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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.354 by root, Thu Aug 11 21:26:39 2011 UTC vs.
Revision 1.367 by root, Wed Aug 17 02:14:17 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 }
1045It should use C<postpone>: 1049It should use C<postpone>:
1046 1050
1047 AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later 1051 AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later
1048 if $some_error_condition; 1052 if $some_error_condition;
1049 1053
1054=item AnyEvent::log $level, $msg[, @args]
1055
1056Log the given C<$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
1061If you want to sprinkle loads of logging calls around your code, consider
1062creating a logger callback with the C<AnyEvent::Log::logger< function.
1063
1050=back 1064=back
1051 1065
1052=head1 WHAT TO DO IN A MODULE 1066=head1 WHAT TO DO IN A MODULE
1053 1067
1054As a module author, you should C<use AnyEvent> and call AnyEvent methods 1068As a module author, you should C<use AnyEvent> and call AnyEvent methods
1202 1216
1203BEGIN { AnyEvent::common_sense } 1217BEGIN { AnyEvent::common_sense }
1204 1218
1205use Carp (); 1219use Carp ();
1206 1220
1207our $VERSION = '5.34'; 1221our $VERSION = '6.01';
1208our $MODEL; 1222our $MODEL;
1209 1223
1210our $AUTOLOAD;
1211our @ISA; 1224our @ISA;
1212 1225
1213our @REGISTRY; 1226our @REGISTRY;
1214 1227
1215our $VERBOSE; 1228our $VERBOSE;
1221 1234
1222 delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} 1235 delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1223 if ${^TAINT}; 1236 if ${^TAINT};
1224 1237
1225 $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; 1238 $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
1226
1227} 1239}
1228 1240
1229our $MAX_SIGNAL_LATENCY = 10; 1241our $MAX_SIGNAL_LATENCY = 10;
1230 1242
1231our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred 1243our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred
1235 $PROTOCOL{$_} = ++$idx 1247 $PROTOCOL{$_} = ++$idx
1236 for reverse split /\s*,\s*/, 1248 for reverse split /\s*,\s*/,
1237 $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; 1249 $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6";
1238} 1250}
1239 1251
1252our @post_detect;
1253
1254sub post_detect(&) {
1255 my ($cb) = @_;
1256
1257 push @post_detect, $cb;
1258
1259 defined wantarray
1260 ? bless \$cb, "AnyEvent::Util::postdetect"
1261 : ()
1262}
1263
1264sub AnyEvent::Util::postdetect::DESTROY {
1265 @post_detect = grep $_ != ${$_[0]}, @post_detect;
1266}
1267
1268our $POSTPONE_W;
1269our @POSTPONE;
1270
1271sub _postpone_exec {
1272 undef $POSTPONE_W;
1273
1274 &{ shift @POSTPONE }
1275 while @POSTPONE;
1276}
1277
1278sub postpone(&) {
1279 push @POSTPONE, shift;
1280
1281 $POSTPONE_W ||= AE::timer (0, 0, \&_postpone_exec);
1282
1283 ()
1284}
1285
1286sub log($$;@) {
1287 require AnyEvent::Log;
1288 # AnyEvent::Log overwrites this function
1289 goto &log;
1290}
1291
1240my @models = ( 1292our @models = (
1241 [EV:: => AnyEvent::Impl::EV:: , 1], 1293 [EV:: => AnyEvent::Impl::EV:: , 1],
1242 [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1], 1294 [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1243 # everything below here will not (normally) be autoprobed 1295 # everything below here will not (normally) be autoprobed
1244 # as the pure perl backend should work everywhere 1296 # as the pure perl backend should work everywhere
1245 # and is usually faster 1297 # and is usually faster
1250 [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles 1302 [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1251 [Qt:: => AnyEvent::Impl::Qt::], # requires special main program 1303 [Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1252 [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza 1304 [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1253 [Wx:: => AnyEvent::Impl::POE::], 1305 [Wx:: => AnyEvent::Impl::POE::],
1254 [Prima:: => AnyEvent::Impl::POE::], 1306 [Prima:: => AnyEvent::Impl::POE::],
1255 [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], 1307 [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1256 [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::], 1308 [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1257 [FLTK:: => AnyEvent::Impl::FLTK::], 1309 [FLTK:: => AnyEvent::Impl::FLTK2::],
1258); 1310);
1259 1311
1260our %method = map +($_ => 1), 1312our @isa_hook;
1313
1314sub _isa_set {
1315 my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
1316
1317 @{"$pkg[$_-1]::ISA"} = $pkg[$_]
1318 for 1 .. $#pkg;
1319
1320 grep $_ && $_->[1], @isa_hook
1321 and AE::_reset ();
1322}
1323
1324# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
1325sub _isa_hook($$;$) {
1326 my ($i, $pkg, $reset_ae) = @_;
1327
1328 $isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
1329
1330 _isa_set;
1331}
1332
1333# all autoloaded methods reserve the complete glob, not just the method slot.
1334# due to bugs in perls method cache implementation.
1261 qw(io timer time now now_update signal child idle condvar DESTROY); 1335our @methods = qw(io timer time now now_update signal child idle condvar);
1262
1263our @post_detect;
1264
1265sub post_detect(&) {
1266 my ($cb) = @_;
1267
1268 push @post_detect, $cb;
1269
1270 defined wantarray
1271 ? bless \$cb, "AnyEvent::Util::postdetect"
1272 : ()
1273}
1274
1275sub AnyEvent::Util::postdetect::DESTROY {
1276 @post_detect = grep $_ != ${$_[0]}, @post_detect;
1277}
1278 1336
1279sub detect() { 1337sub detect() {
1338 return $MODEL if $MODEL; # some programs keep references to detect
1339
1340 local $!; # for good measure
1341 local $SIG{__DIE__}; # we use eval
1342
1280 # free some memory 1343 # free some memory
1281 *detect = sub () { $MODEL }; 1344 *detect = sub () { $MODEL };
1345 # undef &func doesn't correctly update the method cache. grmbl.
1346 # so we delete the whole glob. grmbl.
1347 # otoh, perl doesn't let me undef an active usb, but it lets me free
1348 # a glob with an active sub. hrm. i hope it works, but perl is
1349 # usually buggy in this department. sigh.
1350 delete @{"AnyEvent::"}{@methods};
1351 undef @methods;
1282 1352
1283 local $!; # for good measure
1284 local $SIG{__DIE__};
1285
1286 if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) { 1353 if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1287 my $model = "AnyEvent::Impl::$1"; 1354 my $model = $1;
1355 $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1288 if (eval "require $model") { 1356 if (eval "require $model") {
1289 $MODEL = $model; 1357 $MODEL = $model;
1290 warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2; 1358 AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."
1359 if $VERBOSE >= 7;
1291 } else { 1360 } else {
1292 warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; 1361 AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1293 } 1362 }
1294 } 1363 }
1295 1364
1296 # check for already loaded models 1365 # check for already loaded models
1297 unless ($MODEL) { 1366 unless ($MODEL) {
1298 for (@REGISTRY, @models) { 1367 for (@REGISTRY, @models) {
1299 my ($package, $model) = @$_; 1368 my ($package, $model) = @$_;
1300 if (${"$package\::VERSION"} > 0) { 1369 if (${"$package\::VERSION"} > 0) {
1301 if (eval "require $model") { 1370 if (eval "require $model") {
1302 $MODEL = $model; 1371 $MODEL = $model;
1303 warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2; 1372 AnyEvent::log 7 => "autodetected model '$model', using it."
1373 if $VERBOSE >= 7;
1304 last; 1374 last;
1305 } 1375 }
1306 } 1376 }
1307 } 1377 }
1308 1378
1315 and eval "require $package" 1385 and eval "require $package"
1316 and ${"$package\::VERSION"} > 0 1386 and ${"$package\::VERSION"} > 0
1317 and eval "require $model" 1387 and eval "require $model"
1318 ) { 1388 ) {
1319 $MODEL = $model; 1389 $MODEL = $model;
1320 warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2; 1390 AnyEvent::log 7 => "autoloaded model '$model', using it."
1391 if $VERBOSE >= 7;
1321 last; 1392 last;
1322 } 1393 }
1323 } 1394 }
1324 1395
1325 $MODEL 1396 $MODEL
1326 or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n"; 1397 or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1327 } 1398 }
1328 } 1399 }
1329 1400
1330 @models = (); # free probe data 1401 # free memory only needed for probing
1402 undef @models;
1403 undef @REGISTRY;
1331 1404
1332 push @{"$MODEL\::ISA"}, "AnyEvent::Base"; 1405 push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1333 unshift @ISA, $MODEL;
1334 1406
1335 # now nuke some methods that are overridden by the backend. 1407 # now nuke some methods that are overridden by the backend.
1336 # SUPER is not allowed. 1408 # SUPER usage is not allowed in these.
1337 for (qw(time signal child idle)) { 1409 for (qw(time signal child idle)) {
1338 undef &{"AnyEvent::Base::$_"} 1410 undef &{"AnyEvent::Base::$_"}
1339 if defined &{"$MODEL\::$_"}; 1411 if defined &{"$MODEL\::$_"};
1340 } 1412 }
1341 1413
1414 _isa_set;
1415
1416 # we're officially open!
1417
1342 if ($ENV{PERL_ANYEVENT_STRICT}) { 1418 if ($ENV{PERL_ANYEVENT_STRICT}) {
1343 eval { require AnyEvent::Strict }; 1419 require AnyEvent::Strict;
1344 warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1345 if $@ && $VERBOSE;
1346 } 1420 }
1347 1421
1422 if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
1423 require AnyEvent::Debug;
1424 AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
1425 }
1426
1427 if (length $ENV{PERL_ANYEVENT_DEBUG_SHELL}) {
1428 require AnyEvent::Socket;
1429 require AnyEvent::Debug;
1430
1431 my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL};
1432 $shell =~ s/\$\$/$$/g;
1433
1434 my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell);
1435 $AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service);
1436 }
1437
1438 # now the anyevent environment is set up as the user told us to, so
1439 # call the actual user code - post detects
1440
1348 (shift @post_detect)->() while @post_detect; 1441 (shift @post_detect)->() while @post_detect;
1442 undef @post_detect;
1349 1443
1350 *post_detect = sub(&) { 1444 *post_detect = sub(&) {
1351 shift->(); 1445 shift->();
1352 1446
1353 undef 1447 undef
1354 }; 1448 };
1355 1449
1356 $MODEL 1450 $MODEL
1357} 1451}
1358 1452
1359sub AUTOLOAD { 1453for my $name (@methods) {
1360 (my $func = $AUTOLOAD) =~ s/.*://; 1454 *$name = sub {
1361
1362 $method{$func}
1363 or Carp::croak "$func: not a valid AnyEvent class method";
1364
1365 detect; 1455 detect;
1366 1456 # we use goto because
1367 my $class = shift; 1457 # a) it makes the thunk more transparent
1368 $class->$func (@_); 1458 # b) it allows us to delete the thunk later
1369} 1459 goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
1370 1460 };
1371our $POSTPONE_W;
1372our @POSTPONE;
1373
1374sub _postpone_exec {
1375 undef $POSTPONE_W;
1376 (pop @POSTPONE)->()
1377 while @POSTPONE;
1378}
1379
1380sub postpone(&) {
1381 push @POSTPONE, shift;
1382
1383 $POSTPONE_W ||= AE::timer (0, 0, \&_postpone_exec);
1384
1385 ()
1386} 1461}
1387 1462
1388# utility function to dup a filehandle. this is used by many backends 1463# utility function to dup a filehandle. this is used by many backends
1389# to support binding more than one watcher per filehandle (they usually 1464# to support binding more than one watcher per filehandle (they usually
1390# allow only one watcher per fd, so we dup it to get a different one). 1465# allow only one watcher per fd, so we dup it to get a different one).
1414 1489
1415package AE; 1490package AE;
1416 1491
1417our $VERSION = $AnyEvent::VERSION; 1492our $VERSION = $AnyEvent::VERSION;
1418 1493
1494sub _reset() {
1495 eval q{
1419# fall back to the main API by default - backends and AnyEvent::Base 1496 # fall back to the main API by default - backends and AnyEvent::Base
1420# implementations can overwrite these. 1497 # implementations can overwrite these.
1421 1498
1422sub io($$$) { 1499 sub io($$$) {
1423 AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) 1500 AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1424} 1501 }
1425 1502
1426sub timer($$$) { 1503 sub timer($$$) {
1427 AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) 1504 AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1428} 1505 }
1429 1506
1430sub signal($$) { 1507 sub signal($$) {
1431 AnyEvent->signal (signal => $_[0], cb => $_[1]) 1508 AnyEvent->signal (signal => $_[0], cb => $_[1])
1432} 1509 }
1433 1510
1434sub child($$) { 1511 sub child($$) {
1435 AnyEvent->child (pid => $_[0], cb => $_[1]) 1512 AnyEvent->child (pid => $_[0], cb => $_[1])
1436} 1513 }
1437 1514
1438sub idle($) { 1515 sub idle($) {
1439 AnyEvent->idle (cb => $_[0]) 1516 AnyEvent->idle (cb => $_[0]);
1440} 1517 }
1441 1518
1442sub cv(;&) { 1519 sub cv(;&) {
1443 AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) 1520 AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1444} 1521 }
1445 1522
1446sub now() { 1523 sub now() {
1447 AnyEvent->now 1524 AnyEvent->now
1448} 1525 }
1449 1526
1450sub now_update() { 1527 sub now_update() {
1451 AnyEvent->now_update 1528 AnyEvent->now_update
1452} 1529 }
1453 1530
1454sub time() { 1531 sub time() {
1455 AnyEvent->time 1532 AnyEvent->time
1456} 1533 }
1457 1534
1458*postpone = \&AnyEvent::postpone; 1535 *postpone = \&AnyEvent::postpone;
1536 *log = \&AnyEvent::log;
1537 };
1538 die if $@;
1539}
1540
1541BEGIN { _reset }
1459 1542
1460package AnyEvent::Base; 1543package AnyEvent::Base;
1461 1544
1462# default implementations for many methods 1545# default implementations for many methods
1463 1546
1464sub time { 1547sub time {
1465 eval q{ # poor man's autoloading {} 1548 eval q{ # poor man's autoloading {}
1466 # probe for availability of Time::HiRes 1549 # probe for availability of Time::HiRes
1467 if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { 1550 if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1468 warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; 1551 AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."
1552 if $AnyEvent::VERBOSE >= 8;
1553 *time = sub { Time::HiRes::time () };
1469 *AE::time = \&Time::HiRes::time; 1554 *AE::time = \& Time::HiRes::time ;
1470 # if (eval "use POSIX (); (POSIX::times())... 1555 # if (eval "use POSIX (); (POSIX::times())...
1471 } else { 1556 } else {
1472 warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE; 1557 AnyEvent::log critical => "using built-in time(), WARNING, no sub-second resolution!";
1558 *time = sub { CORE::time };
1473 *AE::time = sub (){ time }; # epic fail 1559 *AE::time = sub (){ CORE::time };
1474 } 1560 }
1475 1561
1476 *time = sub { AE::time }; # different prototypes 1562 *now = \&time;
1477 }; 1563 };
1478 die if $@; 1564 die if $@;
1479 1565
1480 &time 1566 &time
1481} 1567}
1482 1568
1483*now = \&time; 1569*now = \&time;
1484
1485sub now_update { } 1570sub now_update { }
1486 1571
1487sub _poll { 1572sub _poll {
1488 Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught"; 1573 Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
1489} 1574}
1575 1660
1576sub signal { 1661sub signal {
1577 eval q{ # poor man's autoloading {} 1662 eval q{ # poor man's autoloading {}
1578 # probe for availability of Async::Interrupt 1663 # probe for availability of Async::Interrupt
1579 if (_have_async_interrupt) { 1664 if (_have_async_interrupt) {
1580 warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; 1665 AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."
1666 if $AnyEvent::VERBOSE >= 8;
1581 1667
1582 $SIGPIPE_R = new Async::Interrupt::EventPipe; 1668 $SIGPIPE_R = new Async::Interrupt::EventPipe;
1583 $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; 1669 $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1584 1670
1585 } else { 1671 } else {
1586 warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; 1672 AnyEvent::log 8 => "using emulated perl signal handling with latency timer."
1673 if $AnyEvent::VERBOSE >= 8;
1587 1674
1588 if (AnyEvent::WIN32) { 1675 if (AnyEvent::WIN32) {
1589 require AnyEvent::Util; 1676 require AnyEvent::Util;
1590 1677
1591 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); 1678 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
1667 : sysread $SIGPIPE_R, (my $dummy), 9; 1754 : sysread $SIGPIPE_R, (my $dummy), 9;
1668 1755
1669 while (%SIG_EV) { 1756 while (%SIG_EV) {
1670 for (keys %SIG_EV) { 1757 for (keys %SIG_EV) {
1671 delete $SIG_EV{$_}; 1758 delete $SIG_EV{$_};
1672 $_->() for values %{ $SIG_CB{$_} || {} }; 1759 &$_ for values %{ $SIG_CB{$_} || {} };
1673 } 1760 }
1674 } 1761 }
1675 }; 1762 };
1676 }; 1763 };
1677 die if $@; 1764 die if $@;
1744 1831
1745 my ($cb, $w, $rcb) = $arg{cb}; 1832 my ($cb, $w, $rcb) = $arg{cb};
1746 1833
1747 $rcb = sub { 1834 $rcb = sub {
1748 if ($cb) { 1835 if ($cb) {
1749 $w = _time; 1836 $w = AE::time;
1750 &$cb; 1837 &$cb;
1751 $w = _time - $w; 1838 $w = AE::time - $w;
1752 1839
1753 # never use more then 50% of the time for the idle watcher, 1840 # never use more then 50% of the time for the idle watcher,
1754 # within some limits 1841 # within some limits
1755 $w = 0.0001 if $w < 0.0001; 1842 $w = 0.0001 if $w < 0.0001;
1756 $w = 5 if $w > 5; 1843 $w = 5 if $w > 5;
1900 1987
1901By default, AnyEvent will be completely silent except in fatal 1988By default, AnyEvent will be completely silent except in fatal
1902conditions. You can set this environment variable to make AnyEvent more 1989conditions. You can set this environment variable to make AnyEvent more
1903talkative. 1990talkative.
1904 1991
1905When set to C<1> or higher, causes AnyEvent to warn about unexpected 1992When set to C<5> or higher, causes AnyEvent to warn about unexpected
1906conditions, such as not being able to load the event model specified by 1993conditions, such as not being able to load the event model specified by
1907C<PERL_ANYEVENT_MODEL>. 1994C<PERL_ANYEVENT_MODEL>.
1908 1995
1909When set to C<2> or higher, cause AnyEvent to report to STDERR which event 1996When set to C<7> or higher, cause AnyEvent to report to STDERR which event
1910model it chooses. 1997model it chooses.
1911 1998
1912When set to C<8> or higher, then AnyEvent will report extra information on 1999When set to C<8> or higher, then AnyEvent will report extra information on
1913which optional modules it loads and how it implements certain features. 2000which optional modules it loads and how it implements certain features.
1914 2001
1925Unlike C<use strict> (or its modern cousin, C<< use L<common::sense> 2012Unlike C<use strict> (or its modern cousin, C<< use L<common::sense>
1926>>, it is definitely recommended to keep it off in production. Keeping 2013>>, it is definitely recommended to keep it off in production. Keeping
1927C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs 2014C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1928can be very useful, however. 2015can be very useful, however.
1929 2016
2017=item C<PERL_ANYEVENT_DEBUG_SHELL>
2018
2019If this env variable is set, then its contents will be interpreted by
2020C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of
2021C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on
2022that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>.
2023
2024This takes place when the first watcher is created.
2025
2026For example, to bind a debug shell on a unix domain socket in
2027F<< /tmp/debug<pid>.sock >>, you could use this:
2028
2029 PERL_ANYEVENT_DEBUG_SHELL=/tmp/debug\$\$.sock perlprog
2030
2031Note that creating sockets in F</tmp> is very unsafe on multiuser
2032systems.
2033
2034=item C<PERL_ANYEVENT_DEBUG_WRAP>
2035
2036Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for
2037debugging purposes. See C<AnyEvent::Debug::wrap> for details.
2038
1930=item C<PERL_ANYEVENT_MODEL> 2039=item C<PERL_ANYEVENT_MODEL>
1931 2040
1932This can be used to specify the event model to be used by AnyEvent, before 2041This can be used to specify the event model to be used by AnyEvent, before
1933auto detection and -probing kicks in. It must be a string consisting 2042auto detection and -probing kicks in.
1934entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended 2043
2044It normally is a string consisting entirely of ASCII letters (e.g. C<EV>
2045or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the
1935and the resulting module name is loaded and if the load was successful, 2046resulting module name is loaded and - if the load was successful - used as
1936used as event model. If it fails to load AnyEvent will proceed with 2047event model backend. If it fails to load then AnyEvent will proceed with
1937auto detection and -probing. 2048auto detection and -probing.
1938 2049
1939This functionality might change in future versions. 2050If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then
2051nothing gets prepended and the module name is used as-is (hint: C<::> at
2052the end of a string designates a module name and quotes it appropriately).
1940 2053
1941For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you 2054For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you
1942could start your program like this: 2055could start your program like this:
1943 2056
1944 PERL_ANYEVENT_MODEL=Perl perl ... 2057 PERL_ANYEVENT_MODEL=Perl perl ...
2336(even when used without AnyEvent), but most event loops have acceptable 2449(even when used without AnyEvent), but most event loops have acceptable
2337performance with or without AnyEvent. 2450performance with or without AnyEvent.
2338 2451
2339=item * The overhead AnyEvent adds is usually much smaller than the overhead of 2452=item * The overhead AnyEvent adds is usually much smaller than the overhead of
2340the actual event loop, only with extremely fast event loops such as EV 2453the actual event loop, only with extremely fast event loops such as EV
2341adds AnyEvent significant overhead. 2454does AnyEvent add significant overhead.
2342 2455
2343=item * You should avoid POE like the plague if you want performance or 2456=item * You should avoid POE like the plague if you want performance or
2344reasonable memory usage. 2457reasonable memory usage.
2345 2458
2346=back 2459=back
2721 2834
2722Tutorial/Introduction: L<AnyEvent::Intro>. 2835Tutorial/Introduction: L<AnyEvent::Intro>.
2723 2836
2724FAQ: L<AnyEvent::FAQ>. 2837FAQ: L<AnyEvent::FAQ>.
2725 2838
2726Utility functions: L<AnyEvent::Util>. 2839Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
2840(simply logging).
2727 2841
2842Development/Debugging: L<AnyEvent::Strict> (stricter checking),
2843L<AnyEvent::Debug> (interactive shell, watcher tracing).
2844
2728Event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>, L<Glib::EV>, 2845Supported event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>,
2729L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. 2846L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
2847L<Qt>, L<POE>, L<FLTK>.
2730 2848
2731Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, 2849Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2732L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, 2850L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2733L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, 2851L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2734L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>. 2852L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>,
2853L<AnyEvent::Impl::FLTK>.
2735 2854
2736Non-blocking file handles, sockets, TCP clients and 2855Non-blocking handles, pipes, stream sockets, TCP clients and
2737servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. 2856servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2738 2857
2739Asynchronous DNS: L<AnyEvent::DNS>. 2858Asynchronous DNS: L<AnyEvent::DNS>.
2740 2859
2741Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>. 2860Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>.

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