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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 1.365 by root, Tue Aug 16 14:47:26 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
887Qt requires the Qt::Application to be instantiated first, but will 887Qt requires the Qt::Application to be instantiated first, but will
888otherwise be picked up automatically. As long as the main program 888otherwise be picked up automatically. As long as the main program
… …
933 933
934Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model 934Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model
935if necessary. You should only call this function right before you would 935if necessary. You should only call this function right before you would
936have created an AnyEvent watcher anyway, that is, as late as possible at 936have created an AnyEvent watcher anyway, that is, as late as possible at
937runtime, and not e.g. during initialisation of your module. 937runtime, and not e.g. during initialisation of your module.
938
939The effect of calling this function is as if a watcher had been created
940(specifically, actions that happen "when the first watcher is created"
941happen when calling detetc as well).
938 942
939If you need to do some initialisation before AnyEvent watchers are 943If you need to do some initialisation before AnyEvent watchers are
940created, use C<post_detect>. 944created, 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
1016Arranges for the block to be executed as soon as possible, but not before
1017the call itself returns. In practise, the block will be executed just
1018before the event loop polls for new events, or shortly afterwards.
1019
1020This function never returns anything (to make the C<return postpone { ...
1021}> idiom more useful.
1022
1023To understand the usefulness of this function, consider a function that
1024asynchronously does something for you and returns some transaction
1025object or guard to let you cancel the operation. For example,
1026C<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
1034Imagine that this function could instantly call the callback, for
1035example, because it detects an obvious error such as a negative port
1036number. Invoking the callback before the function returns causes problems
1037however: the callback will be called and will try to delete the guard
1038object. But since the function hasn't returned yet, there is nothing to
1039delete. When the function eventually returns it will assign the guard
1040object to C<< $self->{connect_guard} >>, where it will likely never be
1041deleted, so the program thinks it is still trying to connect.
1042
1043This is where C<AnyEvent::postpone> should be used. Instead of calling the
1044callback directly on error:
1045
1046 $cb->(undef), return # signal error to callback, BAD!
1047 if $some_error_condition;
1048
1049It should use C<postpone>:
1050
1051 AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later
1052 if $some_error_condition;
1053
1054=item AnyEvent::log $level, $msg[, @args]
1055
1056Log the given C<$msg> at the given C<$level>.
1057
1058Loads AnyEvent::Log on first use and calls C<AnyEvent::Log::log> -
1059consequently, look at the L<AnyEvent::Log> documentation for details.
1060
1010=back 1061=back
1011 1062
1012=head1 WHAT TO DO IN A MODULE 1063=head1 WHAT TO DO IN A MODULE
1013 1064
1014As a module author, you should C<use AnyEvent> and call AnyEvent methods 1065As a module author, you should C<use AnyEvent> and call AnyEvent methods
… …
1162 1213
1163BEGIN { AnyEvent::common_sense } 1214BEGIN { AnyEvent::common_sense }
1164 1215
1165use Carp (); 1216use Carp ();
1166 1217
1167our $VERSION = '5.34'; 1218our $VERSION = '6.01';
1168our $MODEL; 1219our $MODEL;
1169 1220
1170our $AUTOLOAD;
1171our @ISA; 1221our @ISA;
1172 1222
1173our @REGISTRY; 1223our @REGISTRY;
1174 1224
1175our $VERBOSE; 1225our $VERBOSE;
… …
1181 1231
1182 delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} 1232 delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1183 if ${^TAINT}; 1233 if ${^TAINT};
1184 1234
1185 $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; 1235 $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
1186
1187} 1236}
1188 1237
1189our $MAX_SIGNAL_LATENCY = 10; 1238our $MAX_SIGNAL_LATENCY = 10;
1190 1239
1191our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred 1240our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred
… …
1195 $PROTOCOL{$_} = ++$idx 1244 $PROTOCOL{$_} = ++$idx
1196 for reverse split /\s*,\s*/, 1245 for reverse split /\s*,\s*/,
1197 $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; 1246 $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6";
1198} 1247}
1199 1248
1249our @post_detect;
1250
1251sub post_detect(&) {
1252 my ($cb) = @_;
1253
1254 push @post_detect, $cb;
1255
1256 defined wantarray
1257 ? bless \$cb, "AnyEvent::Util::postdetect"
1258 : ()
1259}
1260
1261sub AnyEvent::Util::postdetect::DESTROY {
1262 @post_detect = grep $_ != ${$_[0]}, @post_detect;
1263}
1264
1265our $POSTPONE_W;
1266our @POSTPONE;
1267
1268sub _postpone_exec {
1269 undef $POSTPONE_W;
1270
1271 &{ shift @POSTPONE }
1272 while @POSTPONE;
1273}
1274
1275sub postpone(&) {
1276 push @POSTPONE, shift;
1277
1278 $POSTPONE_W ||= AE::timer (0, 0, \&_postpone_exec);
1279
1280 ()
1281}
1282
1283sub log($$;@) {
1284 require AnyEvent::Log;
1285 # AnyEvent::Log overwrites this function
1286 goto &log;
1287}
1288
1200my @models = ( 1289our @models = (
1201 [EV:: => AnyEvent::Impl::EV:: , 1], 1290 [EV:: => AnyEvent::Impl::EV:: , 1],
1202 [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1], 1291 [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1203 # everything below here will not (normally) be autoprobed 1292 # everything below here will not (normally) be autoprobed
1204 # as the pure perl backend should work everywhere 1293 # as the pure perl backend should work everywhere
1205 # and is usually faster 1294 # and is usually faster
… …
1210 [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles 1299 [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1211 [Qt:: => AnyEvent::Impl::Qt::], # requires special main program 1300 [Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1212 [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza 1301 [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1213 [Wx:: => AnyEvent::Impl::POE::], 1302 [Wx:: => AnyEvent::Impl::POE::],
1214 [Prima:: => AnyEvent::Impl::POE::], 1303 [Prima:: => AnyEvent::Impl::POE::],
1215 [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], 1304 [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1216 [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::], 1305 [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1217 [FLTK:: => AnyEvent::Impl::FLTK::], 1306 [FLTK:: => AnyEvent::Impl::FLTK2::],
1218); 1307);
1219 1308
1220our %method = map +($_ => 1), 1309our @isa_hook;
1310
1311sub _isa_set {
1312 my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
1313
1314 @{"$pkg[$_-1]::ISA"} = $pkg[$_]
1315 for 1 .. $#pkg;
1316
1317 grep $_ && $_->[1], @isa_hook
1318 and AE::_reset ();
1319}
1320
1321# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
1322sub _isa_hook($$;$) {
1323 my ($i, $pkg, $reset_ae) = @_;
1324
1325 $isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
1326
1327 _isa_set;
1328}
1329
1330# all autoloaded methods reserve the complete glob, not just the method slot.
1331# due to bugs in perls method cache implementation.
1221 qw(io timer time now now_update signal child idle condvar DESTROY); 1332our @methods = qw(io timer time now now_update signal child idle condvar);
1222
1223our @post_detect;
1224
1225sub post_detect(&) {
1226 my ($cb) = @_;
1227
1228 push @post_detect, $cb;
1229
1230 defined wantarray
1231 ? bless \$cb, "AnyEvent::Util::postdetect"
1232 : ()
1233}
1234
1235sub AnyEvent::Util::postdetect::DESTROY {
1236 @post_detect = grep $_ != ${$_[0]}, @post_detect;
1237}
1238 1333
1239sub detect() { 1334sub detect() {
1335 return $MODEL if $MODEL; # some programs keep references to detect
1336
1337 local $!; # for good measure
1338 local $SIG{__DIE__}; # we use eval
1339
1240 # free some memory 1340 # free some memory
1241 *detect = sub () { $MODEL }; 1341 *detect = sub () { $MODEL };
1342 # undef &func doesn't correctly update the method cache. grmbl.
1343 # so we delete the whole glob. grmbl.
1344 # otoh, perl doesn't let me undef an active usb, but it lets me free
1345 # a glob with an active sub. hrm. i hope it works, but perl is
1346 # usually buggy in this department. sigh.
1347 delete @{"AnyEvent::"}{@methods};
1348 undef @methods;
1242 1349
1243 local $!; # for good measure
1244 local $SIG{__DIE__};
1245
1246 if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) { 1350 if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1247 my $model = "AnyEvent::Impl::$1"; 1351 my $model = $1;
1352 $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1248 if (eval "require $model") { 1353 if (eval "require $model") {
1249 $MODEL = $model; 1354 $MODEL = $model;
1250 warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2; 1355 AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."
1356 if $VERBOSE >= 7;
1251 } else { 1357 } else {
1252 warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; 1358 AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1253 } 1359 }
1254 } 1360 }
1255 1361
1256 # check for already loaded models 1362 # check for already loaded models
1257 unless ($MODEL) { 1363 unless ($MODEL) {
1258 for (@REGISTRY, @models) { 1364 for (@REGISTRY, @models) {
1259 my ($package, $model) = @$_; 1365 my ($package, $model) = @$_;
1260 if (${"$package\::VERSION"} > 0) { 1366 if (${"$package\::VERSION"} > 0) {
1261 if (eval "require $model") { 1367 if (eval "require $model") {
1262 $MODEL = $model; 1368 $MODEL = $model;
1263 warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2; 1369 AnyEvent::log 7 => "autodetected model '$model', using it."
1370 if $VERBOSE >= 7;
1264 last; 1371 last;
1265 } 1372 }
1266 } 1373 }
1267 } 1374 }
1268 1375
… …
1275 and eval "require $package" 1382 and eval "require $package"
1276 and ${"$package\::VERSION"} > 0 1383 and ${"$package\::VERSION"} > 0
1277 and eval "require $model" 1384 and eval "require $model"
1278 ) { 1385 ) {
1279 $MODEL = $model; 1386 $MODEL = $model;
1280 warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2; 1387 AnyEvent::log 7 => "autoloaded model '$model', using it."
1388 if $VERBOSE >= 7;
1281 last; 1389 last;
1282 } 1390 }
1283 } 1391 }
1284 1392
1285 $MODEL 1393 $MODEL
1286 or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n"; 1394 or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1287 } 1395 }
1288 } 1396 }
1289 1397
1290 @models = (); # free probe data 1398 # free memory only needed for probing
1399 undef @models;
1400 undef @REGISTRY;
1291 1401
1292 push @{"$MODEL\::ISA"}, "AnyEvent::Base"; 1402 push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1293 unshift @ISA, $MODEL;
1294 1403
1295 # now nuke some methods that are overridden by the backend. 1404 # now nuke some methods that are overridden by the backend.
1296 # SUPER is not allowed. 1405 # SUPER usage is not allowed in these.
1297 for (qw(time signal child idle)) { 1406 for (qw(time signal child idle)) {
1298 undef &{"AnyEvent::Base::$_"} 1407 undef &{"AnyEvent::Base::$_"}
1299 if defined &{"$MODEL\::$_"}; 1408 if defined &{"$MODEL\::$_"};
1300 } 1409 }
1301 1410
1411 _isa_set;
1412
1302 if ($ENV{PERL_ANYEVENT_STRICT}) { 1413 if ($ENV{PERL_ANYEVENT_STRICT}) {
1303 eval { require AnyEvent::Strict }; 1414 require AnyEvent::Strict;
1304 warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1305 if $@ && $VERBOSE;
1306 } 1415 }
1307 1416
1417 if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
1418 require AnyEvent::Debug;
1419 AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
1420 }
1421
1422 if (exists $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
1423 require AnyEvent::Socket;
1424 require AnyEvent::Debug;
1425
1426 my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
1427 $shell =~ s/\$\$/$$/g;
1428
1429 my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
1430 $AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
1431 }
1432
1308 (shift @post_detect)->() while @post_detect; 1433 (shift @post_detect)->() while @post_detect;
1434 undef @post_detect;
1309 1435
1310 *post_detect = sub(&) { 1436 *post_detect = sub(&) {
1311 shift->(); 1437 shift->();
1312 1438
1313 undef 1439 undef
1314 }; 1440 };
1315 1441
1316 $MODEL 1442 $MODEL
1317} 1443}
1318 1444
1319sub AUTOLOAD { 1445for my $name (@methods) {
1320 (my $func = $AUTOLOAD) =~ s/.*://; 1446 *$name = sub {
1321
1322 $method{$func}
1323 or Carp::croak "$func: not a valid AnyEvent class method";
1324
1325 detect; 1447 detect;
1326 1448 # we use goto because
1327 my $class = shift; 1449 # a) it makes the thunk more transparent
1328 $class->$func (@_); 1450 # b) it allows us to delete the thunk later
1451 goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
1452 };
1329} 1453}
1330 1454
1331# utility function to dup a filehandle. this is used by many backends 1455# utility function to dup a filehandle. this is used by many backends
1332# to support binding more than one watcher per filehandle (they usually 1456# to support binding more than one watcher per filehandle (they usually
1333# allow only one watcher per fd, so we dup it to get a different one). 1457# allow only one watcher per fd, so we dup it to get a different one).
… …
1357 1481
1358package AE; 1482package AE;
1359 1483
1360our $VERSION = $AnyEvent::VERSION; 1484our $VERSION = $AnyEvent::VERSION;
1361 1485
1486sub _reset() {
1487 eval q{
1362# fall back to the main API by default - backends and AnyEvent::Base 1488 # fall back to the main API by default - backends and AnyEvent::Base
1363# implementations can overwrite these. 1489 # implementations can overwrite these.
1364 1490
1365sub io($$$) { 1491 sub io($$$) {
1366 AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) 1492 AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1367} 1493 }
1368 1494
1369sub timer($$$) { 1495 sub timer($$$) {
1370 AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) 1496 AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1371} 1497 }
1372 1498
1373sub signal($$) { 1499 sub signal($$) {
1374 AnyEvent->signal (signal => $_[0], cb => $_[1]) 1500 AnyEvent->signal (signal => $_[0], cb => $_[1])
1375} 1501 }
1376 1502
1377sub child($$) { 1503 sub child($$) {
1378 AnyEvent->child (pid => $_[0], cb => $_[1]) 1504 AnyEvent->child (pid => $_[0], cb => $_[1])
1379} 1505 }
1380 1506
1381sub idle($) { 1507 sub idle($) {
1382 AnyEvent->idle (cb => $_[0]) 1508 AnyEvent->idle (cb => $_[0]);
1383} 1509 }
1384 1510
1385sub cv(;&) { 1511 sub cv(;&) {
1386 AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) 1512 AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1387} 1513 }
1388 1514
1389sub now() { 1515 sub now() {
1390 AnyEvent->now 1516 AnyEvent->now
1391} 1517 }
1392 1518
1393sub now_update() { 1519 sub now_update() {
1394 AnyEvent->now_update 1520 AnyEvent->now_update
1395} 1521 }
1396 1522
1397sub time() { 1523 sub time() {
1398 AnyEvent->time 1524 AnyEvent->time
1525 }
1526
1527 *postpone = \&AnyEvent::postpone;
1528 *log = \&AnyEvent::log;
1529 };
1530 die if $@;
1399} 1531}
1532
1533BEGIN { _reset }
1400 1534
1401package AnyEvent::Base; 1535package AnyEvent::Base;
1402 1536
1403# default implementations for many methods 1537# default implementations for many methods
1404 1538
1405sub time { 1539sub time {
1406 eval q{ # poor man's autoloading {} 1540 eval q{ # poor man's autoloading {}
1407 # probe for availability of Time::HiRes 1541 # probe for availability of Time::HiRes
1408 if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { 1542 if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1409 warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; 1543 AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."
1544 if $AnyEvent::VERBOSE >= 8;
1545 *time = sub { Time::HiRes::time () };
1410 *AE::time = \&Time::HiRes::time; 1546 *AE::time = \& Time::HiRes::time ;
1411 # if (eval "use POSIX (); (POSIX::times())... 1547 # if (eval "use POSIX (); (POSIX::times())...
1412 } else { 1548 } else {
1413 warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE; 1549 AnyEvent::log critical => "using built-in time(), WARNING, no sub-second resolution!";
1550 *time = sub { CORE::time };
1414 *AE::time = sub (){ time }; # epic fail 1551 *AE::time = sub (){ CORE::time };
1415 } 1552 }
1416 1553
1417 *time = sub { AE::time }; # different prototypes 1554 *now = \&time;
1418 }; 1555 };
1419 die if $@; 1556 die if $@;
1420 1557
1421 &time 1558 &time
1422} 1559}
1423 1560
1424*now = \&time; 1561*now = \&time;
1425
1426sub now_update { } 1562sub now_update { }
1427 1563
1428sub _poll { 1564sub _poll {
1429 Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught"; 1565 Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
1430} 1566}
1431 1567
1432# default implementation for ->condvar 1568# default implementation for ->condvar
1433# in fact,t he default should not be overwritten 1569# in fact, the default should not be overwritten
1434 1570
1435sub condvar { 1571sub condvar {
1436 eval q{ # poor man's autoloading {} 1572 eval q{ # poor man's autoloading {}
1437 *condvar = sub { 1573 *condvar = sub {
1438 bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar" 1574 bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar"
… …
1516 1652
1517sub signal { 1653sub signal {
1518 eval q{ # poor man's autoloading {} 1654 eval q{ # poor man's autoloading {}
1519 # probe for availability of Async::Interrupt 1655 # probe for availability of Async::Interrupt
1520 if (_have_async_interrupt) { 1656 if (_have_async_interrupt) {
1521 warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; 1657 AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."
1658 if $AnyEvent::VERBOSE >= 8;
1522 1659
1523 $SIGPIPE_R = new Async::Interrupt::EventPipe; 1660 $SIGPIPE_R = new Async::Interrupt::EventPipe;
1524 $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; 1661 $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1525 1662
1526 } else { 1663 } else {
1527 warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; 1664 AnyEvent::log 8 => "using emulated perl signal handling with latency timer."
1665 if $AnyEvent::VERBOSE >= 8;
1528 1666
1529 if (AnyEvent::WIN32) { 1667 if (AnyEvent::WIN32) {
1530 require AnyEvent::Util; 1668 require AnyEvent::Util;
1531 1669
1532 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); 1670 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
… …
1608 : sysread $SIGPIPE_R, (my $dummy), 9; 1746 : sysread $SIGPIPE_R, (my $dummy), 9;
1609 1747
1610 while (%SIG_EV) { 1748 while (%SIG_EV) {
1611 for (keys %SIG_EV) { 1749 for (keys %SIG_EV) {
1612 delete $SIG_EV{$_}; 1750 delete $SIG_EV{$_};
1613 $_->() for values %{ $SIG_CB{$_} || {} }; 1751 &$_ for values %{ $SIG_CB{$_} || {} };
1614 } 1752 }
1615 } 1753 }
1616 }; 1754 };
1617 }; 1755 };
1618 die if $@; 1756 die if $@;
… …
1685 1823
1686 my ($cb, $w, $rcb) = $arg{cb}; 1824 my ($cb, $w, $rcb) = $arg{cb};
1687 1825
1688 $rcb = sub { 1826 $rcb = sub {
1689 if ($cb) { 1827 if ($cb) {
1690 $w = _time; 1828 $w = AE::time;
1691 &$cb; 1829 &$cb;
1692 $w = _time - $w; 1830 $w = AE::time - $w;
1693 1831
1694 # never use more then 50% of the time for the idle watcher, 1832 # never use more then 50% of the time for the idle watcher,
1695 # within some limits 1833 # within some limits
1696 $w = 0.0001 if $w < 0.0001; 1834 $w = 0.0001 if $w < 0.0001;
1697 $w = 5 if $w > 5; 1835 $w = 5 if $w > 5;
… …
1841 1979
1842By default, AnyEvent will be completely silent except in fatal 1980By default, AnyEvent will be completely silent except in fatal
1843conditions. You can set this environment variable to make AnyEvent more 1981conditions. You can set this environment variable to make AnyEvent more
1844talkative. 1982talkative.
1845 1983
1846When set to C<1> or higher, causes AnyEvent to warn about unexpected 1984When set to C<5> or higher, causes AnyEvent to warn about unexpected
1847conditions, such as not being able to load the event model specified by 1985conditions, such as not being able to load the event model specified by
1848C<PERL_ANYEVENT_MODEL>. 1986C<PERL_ANYEVENT_MODEL>.
1849 1987
1850When set to C<2> or higher, cause AnyEvent to report to STDERR which event 1988When set to C<7> or higher, cause AnyEvent to report to STDERR which event
1851model it chooses. 1989model it chooses.
1852 1990
1853When set to C<8> or higher, then AnyEvent will report extra information on 1991When set to C<8> or higher, then AnyEvent will report extra information on
1854which optional modules it loads and how it implements certain features. 1992which optional modules it loads and how it implements certain features.
1855 1993
… …
1866Unlike C<use strict> (or its modern cousin, C<< use L<common::sense> 2004Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1867>>, it is definitely recommended to keep it off in production. Keeping 2005>>, it is definitely recommended to keep it off in production. Keeping
1868C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs 2006C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1869can be very useful, however. 2007can be very useful, however.
1870 2008
2009=item C<PERL_ANYEVENT_DEBUG_SHELL>
2010
2011If this env variable is set, then its contents will be interpreted by
2012C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of
2013C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on
2014that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>.
2015
2016This takes place when the first watcher is created.
2017
2018For example, to bind a debug shell on a unix domain socket in
2019F<< /tmp/debug<pid>.sock >>, you could use this:
2020
2021 PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
2022
2023Note that creating sockets in F</tmp> is very unsafe on multiuser
2024systems.
2025
2026=item C<PERL_ANYEVENT_DEBUG_WRAP>
2027
2028Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
2029debugging purposes. See C<AnyEvent::Debug::wrap> for details.
2030
1871=item C<PERL_ANYEVENT_MODEL> 2031=item C<PERL_ANYEVENT_MODEL>
1872 2032
1873This can be used to specify the event model to be used by AnyEvent, before 2033This can be used to specify the event model to be used by AnyEvent, before
1874auto detection and -probing kicks in. It must be a string consisting 2034auto detection and -probing kicks in.
1875entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended 2035
2036It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
2037or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1876and the resulting module name is loaded and if the load was successful, 2038resulting module name is loaded and - if the load was successful - used as
1877used as event model. If it fails to load AnyEvent will proceed with 2039event model backend. If it fails to load then AnyEvent will proceed with
1878auto detection and -probing. 2040auto detection and -probing.
1879 2041
1880This functionality might change in future versions. 2042If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
2043nothing gets prepended and the module name is used as-is (hint: C<::> at
2044the end of a string designates a module name and quotes it appropriately).
1881 2045
1882For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you 2046For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1883could start your program like this: 2047could start your program like this:
1884 2048
1885 PERL_ANYEVENT_MODEL=Perl perl ... 2049 PERL_ANYEVENT_MODEL=Perl perl ...
… …
2277(even when used without AnyEvent), but most event loops have acceptable 2441(even when used without AnyEvent), but most event loops have acceptable
2278performance with or without AnyEvent. 2442performance with or without AnyEvent.
2279 2443
2280=item * The overhead AnyEvent adds is usually much smaller than the overhead of 2444=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2281the actual event loop, only with extremely fast event loops such as EV 2445the actual event loop, only with extremely fast event loops such as EV
2282adds AnyEvent significant overhead. 2446does AnyEvent add significant overhead.
2283 2447
2284=item * You should avoid POE like the plague if you want performance or 2448=item * You should avoid POE like the plague if you want performance or
2285reasonable memory usage. 2449reasonable memory usage.
2286 2450
2287=back 2451=back
… …
2662 2826
2663Tutorial/Introduction: L<AnyEvent::Intro>. 2827Tutorial/Introduction: L<AnyEvent::Intro>.
2664 2828
2665FAQ: L<AnyEvent::FAQ>. 2829FAQ: L<AnyEvent::FAQ>.
2666 2830
2667Utility functions: L<AnyEvent::Util>. 2831Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
2832(simply logging).
2668 2833
2834Development/Debugging: L<AnyEvent::Strict> (stricter checking),
2835L<AnyEvent::Debug> (interactive shell, watcher tracing).
2836
2669Event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>, L<Glib::EV>, 2837Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
2670L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. 2838L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
2839L<Qt>, L<POE>, L<FLTK>.
2671 2840
2672Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, 2841Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2673L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, 2842L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2674L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, 2843L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2675L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>. 2844L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
2845L<AnyEvent::Impl::FLTK>.
2676 2846
2677Non-blocking file handles, sockets, TCP clients and 2847Non-blocking handles, pipes, stream sockets, TCP clients and
2678servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. 2848servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2679 2849
2680Asynchronous DNS: L<AnyEvent::DNS>. 2850Asynchronous DNS: L<AnyEvent::DNS>.
2681 2851
2682Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>. 2852Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.

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