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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.262 by root, Tue Jul 28 13:08:17 2009 UTC vs.
Revision 1.276 by root, Sun Aug 9 10:53:33 2009 UTC

…		…
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
		422
		423	$w = AnyEvent->child (pid => <process id>, cb => <callback>);
402		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 (one some backends,	427	The child process is specified by the C<pid> argument (one some backends,
406	using C<0> watches for any child process exit, on others this will	428	using C<0> watches for any child process exit, on others this will
…		…
455	# do something else, then wait for process exit	477	# do something else, then wait for process exit
456	$done->recv;	478	$done->recv;
457		479
458	=head2 IDLE WATCHERS	480	=head2 IDLE WATCHERS
459		481
		482	$w = AnyEvent->idle (cb => <callback>);
		483
460	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
461	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
462	"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
463	attention by the event loop".	487	attention by the event loop".
464		488
…		…
490	});	514	});
491	});	515	});
492		516
493	=head2 CONDITION VARIABLES	517	=head2 CONDITION VARIABLES
494		518
		519	$cv = AnyEvent->condvar;
		520
		521	$cv->send (<list>);
		522	my @res = $cv->recv;
		523
495	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
496	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
497	will actively watch for new events and call your callbacks.	526	will actively watch for new events and call your callbacks.
498		527
499	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
…		…
761	=item $cb = $cv->cb ($cb->($cv))	790	=item $cb = $cv->cb ($cb->($cv))
762		791
763	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
764	replaces it before doing so.	793	replaces it before doing so.
765		794
766	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)
767	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
768	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>
769	is guaranteed not to block.	798	inside the callback or at any later time is guaranteed not to block.
770		799
771	=back	800	=back
772		801
773	=head1 SUPPORTED EVENT LOOPS/BACKENDS	802	=head1 SUPPORTED EVENT LOOPS/BACKENDS
774		803
…		…
777	=over 4	806	=over 4
778		807
779	=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.
780		809
781	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
782	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
783	that, will fall back to its own pure-perl implementation, which is	812	pure-perl implementation, which is available everywhere as it comes with
784	available everywhere as it comes with AnyEvent itself.	813	AnyEvent itself.
785		814
786	AnyEvent::Impl::EV based on EV (interface to libev, best choice).	815	AnyEvent::Impl::EV based on EV (interface to libev, best choice).
787	AnyEvent::Impl::Event based on Event, very stable, few glitches.
788	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.	816	AnyEvent::Impl::Perl pure-perl implementation, fast and portable.
789		817
790	=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.
791		819
792	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
793	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
794	them. This means that AnyEvent will automatically pick the right backend	822	them. This means that AnyEvent will automatically pick the right backend
795	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
796	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.
797		825
		826	AnyEvent::Impl::Event based on Event, very stable, few glitches.
798	AnyEvent::Impl::Glib based on Glib, slow but very stable.	827	AnyEvent::Impl::Glib based on Glib, slow but very stable.
799	AnyEvent::Impl::Tk based on Tk, very broken.	828	AnyEvent::Impl::Tk based on Tk, very broken.
800	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.	829	AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse.
801	AnyEvent::Impl::POE based on POE, very slow, some limitations.	830	AnyEvent::Impl::POE based on POE, very slow, some limitations.
802	AnyEvent::Impl::Irssi used when running within irssi.	831	AnyEvent::Impl::Irssi used when running within irssi.
…		…
1086		1115
1087	BEGIN { AnyEvent::common_sense }	1116	BEGIN { AnyEvent::common_sense }
1088		1117
1089	use Carp ();	1118	use Carp ();
1090		1119
1091	our $VERSION = 4.881;	1120	our $VERSION = 4.92;
1092	our $MODEL;	1121	our $MODEL;
1093		1122
1094	our $AUTOLOAD;	1123	our $AUTOLOAD;
1095	our @ISA;	1124	our @ISA;
1096		1125
…		…
1122	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";	1151	$ENV{PERL_ANYEVENT_PROTOCOLS} \|\| "ipv4,ipv6";
1123	}	1152	}
1124		1153
1125	my @models = (	1154	my @models = (
1126	[EV:: => AnyEvent::Impl::EV:: , 1],	1155	[EV:: => AnyEvent::Impl::EV:: , 1],
1127	[Event:: => AnyEvent::Impl::Event::, 1],
1128	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],	1156	[AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1],
1129	# everything below here will not (normally) be autoprobed	1157	# everything below here will not (normally) be autoprobed
1130	# as the pureperl backend should work everywhere	1158	# as the pureperl backend should work everywhere
1131	# and is usually faster	1159	# and is usually faster
		1160	[Event:: => AnyEvent::Impl::Event::, 1],
1132	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers	1161	[Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers
1133	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy	1162	[Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy
1134	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package	1163	[Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package
1135	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles	1164	[Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1136	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program	1165	[Qt:: => AnyEvent::Impl::Qt::], # requires special main program
…		…
1258	# we assume CLOEXEC is already set by perl in all important cases	1287	# we assume CLOEXEC is already set by perl in all important cases
1259		1288
1260	($fh2, $rw)	1289	($fh2, $rw)
1261	}	1290	}
1262		1291
		1292	#############################################################################
		1293	# "new" API, currently only emulation of it
		1294	#############################################################################
		1295
		1296	package AE;
		1297
		1298	our $VERSION = $AnyEvent::VERSION;
		1299
		1300	sub io($$$) {
		1301	AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
		1302	}
		1303
		1304	sub timer($$$) {
		1305	AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]);
		1306	}
		1307
		1308	sub signal($$) {
		1309	AnyEvent->signal (signal => $_[0], cb => $_[1]);
		1310	}
		1311
		1312	sub child($$) {
		1313	AnyEvent->child (pid => $_[0], cb => $_[1]);
		1314	}
		1315
		1316	sub idle($) {
		1317	AnyEvent->idle (cb => $_[0]);
		1318	}
		1319
		1320	sub cv(;&) {
		1321	AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
		1322	}
		1323
		1324	sub now() {
		1325	AnyEvent->now
		1326	}
		1327
		1328	sub now_update() {
		1329	AnyEvent->now_update
		1330	}
		1331
		1332	sub time() {
		1333	AnyEvent->time
		1334	}
		1335
1263	package AnyEvent::Base;	1336	package AnyEvent::Base;
1264		1337
1265	# default implementations for many methods	1338	# default implementations for many methods
1266		1339
1267	sub _time {	1340	sub _time {
…		…
1289	}	1362	}
1290		1363
1291	# default implementation for ->signal	1364	# default implementation for ->signal
1292		1365
1293	our $HAVE_ASYNC_INTERRUPT;	1366	our $HAVE_ASYNC_INTERRUPT;
		1367
		1368	sub _have_async_interrupt() {
		1369	$HAVE_ASYNC_INTERRUPT = 1*(!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT}
		1370	&& eval "use Async::Interrupt 1.0 (); 1")
		1371	unless defined $HAVE_ASYNC_INTERRUPT;
		1372
		1373	$HAVE_ASYNC_INTERRUPT
		1374	}
		1375
1294	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);	1376	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);
1295	our (%SIG_ASY, %SIG_ASY_W);	1377	our (%SIG_ASY, %SIG_ASY_W);
1296	our ($SIG_COUNT, $SIG_TW);	1378	our ($SIG_COUNT, $SIG_TW);
1297		1379
1298	sub _signal_exec {	1380	sub _signal_exec {
…		…
1310		1392
1311	# install a dummy wakeup watcher to reduce signal catching latency	1393	# install a dummy wakeup watcher to reduce signal catching latency
1312	sub _sig_add() {	1394	sub _sig_add() {
1313	unless ($SIG_COUNT++) {	1395	unless ($SIG_COUNT++) {
1314	# try to align timer on a full-second boundary, if possible	1396	# try to align timer on a full-second boundary, if possible
1315	my $NOW = AnyEvent->now;	1397	my $NOW = AE::now;
1316		1398
1317	$SIG_TW = AnyEvent->timer (	1399	$SIG_TW = AE::timer
1318	after => $MAX_SIGNAL_LATENCY - ($NOW - int $NOW),	1400	$MAX_SIGNAL_LATENCY - ($NOW - int $NOW),
1319	interval => $MAX_SIGNAL_LATENCY,	1401	$MAX_SIGNAL_LATENCY,
1320	cb => sub { }, # just for the PERL_ASYNC_CHECK	1402	sub { } # just for the PERL_ASYNC_CHECK
1321	);	1403	;
1322	}	1404	}
1323	}	1405	}
1324		1406
1325	sub _sig_del {	1407	sub _sig_del {
1326	undef $SIG_TW	1408	undef $SIG_TW
1327	unless --$SIG_COUNT;	1409	unless --$SIG_COUNT;
1328	}	1410	}
1329		1411
		1412	our $_sig_name_init; $_sig_name_init = sub {
		1413	eval q{ # poor man's autoloading
		1414	undef $_sig_name_init;
		1415
		1416	if (_have_async_interrupt) {
		1417	*sig2num = \&Async::Interrupt::sig2num;
		1418	*sig2name = \&Async::Interrupt::sig2name;
		1419	} else {
		1420	require Config;
		1421
		1422	my %signame2num;
		1423	@signame2num{ split ' ', $Config::Config{sig_name} }
		1424	= split ' ', $Config::Config{sig_num};
		1425
		1426	my @signum2name;
		1427	@signum2name[values %signame2num] = keys %signame2num;
		1428
		1429	*sig2num = sub($) {
		1430	$_[0] > 0 ? shift : $signame2num{+shift}
		1431	};
		1432	*sig2name = sub ($) {
		1433	$_[0] > 0 ? $signum2name[+shift] : shift
		1434	};
		1435	}
		1436	};
		1437	die if $@;
		1438	};
		1439
		1440	sub sig2num ($) { &$_sig_name_init; &sig2num }
		1441	sub sig2name($) { &$_sig_name_init; &sig2name }
		1442
1330	sub _signal {	1443	sub signal {
		1444	eval q{ # poor man's autoloading {}
		1445	# probe for availability of Async::Interrupt
		1446	if (_have_async_interrupt) {
		1447	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;
		1448
		1449	$SIGPIPE_R = new Async::Interrupt::EventPipe;
		1450	$SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
		1451
		1452	} else {
		1453	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;
		1454
		1455	require Fcntl;
		1456
		1457	if (AnyEvent::WIN32) {
		1458	require AnyEvent::Util;
		1459
		1460	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
		1461	AnyEvent::Util::fh_nonblocking ($SIGPIPE_R, 1) if $SIGPIPE_R;
		1462	AnyEvent::Util::fh_nonblocking ($SIGPIPE_W, 1) if $SIGPIPE_W; # just in case
		1463	} else {
		1464	pipe $SIGPIPE_R, $SIGPIPE_W;
		1465	fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R;
		1466	fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case
		1467
		1468	# not strictly required, as $^F is normally 2, but let's make sure...
		1469	fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
		1470	fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
		1471	}
		1472
		1473	$SIGPIPE_R
		1474	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
		1475
		1476	$SIG_IO = AE::io $SIGPIPE_R, 0, \&_signal_exec;
		1477	}
		1478
		1479	*signal = sub {
1331	my (undef, %arg) = @_;	1480	my (undef, %arg) = @_;
1332		1481
1333	my $signal = uc $arg{signal}	1482	my $signal = uc $arg{signal}
1334	or Carp::croak "required option 'signal' is missing";	1483	or Carp::croak "required option 'signal' is missing";
1335		1484
1336	if ($HAVE_ASYNC_INTERRUPT) {	1485	if ($HAVE_ASYNC_INTERRUPT) {
1337	# async::interrupt	1486	# async::interrupt
1338		1487
1339	$signal = Async::Interrupt::sig2num ($signal);	1488	$signal = sig2num $signal;
1340	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};	1489	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
1341		1490
1342	$SIG_ASY{$signal} \|\|= new Async::Interrupt	1491	$SIG_ASY{$signal} \|\|= new Async::Interrupt
1343	cb => sub { undef $SIG_EV{$signal} },	1492	cb => sub { undef $SIG_EV{$signal} },
1344	signal => $signal,	1493	signal => $signal,
1345	pipe => [$SIGPIPE_R->filenos],	1494	pipe => [$SIGPIPE_R->filenos],
1346	pipe_autodrain => 0,	1495	pipe_autodrain => 0,
1347	;	1496	;
1348		1497
1349	} else {	1498	} else {
1350	# pure perl	1499	# pure perl
1351		1500
1352	# AE::Util has been loaded in signal	1501	# AE::Util has been loaded in signal
1353	$signal = AnyEvent::Util::sig2name ($signal);	1502	$signal = sig2name $signal;
1354	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};	1503	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
1355		1504
1356	$SIG{$signal} \|\|= sub {	1505	$SIG{$signal} \|\|= sub {
1357	local $!;	1506	local $!;
1358	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;	1507	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;
1359	undef $SIG_EV{$signal};	1508	undef $SIG_EV{$signal};
		1509	};
		1510
		1511	# can't do signal processing without introducing races in pure perl,
		1512	# so limit the signal latency.
		1513	_sig_add;
		1514	}
		1515
		1516	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"
1360	};	1517	};
1361		1518
1362	# can't do signal processing without introducing races in pure perl,	1519	*AnyEvent::Base::signal::DESTROY = sub {
1363	# so limit the signal latency.	1520	my ($signal, $cb) = @{$_[0]};
		1521
1364	_sig_add;	1522	_sig_del;
1365	}
1366		1523
1367	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"	1524	delete $SIG_CB{$signal}{$cb};
1368	}
1369		1525
1370	sub signal {
1371	# probe for availability of Async::Interrupt
1372	if (!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} && eval "use Async::Interrupt 1.0 (); 1") {
1373	warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8;
1374
1375	$HAVE_ASYNC_INTERRUPT = 1;	1526	$HAVE_ASYNC_INTERRUPT
1376	$SIGPIPE_R = new Async::Interrupt::EventPipe;	1527	? delete $SIG_ASY{$signal}
1377	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec);	1528	: # delete doesn't work with older perls - they then
1378		1529	# print weird messages, or just unconditionally exit
1379	} else {	1530	# instead of getting the default action.
1380	warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8;	1531	undef $SIG{$signal}
1381		1532	unless keys %{ $SIG_CB{$signal} };
1382	require Fcntl;
1383
1384	if (AnyEvent::WIN32) {
1385	require AnyEvent::Util;
1386
1387	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
1388	AnyEvent::Util::fh_nonblocking ($SIGPIPE_R) if $SIGPIPE_R;
1389	AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) if $SIGPIPE_W; # just in case
1390	} else {
1391	pipe $SIGPIPE_R, $SIGPIPE_W;
1392	fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R;
1393	fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case
1394
1395	# not strictly required, as $^F is normally 2, but let's make sure...
1396	fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
1397	fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
1398	}	1533	};
1399
1400	$SIGPIPE_R
1401	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
1402
1403	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec);
1404	}	1534	};
1405		1535	die if $@;
1406	*signal = \&_signal;
1407	&signal	1536	&signal
1408	}
1409
1410	sub AnyEvent::Base::signal::DESTROY {
1411	my ($signal, $cb) = @{$_[0]};
1412
1413	_sig_del;
1414
1415	delete $SIG_CB{$signal}{$cb};
1416
1417	$HAVE_ASYNC_INTERRUPT
1418	? delete $SIG_ASY{$signal}
1419	: # delete doesn't work with older perls - they then
1420	# print weird messages, or just unconditionally exit
1421	# instead of getting the default action.
1422	undef $SIG{$signal}
1423	unless keys %{ $SIG_CB{$signal} };
1424	}	1537	}
1425		1538
1426	# default implementation for ->child	1539	# default implementation for ->child
1427		1540
1428	our %PID_CB;	1541	our %PID_CB;
…		…
1457	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/	1570	$WNOHANG \|\|= $^O =~ /^(?:openbsd\|netbsd\|linux\|freebsd\|cygwin\|MSWin32)$/
1458	? 1	1571	? 1
1459	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;	1572	: eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } \|\| 1;
1460		1573
1461	unless ($CHLD_W) {	1574	unless ($CHLD_W) {
1462	$CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld);	1575	$CHLD_W = AE::signal CHLD => \&_sigchld;
1463	# child could be a zombie already, so make at least one round	1576	# child could be a zombie already, so make at least one round
1464	&_sigchld;	1577	&_sigchld;
1465	}	1578	}
1466		1579
1467	bless [$pid, $arg{cb}], "AnyEvent::Base::child"	1580	bless [$pid, $arg{cb}], "AnyEvent::Base::child"
…		…
1493	# never use more then 50% of the time for the idle watcher,	1606	# never use more then 50% of the time for the idle watcher,
1494	# within some limits	1607	# within some limits
1495	$w = 0.0001 if $w < 0.0001;	1608	$w = 0.0001 if $w < 0.0001;
1496	$w = 5 if $w > 5;	1609	$w = 5 if $w > 5;
1497		1610
1498	$w = AnyEvent->timer (after => $w, cb => $rcb);	1611	$w = AE::timer $w, 0, $rcb;
1499	} else {	1612	} else {
1500	# clean up...	1613	# clean up...
1501	undef $w;	1614	undef $w;
1502	undef $rcb;	1615	undef $rcb;
1503	}	1616	}
1504	};	1617	};
1505		1618
1506	$w = AnyEvent->timer (after => 0.05, cb => $rcb);	1619	$w = AE::timer 0.05, 0, $rcb;
1507		1620
1508	bless \\$cb, "AnyEvent::Base::idle"	1621	bless \\$cb, "AnyEvent::Base::idle"
1509	}	1622	}
1510		1623
1511	sub AnyEvent::Base::idle::DESTROY {	1624	sub AnyEvent::Base::idle::DESTROY {
…		…
1565	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};	1678	Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak};
1566	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]	1679	wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0]
1567	}	1680	}
1568		1681
1569	sub cb {	1682	sub cb {
1570	$_[0]{_ae_cb} = $_[1] if @_ > 1;	1683	my $cv = shift;
		1684
		1685	@_
		1686	and $cv->{_ae_cb} = shift
		1687	and $cv->{_ae_sent}
		1688	and (delete $cv->{_ae_cb})->($cv);
		1689
1571	$_[0]{_ae_cb}	1690	$cv->{_ae_cb}
1572	}	1691	}
1573		1692
1574	sub begin {	1693	sub begin {
1575	++$_[0]{_ae_counter};	1694	++$_[0]{_ae_counter};
1576	$_[0]{_ae_end_cb} = $_[1] if @_ > 1;	1695	$_[0]{_ae_end_cb} = $_[1] if @_ > 1;

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Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.262 by root, Tue Jul 28 13:08:17 2009 UTC vs. Revision 1.276 by root, Sun Aug 9 10:53:33 2009 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.262 by root, Tue Jul 28 13:08:17 2009 UTC vs.
Revision 1.276 by root, Sun Aug 9 10:53:33 2009 UTC