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

Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.180 by root, Sat Sep 6 07:00:45 2008 UTC vs.
Revision 1.207 by root, Thu Apr 23 22:44:30 2009 UTC

…		…
6		6
7	=head1 SYNOPSIS	7	=head1 SYNOPSIS
8		8
9	use AnyEvent;	9	use AnyEvent;
10		10
		11	# file descriptor readable
11	my $w = AnyEvent->io (fh => $fh, poll => "r\|w", cb => sub { ... });	12	my $w = AnyEvent->io (fh => $fh, poll => "r", cb => sub { ... });
12		13
		14	# one-shot or repeating timers
13	my $w = AnyEvent->timer (after => $seconds, cb => sub { ... });	15	my $w = AnyEvent->timer (after => $seconds, cb => sub { ... });
14	my $w = AnyEvent->timer (after => $seconds, interval => $seconds, cb => ...	16	my $w = AnyEvent->timer (after => $seconds, interval => $seconds, cb => ...
15		17
16	print AnyEvent->now; # prints current event loop time	18	print AnyEvent->now; # prints current event loop time
17	print AnyEvent->time; # think Time::HiRes::time or simply CORE::time.	19	print AnyEvent->time; # think Time::HiRes::time or simply CORE::time.
18		20
		21	# POSIX signal
19	my $w = AnyEvent->signal (signal => "TERM", cb => sub { ... });	22	my $w = AnyEvent->signal (signal => "TERM", cb => sub { ... });
20		23
		24	# child process exit
21	my $w = AnyEvent->child (pid => $pid, cb => sub {	25	my $w = AnyEvent->child (pid => $pid, cb => sub {
22	my ($pid, $status) = @_;	26	my ($pid, $status) = @_;
23	...	27	...
24	});	28	});
		29
		30	# called when event loop idle (if applicable)
		31	my $w = AnyEvent->idle (cb => sub { ... });
25		32
26	my $w = AnyEvent->condvar; # stores whether a condition was flagged	33	my $w = AnyEvent->condvar; # stores whether a condition was flagged
27	$w->send; # wake up current and all future recv's	34	$w->send; # wake up current and all future recv's
28	$w->recv; # enters "main loop" till $condvar gets ->send	35	$w->recv; # enters "main loop" till $condvar gets ->send
29	# use a condvar in callback mode:	36	# use a condvar in callback mode:
…		…
137	These watchers are normal Perl objects with normal Perl lifetime. After	144	These watchers are normal Perl objects with normal Perl lifetime. After
138	creating a watcher it will immediately "watch" for events and invoke the	145	creating a watcher it will immediately "watch" for events and invoke the
139	callback when the event occurs (of course, only when the event model	146	callback when the event occurs (of course, only when the event model
140	is in control).	147	is in control).
141		148
		149	Note that B<callbacks must not permanently change global variables>
		150	potentially in use by the event loop (such as C<$_> or C<$[>) and that B<<
		151	callbacks must not C<die> >>. The former is good programming practise in
		152	Perl and the latter stems from the fact that exception handling differs
		153	widely between event loops.
		154
142	To disable the watcher you have to destroy it (e.g. by setting the	155	To disable the watcher you have to destroy it (e.g. by setting the
143	variable you store it in to C<undef> or otherwise deleting all references	156	variable you store it in to C<undef> or otherwise deleting all references
144	to it).	157	to it).
145		158
146	All watchers are created by calling a method on the C<AnyEvent> class.	159	All watchers are created by calling a method on the C<AnyEvent> class.
…		…
162	=head2 I/O WATCHERS	175	=head2 I/O WATCHERS
163		176
164	You can create an I/O watcher by calling the C<< AnyEvent->io >> method	177	You can create an I/O watcher by calling the C<< AnyEvent->io >> method
165	with the following mandatory key-value pairs as arguments:	178	with the following mandatory key-value pairs as arguments:
166		179
167	C<fh> the Perl I<file handle> (I<not> file descriptor) to watch for events	180	C<fh> is the Perl I<file handle> (I<not> file descriptor) to watch
168	(AnyEvent might or might not keep a reference to this file handle). C<poll>	181	for events (AnyEvent might or might not keep a reference to this file
		182	handle). Note that only file handles pointing to things for which
		183	non-blocking operation makes sense are allowed. This includes sockets,
		184	most character devices, pipes, fifos and so on, but not for example files
		185	or block devices.
		186
169	must be a string that is either C<r> or C<w>, which creates a watcher	187	C<poll> must be a string that is either C<r> or C<w>, which creates a
170	waiting for "r"eadable or "w"ritable events, respectively. C<cb> is the	188	watcher waiting for "r"eadable or "w"ritable events, respectively.
		189
171	callback to invoke each time the file handle becomes ready.	190	C<cb> is the callback to invoke each time the file handle becomes ready.
172		191
173	Although the callback might get passed parameters, their value and	192	Although the callback might get passed parameters, their value and
174	presence is undefined and you cannot rely on them. Portable AnyEvent	193	presence is undefined and you cannot rely on them. Portable AnyEvent
175	callbacks cannot use arguments passed to I/O watcher callbacks.	194	callbacks cannot use arguments passed to I/O watcher callbacks.
176		195
…		…
308	In either case, if you care (and in most cases, you don't), then you	327	In either case, if you care (and in most cases, you don't), then you
309	can get whatever behaviour you want with any event loop, by taking the	328	can get whatever behaviour you want with any event loop, by taking the
310	difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into	329	difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into
311	account.	330	account.
312		331
		332	=item AnyEvent->now_update
		333
		334	Some event loops (such as L<EV> or L<AnyEvent::Impl::Perl>) cache
		335	the current time for each loop iteration (see the discussion of L<<
		336	AnyEvent->now >>, above).
		337
		338	When a callback runs for a long time (or when the process sleeps), then
		339	this "current" time will differ substantially from the real time, which
		340	might affect timers and time-outs.
		341
		342	When this is the case, you can call this method, which will update the
		343	event loop's idea of "current time".
		344
		345	Note that updating the time I<might> cause some events to be handled.
		346
313	=back	347	=back
314		348
315	=head2 SIGNAL WATCHERS	349	=head2 SIGNAL WATCHERS
316		350
317	You can watch for signals using a signal watcher, C<signal> is the signal	351	You can watch for signals using a signal watcher, C<signal> is the signal
…		…
340	=head2 CHILD PROCESS WATCHERS	374	=head2 CHILD PROCESS WATCHERS
341		375
342	You can also watch on a child process exit and catch its exit status.	376	You can also watch on a child process exit and catch its exit status.
343		377
344	The child process is specified by the C<pid> argument (if set to C<0>, it	378	The child process is specified by the C<pid> argument (if set to C<0>, it
345	watches for any child process exit). The watcher will trigger as often	379	watches for any child process exit). The watcher will triggered only when
346	as status change for the child are received. This works by installing a	380	the child process has finished and an exit status is available, not on
347	signal handler for C<SIGCHLD>. The callback will be called with the pid	381	any trace events (stopped/continued).
348	and exit status (as returned by waitpid), so unlike other watcher types,	382
349	you I<can> rely on child watcher callback arguments.	383	The callback will be called with the pid and exit status (as returned by
		384	waitpid), so unlike other watcher types, you I<can> rely on child watcher
		385	callback arguments.
		386
		387	This watcher type works by installing a signal handler for C<SIGCHLD>,
		388	and since it cannot be shared, nothing else should use SIGCHLD or reap
		389	random child processes (waiting for specific child processes, e.g. inside
		390	C<system>, is just fine).
350		391
351	There is a slight catch to child watchers, however: you usually start them	392	There is a slight catch to child watchers, however: you usually start them
352	I<after> the child process was created, and this means the process could	393	I<after> the child process was created, and this means the process could
353	have exited already (and no SIGCHLD will be sent anymore).	394	have exited already (and no SIGCHLD will be sent anymore).
354		395
…		…
376	);	417	);
377		418
378	# do something else, then wait for process exit	419	# do something else, then wait for process exit
379	$done->recv;	420	$done->recv;
380		421
		422	=head2 IDLE WATCHERS
		423
		424	Sometimes there is a need to do something, but it is not so important
		425	to do it instantly, but only when there is nothing better to do. This
		426	"nothing better to do" is usually defined to be "no other events need
		427	attention by the event loop".
		428
		429	Idle watchers ideally get invoked when the event loop has nothing
		430	better to do, just before it would block the process to wait for new
		431	events. Instead of blocking, the idle watcher is invoked.
		432
		433	Most event loops unfortunately do not really support idle watchers (only
		434	EV, Event and Glib do it in a usable fashion) - for the rest, AnyEvent
		435	will simply call the callback "from time to time".
		436
		437	Example: read lines from STDIN, but only process them when the
		438	program is otherwise idle:
		439
		440	my @lines; # read data
		441	my $idle_w;
		442	my $io_w = AnyEvent->io (fh => \*STDIN, poll => 'r', cb => sub {
		443	push @lines, scalar <STDIN>;
		444
		445	# start an idle watcher, if not already done
		446	$idle_w \|\|= AnyEvent->idle (cb => sub {
		447	# handle only one line, when there are lines left
		448	if (my $line = shift @lines) {
		449	print "handled when idle: $line";
		450	} else {
		451	# otherwise disable the idle watcher again
		452	undef $idle_w;
		453	}
		454	});
		455	});
		456
381	=head2 CONDITION VARIABLES	457	=head2 CONDITION VARIABLES
382		458
383	If you are familiar with some event loops you will know that all of them	459	If you are familiar with some event loops you will know that all of them
384	require you to run some blocking "loop", "run" or similar function that	460	require you to run some blocking "loop", "run" or similar function that
385	will actively watch for new events and call your callbacks.	461	will actively watch for new events and call your callbacks.
…		…
818	=item L<AnyEvent::IGS>	894	=item L<AnyEvent::IGS>
819		895
820	A non-blocking interface to the Internet Go Server protocol (used by	896	A non-blocking interface to the Internet Go Server protocol (used by
821	L<App::IGS>).	897	L<App::IGS>).
822		898
823	=item L<Net::IRC3>	899	=item L<AnyEvent::IRC>
824		900
825	AnyEvent based IRC client module family.	901	AnyEvent based IRC client module family (replacing the older Net::IRC3).
826		902
827	=item L<Net::XMPP2>	903	=item L<Net::XMPP2>
828		904
829	AnyEvent based XMPP (Jabber protocol) module family.	905	AnyEvent based XMPP (Jabber protocol) module family.
830		906
…		…
854	no warnings;	930	no warnings;
855	use strict qw(vars subs);	931	use strict qw(vars subs);
856		932
857	use Carp;	933	use Carp;
858		934
859	our $VERSION = 4.233;	935	our $VERSION = 4.352;
860	our $MODEL;	936	our $MODEL;
861		937
862	our $AUTOLOAD;	938	our $AUTOLOAD;
863	our @ISA;	939	our @ISA;
864		940
…		…
896	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza	972	[POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
897	[Wx:: => AnyEvent::Impl::POE::],	973	[Wx:: => AnyEvent::Impl::POE::],
898	[Prima:: => AnyEvent::Impl::POE::],	974	[Prima:: => AnyEvent::Impl::POE::],
899	);	975	);
900		976
901	our %method = map +($_ => 1), qw(io timer time now signal child condvar one_event DESTROY);	977	our %method = map +($_ => 1),
		978	qw(io timer time now now_update signal child idle condvar one_event DESTROY);
902		979
903	our @post_detect;	980	our @post_detect;
904		981
905	sub post_detect(&) {	982	sub post_detect(&) {
906	my ($cb) = @_;	983	my ($cb) = @_;
…		…
911	1	988	1
912	} else {	989	} else {
913	push @post_detect, $cb;	990	push @post_detect, $cb;
914		991
915	defined wantarray	992	defined wantarray
916	? bless \$cb, "AnyEvent::Util::PostDetect"	993	? bless \$cb, "AnyEvent::Util::postdetect"
917	: ()	994	: ()
918	}	995	}
919	}	996	}
920		997
921	sub AnyEvent::Util::PostDetect::DESTROY {	998	sub AnyEvent::Util::postdetect::DESTROY {
922	@post_detect = grep $_ != ${$_[0]}, @post_detect;	999	@post_detect = grep $_ != ${$_[0]}, @post_detect;
923	}	1000	}
924		1001
925	sub detect() {	1002	sub detect() {
926	unless ($MODEL) {	1003	unless ($MODEL) {
…		…
963	last;	1040	last;
964	}	1041	}
965	}	1042	}
966		1043
967	$MODEL	1044	$MODEL
968	or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV, Event or Glib.";	1045	or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV, Event or Glib.\n";
969	}	1046	}
970	}	1047	}
971		1048
972	push @{"$MODEL\::ISA"}, "AnyEvent::Base";	1049	push @{"$MODEL\::ISA"}, "AnyEvent::Base";
973		1050
…		…
997	# to support binding more than one watcher per filehandle (they usually	1074	# to support binding more than one watcher per filehandle (they usually
998	# allow only one watcher per fd, so we dup it to get a different one).	1075	# allow only one watcher per fd, so we dup it to get a different one).
999	sub _dupfh($$$$) {	1076	sub _dupfh($$$$) {
1000	my ($poll, $fh, $r, $w) = @_;	1077	my ($poll, $fh, $r, $w) = @_;
1001		1078
1002	require Fcntl;
1003
1004	# cygwin requires the fh mode to be matching, unix doesn't	1079	# cygwin requires the fh mode to be matching, unix doesn't
1005	my ($rw, $mode) = $poll eq "r" ? ($r, "<")	1080	my ($rw, $mode) = $poll eq "r" ? ($r, "<")
1006	: $poll eq "w" ? ($w, ">")	1081	: $poll eq "w" ? ($w, ">")
1007	: Carp::croak "AnyEvent->io requires poll set to either 'r' or 'w'";	1082	: Carp::croak "AnyEvent->io requires poll set to either 'r' or 'w'";
1008		1083
1009	open my $fh2, "$mode&" . fileno $fh	1084	open my $fh2, "$mode&" . fileno $fh
1010	or die "cannot dup() filehandle: $!";	1085	or die "cannot dup() filehandle: $!,";
1011		1086
1012	# we assume CLOEXEC is already set by perl in all important cases	1087	# we assume CLOEXEC is already set by perl in all important cases
1013		1088
1014	($fh2, $rw)	1089	($fh2, $rw)
1015	}	1090	}
1016		1091
1017	package AnyEvent::Base;	1092	package AnyEvent::Base;
1018		1093
1019	# default implementation for now and time	1094	# default implementations for many methods
1020		1095
1021	BEGIN {	1096	BEGIN {
1022	if (eval "use Time::HiRes (); time (); 1") {	1097	if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1023	*_time = \&Time::HiRes::time;	1098	*_time = \&Time::HiRes::time;
1024	# if (eval "use POSIX (); (POSIX::times())...	1099	# if (eval "use POSIX (); (POSIX::times())...
1025	} else {	1100	} else {
1026	*_time = \&CORE::time; # epic fail	1101	*_time = sub { time }; # epic fail
1027	}	1102	}
1028	}	1103	}
1029		1104
1030	sub time { _time }	1105	sub time { _time }
1031	sub now { _time }	1106	sub now { _time }
		1107	sub now_update { }
1032		1108
1033	# default implementation for ->condvar	1109	# default implementation for ->condvar
1034		1110
1035	sub condvar {	1111	sub condvar {
1036	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, AnyEvent::CondVar::	1112	bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
1037	}	1113	}
1038		1114
1039	# default implementation for ->signal	1115	# default implementation for ->signal
1040		1116
1041	our %SIG_CB;	1117	our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);
		1118
		1119	sub _signal_exec {
		1120	sysread $SIGPIPE_R, my $dummy, 4;
		1121
		1122	while (%SIG_EV) {
		1123	for (keys %SIG_EV) {
		1124	delete $SIG_EV{$_};
		1125	$_->() for values %{ $SIG_CB{$_} \|\| {} };
		1126	}
		1127	}
		1128	}
1042		1129
1043	sub signal {	1130	sub signal {
1044	my (undef, %arg) = @_;	1131	my (undef, %arg) = @_;
1045		1132
		1133	unless ($SIGPIPE_R) {
		1134	require Fcntl;
		1135
		1136	if (AnyEvent::WIN32) {
		1137	require AnyEvent::Util;
		1138
		1139	($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
		1140	AnyEvent::Util::fh_nonblocking ($SIGPIPE_R) if $SIGPIPE_R;
		1141	AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) if $SIGPIPE_W; # just in case
		1142	} else {
		1143	pipe $SIGPIPE_R, $SIGPIPE_W;
		1144	fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R;
		1145	fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case
		1146	}
		1147
		1148	$SIGPIPE_R
		1149	or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
		1150
		1151	# not strictly required, as $^F is normally 2, but let's make sure...
		1152	fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
		1153	fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC;
		1154
		1155	$SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec);
		1156	}
		1157
1046	my $signal = uc $arg{signal}	1158	my $signal = uc $arg{signal}
1047	or Carp::croak "required option 'signal' is missing";	1159	or Carp::croak "required option 'signal' is missing";
1048		1160
1049	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};	1161	$SIG_CB{$signal}{$arg{cb}} = $arg{cb};
1050	$SIG{$signal} \|\|= sub {	1162	$SIG{$signal} \|\|= sub {
1051	$_->() for values %{ $SIG_CB{$signal} \|\| {} };	1163	local $!;
		1164	syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;
		1165	undef $SIG_EV{$signal};
1052	};	1166	};
1053		1167
1054	bless [$signal, $arg{cb}], "AnyEvent::Base::Signal"	1168	bless [$signal, $arg{cb}], "AnyEvent::Base::signal"
1055	}	1169	}
1056		1170
1057	sub AnyEvent::Base::Signal::DESTROY {	1171	sub AnyEvent::Base::signal::DESTROY {
1058	my ($signal, $cb) = @{$_[0]};	1172	my ($signal, $cb) = @{$_[0]};
1059		1173
1060	delete $SIG_CB{$signal}{$cb};	1174	delete $SIG_CB{$signal}{$cb};
1061		1175
1062	delete $SIG{$signal} unless keys %{ $SIG_CB{$signal} };	1176	delete $SIG{$signal} unless keys %{ $SIG_CB{$signal} };
…		…
1103	$CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld);	1217	$CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld);
1104	# child could be a zombie already, so make at least one round	1218	# child could be a zombie already, so make at least one round
1105	&_sigchld;	1219	&_sigchld;
1106	}	1220	}
1107		1221
1108	bless [$pid, $arg{cb}], "AnyEvent::Base::Child"	1222	bless [$pid, $arg{cb}], "AnyEvent::Base::child"
1109	}	1223	}
1110		1224
1111	sub AnyEvent::Base::Child::DESTROY {	1225	sub AnyEvent::Base::child::DESTROY {
1112	my ($pid, $cb) = @{$_[0]};	1226	my ($pid, $cb) = @{$_[0]};
1113		1227
1114	delete $PID_CB{$pid}{$cb};	1228	delete $PID_CB{$pid}{$cb};
1115	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };	1229	delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} };
1116		1230
1117	undef $CHLD_W unless keys %PID_CB;	1231	undef $CHLD_W unless keys %PID_CB;
		1232	}
		1233
		1234	# idle emulation is done by simply using a timer, regardless
		1235	# of whether the proces sis idle or not, and not letting
		1236	# the callback use more than 50% of the time.
		1237	sub idle {
		1238	my (undef, %arg) = @_;
		1239
		1240	my ($cb, $w, $rcb) = $arg{cb};
		1241
		1242	$rcb = sub {
		1243	if ($cb) {
		1244	$w = _time;
		1245	&$cb;
		1246	$w = _time - $w;
		1247
		1248	# never use more then 50% of the time for the idle watcher,
		1249	# within some limits
		1250	$w = 0.0001 if $w < 0.0001;
		1251	$w = 5 if $w > 5;
		1252
		1253	$w = AnyEvent->timer (after => $w, cb => $rcb);
		1254	} else {
		1255	# clean up...
		1256	undef $w;
		1257	undef $rcb;
		1258	}
		1259	};
		1260
		1261	$w = AnyEvent->timer (after => 0.05, cb => $rcb);
		1262
		1263	bless \\$cb, "AnyEvent::Base::idle"
		1264	}
		1265
		1266	sub AnyEvent::Base::idle::DESTROY {
		1267	undef $${$_[0]};
1118	}	1268	}
1119		1269
1120	package AnyEvent::CondVar;	1270	package AnyEvent::CondVar;
1121		1271
1122	our @ISA = AnyEvent::CondVar::Base::;	1272	our @ISA = AnyEvent::CondVar::Base::;
…		…
1256	used, and preference will be given to protocols mentioned earlier in the	1406	used, and preference will be given to protocols mentioned earlier in the
1257	list.	1407	list.
1258		1408
1259	This variable can effectively be used for denial-of-service attacks	1409	This variable can effectively be used for denial-of-service attacks
1260	against local programs (e.g. when setuid), although the impact is likely	1410	against local programs (e.g. when setuid), although the impact is likely
1261	small, as the program has to handle connection errors already-	1411	small, as the program has to handle conenction and other failures anyways.
1262		1412
1263	Examples: C<PERL_ANYEVENT_PROTOCOLS=ipv4,ipv6> - prefer IPv4 over IPv6,	1413	Examples: C<PERL_ANYEVENT_PROTOCOLS=ipv4,ipv6> - prefer IPv4 over IPv6,
1264	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>	1414	but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>
1265	- only support IPv4, never try to resolve or contact IPv6	1415	- only support IPv4, never try to resolve or contact IPv6
1266	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or	1416	addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or
…		…
1526	watcher.	1676	watcher.
1527		1677
1528	=head3 Results	1678	=head3 Results
1529		1679
1530	name watchers bytes create invoke destroy comment	1680	name watchers bytes create invoke destroy comment
1531	EV/EV 400000 244 0.56 0.46 0.31 EV native interface	1681	EV/EV 400000 224 0.47 0.35 0.27 EV native interface
1532	EV/Any 100000 244 2.50 0.46 0.29 EV + AnyEvent watchers	1682	EV/Any 100000 224 2.88 0.34 0.27 EV + AnyEvent watchers
1533	CoroEV/Any 100000 244 2.49 0.44 0.29 coroutines + Coro::Signal	1683	CoroEV/Any 100000 224 2.85 0.35 0.28 coroutines + Coro::Signal
1534	Perl/Any 100000 513 4.92 0.87 1.12 pure perl implementation	1684	Perl/Any 100000 452 4.13 0.73 0.95 pure perl implementation
1535	Event/Event 16000 516 31.88 31.30 0.85 Event native interface	1685	Event/Event 16000 517 32.20 31.80 0.81 Event native interface
1536	Event/Any 16000 590 35.75 31.42 1.08 Event + AnyEvent watchers	1686	Event/Any 16000 590 35.85 31.55 1.06 Event + AnyEvent watchers
1537	Glib/Any 16000 1357 98.22 12.41 54.00 quadratic behaviour	1687	Glib/Any 16000 1357 102.33 12.31 51.00 quadratic behaviour
1538	Tk/Any 2000 1860 26.97 67.98 14.00 SEGV with >> 2000 watchers	1688	Tk/Any 2000 1860 27.20 66.31 14.00 SEGV with >> 2000 watchers
1539	POE/Event 2000 6644 108.64 736.02 14.73 via POE::Loop::Event	1689	POE/Event 2000 6328 109.99 751.67 14.02 via POE::Loop::Event
1540	POE/Select 2000 6343 94.13 809.12 565.96 via POE::Loop::Select	1690	POE/Select 2000 6027 94.54 809.13 579.80 via POE::Loop::Select
1541		1691
1542	=head3 Discussion	1692	=head3 Discussion
1543		1693
1544	The benchmark does I<not> measure scalability of the event loop very	1694	The benchmark does I<not> measure scalability of the event loop very
1545	well. For example, a select-based event loop (such as the pure perl one)	1695	well. For example, a select-based event loop (such as the pure perl one)
…		…
1747	watchers, as the management overhead dominates.	1897	watchers, as the management overhead dominates.
1748		1898
1749	=back	1899	=back
1750		1900
1751		1901
		1902	=head1 SIGNALS
		1903
		1904	AnyEvent currently installs handlers for these signals:
		1905
		1906	=over 4
		1907
		1908	=item SIGCHLD
		1909
		1910	A handler for C<SIGCHLD> is installed by AnyEvent's child watcher
		1911	emulation for event loops that do not support them natively. Also, some
		1912	event loops install a similar handler.
		1913
		1914	=item SIGPIPE
		1915
		1916	A no-op handler is installed for C<SIGPIPE> when C<$SIG{PIPE}> is C<undef>
		1917	when AnyEvent gets loaded.
		1918
		1919	The rationale for this is that AnyEvent users usually do not really depend
		1920	on SIGPIPE delivery (which is purely an optimisation for shell use, or
		1921	badly-written programs), but C<SIGPIPE> can cause spurious and rare
		1922	program exits as a lot of people do not expect C<SIGPIPE> when writing to
		1923	some random socket.
		1924
		1925	The rationale for installing a no-op handler as opposed to ignoring it is
		1926	that this way, the handler will be restored to defaults on exec.
		1927
		1928	Feel free to install your own handler, or reset it to defaults.
		1929
		1930	=back
		1931
		1932	=cut
		1933
		1934	$SIG{PIPE} = sub { }
		1935	unless defined $SIG{PIPE};
		1936
		1937
1752	=head1 FORK	1938	=head1 FORK
1753		1939
1754	Most event libraries are not fork-safe. The ones who are usually are	1940	Most event libraries are not fork-safe. The ones who are usually are
1755	because they rely on inefficient but fork-safe C<select> or C<poll>	1941	because they rely on inefficient but fork-safe C<select> or C<poll>
1756	calls. Only L<EV> is fully fork-aware.	1942	calls. Only L<EV> is fully fork-aware.
…		…
1784	=head1 BUGS	1970	=head1 BUGS
1785		1971
1786	Perl 5.8 has numerous memleaks that sometimes hit this module and are hard	1972	Perl 5.8 has numerous memleaks that sometimes hit this module and are hard
1787	to work around. If you suffer from memleaks, first upgrade to Perl 5.10	1973	to work around. If you suffer from memleaks, first upgrade to Perl 5.10
1788	and check wether the leaks still show up. (Perl 5.10.0 has other annoying	1974	and check wether the leaks still show up. (Perl 5.10.0 has other annoying
1789	mamleaks, such as leaking on C<map> and C<grep> but it is usually not as	1975	memleaks, such as leaking on C<map> and C<grep> but it is usually not as
1790	pronounced).	1976	pronounced).
1791		1977
1792		1978
1793	=head1 SEE ALSO	1979	=head1 SEE ALSO
1794		1980

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Comparing AnyEvent/lib/AnyEvent.pm (file contents): Revision 1.180 by root, Sat Sep 6 07:00:45 2008 UTC vs. Revision 1.207 by root, Thu Apr 23 22:44:30 2009 UTC

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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.180 by root, Sat Sep 6 07:00:45 2008 UTC vs.
Revision 1.207 by root, Thu Apr 23 22:44:30 2009 UTC