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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 1.366 by root, Wed Aug 17 02:02:38 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
1050=back 1061=back
1051 1062
1052=head1 WHAT TO DO IN A MODULE 1063=head1 WHAT TO DO IN A MODULE
1053 1064
1054As 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
… …
1202 1213
1203BEGIN { AnyEvent::common_sense } 1214BEGIN { AnyEvent::common_sense }
1204 1215
1205use Carp (); 1216use Carp ();
1206 1217
1207our $VERSION = '5.34'; 1218our $VERSION = '6.01';
1208our $MODEL; 1219our $MODEL;
1209 1220
1210our $AUTOLOAD;
1211our @ISA; 1221our @ISA;
1212 1222
1213our @REGISTRY; 1223our @REGISTRY;
1214 1224
1215our $VERBOSE; 1225our $VERBOSE;
… …
1221 1231
1222 delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} 1232 delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV}
1223 if ${^TAINT}; 1233 if ${^TAINT};
1224 1234
1225 $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; 1235 $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1;
1226
1227} 1236}
1228 1237
1229our $MAX_SIGNAL_LATENCY = 10; 1238our $MAX_SIGNAL_LATENCY = 10;
1230 1239
1231our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred 1240our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred
… …
1235 $PROTOCOL{$_} = ++$idx 1244 $PROTOCOL{$_} = ++$idx
1236 for reverse split /\s*,\s*/, 1245 for reverse split /\s*,\s*/,
1237 $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; 1246 $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6";
1238} 1247}
1239 1248
1249our @post_detect;
1250
1251sub post_detect(&) {
1252 my ($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($$;@) {
1284 require AnyEvent::Log;
1285 # AnyEvent::Log overwrites this function
1286 goto &log;
1287}
1288
1240my @models = ( 1289our @models = (
1241 [EV:: => AnyEvent::Impl::EV:: , 1], 1290 [EV:: => AnyEvent::Impl::EV:: , 1],
1242 [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1], 1291 [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1],
1243 # everything below here will not (normally) be autoprobed 1292 # everything below here will not (normally) be autoprobed
1244 # as the pure perl backend should work everywhere 1293 # as the pure perl backend should work everywhere
1245 # and is usually faster 1294 # and is usually faster
… …
1250 [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles 1299 [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles
1251 [Qt:: => AnyEvent::Impl::Qt::], # requires special main program 1300 [Qt:: => AnyEvent::Impl::Qt::], # requires special main program
1252 [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza 1301 [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza
1253 [Wx:: => AnyEvent::Impl::POE::], 1302 [Wx:: => AnyEvent::Impl::POE::],
1254 [Prima:: => AnyEvent::Impl::POE::], 1303 [Prima:: => AnyEvent::Impl::POE::],
1255 [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], 1304 [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect
1256 [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::], 1305 [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::],
1257 [FLTK:: => AnyEvent::Impl::FLTK::], 1306 [FLTK:: => AnyEvent::Impl::FLTK2::],
1258); 1307);
1259 1308
1260our %method = map +($_ => 1), 1309our @isa_hook;
1310
1311sub _isa_set {
1312 my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL);
1313
1314 @{"$pkg[$_-1]::ISA"} = $pkg[$_]
1315 for 1 .. $#pkg;
1316
1317 grep $_ && $_->[1], @isa_hook
1318 and AE::_reset ();
1319}
1320
1321# used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy
1322sub _isa_hook($$;$) {
1323 my ($i, $pkg, $reset_ae) = @_;
1324
1325 $isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef;
1326
1327 _isa_set;
1328}
1329
1330# all autoloaded methods reserve the complete glob, not just the method slot.
1331# due to bugs in perls method cache implementation.
1261 qw(io timer time now now_update signal child idle condvar DESTROY); 1332our @methods = qw(io timer time now now_update signal child idle condvar);
1262
1263our @post_detect;
1264
1265sub post_detect(&) {
1266 my ($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 1333
1279sub 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
1280 # free some memory 1340 # free some memory
1281 *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;
1282 1349
1283 local $!; # for good measure
1284 local $SIG{__DIE__};
1285
1286 if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) { 1350 if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) {
1287 my $model = "AnyEvent::Impl::$1"; 1351 my $model = $1;
1352 $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//;
1288 if (eval "require $model") { 1353 if (eval "require $model") {
1289 $MODEL = $model; 1354 $MODEL = $model;
1290 warn "AnyEvent: loaded model '$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 $VERBOSE >= 7;
1291 } else { 1357 } else {
1292 warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; 1358 AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@";
1293 } 1359 }
1294 } 1360 }
1295 1361
1296 # check for already loaded models 1362 # check for already loaded models
1297 unless ($MODEL) { 1363 unless ($MODEL) {
1298 for (@REGISTRY, @models) { 1364 for (@REGISTRY, @models) {
1299 my ($package, $model) = @$_; 1365 my ($package, $model) = @$_;
1300 if (${"$package\::VERSION"} > 0) { 1366 if (${"$package\::VERSION"} > 0) {
1301 if (eval "require $model") { 1367 if (eval "require $model") {
1302 $MODEL = $model; 1368 $MODEL = $model;
1303 warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2; 1369 AnyEvent::log 7 => "autodetected model '$model', using it."
1370 if $VERBOSE >= 7;
1304 last; 1371 last;
1305 } 1372 }
1306 } 1373 }
1307 } 1374 }
1308 1375
… …
1315 and eval "require $package" 1382 and eval "require $package"
1316 and ${"$package\::VERSION"} > 0 1383 and ${"$package\::VERSION"} > 0
1317 and eval "require $model" 1384 and eval "require $model"
1318 ) { 1385 ) {
1319 $MODEL = $model; 1386 $MODEL = $model;
1320 warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2; 1387 AnyEvent::log 7 => "autoloaded model '$model', using it."
1388 if $VERBOSE >= 7;
1321 last; 1389 last;
1322 } 1390 }
1323 } 1391 }
1324 1392
1325 $MODEL 1393 $MODEL
1326 or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n"; 1394 or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?";
1327 } 1395 }
1328 } 1396 }
1329 1397
1330 @models = (); # free probe data 1398 # free memory only needed for probing
1399 undef @models;
1400 undef @REGISTRY;
1331 1401
1332 push @{"$MODEL\::ISA"}, "AnyEvent::Base"; 1402 push @{"$MODEL\::ISA"}, "AnyEvent::Base";
1333 unshift @ISA, $MODEL;
1334 1403
1335 # now nuke some methods that are overridden by the backend. 1404 # now nuke some methods that are overridden by the backend.
1336 # SUPER is not allowed. 1405 # SUPER usage is not allowed in these.
1337 for (qw(time signal child idle)) { 1406 for (qw(time signal child idle)) {
1338 undef &{"AnyEvent::Base::$_"} 1407 undef &{"AnyEvent::Base::$_"}
1339 if defined &{"$MODEL\::$_"}; 1408 if defined &{"$MODEL\::$_"};
1340 } 1409 }
1341 1410
1411 _isa_set;
1412
1342 if ($ENV{PERL_ANYEVENT_STRICT}) { 1413 if ($ENV{PERL_ANYEVENT_STRICT}) {
1343 eval { require AnyEvent::Strict }; 1414 require AnyEvent::Strict;
1344 warn "AnyEvent: cannot load AnyEvent::Strict: $@"
1345 if $@ && $VERBOSE;
1346 } 1415 }
1347 1416
1417 if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) {
1418 require AnyEvent::Debug;
1419 AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP});
1420 }
1421
1422 if (length $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
1348 (shift @post_detect)->() while @post_detect; 1433 (shift @post_detect)->() while @post_detect;
1434 undef @post_detect;
1349 1435
1350 *post_detect = sub(&) { 1436 *post_detect = sub(&) {
1351 shift->(); 1437 shift->();
1352 1438
1353 undef 1439 undef
1354 }; 1440 };
1355 1441
1356 $MODEL 1442 $MODEL
1357} 1443}
1358 1444
1359sub AUTOLOAD { 1445for my $name (@methods) {
1360 (my $func = $AUTOLOAD) =~ s/.*://; 1446 *$name = sub {
1361
1362 $method{$func}
1363 or Carp::croak "$func: not a valid AnyEvent class method";
1364
1365 detect; 1447 detect;
1366 1448 # we use goto because
1367 my $class = shift; 1449 # a) it makes the thunk more transparent
1368 $class->$func (@_); 1450 # b) it allows us to delete the thunk later
1369} 1451 goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" }
1370 1452 };
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} 1453}
1387 1454
1388# 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
1389# to support binding more than one watcher per filehandle (they usually 1456# 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). 1457# allow only one watcher per fd, so we dup it to get a different one).
… …
1414 1481
1415package AE; 1482package AE;
1416 1483
1417our $VERSION = $AnyEvent::VERSION; 1484our $VERSION = $AnyEvent::VERSION;
1418 1485
1486sub _reset() {
1487 eval q{
1419# 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
1420# implementations can overwrite these. 1489 # implementations can overwrite these.
1421 1490
1422sub io($$$) { 1491 sub io($$$) {
1423 AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) 1492 AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2])
1424} 1493 }
1425 1494
1426sub timer($$$) { 1495 sub timer($$$) {
1427 AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) 1496 AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2])
1428} 1497 }
1429 1498
1430sub signal($$) { 1499 sub signal($$) {
1431 AnyEvent->signal (signal => $_[0], cb => $_[1]) 1500 AnyEvent->signal (signal => $_[0], cb => $_[1])
1432} 1501 }
1433 1502
1434sub child($$) { 1503 sub child($$) {
1435 AnyEvent->child (pid => $_[0], cb => $_[1]) 1504 AnyEvent->child (pid => $_[0], cb => $_[1])
1436} 1505 }
1437 1506
1438sub idle($) { 1507 sub idle($) {
1439 AnyEvent->idle (cb => $_[0]) 1508 AnyEvent->idle (cb => $_[0]);
1440} 1509 }
1441 1510
1442sub cv(;&) { 1511 sub cv(;&) {
1443 AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) 1512 AnyEvent->condvar (@_ ? (cb => $_[0]) : ())
1444} 1513 }
1445 1514
1446sub now() { 1515 sub now() {
1447 AnyEvent->now 1516 AnyEvent->now
1448} 1517 }
1449 1518
1450sub now_update() { 1519 sub now_update() {
1451 AnyEvent->now_update 1520 AnyEvent->now_update
1452} 1521 }
1453 1522
1454sub time() { 1523 sub time() {
1455 AnyEvent->time 1524 AnyEvent->time
1456} 1525 }
1457 1526
1458*postpone = \&AnyEvent::postpone; 1527 *postpone = \&AnyEvent::postpone;
1528 *log = \&AnyEvent::log;
1529 };
1530 die if $@;
1531}
1532
1533BEGIN { _reset }
1459 1534
1460package AnyEvent::Base; 1535package AnyEvent::Base;
1461 1536
1462# default implementations for many methods 1537# default implementations for many methods
1463 1538
1464sub time { 1539sub time {
1465 eval q{ # poor man's autoloading {} 1540 eval q{ # poor man's autoloading {}
1466 # probe for availability of Time::HiRes 1541 # probe for availability of Time::HiRes
1467 if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { 1542 if (eval "use Time::HiRes (); Time::HiRes::time (); 1") {
1468 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 () };
1469 *AE::time = \&Time::HiRes::time; 1546 *AE::time = \& Time::HiRes::time ;
1470 # if (eval "use POSIX (); (POSIX::times())... 1547 # if (eval "use POSIX (); (POSIX::times())...
1471 } else { 1548 } else {
1472 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 };
1473 *AE::time = sub (){ time }; # epic fail 1551 *AE::time = sub (){ CORE::time };
1474 } 1552 }
1475 1553
1476 *time = sub { AE::time }; # different prototypes 1554 *now = \&time;
1477 }; 1555 };
1478 die if $@; 1556 die if $@;
1479 1557
1480 &time 1558 &time
1481} 1559}
1482 1560
1483*now = \&time; 1561*now = \&time;
1484
1485sub now_update { } 1562sub now_update { }
1486 1563
1487sub _poll { 1564sub _poll {
1488 Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught"; 1565 Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught";
1489} 1566}
… …
1575 1652
1576sub signal { 1653sub signal {
1577 eval q{ # poor man's autoloading {} 1654 eval q{ # poor man's autoloading {}
1578 # probe for availability of Async::Interrupt 1655 # probe for availability of Async::Interrupt
1579 if (_have_async_interrupt) { 1656 if (_have_async_interrupt) {
1580 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;
1581 1659
1582 $SIGPIPE_R = new Async::Interrupt::EventPipe; 1660 $SIGPIPE_R = new Async::Interrupt::EventPipe;
1583 $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; 1661 $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec;
1584 1662
1585 } else { 1663 } else {
1586 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;
1587 1666
1588 if (AnyEvent::WIN32) { 1667 if (AnyEvent::WIN32) {
1589 require AnyEvent::Util; 1668 require AnyEvent::Util;
1590 1669
1591 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); 1670 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
… …
1667 : sysread $SIGPIPE_R, (my $dummy), 9; 1746 : sysread $SIGPIPE_R, (my $dummy), 9;
1668 1747
1669 while (%SIG_EV) { 1748 while (%SIG_EV) {
1670 for (keys %SIG_EV) { 1749 for (keys %SIG_EV) {
1671 delete $SIG_EV{$_}; 1750 delete $SIG_EV{$_};
1672 $_->() for values %{ $SIG_CB{$_} || {} }; 1751 &$_ for values %{ $SIG_CB{$_} || {} };
1673 } 1752 }
1674 } 1753 }
1675 }; 1754 };
1676 }; 1755 };
1677 die if $@; 1756 die if $@;
… …
1744 1823
1745 my ($cb, $w, $rcb) = $arg{cb}; 1824 my ($cb, $w, $rcb) = $arg{cb};
1746 1825
1747 $rcb = sub { 1826 $rcb = sub {
1748 if ($cb) { 1827 if ($cb) {
1749 $w = _time; 1828 $w = AE::time;
1750 &$cb; 1829 &$cb;
1751 $w = _time - $w; 1830 $w = AE::time - $w;
1752 1831
1753 # 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,
1754 # within some limits 1833 # within some limits
1755 $w = 0.0001 if $w < 0.0001; 1834 $w = 0.0001 if $w < 0.0001;
1756 $w = 5 if $w > 5; 1835 $w = 5 if $w > 5;
… …
1900 1979
1901By default, AnyEvent will be completely silent except in fatal 1980By default, AnyEvent will be completely silent except in fatal
1902conditions. You can set this environment variable to make AnyEvent more 1981conditions. You can set this environment variable to make AnyEvent more
1903talkative. 1982talkative.
1904 1983
1905When 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
1906conditions, 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
1907C<PERL_ANYEVENT_MODEL>. 1986C<PERL_ANYEVENT_MODEL>.
1908 1987
1909When 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
1910model it chooses. 1989model it chooses.
1911 1990
1912When 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
1913which optional modules it loads and how it implements certain features. 1992which optional modules it loads and how it implements certain features.
1914 1993
… …
1925Unlike 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>
1926>>, it is definitely recommended to keep it off in production. Keeping 2005>>, it is definitely recommended to keep it off in production. Keeping
1927C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs 2006C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs
1928can be very useful, however. 2007can be very useful, however.
1929 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
1930=item C<PERL_ANYEVENT_MODEL> 2031=item C<PERL_ANYEVENT_MODEL>
1931 2032
1932This 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
1933auto detection and -probing kicks in. It must be a string consisting 2034auto detection and -probing kicks in.
1934entirely 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
1935and 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
1936used 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
1937auto detection and -probing. 2040auto detection and -probing.
1938 2041
1939This 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).
1940 2045
1941For 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
1942could start your program like this: 2047could start your program like this:
1943 2048
1944 PERL_ANYEVENT_MODEL=Perl perl ... 2049 PERL_ANYEVENT_MODEL=Perl perl ...
… …
2336(even when used without AnyEvent), but most event loops have acceptable 2441(even when used without AnyEvent), but most event loops have acceptable
2337performance with or without AnyEvent. 2442performance with or without AnyEvent.
2338 2443
2339=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
2340the 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
2341adds AnyEvent significant overhead. 2446does AnyEvent add significant overhead.
2342 2447
2343=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
2344reasonable memory usage. 2449reasonable memory usage.
2345 2450
2346=back 2451=back
… …
2721 2826
2722Tutorial/Introduction: L<AnyEvent::Intro>. 2827Tutorial/Introduction: L<AnyEvent::Intro>.
2723 2828
2724FAQ: L<AnyEvent::FAQ>. 2829FAQ: L<AnyEvent::FAQ>.
2725 2830
2726Utility functions: L<AnyEvent::Util>. 2831Utility functions: L<AnyEvent::Util> (misc. grab-bag), L<AnyEvent::Log>
2832(simply logging).
2727 2833
2834Development/Debugging: L<AnyEvent::Strict> (stricter checking),
2835L<AnyEvent::Debug> (interactive shell, watcher tracing).
2836
2728Event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>, L<Glib::EV>, 2837Supported 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>. 2838L<Glib::EV>, L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>,
2839L<Qt>, L<POE>, L<FLTK>.
2730 2840
2731Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, 2841Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>,
2732L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, 2842L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>,
2733L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, 2843L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>,
2734L<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>.
2735 2846
2736Non-blocking file handles, sockets, TCP clients and 2847Non-blocking handles, pipes, stream sockets, TCP clients and
2737servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. 2848servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>.
2738 2849
2739Asynchronous DNS: L<AnyEvent::DNS>. 2850Asynchronous DNS: L<AnyEvent::DNS>.
2740 2851
2741Thread 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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