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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.352 by root, Thu Aug 4 09:14:01 2011 UTC vs.
Revision 1.361 by root, Sun Aug 14 01:38:14 2011 UTC

…		…
878	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.	878	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
879	AnyEvent::Impl::POE based on POE, very slow, some limitations.	879	AnyEvent::Impl::POE based on POE, very slow, some limitations.
880	AnyEvent::Impl::Irssi used when running within irssi.	880	AnyEvent::Impl::Irssi used when running within irssi.
881	AnyEvent::Impl::IOAsync based on IO::Async.	881	AnyEvent::Impl::IOAsync based on IO::Async.
882	AnyEvent::Impl::Cocoa based on Cocoa::EventLoop.	882	AnyEvent::Impl::Cocoa based on Cocoa::EventLoop.
883	AnyEvent::Impl::FLTK based on FLTK.	883	AnyEvent::Impl::FLTK2 based on FLTK (fltk 2 binding).
884		884
885	=item Backends with special needs.	885	=item Backends with special needs.
886		886
887	Qt requires the Qt::Application to be instantiated first, but will	887	Qt requires the Qt::Application to be instantiated first, but will
888	otherwise be picked up automatically. As long as the main program	888	otherwise be picked up automatically. As long as the main program
…		…
933		933
934	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model	934	Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model
935	if necessary. You should only call this function right before you would	935	if necessary. You should only call this function right before you would
936	have created an AnyEvent watcher anyway, that is, as late as possible at	936	have created an AnyEvent watcher anyway, that is, as late as possible at
937	runtime, and not e.g. during initialisation of your module.	937	runtime, and not e.g. during initialisation of your module.
		938
		939	The effect of calling this function is as if a watcher had been created
		940	(specifically, actions that happen "when the first watcher is created"
		941	happen when calling detetc as well).
938		942
939	If you need to do some initialisation before AnyEvent watchers are	943	If you need to do some initialisation before AnyEvent watchers are
940	created, use C<post_detect>.	944	created, use C<post_detect>.
941		945
942	=item $guard = AnyEvent::post_detect { BLOCK }	946	=item $guard = AnyEvent::post_detect { BLOCK }
…		…
1005	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent	1009	# AnyEvent not yet initialised, so make sure to load Coro::AnyEvent
1006	# as soon as it is	1010	# as soon as it is
1007	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };	1011	push @AnyEvent::post_detect, sub { require Coro::AnyEvent };
1008	}	1012	}
1009		1013
		1014	=item AnyEvent::postpone { BLOCK }
		1015
		1016	Arranges for the block to be executed as soon as possible, but not before
		1017	the call itself returns. In practise, the block will be executed just
		1018	before the event loop polls for new events, or shortly afterwards.
		1019
		1020	This function never returns anything (to make the C<return postpone { ...
		1021	}> idiom more useful.
		1022
		1023	To understand the usefulness of this function, consider a function that
		1024	asynchronously does something for you and returns some transaction
		1025	object or guard to let you cancel the operation. For example,
		1026	C<AnyEvent::Socket::tcp_connect>:
		1027
		1028	# start a conenction attempt unless one is active
		1029	$self->{connect_guard} \|\|= AnyEvent::Socket::tcp_connect "www.example.net", 80, sub {
		1030	delete $self->{connect_guard};
		1031	...
		1032	};
		1033
		1034	Imagine that this function could instantly call the callback, for
		1035	example, because it detects an obvious error such as a negative port
		1036	number. Invoking the callback before the function returns causes problems
		1037	however: the callback will be called and will try to delete the guard
		1038	object. But since the function hasn't returned yet, there is nothing to
		1039	delete. When the function eventually returns it will assign the guard
		1040	object to C<< $self->{connect_guard} >>, where it will likely never be
		1041	deleted, so the program thinks it is still trying to connect.
		1042
		1043	This is where C<AnyEvent::postpone> should be used. Instead of calling the
		1044	callback directly on error:
		1045
		1046	$cb->(undef), return # signal error to callback, BAD!
		1047	if $some_error_condition;
		1048
		1049	It should use C<postpone>:
		1050
		1051	AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later
		1052	if $some_error_condition;
		1053
1010	=back	1054	=back
1011		1055
1012	=head1 WHAT TO DO IN A MODULE	1056	=head1 WHAT TO DO IN A MODULE
1013		1057
1014	As a module author, you should C<use AnyEvent> and call AnyEvent methods	1058	As a module author, you should C<use AnyEvent> and call AnyEvent methods
…		…
1162		1206
1163	BEGIN { AnyEvent::common_sense }	1207	BEGIN { AnyEvent::common_sense }
1164		1208
1165	use Carp ();	1209	use Carp ();
1166		1210
1167	our $VERSION = '5.34';	1211	our $VERSION = '6.01';
1168	our $MODEL;	1212	our $MODEL;
1169		1213
1170	our $AUTOLOAD;
1171	our @ISA;	1214	our @ISA;
1172		1215
1173	our @REGISTRY;	1216	our @REGISTRY;
1174		1217
1175	our $VERBOSE;	1218	our $VERBOSE;
…		…
1195	$PROTOCOL{$_} = ++$idx	1238	$PROTOCOL{$_} = ++$idx
1196	for reverse split /\s,\s/,	1239	for reverse split /\s,\s/,
1197	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1240	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1198	}	1241	}
1199		1242
		1243	our @post_detect;
		1244
		1245	sub post_detect(&) {
		1246	my ($cb) = @_;
		1247
		1248	push @post_detect, $cb;
		1249
		1250	defined wantarray
		1251	? bless \$cb, "AnyEvent::Util::postdetect"
		1252	: ()
		1253	}
		1254
		1255	sub AnyEvent::Util::postdetect::DESTROY {
		1256	@post_detect = grep $_ != ${$_[0]}, @post_detect;
		1257	}
		1258
		1259	our $POSTPONE_W;
		1260	our @POSTPONE;
		1261
		1262	sub _postpone_exec {
		1263	undef $POSTPONE_W;
		1264
		1265	&{ shift @POSTPONE }
		1266	while @POSTPONE;
		1267	}
		1268
		1269	sub postpone(&) {
		1270	push @POSTPONE, shift;
		1271
		1272	$POSTPONE_W \|\|= AE::timer (0, 0, \&_postpone_exec);
		1273
		1274	()
		1275	}
		1276
1200	my @models = (	1277	our @models = (
1201	[EV:: => AnyEvent::Impl::EV:: , 1],	1278	[EV:: => AnyEvent::Impl::EV:: , 1],
1202	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],	1279	[AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1203	# everything below here will not (normally) be autoprobed	1280	# everything below here will not (normally) be autoprobed
1204	# as the pure perl backend should work everywhere	1281	# as the pure perl backend should work everywhere
1205	# and is usually faster	1282	# and is usually faster
…		…
1210	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1287	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1211	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1288	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1212	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	1289	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1213	[Wx:: => AnyEvent::Impl::POE::],	1290	[Wx:: => AnyEvent::Impl::POE::],
1214	[Prima:: => AnyEvent::Impl::POE::],	1291	[Prima:: => AnyEvent::Impl::POE::],
1215	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::],	1292	[IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1216	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],	1293	[Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1217	[FLTK:: => AnyEvent::Impl::FLTK::],	1294	[FLTK:: => AnyEvent::Impl::FLTK2::],
1218	);	1295	);
1219		1296
1220	our %method = map +($_ => 1),	1297	our @isa_hook;
		1298
		1299	sub _isa_set {
		1300	my @pkg = ("AnyEvent", (grep defined, map $_->[0], @isa_hook), $MODEL);
		1301
		1302	@{"$pkg[$_-1]::ISA"} = $pkg[$_]
		1303	for 1 .. $#pkg;
		1304
		1305	grep $_->[1], @isa_hook
		1306	and AE::_reset ();
		1307	}
		1308
		1309	# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
		1310	sub _isa_hook($$;$) {
		1311	my ($i, $pkg, $reset_ae) = @_;
		1312
		1313	$isa_hook[$i] = [$pkg, $reset_ae];
		1314
		1315	_isa_set;
		1316	}
		1317
		1318	# all autoloaded methods reserve the complete glob, not just the method slot.
		1319	# due to bugs in perls method cache implementation.
1221	qw(io timer time now now_update signal child idle condvar DESTROY);	1320	our @methods = qw(io timer time now now_update signal child idle condvar);
1222
1223	our @post_detect;
1224
1225	sub post_detect(&) {
1226	my ($cb) = @_;
1227
1228	push @post_detect, $cb;
1229
1230	defined wantarray
1231	? bless \$cb, "AnyEvent::Util::postdetect"
1232	: ()
1233	}
1234
1235	sub AnyEvent::Util::postdetect::DESTROY {
1236	@post_detect = grep $_ != ${$_[0]}, @post_detect;
1237	}
1238		1321
1239	sub detect() {	1322	sub detect() {
		1323	local $!; # for good measure
		1324	local $SIG{__DIE__}; # we use eval
		1325
1240	# free some memory	1326	# free some memory
1241	*detect = sub () { $MODEL };	1327	*detect = sub () { $MODEL };
		1328	# undef &func doesn't correctly update the method cache. grmbl.
		1329	# so we delete the whole glob. grmbl.
		1330	# otoh, perl doesn't let me undef an active usb, but it lets me free
		1331	# a glob with an active sub. hrm. i hope it works, but perl is
		1332	# usually buggy in this department. sigh.
		1333	delete @{"AnyEvent::"}{@methods};
		1334	undef @methods;
1242		1335
1243	local $!; # for good measure
1244	local $SIG{__DIE__};
1245
1246	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) {	1336	if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1247	my $model = "AnyEvent::Impl::$1";	1337	my $model = $1;
		1338	$model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1248	if (eval "require $model") {	1339	if (eval "require $model") {
1249	$MODEL = $model;	1340	$MODEL = $model;
1250	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;	1341	warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2;
1251	} else {	1342	} else {
1252	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;	1343	warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE;
…		…
1285	$MODEL	1376	$MODEL
1286	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n";	1377	or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n";
1287	}	1378	}
1288	}	1379	}
1289		1380
1290	@models = (); # free probe data	1381	# free memory only needed for probing
		1382	undef @models;
		1383	undef @REGISTRY;
1291		1384
1292	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1385	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1293	unshift @ISA, $MODEL;
1294		1386
1295	# now nuke some methods that are overridden by the backend.	1387	# now nuke some methods that are overridden by the backend.
1296	# SUPER is not allowed.	1388	# SUPER usage is not allowed in these.
1297	for (qw(time signal child idle)) {	1389	for (qw(time signal child idle)) {
1298	undef &{"AnyEvent::Base::$_"}	1390	undef &{"AnyEvent::Base::$_"}
1299	if defined &{"$MODEL\::$_"};	1391	if defined &{"$MODEL\::$_"};
1300	}	1392	}
1301		1393
		1394	_isa_set;
		1395
1302	if ($ENV{PERL_ANYEVENT_STRICT}) {	1396	if ($ENV{PERL_ANYEVENT_STRICT}) {
1303	eval { require AnyEvent::Strict };	1397	require AnyEvent::Strict;
1304	warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1305	if $@ && $VERBOSE;
1306	}	1398	}
1307		1399
		1400	if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
		1401	require AnyEvent::Debug;
		1402	AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
		1403	}
		1404
		1405	if (exists $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
		1406	require AnyEvent::Socket;
		1407	require AnyEvent::Debug;
		1408
		1409	my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
		1410	$shell =~ s/\$\$/$$/g;
		1411
		1412	my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
		1413	$AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
		1414	}
		1415
1308	(shift @post_detect)->() while @post_detect;	1416	(shift @post_detect)->() while @post_detect;
		1417	undef @post_detect;
1309		1418
1310	*post_detect = sub(&) {	1419	*post_detect = sub(&) {
1311	shift->();	1420	shift->();
1312		1421
1313	undef	1422	undef
1314	};	1423	};
1315		1424
1316	$MODEL	1425	$MODEL
1317	}	1426	}
1318		1427
1319	sub AUTOLOAD {	1428	for my $name (@methods) {
1320	(my $func = $AUTOLOAD) =~ s/.*://;	1429	*$name = sub {
1321
1322	$method{$func}
1323	or Carp::croak "$func: not a valid AnyEvent class method";
1324
1325	detect;	1430	detect;
1326		1431	# we use goto because
1327	my $class = shift;	1432	# a) it makes the thunk more transparent
1328	$class->$func (@_);	1433	# b) it allows us to delete the thunk later
		1434	goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
		1435	};
1329	}	1436	}
1330		1437
1331	# utility function to dup a filehandle. this is used by many backends	1438	# utility function to dup a filehandle. this is used by many backends
1332	# to support binding more than one watcher per filehandle (they usually	1439	# to support binding more than one watcher per filehandle (they usually
1333	# allow only one watcher per fd, so we dup it to get a different one).	1440	# allow only one watcher per fd, so we dup it to get a different one).
…		…
1357		1464
1358	package AE;	1465	package AE;
1359		1466
1360	our $VERSION = $AnyEvent::VERSION;	1467	our $VERSION = $AnyEvent::VERSION;
1361		1468
		1469	sub _reset() {
		1470	eval q{
1362	# fall back to the main API by default - backends and AnyEvent::Base	1471	# fall back to the main API by default - backends and AnyEvent::Base
1363	# implementations can overwrite these.	1472	# implementations can overwrite these.
1364		1473
1365	sub io($$$) {	1474	sub io($$$) {
1366	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])	1475	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1367	}	1476	}
1368		1477
1369	sub timer($$$) {	1478	sub timer($$$) {
1370	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])	1479	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1371	}	1480	}
1372		1481
1373	sub signal($$) {	1482	sub signal($$) {
1374	AnyEvent->signal (signal => $_[0], cb => $_[1])	1483	AnyEvent->signal (signal => $_[0], cb => $_[1])
1375	}	1484	}
1376		1485
1377	sub child($$) {	1486	sub child($$) {
1378	AnyEvent->child (pid => $_[0], cb => $_[1])	1487	AnyEvent->child (pid => $_[0], cb => $_[1])
1379	}	1488	}
1380		1489
1381	sub idle($) {	1490	sub idle($) {
1382	AnyEvent->idle (cb => $_[0])	1491	AnyEvent->idle (cb => $_[0]);
1383	}	1492	}
1384		1493
1385	sub cv(;&) {	1494	sub cv(;&) {
1386	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())	1495	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1387	}	1496	}
1388		1497
1389	sub now() {	1498	sub now() {
1390	AnyEvent->now	1499	AnyEvent->now
1391	}	1500	}
1392		1501
1393	sub now_update() {	1502	sub now_update() {
1394	AnyEvent->now_update	1503	AnyEvent->now_update
1395	}	1504	}
1396		1505
1397	sub time() {	1506	sub time() {
1398	AnyEvent->time	1507	AnyEvent->time
		1508	}
		1509
		1510	*postpone = \&AnyEvent::postpone;
		1511	};
		1512	die if $@;
1399	}	1513	}
		1514
		1515	BEGIN { _reset }
1400		1516
1401	package AnyEvent::Base;	1517	package AnyEvent::Base;
1402		1518
1403	# default implementations for many methods	1519	# default implementations for many methods
1404		1520
1405	sub time {	1521	sub time {
1406	eval q{ # poor man's autoloading {}	1522	eval q{ # poor man's autoloading {}
1407	# probe for availability of Time::HiRes	1523	# probe for availability of Time::HiRes
1408	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {	1524	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1409	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;	1525	warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8;
		1526	*time = sub { Time::HiRes::time () };
1410	*AE::time = \&Time::HiRes::time;	1527	*AE::time = \& Time::HiRes::time ;
1411	# if (eval "use POSIX (); (POSIX::times())...	1528	# if (eval "use POSIX (); (POSIX::times())...
1412	} else {	1529	} else {
1413	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;	1530	warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE;
		1531	*time = sub { CORE::time };
1414	*AE::time = sub (){ time }; # epic fail	1532	*AE::time = sub (){ CORE::time };
1415	}	1533	}
1416		1534
1417	*time = sub { AE::time }; # different prototypes	1535	*now = \&time;
1418	};	1536	};
1419	die if $@;	1537	die if $@;
1420		1538
1421	&time	1539	&time
1422	}	1540	}
1423		1541
1424	*now = \&time;	1542	*now = \&time;
1425
1426	sub now_update { }	1543	sub now_update { }
1427		1544
1428	sub _poll {	1545	sub _poll {
1429	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";	1546	Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
1430	}	1547	}
1431		1548
1432	# default implementation for ->condvar	1549	# default implementation for ->condvar
1433	# in fact,t he default should not be overwritten	1550	# in fact, the default should not be overwritten
1434		1551
1435	sub condvar {	1552	sub condvar {
1436	eval q{ # poor man's autoloading {}	1553	eval q{ # poor man's autoloading {}
1437	*condvar = sub {	1554	*condvar = sub {
1438	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"	1555	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
…		…
1608	: sysread $SIGPIPE_R, (my $dummy), 9;	1725	: sysread $SIGPIPE_R, (my $dummy), 9;
1609		1726
1610	while (%SIG_EV) {	1727	while (%SIG_EV) {
1611	for (keys %SIG_EV) {	1728	for (keys %SIG_EV) {
1612	delete $SIG_EV{$_};	1729	delete $SIG_EV{$_};
1613	$_->() for values %{ $SIG_CB{$_} \|\| {} };	1730	&$_ for values %{ $SIG_CB{$_} \|\| {} };
1614	}	1731	}
1615	}	1732	}
1616	};	1733	};
1617	};	1734	};
1618	die if $@;	1735	die if $@;
…		…
1685		1802
1686	my ($cb, $w, $rcb) = $arg{cb};	1803	my ($cb, $w, $rcb) = $arg{cb};
1687		1804
1688	$rcb = sub {	1805	$rcb = sub {
1689	if ($cb) {	1806	if ($cb) {
1690	$w = _time;	1807	$w = AE::time;
1691	&$cb;	1808	&$cb;
1692	$w = _time - $w;	1809	$w = AE::time - $w;
1693		1810
1694	# never use more then 50% of the time for the idle watcher,	1811	# never use more then 50% of the time for the idle watcher,
1695	# within some limits	1812	# within some limits
1696	$w = 0.0001 if $w < 0.0001;	1813	$w = 0.0001 if $w < 0.0001;
1697	$w = 5 if $w > 5;	1814	$w = 5 if $w > 5;
…		…
1866	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>	1983	Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1867	>>, it is definitely recommended to keep it off in production. Keeping	1984	>>, it is definitely recommended to keep it off in production. Keeping
1868	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs	1985	C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1869	can be very useful, however.	1986	can be very useful, however.
1870		1987
		1988	=item C<PERL_ANYEVENT_DEBUG_SHELL>
		1989
		1990	If this env variable is set, then its contents will be interpreted by
		1991	C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of
		1992	C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on
		1993	that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>.
		1994
		1995	This takes place when the first watcher is created.
		1996
		1997	For example, to bind a debug shell on a unix domain socket in
		1998	F<< /tmp/debug<pid>.sock >>, you could use this:
		1999
		2000	PERL_ANYEVENT_DEBUG_SHELL=unix/:/tmp/debug\$\$.sock perlprog
		2001
		2002	Note that creating sockets in F</tmp> is very unsafe on multiuser
		2003	systems.
		2004
		2005	=item C<PERL_ANYEVENT_DEBUG_WRAP>
		2006
		2007	Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
		2008	debugging purposes. See C<AnyEvent::Debug::wrap> for details.
		2009
1871	=item C<PERL_ANYEVENT_MODEL>	2010	=item C<PERL_ANYEVENT_MODEL>
1872		2011
1873	This can be used to specify the event model to be used by AnyEvent, before	2012	This can be used to specify the event model to be used by AnyEvent, before
1874	auto detection and -probing kicks in. It must be a string consisting	2013	auto detection and -probing kicks in.
1875	entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended	2014
		2015	It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
		2016	or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1876	and the resulting module name is loaded and if the load was successful,	2017	resulting module name is loaded and - if the load was successful - used as
1877	used as event model. If it fails to load AnyEvent will proceed with	2018	event model backend. If it fails to load then AnyEvent will proceed with
1878	auto detection and -probing.	2019	auto detection and -probing.
1879		2020
1880	This functionality might change in future versions.	2021	If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
		2022	nothing gets prepended and the module name is used as-is (hint: C<::> at
		2023	the end of a string designates a module name and quotes it appropriately).
1881		2024
1882	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you	2025	For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1883	could start your program like this:	2026	could start your program like this:
1884		2027
1885	PERL_ANYEVENT_MODEL=Perl perl ...	2028	PERL_ANYEVENT_MODEL=Perl perl ...

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Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.352 by root, Thu Aug 4 09:14:01 2011 UTC vs. Revision 1.361 by root, Sun Aug 14 01:38:14 2011 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.352 by root, Thu Aug 4 09:14:01 2011 UTC vs.
Revision 1.361 by root, Sun Aug 14 01:38:14 2011 UTC