… | |
… | |
415 | not restart syscalls (that includes L<Async::Interrupt> and AnyEvent's |
415 | not restart syscalls (that includes L<Async::Interrupt> and AnyEvent's |
416 | pure perl implementation). |
416 | pure perl implementation). |
417 | |
417 | |
418 | =head3 Safe/Unsafe Signals |
418 | =head3 Safe/Unsafe Signals |
419 | |
419 | |
420 | Perl signals can be either "safe" (synchronous to opcode handling) or |
420 | Perl signals can be either "safe" (synchronous to opcode handling) |
421 | "unsafe" (asynchronous) - the former might get delayed indefinitely, the |
421 | or "unsafe" (asynchronous) - the former might delay signal delivery |
422 | latter might corrupt your memory. |
422 | indefinitely, the latter might corrupt your memory. |
423 | |
423 | |
424 | AnyEvent signal handlers are, in addition, synchronous to the event loop, |
424 | AnyEvent signal handlers are, in addition, synchronous to the event loop, |
425 | i.e. they will not interrupt your running perl program but will only be |
425 | i.e. they will not interrupt your running perl program but will only be |
426 | called as part of the normal event handling (just like timer, I/O etc. |
426 | called as part of the normal event handling (just like timer, I/O etc. |
427 | callbacks, too). |
427 | callbacks, too). |
428 | |
428 | |
429 | =head3 Signal Races, Delays and Workarounds |
429 | =head3 Signal Races, Delays and Workarounds |
430 | |
430 | |
431 | Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching |
431 | Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support |
432 | callbacks to signals in a generic way, which is a pity, as you cannot |
432 | attaching callbacks to signals in a generic way, which is a pity, |
433 | do race-free signal handling in perl, requiring C libraries for |
433 | as you cannot do race-free signal handling in perl, requiring |
434 | this. AnyEvent will try to do its best, which means in some cases, |
434 | C libraries for this. AnyEvent will try to do its best, which |
435 | signals will be delayed. The maximum time a signal might be delayed is |
435 | means in some cases, signals will be delayed. The maximum time |
436 | specified in C<$AnyEvent::MAX_SIGNAL_LATENCY> (default: 10 seconds). This |
436 | a signal might be delayed is 10 seconds by default, but can |
437 | variable can be changed only before the first signal watcher is created, |
437 | be overriden via C<$ENV{PERL_ANYEVENT_MAX_SIGNAL_LATENCY}> or |
438 | and should be left alone otherwise. This variable determines how often |
438 | C<$AnyEvent::MAX_SIGNAL_LATENCY> - see the L<ENVIRONMENT VARIABLES> |
439 | AnyEvent polls for signals (in case a wake-up was missed). Higher values |
439 | section for details. |
440 | will cause fewer spurious wake-ups, which is better for power and CPU |
|
|
441 | saving. |
|
|
442 | |
440 | |
443 | All these problems can be avoided by installing the optional |
441 | All these problems can be avoided by installing the optional |
444 | L<Async::Interrupt> module, which works with most event loops. It will not |
442 | L<Async::Interrupt> module, which works with most event loops. It will not |
445 | work with inherently broken event loops such as L<Event> or L<Event::Lib> |
443 | work with inherently broken event loops such as L<Event> or L<Event::Lib> |
446 | (and not with L<POE> currently, as POE does its own workaround with |
444 | (and not with L<POE> currently). For those, you just have to suffer the |
447 | one-second latency). For those, you just have to suffer the delays. |
445 | delays. |
448 | |
446 | |
449 | =head2 CHILD PROCESS WATCHERS |
447 | =head2 CHILD PROCESS WATCHERS |
450 | |
448 | |
451 | $w = AnyEvent->child (pid => <process id>, cb => <callback>); |
449 | $w = AnyEvent->child (pid => <process id>, cb => <callback>); |
452 | |
450 | |
… | |
… | |
1225 | |
1223 | |
1226 | package AnyEvent; |
1224 | package AnyEvent; |
1227 | |
1225 | |
1228 | # basically a tuned-down version of common::sense |
1226 | # basically a tuned-down version of common::sense |
1229 | sub common_sense { |
1227 | sub common_sense { |
1230 | # from common:.sense 3.4 |
1228 | # from common:.sense 3.5 |
|
|
1229 | local $^W; |
1231 | ${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf0\x0f\xc0\xf0\xfc\x33\x00"; |
1230 | ${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf0\x0f\xc0\xf0\xfc\x33\x00"; |
1232 | # use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl) |
1231 | # use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl) |
1233 | $^H |= 0x00000600; |
1232 | $^H |= 0x00000600; |
1234 | } |
1233 | } |
1235 | |
1234 | |
1236 | BEGIN { AnyEvent::common_sense } |
1235 | BEGIN { AnyEvent::common_sense } |
1237 | |
1236 | |
1238 | use Carp (); |
1237 | use Carp (); |
1239 | |
1238 | |
1240 | our $VERSION = '6.02'; |
1239 | our $VERSION = '7.03'; |
1241 | our $MODEL; |
1240 | our $MODEL; |
1242 | our @ISA; |
1241 | our @ISA; |
1243 | our @REGISTRY; |
1242 | our @REGISTRY; |
1244 | our $VERBOSE; |
1243 | our $VERBOSE; |
1245 | our $MAX_SIGNAL_LATENCY = 10; |
|
|
1246 | our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred |
1244 | our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred |
|
|
1245 | our $MAX_SIGNAL_LATENCY = $ENV{PERL_ANYEVENT_MAX_SIGNAL_LATENCY} || 10; # executes after the BEGIN block below (tainting!) |
1247 | |
1246 | |
1248 | BEGIN { |
1247 | BEGIN { |
1249 | require "AnyEvent/constants.pl"; |
1248 | require "AnyEvent/constants.pl"; |
1250 | |
1249 | |
1251 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
1250 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
… | |
… | |
1259 | @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = () |
1258 | @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = () |
1260 | if ${^TAINT}; |
1259 | if ${^TAINT}; |
1261 | |
1260 | |
1262 | # $ENV{PERL_ANYEVENT_xxx} now valid |
1261 | # $ENV{PERL_ANYEVENT_xxx} now valid |
1263 | |
1262 | |
1264 | $VERBOSE = length $ENV{PERL_ANYEVENT_VERBOSE} ? $ENV{PERL_ANYEVENT_VERBOSE}*1 : 3; |
1263 | $VERBOSE = length $ENV{PERL_ANYEVENT_VERBOSE} ? $ENV{PERL_ANYEVENT_VERBOSE}*1 : 4; |
1265 | |
1264 | |
1266 | my $idx; |
1265 | my $idx; |
1267 | $PROTOCOL{$_} = ++$idx |
1266 | $PROTOCOL{$_} = ++$idx |
1268 | for reverse split /\s*,\s*/, |
1267 | for reverse split /\s*,\s*/, |
1269 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1268 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
… | |
… | |
1303 | () |
1302 | () |
1304 | } |
1303 | } |
1305 | |
1304 | |
1306 | sub log($$;@) { |
1305 | sub log($$;@) { |
1307 | # only load the big bloated module when we actually are about to log something |
1306 | # only load the big bloated module when we actually are about to log something |
1308 | if ($_[0] <= $VERBOSE) { # also catches non-numeric levels(!) |
1307 | if ($_[0] <= ($VERBOSE || 1)) { # also catches non-numeric levels(!) and fatal |
1309 | require AnyEvent::Log; |
1308 | local ($!, $@); |
|
|
1309 | require AnyEvent::Log; # among other things, sets $VERBOSE to 9 |
1310 | # AnyEvent::Log overwrites this function |
1310 | # AnyEvent::Log overwrites this function |
1311 | goto &log; |
1311 | goto &log; |
1312 | } |
1312 | } |
1313 | |
1313 | |
1314 | 0 # not logged |
1314 | 0 # not logged |
1315 | } |
1315 | } |
1316 | |
1316 | |
|
|
1317 | sub _logger($;$) { |
|
|
1318 | my ($level, $renabled) = @_; |
|
|
1319 | |
|
|
1320 | $$renabled = $level <= $VERBOSE; |
|
|
1321 | |
|
|
1322 | my $logger = [(caller)[0], $level, $renabled]; |
|
|
1323 | |
|
|
1324 | $AnyEvent::Log::LOGGER{$logger+0} = $logger; |
|
|
1325 | |
|
|
1326 | # return unless defined wantarray; |
|
|
1327 | # |
|
|
1328 | # require AnyEvent::Util; |
|
|
1329 | # my $guard = AnyEvent::Util::guard (sub { |
|
|
1330 | # # "clean up" |
|
|
1331 | # delete $LOGGER{$logger+0}; |
|
|
1332 | # }); |
|
|
1333 | # |
|
|
1334 | # sub { |
|
|
1335 | # return 0 unless $$renabled; |
|
|
1336 | # |
|
|
1337 | # $guard if 0; # keep guard alive, but don't cause runtime overhead |
|
|
1338 | # require AnyEvent::Log unless $AnyEvent::Log::VERSION; |
|
|
1339 | # package AnyEvent::Log; |
|
|
1340 | # _log ($logger->[0], $level, @_) # logger->[0] has been converted at load time |
|
|
1341 | # } |
|
|
1342 | } |
|
|
1343 | |
1317 | if (length $ENV{PERL_ANYEVENT_LOG}) { |
1344 | if (length $ENV{PERL_ANYEVENT_LOG}) { |
1318 | require AnyEvent::Log; # AnyEvent::Log does the thing for us |
1345 | require AnyEvent::Log; # AnyEvent::Log does the thing for us |
1319 | } |
1346 | } |
1320 | |
1347 | |
1321 | our @models = ( |
1348 | our @models = ( |
1322 | [EV:: => AnyEvent::Impl::EV:: , 1], |
1349 | [EV:: => AnyEvent::Impl::EV::], |
1323 | [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1], |
1350 | [AnyEvent::Loop:: => AnyEvent::Impl::Perl::], |
1324 | # everything below here will not (normally) be autoprobed |
1351 | # everything below here will not (normally) be autoprobed |
1325 | # as the pure perl backend should work everywhere |
1352 | # as the pure perl backend should work everywhere |
1326 | # and is usually faster |
1353 | # and is usually faster |
|
|
1354 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package, so msut be near the top |
1327 | [Event:: => AnyEvent::Impl::Event::, 1], |
1355 | [Event:: => AnyEvent::Impl::Event::], # slow, stable |
1328 | [Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers |
1356 | [Glib:: => AnyEvent::Impl::Glib::], # becomes extremely slow with many watchers |
|
|
1357 | # everything below here should not be autoloaded |
1329 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1358 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1330 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package |
|
|
1331 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1359 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1332 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1360 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1333 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1361 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1334 | [Wx:: => AnyEvent::Impl::POE::], |
1362 | [Wx:: => AnyEvent::Impl::POE::], |
1335 | [Prima:: => AnyEvent::Impl::POE::], |
1363 | [Prima:: => AnyEvent::Impl::POE::], |
… | |
… | |
1364 | our @methods = qw(io timer time now now_update signal child idle condvar); |
1392 | our @methods = qw(io timer time now now_update signal child idle condvar); |
1365 | |
1393 | |
1366 | sub detect() { |
1394 | sub detect() { |
1367 | return $MODEL if $MODEL; # some programs keep references to detect |
1395 | return $MODEL if $MODEL; # some programs keep references to detect |
1368 | |
1396 | |
|
|
1397 | # IO::Async::Loop::AnyEvent is extremely evil, refuse to work with it |
|
|
1398 | # the author knows about the problems and what it does to AnyEvent as a whole |
|
|
1399 | # (and the ability of others to use AnyEvent), but simply wants to abuse AnyEvent |
|
|
1400 | # anyway. |
|
|
1401 | AnyEvent::log fatal => "IO::Async::Loop::AnyEvent detected - that module is broken by\n" |
|
|
1402 | . "design, abuses internals and breaks AnyEvent - will not continue." |
|
|
1403 | if exists $INC{"IO/Async/Loop/AnyEvent.pm"}; |
|
|
1404 | |
1369 | local $!; # for good measure |
1405 | local $!; # for good measure |
1370 | local $SIG{__DIE__}; # we use eval |
1406 | local $SIG{__DIE__}; # we use eval |
1371 | |
1407 | |
1372 | # free some memory |
1408 | # free some memory |
1373 | *detect = sub () { $MODEL }; |
1409 | *detect = sub () { $MODEL }; |
… | |
… | |
1381 | |
1417 | |
1382 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) { |
1418 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) { |
1383 | my $model = $1; |
1419 | my $model = $1; |
1384 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1420 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1385 | if (eval "require $model") { |
1421 | if (eval "require $model") { |
1386 | AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."; |
1422 | AnyEvent::log 7 => "Loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."; |
1387 | $MODEL = $model; |
1423 | $MODEL = $model; |
1388 | } else { |
1424 | } else { |
1389 | AnyEvent::log 5 => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@"; |
1425 | AnyEvent::log 4 => "Unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@"; |
1390 | } |
1426 | } |
1391 | } |
1427 | } |
1392 | |
1428 | |
1393 | # check for already loaded models |
1429 | # check for already loaded models |
1394 | unless ($MODEL) { |
1430 | unless ($MODEL) { |
1395 | for (@REGISTRY, @models) { |
1431 | for (@REGISTRY, @models) { |
1396 | my ($package, $model) = @$_; |
1432 | my ($package, $model) = @$_; |
1397 | if (${"$package\::VERSION"} > 0) { |
1433 | if (${"$package\::VERSION"} > 0) { |
1398 | if (eval "require $model") { |
1434 | if (eval "require $model") { |
1399 | AnyEvent::log 7 => "autodetected model '$model', using it."; |
1435 | AnyEvent::log 7 => "Autodetected model '$model', using it."; |
|
|
1436 | $MODEL = $model; |
|
|
1437 | last; |
|
|
1438 | } else { |
|
|
1439 | AnyEvent::log 8 => "Detected event loop $package, but cannot load '$model', skipping: $@"; |
|
|
1440 | } |
|
|
1441 | } |
|
|
1442 | } |
|
|
1443 | |
|
|
1444 | unless ($MODEL) { |
|
|
1445 | # try to autoload a model |
|
|
1446 | for (@REGISTRY, @models) { |
|
|
1447 | my ($package, $model) = @$_; |
|
|
1448 | if ( |
|
|
1449 | eval "require $package" |
|
|
1450 | and ${"$package\::VERSION"} > 0 |
|
|
1451 | and eval "require $model" |
|
|
1452 | ) { |
|
|
1453 | AnyEvent::log 7 => "Autoloaded model '$model', using it."; |
1400 | $MODEL = $model; |
1454 | $MODEL = $model; |
1401 | last; |
1455 | last; |
1402 | } |
1456 | } |
1403 | } |
1457 | } |
1404 | } |
|
|
1405 | |
|
|
1406 | unless ($MODEL) { |
|
|
1407 | # try to autoload a model |
|
|
1408 | for (@REGISTRY, @models) { |
|
|
1409 | my ($package, $model, $autoload) = @$_; |
|
|
1410 | if ( |
|
|
1411 | $autoload |
|
|
1412 | and eval "require $package" |
|
|
1413 | and ${"$package\::VERSION"} > 0 |
|
|
1414 | and eval "require $model" |
|
|
1415 | ) { |
|
|
1416 | AnyEvent::log 7 => "autoloaded model '$model', using it."; |
|
|
1417 | $MODEL = $model; |
|
|
1418 | last; |
|
|
1419 | } |
|
|
1420 | } |
|
|
1421 | |
1458 | |
1422 | $MODEL |
1459 | $MODEL |
1423 | or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?"; |
1460 | or AnyEvent::log fatal => "Backend autodetection failed - did you properly install AnyEvent?"; |
1424 | } |
1461 | } |
1425 | } |
1462 | } |
1426 | |
1463 | |
1427 | # free memory only needed for probing |
1464 | # free memory only needed for probing |
1428 | undef @models; |
1465 | undef @models; |
… | |
… | |
1575 | # probe for availability of Time::HiRes |
1612 | # probe for availability of Time::HiRes |
1576 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1613 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1577 | *time = sub { Time::HiRes::time () }; |
1614 | *time = sub { Time::HiRes::time () }; |
1578 | *AE::time = \& Time::HiRes::time ; |
1615 | *AE::time = \& Time::HiRes::time ; |
1579 | *now = \&time; |
1616 | *now = \&time; |
1580 | AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."; |
1617 | AnyEvent::log 8 => "using Time::HiRes for sub-second timing accuracy."; |
1581 | # if (eval "use POSIX (); (POSIX::times())... |
1618 | # if (eval "use POSIX (); (POSIX::times())... |
1582 | } else { |
1619 | } else { |
1583 | *time = sub { CORE::time }; |
1620 | *time = sub { CORE::time }; |
1584 | *AE::time = sub (){ CORE::time }; |
1621 | *AE::time = sub (){ CORE::time }; |
1585 | *now = \&time; |
1622 | *now = \&time; |
1586 | AnyEvent::log 3 => "using built-in time(), WARNING, no sub-second resolution!"; |
1623 | AnyEvent::log 3 => "Using built-in time(), no sub-second resolution!"; |
1587 | } |
1624 | } |
1588 | }; |
1625 | }; |
1589 | die if $@; |
1626 | die if $@; |
1590 | |
1627 | |
1591 | &time |
1628 | &time |
… | |
… | |
1685 | |
1722 | |
1686 | sub signal { |
1723 | sub signal { |
1687 | eval q{ # poor man's autoloading {} |
1724 | eval q{ # poor man's autoloading {} |
1688 | # probe for availability of Async::Interrupt |
1725 | # probe for availability of Async::Interrupt |
1689 | if (_have_async_interrupt) { |
1726 | if (_have_async_interrupt) { |
1690 | AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."; |
1727 | AnyEvent::log 8 => "Using Async::Interrupt for race-free signal handling."; |
1691 | |
1728 | |
1692 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1729 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1693 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1730 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1694 | |
1731 | |
1695 | } else { |
1732 | } else { |
1696 | AnyEvent::log 8 => "using emulated perl signal handling with latency timer."; |
1733 | AnyEvent::log 8 => "Using emulated perl signal handling with latency timer."; |
1697 | |
1734 | |
1698 | if (AnyEvent::WIN32) { |
1735 | if (AnyEvent::WIN32) { |
1699 | require AnyEvent::Util; |
1736 | require AnyEvent::Util; |
1700 | |
1737 | |
1701 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
1738 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
… | |
… | |
2037 | |
2074 | |
2038 | =over 4 |
2075 | =over 4 |
2039 | |
2076 | |
2040 | =item C<PERL_ANYEVENT_VERBOSE> |
2077 | =item C<PERL_ANYEVENT_VERBOSE> |
2041 | |
2078 | |
2042 | By default, AnyEvent will only log messages with loglevel C<3> |
2079 | By default, AnyEvent will log messages with loglevel C<4> (C<error>) or |
2043 | (C<critical>) or higher (see L<AnyEvent::Log>). You can set this |
2080 | higher (see L<AnyEvent::Log>). You can set this environment variable to a |
2044 | environment variable to a numerical loglevel to make AnyEvent more (or |
2081 | numerical loglevel to make AnyEvent more (or less) talkative. |
2045 | less) talkative. |
|
|
2046 | |
2082 | |
2047 | If you want to do more than just set the global logging level |
2083 | If you want to do more than just set the global logging level |
2048 | you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more |
2084 | you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more |
2049 | complex specifications. |
2085 | complex specifications. |
2050 | |
2086 | |
2051 | When set to C<0> (C<off>), then no messages whatsoever will be logged with |
2087 | When set to C<0> (C<off>), then no messages whatsoever will be logged with |
2052 | the default logging settings. |
2088 | everything else at defaults. |
2053 | |
2089 | |
2054 | When set to C<5> or higher (C<warn>), causes AnyEvent to warn about |
2090 | When set to C<5> or higher (C<warn>), AnyEvent warns about unexpected |
2055 | unexpected conditions, such as not being able to load the event model |
2091 | conditions, such as not being able to load the event model specified by |
2056 | specified by C<PERL_ANYEVENT_MODEL>, or a guard callback throwing an |
2092 | C<PERL_ANYEVENT_MODEL>, or a guard callback throwing an exception - this |
2057 | exception - this is the minimum recommended level. |
2093 | is the minimum recommended level for use during development. |
2058 | |
2094 | |
2059 | When set to C<7> or higher (info), cause AnyEvent to report which event model it |
2095 | When set to C<7> or higher (info), AnyEvent reports which event model it |
2060 | chooses. |
2096 | chooses. |
2061 | |
2097 | |
2062 | When set to C<8> or higher (debug), then AnyEvent will report extra information on |
2098 | When set to C<8> or higher (debug), then AnyEvent will report extra |
2063 | which optional modules it loads and how it implements certain features. |
2099 | information on which optional modules it loads and how it implements |
|
|
2100 | certain features. |
2064 | |
2101 | |
2065 | =item C<PERL_ANYEVENT_LOG> |
2102 | =item C<PERL_ANYEVENT_LOG> |
2066 | |
2103 | |
2067 | Accepts rather complex logging specifications. For example, you could log |
2104 | Accepts rather complex logging specifications. For example, you could log |
2068 | all C<debug> messages of some module to stderr, warnings and above to |
2105 | all C<debug> messages of some module to stderr, warnings and above to |
… | |
… | |
2075 | This variable is evaluated when AnyEvent (or L<AnyEvent::Log>) is loaded, |
2112 | This variable is evaluated when AnyEvent (or L<AnyEvent::Log>) is loaded, |
2076 | so will take effect even before AnyEvent has initialised itself. |
2113 | so will take effect even before AnyEvent has initialised itself. |
2077 | |
2114 | |
2078 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
2115 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
2079 | module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only |
2116 | module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only |
2080 | using the latter saves a few hundred kB of memory until the first message |
2117 | using the latter saves a few hundred kB of memory unless a module |
2081 | is being logged. |
2118 | explicitly needs the extra features of AnyEvent::Log. |
2082 | |
2119 | |
2083 | =item C<PERL_ANYEVENT_STRICT> |
2120 | =item C<PERL_ANYEVENT_STRICT> |
2084 | |
2121 | |
2085 | AnyEvent does not do much argument checking by default, as thorough |
2122 | AnyEvent does not do much argument checking by default, as thorough |
2086 | argument checking is very costly. Setting this variable to a true value |
2123 | argument checking is very costly. Setting this variable to a true value |
… | |
… | |
2141 | For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you |
2178 | For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you |
2142 | could start your program like this: |
2179 | could start your program like this: |
2143 | |
2180 | |
2144 | PERL_ANYEVENT_MODEL=Perl perl ... |
2181 | PERL_ANYEVENT_MODEL=Perl perl ... |
2145 | |
2182 | |
|
|
2183 | =item C<PERL_ANYEVENT_IO_MODEL> |
|
|
2184 | |
|
|
2185 | The current file I/O model - see L<AnyEvent::IO> for more info. |
|
|
2186 | |
|
|
2187 | At the moment, only C<Perl> (small, pure-perl, synchronous) and |
|
|
2188 | C<IOAIO> (truly asynchronous) are supported. The default is C<IOAIO> if |
|
|
2189 | L<AnyEvent::AIO> can be loaded, otherwise it is C<Perl>. |
|
|
2190 | |
2146 | =item C<PERL_ANYEVENT_PROTOCOLS> |
2191 | =item C<PERL_ANYEVENT_PROTOCOLS> |
2147 | |
2192 | |
2148 | Used by both L<AnyEvent::DNS> and L<AnyEvent::Socket> to determine preferences |
2193 | Used by both L<AnyEvent::DNS> and L<AnyEvent::Socket> to determine preferences |
2149 | for IPv4 or IPv6. The default is unspecified (and might change, or be the result |
2194 | for IPv4 or IPv6. The default is unspecified (and might change, or be the result |
2150 | of auto probing). |
2195 | of auto probing). |
… | |
… | |
2188 | =item C<PERL_ANYEVENT_MAX_OUTSTANDING_DNS> |
2233 | =item C<PERL_ANYEVENT_MAX_OUTSTANDING_DNS> |
2189 | |
2234 | |
2190 | The default value for the C<max_outstanding> parameter for the default DNS |
2235 | The default value for the C<max_outstanding> parameter for the default DNS |
2191 | resolver - this is the maximum number of parallel DNS requests that are |
2236 | resolver - this is the maximum number of parallel DNS requests that are |
2192 | sent to the DNS server. |
2237 | sent to the DNS server. |
|
|
2238 | |
|
|
2239 | =item C<PERL_ANYEVENT_MAX_SIGNAL_LATENCY> |
|
|
2240 | |
|
|
2241 | Perl has inherently racy signal handling (you can basically choose between |
|
|
2242 | losing signals and memory corruption) - pure perl event loops (including |
|
|
2243 | C<AnyEvent::Loop>, when C<Async::Interrupt> isn't available) therefore |
|
|
2244 | have to poll regularly to avoid losing signals. |
|
|
2245 | |
|
|
2246 | Some event loops are racy, but don't poll regularly, and some event loops |
|
|
2247 | are written in C but are still racy. For those event loops, AnyEvent |
|
|
2248 | installs a timer that regularly wakes up the event loop. |
|
|
2249 | |
|
|
2250 | By default, the interval for this timer is C<10> seconds, but you can |
|
|
2251 | override this delay with this environment variable (or by setting |
|
|
2252 | the C<$AnyEvent::MAX_SIGNAL_LATENCY> variable before creating signal |
|
|
2253 | watchers). |
|
|
2254 | |
|
|
2255 | Lower values increase CPU (and energy) usage, higher values can introduce |
|
|
2256 | long delays when reaping children or waiting for signals. |
|
|
2257 | |
|
|
2258 | The L<AnyEvent::Async> module, if available, will be used to avoid this |
|
|
2259 | polling (with most event loops). |
2193 | |
2260 | |
2194 | =item C<PERL_ANYEVENT_RESOLV_CONF> |
2261 | =item C<PERL_ANYEVENT_RESOLV_CONF> |
2195 | |
2262 | |
2196 | The absolute path to a F<resolv.conf>-style file to use instead of |
2263 | The absolute path to a F<resolv.conf>-style file to use instead of |
2197 | F</etc/resolv.conf> (or the OS-specific configuration) in the default |
2264 | F</etc/resolv.conf> (or the OS-specific configuration) in the default |
… | |
… | |
2946 | L<AnyEvent::Impl::FLTK>. |
3013 | L<AnyEvent::Impl::FLTK>. |
2947 | |
3014 | |
2948 | Non-blocking handles, pipes, stream sockets, TCP clients and |
3015 | Non-blocking handles, pipes, stream sockets, TCP clients and |
2949 | servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. |
3016 | servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. |
2950 | |
3017 | |
|
|
3018 | Asynchronous File I/O: L<AnyEvent::IO>. |
|
|
3019 | |
2951 | Asynchronous DNS: L<AnyEvent::DNS>. |
3020 | Asynchronous DNS: L<AnyEvent::DNS>. |
2952 | |
3021 | |
2953 | Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>. |
3022 | Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>. |
2954 | |
3023 | |
2955 | Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>, |
3024 | Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>, |
… | |
… | |
2957 | |
3026 | |
2958 | |
3027 | |
2959 | =head1 AUTHOR |
3028 | =head1 AUTHOR |
2960 | |
3029 | |
2961 | Marc Lehmann <schmorp@schmorp.de> |
3030 | Marc Lehmann <schmorp@schmorp.de> |
2962 | http://home.schmorp.de/ |
3031 | http://anyevent.schmorp.de |
2963 | |
3032 | |
2964 | =cut |
3033 | =cut |
2965 | |
3034 | |
2966 | 1 |
3035 | 1 |
2967 | |
3036 | |