C<AE_> variables.
		2073
		2074	The following environment variables are currently known to AnyEvent:
1896		2075
1897	=over 4	2076	=over 4
1898		2077
1899	=item C<PERL_ANYEVENT_VERBOSE>	2078	=item C<PERL_ANYEVENT_VERBOSE>
1900		2079
1901	By default, AnyEvent will be completely silent except in fatal	2080	By default, AnyEvent will only log messages with loglevel C<3>
1902	conditions. You can set this environment variable to make AnyEvent more	2081	(C<critical>) or higher (see L<AnyEvent::Log>). You can set this
		2082	environment variable to a numerical loglevel to make AnyEvent more (or
1903	talkative.	2083	less) talkative.
1904		2084
		2085	If you want to do more than just set the global logging level
		2086	you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more
		2087	complex specifications.
		2088
		2089	When set to C<0> (C<off>), then no messages whatsoever will be logged with
		2090	the default logging settings.
		2091
1905	When set to C<1> or higher, causes AnyEvent to warn about unexpected	2092	When set to C<5> or higher (C<warn>), causes AnyEvent to warn about
1906	conditions, such as not being able to load the event model specified by	2093	unexpected conditions, such as not being able to load the event model
1907	C<PERL_ANYEVENT_MODEL>.	2094	specified by C<PERL_ANYEVENT_MODEL>, or a guard callback throwing an
		2095	exception - this is the minimum recommended level.
1908		2096
1909	When set to C<2> or higher, cause AnyEvent to report to STDERR which event	2097	When set to C<7> or higher (info), cause AnyEvent to report which event model it
1910	model it chooses.	2098	chooses.
1911		2099
1912	When set to C<8> or higher, then AnyEvent will report extra information on	2100	When set to C<8> or higher (debug), then AnyEvent will report extra information on
1913	which optional modules it loads and how it implements certain features.	2101	which optional modules it loads and how it implements certain features.
		2102
		2103	=item C<PERL_ANYEVENT_LOG>
		2104
		2105	Accepts rather complex logging specifications. For example, you could log
		2106	all C<debug> messages of some module to stderr, warnings and above to
		2107	stderr, and errors and above to syslog, with:
		2108
		2109	PERL_ANYEVENT_LOG=Some::Module=debug,+log:filter=warn,+%syslog:%syslog=error,syslog
		2110
		2111	For the rather extensive details, see L<AnyEvent::Log>.
		2112
		2113	This variable is evaluated when AnyEvent (or L<AnyEvent::Log>) is loaded,
		2114	so will take effect even before AnyEvent has initialised itself.
		2115
		2116	Note that specifying this environment variable causes the L<AnyEvent::Log>
		2117	module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only
		2118	using the latter saves a few hundred kB of memory until the first message
		2119	is being logged.
1914		2120
1915	=item C<PERL_ANYEVENT_STRICT>	2121	=item C<PERL_ANYEVENT_STRICT>
1916		2122
1917	AnyEvent does not do much argument checking by default, as thorough	2123	AnyEvent does not do much argument checking by default, as thorough
1918	argument checking is very costly. Setting this variable to a true value	2124	argument checking is very costly. Setting this variable to a true value
…		…
1925	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>	2131	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1926	>>, it is definitely recommended to keep it off in production. Keeping	2132	>>, it is definitely recommended to keep it off in production. Keeping
1927	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs	2133	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1928	can be very useful, however.	2134	can be very useful, however.
1929		2135
		2136	=item C<PERL_ANYEVENT_DEBUG_SHELL>
		2137
		2138	If this env variable is nonempty, then its contents will be interpreted by
		2139	C<AnyEvent::Socket::parse_hostport> and C<AnyEvent::Debug::shell> (after
		2140	replacing every occurance of C<$$> by the process pid). The shell object
		2141	is saved in C<$AnyEvent::Debug::SHELL>.
		2142
		2143	This happens when the first watcher is created.
		2144
		2145	For example, to bind a debug shell on a unix domain socket in
		2146	F<< /tmp/debug<pid>.sock >>, you could use this:
		2147
		2148	PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
		2149	# connect with e.g.: socat readline /tmp/debug123.sock
		2150
		2151	Or to bind to tcp port 4545 on localhost:
		2152
		2153	PERL_ANYEVENT_DEBUG_SHELL=127.0.0.1:4545 perlprog
		2154	# connect with e.g.: telnet localhost 4545
		2155
		2156	Note that creating sockets in F</tmp> or on localhost is very unsafe on
		2157	multiuser systems.
		2158
		2159	=item C<PERL_ANYEVENT_DEBUG_WRAP>
		2160
		2161	Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
		2162	debugging purposes. See C<AnyEvent::Debug::wrap> for details.
		2163
1930	=item C<PERL_ANYEVENT_MODEL>	2164	=item C<PERL_ANYEVENT_MODEL>
1931		2165
1932	This can be used to specify the event model to be used by AnyEvent, before	2166	This can be used to specify the event model to be used by AnyEvent, before
1933	auto detection and -probing kicks in. It must be a string consisting	2167	auto detection and -probing kicks in.
1934	entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended	2168
		2169	It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
		2170	or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1935	and the resulting module name is loaded and if the load was successful,	2171	resulting module name is loaded and - if the load was successful - used as
1936	used as event model. If it fails to load AnyEvent will proceed with	2172	event model backend. If it fails to load then AnyEvent will proceed with
1937	auto detection and -probing.	2173	auto detection and -probing.
1938		2174
1939	This functionality might change in future versions.	2175	If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
		2176	nothing gets prepended and the module name is used as-is (hint: C<::> at
		2177	the end of a string designates a module name and quotes it appropriately).
1940		2178
1941	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you	2179	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1942	could start your program like this:	2180	could start your program like this:
1943		2181
1944	PERL_ANYEVENT_MODEL=Perl perl ...	2182	PERL_ANYEVENT_MODEL=Perl perl ...
…		…
1962	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>	2200	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>
1963	- only support IPv4, never try to resolve or contact IPv6	2201	- only support IPv4, never try to resolve or contact IPv6
1964	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or	2202	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or
1965	IPv6, but prefer IPv6 over IPv4.	2203	IPv6, but prefer IPv6 over IPv4.
1966		2204
		2205	=item C<PERL_ANYEVENT_HOSTS>
		2206
		2207	This variable, if specified, overrides the F</etc/hosts> file used by
		2208	L<AnyEvent::Socket>C<::resolve_sockaddr>, i.e. hosts aliases will be read
		2209	from that file instead.
		2210
1967	=item C<PERL_ANYEVENT_EDNS0>	2211	=item C<PERL_ANYEVENT_EDNS0>
1968		2212
1969	Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension	2213	Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension for
1970	for DNS. This extension is generally useful to reduce DNS traffic, but	2214	DNS. This extension is generally useful to reduce DNS traffic, especially
1971	some (broken) firewalls drop such DNS packets, which is why it is off by	2215	when DNSSEC is involved, but some (broken) firewalls drop such DNS
1972	default.	2216	packets, which is why it is off by default.
1973		2217
1974	Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce	2218	Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce
1975	EDNS0 in its DNS requests.	2219	EDNS0 in its DNS requests.
1976		2220
1977	=item C<PERL_ANYEVENT_MAX_FORKS>	2221	=item C<PERL_ANYEVENT_MAX_FORKS>
…		…
1985	resolver - this is the maximum number of parallel DNS requests that are	2229	resolver - this is the maximum number of parallel DNS requests that are
1986	sent to the DNS server.	2230	sent to the DNS server.
1987		2231
1988	=item C<PERL_ANYEVENT_RESOLV_CONF>	2232	=item C<PERL_ANYEVENT_RESOLV_CONF>
1989		2233
1990	The file to use instead of F</etc/resolv.conf> (or OS-specific	2234	The absolute path to a F<resolv.conf>-style file to use instead of
1991	configuration) in the default resolver. When set to the empty string, no	2235	F</etc/resolv.conf> (or the OS-specific configuration) in the default
1992	default config will be used.	2236	resolver, or the empty string to select the default configuration.
1993		2237
1994	=item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>.	2238	=item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>.
1995		2239
1996	When neither C<ca_file> nor C<ca_path> was specified during	2240	When neither C<ca_file> nor C<ca_path> was specified during
1997	L<AnyEvent::TLS> context creation, and either of these environment	2241	L<AnyEvent::TLS> context creation, and either of these environment
1998	variables exist, they will be used to specify CA certificate locations	2242	variables are nonempty, they will be used to specify CA certificate
1999	instead of a system-dependent default.	2243	locations instead of a system-dependent default.
2000		2244
2001	=item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT>	2245	=item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT>
2002		2246
2003	When these are set to C<1>, then the respective modules are not	2247	When these are set to C<1>, then the respective modules are not
2004	loaded. Mostly good for testing AnyEvent itself.	2248	loaded. Mostly good for testing AnyEvent itself.
…		…
2336	(even when used without AnyEvent), but most event loops have acceptable	2580	(even when used without AnyEvent), but most event loops have acceptable
2337	performance with or without AnyEvent.	2581	performance with or without AnyEvent.
2338		2582
2339	=item * The overhead AnyEvent adds is usually much smaller than the overhead of	2583	=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2340	the actual event loop, only with extremely fast event loops such as EV	2584	the actual event loop, only with extremely fast event loops such as EV
2341	adds AnyEvent significant overhead.	2585	does AnyEvent add significant overhead.
2342		2586
2343	=item * You should avoid POE like the plague if you want performance or	2587	=item * You should avoid POE like the plague if you want performance or
2344	reasonable memory usage.	2588	reasonable memory usage.
2345		2589
2346	=back	2590	=back
…		…
2721		2965
2722	Tutorial/Introduction: L<AnyEvent::Intro>.	2966	Tutorial/Introduction: L<AnyEvent::Intro>.
2723		2967
2724	FAQ: L<AnyEvent::FAQ>.	2968	FAQ: L<AnyEvent::FAQ>.
2725		2969
2726	Utility functions: L<AnyEvent::Util>.	2970	Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
		2971	(simply logging).
2727		2972
		2973	Development/Debugging: L<AnyEvent::Strict> (stricter checking),
		2974	L<AnyEvent::Debug> (interactive shell, watcher tracing).
		2975
2728	Event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>, L<Glib::EV>,	2976	Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
2729	L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>.	2977	L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
		2978	L<Qt>, L<POE>, L<FLTK>.
2730		2979
2731	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,	2980	Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2732	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,	2981	L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2733	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,	2982	L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2734	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>.	2983	L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
		2984	L<AnyEvent::Impl::FLTK>.
2735		2985
2736	Non-blocking file handles, sockets, TCP clients and	2986	Non-blocking handles, pipes, stream sockets, TCP clients and
2737	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.	2987	servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2738		2988
2739	Asynchronous DNS: L<AnyEvent::DNS>.	2989	Asynchronous DNS: L<AnyEvent::DNS>.
2740		2990
2741	Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.	2991	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 1.354 by root, Thu Aug 11 21:26:39 2011 UTC vs. Revision 1.386 by root, Mon Sep 26 11:32:19 2011 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.354 by root, Thu Aug 11 21:26:39 2011 UTC vs.
Revision 1.386 by root, Mon Sep 26 11:32:19 2011 UTC