… | |
… | |
271 | |
271 | |
272 | Example 2: fire an event after 0.5 seconds, then roughly every second. |
272 | Example 2: fire an event after 0.5 seconds, then roughly every second. |
273 | |
273 | |
274 | my $w = AnyEvent->timer (after => 0.5, interval => 1, cb => sub { |
274 | my $w = AnyEvent->timer (after => 0.5, interval => 1, cb => sub { |
275 | warn "timeout\n"; |
275 | warn "timeout\n"; |
276 | }; |
276 | }); |
277 | |
277 | |
278 | =head3 TIMING ISSUES |
278 | =head3 TIMING ISSUES |
279 | |
279 | |
280 | There are two ways to handle timers: based on real time (relative, "fire |
280 | There are two ways to handle timers: based on real time (relative, "fire |
281 | in 10 seconds") and based on wallclock time (absolute, "fire at 12 |
281 | in 10 seconds") and based on wallclock time (absolute, "fire at 12 |
… | |
… | |
433 | as you cannot do race-free signal handling in perl, requiring |
433 | as you cannot do race-free signal handling in perl, requiring |
434 | C libraries for this. AnyEvent will try to do its best, which |
434 | C libraries for this. AnyEvent will try to do its best, which |
435 | means in some cases, signals will be delayed. The maximum time |
435 | means in some cases, signals will be delayed. The maximum time |
436 | a signal might be delayed is 10 seconds by default, but can |
436 | a signal might be delayed is 10 seconds by default, but can |
437 | be overriden via C<$ENV{PERL_ANYEVENT_MAX_SIGNAL_LATENCY}> or |
437 | be overriden via C<$ENV{PERL_ANYEVENT_MAX_SIGNAL_LATENCY}> or |
438 | C<$AnyEvent::MAX_SIGNAL_LATENCY> - see the Ö<ENVIRONMENT VARIABLES> |
438 | C<$AnyEvent::MAX_SIGNAL_LATENCY> - see the L<ENVIRONMENT VARIABLES> |
439 | section for details. |
439 | section for details. |
440 | |
440 | |
441 | All these problems can be avoided by installing the optional |
441 | All these problems can be avoided by installing the optional |
442 | 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 |
443 | 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> |
… | |
… | |
763 | }; |
763 | }; |
764 | } |
764 | } |
765 | |
765 | |
766 | $cv->end; |
766 | $cv->end; |
767 | |
767 | |
|
|
768 | ... |
|
|
769 | |
|
|
770 | my $results = $cv->recv; |
|
|
771 | |
768 | This code fragment supposedly pings a number of hosts and calls |
772 | This code fragment supposedly pings a number of hosts and calls |
769 | C<send> after results for all then have have been gathered - in any |
773 | C<send> after results for all then have have been gathered - in any |
770 | order. To achieve this, the code issues a call to C<begin> when it starts |
774 | order. To achieve this, the code issues a call to C<begin> when it starts |
771 | each ping request and calls C<end> when it has received some result for |
775 | each ping request and calls C<end> when it has received some result for |
772 | it. Since C<begin> and C<end> only maintain a counter, the order in which |
776 | it. Since C<begin> and C<end> only maintain a counter, the order in which |
… | |
… | |
807 | |
811 | |
808 | In list context, all parameters passed to C<send> will be returned, |
812 | In list context, all parameters passed to C<send> will be returned, |
809 | in scalar context only the first one will be returned. |
813 | in scalar context only the first one will be returned. |
810 | |
814 | |
811 | Note that doing a blocking wait in a callback is not supported by any |
815 | Note that doing a blocking wait in a callback is not supported by any |
812 | event loop, that is, recursive invocation of a blocking C<< ->recv |
816 | event loop, that is, recursive invocation of a blocking C<< ->recv >> is |
813 | >> is not allowed, and the C<recv> call will C<croak> if such a |
817 | not allowed and the C<recv> call will C<croak> if such a condition is |
814 | condition is detected. This condition can be slightly loosened by using |
818 | detected. This requirement can be dropped by relying on L<Coro::AnyEvent> |
815 | L<Coro::AnyEvent>, which allows you to do a blocking C<< ->recv >> from |
819 | , which allows you to do a blocking C<< ->recv >> from any thread |
816 | any thread that doesn't run the event loop itself. |
820 | that doesn't run the event loop itself. L<Coro::AnyEvent> is loaded |
|
|
821 | automatically when L<Coro> is used with L<AnyEvent>, so code does not need |
|
|
822 | to do anything special to take advantage of that: any code that would |
|
|
823 | normally block your program because it calls C<recv>, be executed in an |
|
|
824 | C<async> thread instead without blocking other threads. |
817 | |
825 | |
818 | Not all event models support a blocking wait - some die in that case |
826 | Not all event models support a blocking wait - some die in that case |
819 | (programs might want to do that to stay interactive), so I<if you are |
827 | (programs might want to do that to stay interactive), so I<if you are |
820 | using this from a module, never require a blocking wait>. Instead, let the |
828 | using this from a module, never require a blocking wait>. Instead, let the |
821 | caller decide whether the call will block or not (for example, by coupling |
829 | caller decide whether the call will block or not (for example, by coupling |
… | |
… | |
1139 | a longer non-exhaustive list), and the list is heavily biased towards |
1147 | a longer non-exhaustive list), and the list is heavily biased towards |
1140 | modules of the AnyEvent author himself :) |
1148 | modules of the AnyEvent author himself :) |
1141 | |
1149 | |
1142 | =over 4 |
1150 | =over 4 |
1143 | |
1151 | |
1144 | =item L<AnyEvent::Util> |
1152 | =item L<AnyEvent::Util> (part of the AnyEvent distribution) |
1145 | |
1153 | |
1146 | Contains various utility functions that replace often-used blocking |
1154 | Contains various utility functions that replace often-used blocking |
1147 | functions such as C<inet_aton> with event/callback-based versions. |
1155 | functions such as C<inet_aton> with event/callback-based versions. |
1148 | |
1156 | |
1149 | =item L<AnyEvent::Socket> |
1157 | =item L<AnyEvent::Socket> (part of the AnyEvent distribution) |
1150 | |
1158 | |
1151 | Provides various utility functions for (internet protocol) sockets, |
1159 | Provides various utility functions for (internet protocol) sockets, |
1152 | addresses and name resolution. Also functions to create non-blocking tcp |
1160 | addresses and name resolution. Also functions to create non-blocking tcp |
1153 | connections or tcp servers, with IPv6 and SRV record support and more. |
1161 | connections or tcp servers, with IPv6 and SRV record support and more. |
1154 | |
1162 | |
1155 | =item L<AnyEvent::Handle> |
1163 | =item L<AnyEvent::Handle> (part of the AnyEvent distribution) |
1156 | |
1164 | |
1157 | Provide read and write buffers, manages watchers for reads and writes, |
1165 | Provide read and write buffers, manages watchers for reads and writes, |
1158 | supports raw and formatted I/O, I/O queued and fully transparent and |
1166 | supports raw and formatted I/O, I/O queued and fully transparent and |
1159 | non-blocking SSL/TLS (via L<AnyEvent::TLS>). |
1167 | non-blocking SSL/TLS (via L<AnyEvent::TLS>). |
1160 | |
1168 | |
1161 | =item L<AnyEvent::DNS> |
1169 | =item L<AnyEvent::DNS> (part of the AnyEvent distribution) |
1162 | |
1170 | |
1163 | Provides rich asynchronous DNS resolver capabilities. |
1171 | Provides rich asynchronous DNS resolver capabilities. |
1164 | |
1172 | |
1165 | =item L<AnyEvent::HTTP>, L<AnyEvent::IRC>, L<AnyEvent::XMPP>, L<AnyEvent::GPSD>, L<AnyEvent::IGS>, L<AnyEvent::FCP> |
1173 | =item L<AnyEvent::HTTP>, L<AnyEvent::IRC>, L<AnyEvent::XMPP>, L<AnyEvent::GPSD>, L<AnyEvent::IGS>, L<AnyEvent::FCP> |
1166 | |
1174 | |
1167 | Implement event-based interfaces to the protocols of the same name (for |
1175 | Implement event-based interfaces to the protocols of the same name (for |
1168 | the curious, IGS is the International Go Server and FCP is the Freenet |
1176 | the curious, IGS is the International Go Server and FCP is the Freenet |
1169 | Client Protocol). |
1177 | Client Protocol). |
1170 | |
1178 | |
1171 | =item L<AnyEvent::AIO> |
1179 | =item L<AnyEvent::AIO> (part of the AnyEvent distribution) |
1172 | |
1180 | |
1173 | Truly asynchronous (as opposed to non-blocking) I/O, should be in the |
1181 | Truly asynchronous (as opposed to non-blocking) I/O, should be in the |
1174 | toolbox of every event programmer. AnyEvent::AIO transparently fuses |
1182 | toolbox of every event programmer. AnyEvent::AIO transparently fuses |
1175 | L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based |
1183 | L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based |
1176 | file I/O, and much more. |
1184 | file I/O, and much more. |
… | |
… | |
1221 | |
1229 | |
1222 | =cut |
1230 | =cut |
1223 | |
1231 | |
1224 | package AnyEvent; |
1232 | package AnyEvent; |
1225 | |
1233 | |
1226 | # basically a tuned-down version of common::sense |
1234 | BEGIN { |
1227 | sub common_sense { |
1235 | require "AnyEvent/constants.pl"; |
1228 | # from common:.sense 3.4 |
1236 | &AnyEvent::common_sense; |
1229 | ${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf0\x0f\xc0\xf0\xfc\x33\x00"; |
|
|
1230 | # use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl) |
|
|
1231 | $^H |= 0x00000600; |
|
|
1232 | } |
1237 | } |
1233 | |
|
|
1234 | BEGIN { AnyEvent::common_sense } |
|
|
1235 | |
1238 | |
1236 | use Carp (); |
1239 | use Carp (); |
1237 | |
1240 | |
1238 | our $VERSION = '6.1'; |
1241 | our $VERSION = '7.05'; |
1239 | our $MODEL; |
1242 | our $MODEL; |
1240 | our @ISA; |
1243 | our @ISA; |
1241 | our @REGISTRY; |
1244 | our @REGISTRY; |
1242 | our $VERBOSE; |
1245 | our $VERBOSE; |
1243 | our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred |
1246 | our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred |
1244 | our $MAX_SIGNAL_LATENCY = $ENV{PERL_ANYEVENT_MAX_SIGNAL_LATENCY} || 10; # executes after the BEGIN block below (tainting!) |
1247 | our $MAX_SIGNAL_LATENCY = $ENV{PERL_ANYEVENT_MAX_SIGNAL_LATENCY} || 10; # executes after the BEGIN block below (tainting!) |
1245 | |
1248 | |
1246 | BEGIN { |
1249 | BEGIN { |
1247 | require "AnyEvent/constants.pl"; |
|
|
1248 | |
|
|
1249 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
1250 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
1250 | |
1251 | |
1251 | delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} |
1252 | delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} |
1252 | if ${^TAINT}; |
1253 | if ${^TAINT}; |
1253 | |
1254 | |
… | |
… | |
1395 | |
1396 | |
1396 | # IO::Async::Loop::AnyEvent is extremely evil, refuse to work with it |
1397 | # IO::Async::Loop::AnyEvent is extremely evil, refuse to work with it |
1397 | # the author knows about the problems and what it does to AnyEvent as a whole |
1398 | # the author knows about the problems and what it does to AnyEvent as a whole |
1398 | # (and the ability of others to use AnyEvent), but simply wants to abuse AnyEvent |
1399 | # (and the ability of others to use AnyEvent), but simply wants to abuse AnyEvent |
1399 | # anyway. |
1400 | # anyway. |
1400 | AnyEvent::log fatal => "AnyEvent: IO::Async::Loop::AnyEvent detected - this module is broken by design,\n" |
1401 | AnyEvent::log fatal => "IO::Async::Loop::AnyEvent detected - that module is broken by\n" |
1401 | . "abuses internals and breaks AnyEvent, will not continue." |
1402 | . "design, abuses internals and breaks AnyEvent - will not continue." |
1402 | if exists $INC{"IO/Async/Loop/AnyEvent.pm"}; |
1403 | if exists $INC{"IO/Async/Loop/AnyEvent.pm"}; |
1403 | |
1404 | |
1404 | local $!; # for good measure |
1405 | local $!; # for good measure |
1405 | local $SIG{__DIE__}; # we use eval |
1406 | local $SIG{__DIE__}; # we use eval |
1406 | |
1407 | |
… | |
… | |
1416 | |
1417 | |
1417 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) { |
1418 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) { |
1418 | my $model = $1; |
1419 | my $model = $1; |
1419 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1420 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1420 | if (eval "require $model") { |
1421 | if (eval "require $model") { |
1421 | AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."; |
1422 | AnyEvent::log 7 => "Loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."; |
1422 | $MODEL = $model; |
1423 | $MODEL = $model; |
1423 | } else { |
1424 | } else { |
1424 | AnyEvent::log 4 => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@"; |
1425 | AnyEvent::log 4 => "Unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@"; |
1425 | } |
1426 | } |
1426 | } |
1427 | } |
1427 | |
1428 | |
1428 | # check for already loaded models |
1429 | # check for already loaded models |
1429 | unless ($MODEL) { |
1430 | unless ($MODEL) { |
1430 | for (@REGISTRY, @models) { |
1431 | for (@REGISTRY, @models) { |
1431 | my ($package, $model) = @$_; |
1432 | my ($package, $model) = @$_; |
1432 | if (${"$package\::VERSION"} > 0) { |
1433 | if (${"$package\::VERSION"} > 0) { |
1433 | if (eval "require $model") { |
1434 | if (eval "require $model") { |
1434 | AnyEvent::log 7 => "autodetected model '$model', using it."; |
1435 | AnyEvent::log 7 => "Autodetected model '$model', using it."; |
1435 | $MODEL = $model; |
1436 | $MODEL = $model; |
1436 | last; |
1437 | last; |
|
|
1438 | } else { |
|
|
1439 | AnyEvent::log 8 => "Detected event loop $package, but cannot load '$model', skipping: $@"; |
1437 | } |
1440 | } |
1438 | } |
1441 | } |
1439 | } |
1442 | } |
1440 | |
1443 | |
1441 | unless ($MODEL) { |
1444 | unless ($MODEL) { |
… | |
… | |
1445 | if ( |
1448 | if ( |
1446 | eval "require $package" |
1449 | eval "require $package" |
1447 | and ${"$package\::VERSION"} > 0 |
1450 | and ${"$package\::VERSION"} > 0 |
1448 | and eval "require $model" |
1451 | and eval "require $model" |
1449 | ) { |
1452 | ) { |
1450 | AnyEvent::log 7 => "autoloaded model '$model', using it."; |
1453 | AnyEvent::log 7 => "Autoloaded model '$model', using it."; |
1451 | $MODEL = $model; |
1454 | $MODEL = $model; |
1452 | last; |
1455 | last; |
1453 | } |
1456 | } |
1454 | } |
1457 | } |
1455 | |
1458 | |
1456 | $MODEL |
1459 | $MODEL |
1457 | or AnyEvent::log fatal => "AnyEvent: backend autodetection failed - did you properly install AnyEvent?"; |
1460 | or AnyEvent::log fatal => "Backend autodetection failed - did you properly install AnyEvent?"; |
1458 | } |
1461 | } |
1459 | } |
1462 | } |
1460 | |
1463 | |
1461 | # free memory only needed for probing |
1464 | # free memory only needed for probing |
1462 | undef @models; |
1465 | undef @models; |
… | |
… | |
1609 | # probe for availability of Time::HiRes |
1612 | # probe for availability of Time::HiRes |
1610 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1613 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1611 | *time = sub { Time::HiRes::time () }; |
1614 | *time = sub { Time::HiRes::time () }; |
1612 | *AE::time = \& Time::HiRes::time ; |
1615 | *AE::time = \& Time::HiRes::time ; |
1613 | *now = \&time; |
1616 | *now = \&time; |
1614 | AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."; |
1617 | AnyEvent::log 8 => "using Time::HiRes for sub-second timing accuracy."; |
1615 | # if (eval "use POSIX (); (POSIX::times())... |
1618 | # if (eval "use POSIX (); (POSIX::times())... |
1616 | } else { |
1619 | } else { |
1617 | *time = sub { CORE::time }; |
1620 | *time = sub { CORE::time }; |
1618 | *AE::time = sub (){ CORE::time }; |
1621 | *AE::time = sub (){ CORE::time }; |
1619 | *now = \&time; |
1622 | *now = \&time; |
1620 | AnyEvent::log 3 => "using built-in time(), WARNING, no sub-second resolution!"; |
1623 | AnyEvent::log 3 => "Using built-in time(), no sub-second resolution!"; |
1621 | } |
1624 | } |
1622 | }; |
1625 | }; |
1623 | die if $@; |
1626 | die if $@; |
1624 | |
1627 | |
1625 | &time |
1628 | &time |
… | |
… | |
1719 | |
1722 | |
1720 | sub signal { |
1723 | sub signal { |
1721 | eval q{ # poor man's autoloading {} |
1724 | eval q{ # poor man's autoloading {} |
1722 | # probe for availability of Async::Interrupt |
1725 | # probe for availability of Async::Interrupt |
1723 | if (_have_async_interrupt) { |
1726 | if (_have_async_interrupt) { |
1724 | AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."; |
1727 | AnyEvent::log 8 => "Using Async::Interrupt for race-free signal handling."; |
1725 | |
1728 | |
1726 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1729 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1727 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1730 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1728 | |
1731 | |
1729 | } else { |
1732 | } else { |
1730 | AnyEvent::log 8 => "using emulated perl signal handling with latency timer."; |
1733 | AnyEvent::log 8 => "Using emulated perl signal handling with latency timer."; |
1731 | |
1734 | |
1732 | if (AnyEvent::WIN32) { |
1735 | if (AnyEvent::WIN32) { |
1733 | require AnyEvent::Util; |
1736 | require AnyEvent::Util; |
1734 | |
1737 | |
1735 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
1738 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
… | |
… | |
2071 | |
2074 | |
2072 | =over 4 |
2075 | =over 4 |
2073 | |
2076 | |
2074 | =item C<PERL_ANYEVENT_VERBOSE> |
2077 | =item C<PERL_ANYEVENT_VERBOSE> |
2075 | |
2078 | |
2076 | 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 |
2077 | (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 |
2078 | environment variable to a numerical loglevel to make AnyEvent more (or |
2081 | numerical loglevel to make AnyEvent more (or less) talkative. |
2079 | less) talkative. |
|
|
2080 | |
2082 | |
2081 | 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 |
2082 | 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 |
2083 | complex specifications. |
2085 | complex specifications. |
2084 | |
2086 | |
2085 | 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 |
2086 | the default logging settings. |
2088 | everything else at defaults. |
2087 | |
2089 | |
2088 | 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 |
2089 | 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 |
2090 | 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 |
2091 | exception - this is the minimum recommended level. |
2093 | is the minimum recommended level for use during development. |
2092 | |
2094 | |
2093 | 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 |
2094 | chooses. |
2096 | chooses. |
2095 | |
2097 | |
2096 | 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 |
2097 | 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. |
2098 | |
2101 | |
2099 | =item C<PERL_ANYEVENT_LOG> |
2102 | =item C<PERL_ANYEVENT_LOG> |
2100 | |
2103 | |
2101 | Accepts rather complex logging specifications. For example, you could log |
2104 | Accepts rather complex logging specifications. For example, you could log |
2102 | 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 |
… | |
… | |
2109 | 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, |
2110 | so will take effect even before AnyEvent has initialised itself. |
2113 | so will take effect even before AnyEvent has initialised itself. |
2111 | |
2114 | |
2112 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
2115 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
2113 | 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 |
2114 | 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 |
2115 | is being logged. |
2118 | explicitly needs the extra features of AnyEvent::Log. |
2116 | |
2119 | |
2117 | =item C<PERL_ANYEVENT_STRICT> |
2120 | =item C<PERL_ANYEVENT_STRICT> |
2118 | |
2121 | |
2119 | AnyEvent does not do much argument checking by default, as thorough |
2122 | AnyEvent does not do much argument checking by default, as thorough |
2120 | 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 |
… | |
… | |
2174 | |
2177 | |
2175 | 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 |
2176 | could start your program like this: |
2179 | could start your program like this: |
2177 | |
2180 | |
2178 | PERL_ANYEVENT_MODEL=Perl perl ... |
2181 | PERL_ANYEVENT_MODEL=Perl perl ... |
|
|
2182 | |
|
|
2183 | =item C<PERL_ANYEVENT_IO_MODEL> |
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2184 | |
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|
2185 | The current file I/O model - see L<AnyEvent::IO> for more info. |
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2186 | |
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|
2187 | At the moment, only C<Perl> (small, pure-perl, synchronous) and |
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|
2188 | C<IOAIO> (truly asynchronous) are supported. The default is C<IOAIO> if |
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2189 | L<AnyEvent::AIO> can be loaded, otherwise it is C<Perl>. |
2179 | |
2190 | |
2180 | =item C<PERL_ANYEVENT_PROTOCOLS> |
2191 | =item C<PERL_ANYEVENT_PROTOCOLS> |
2181 | |
2192 | |
2182 | 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 |
2183 | 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 |
… | |
… | |
2910 | This module is part of perl since release 5.008. It will be used when the |
2921 | This module is part of perl since release 5.008. It will be used when the |
2911 | chosen event library does not come with a timing source of its own. The |
2922 | chosen event library does not come with a timing source of its own. The |
2912 | pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to |
2923 | pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to |
2913 | try to use a monotonic clock for timing stability. |
2924 | try to use a monotonic clock for timing stability. |
2914 | |
2925 | |
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2926 | =item L<AnyEvent::AIO> (and L<IO::AIO>) |
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2927 | |
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2928 | The default implementation of L<AnyEvent::IO> is to do I/O synchronously, |
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2929 | stopping programs while they access the disk, which is fine for a lot of |
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2930 | programs. |
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2931 | |
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2932 | Installing AnyEvent::AIO (and its IO::AIO dependency) makes it switch to |
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2933 | a true asynchronous implementation, so event processing can continue even |
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|
2934 | while waiting for disk I/O. |
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2935 | |
2915 | =back |
2936 | =back |
2916 | |
2937 | |
2917 | |
2938 | |
2918 | =head1 FORK |
2939 | =head1 FORK |
2919 | |
2940 | |
… | |
… | |
3002 | L<AnyEvent::Impl::FLTK>. |
3023 | L<AnyEvent::Impl::FLTK>. |
3003 | |
3024 | |
3004 | Non-blocking handles, pipes, stream sockets, TCP clients and |
3025 | Non-blocking handles, pipes, stream sockets, TCP clients and |
3005 | servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. |
3026 | servers: L<AnyEvent::Handle>, L<AnyEvent::Socket>, L<AnyEvent::TLS>. |
3006 | |
3027 | |
|
|
3028 | Asynchronous File I/O: L<AnyEvent::IO>. |
|
|
3029 | |
3007 | Asynchronous DNS: L<AnyEvent::DNS>. |
3030 | Asynchronous DNS: L<AnyEvent::DNS>. |
3008 | |
3031 | |
3009 | Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>. |
3032 | Thread support: L<Coro>, L<Coro::AnyEvent>, L<Coro::EV>, L<Coro::Event>. |
3010 | |
3033 | |
3011 | Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>, |
3034 | Nontrivial usage examples: L<AnyEvent::GPSD>, L<AnyEvent::IRC>, |
… | |
… | |
3013 | |
3036 | |
3014 | |
3037 | |
3015 | =head1 AUTHOR |
3038 | =head1 AUTHOR |
3016 | |
3039 | |
3017 | Marc Lehmann <schmorp@schmorp.de> |
3040 | Marc Lehmann <schmorp@schmorp.de> |
3018 | http://home.schmorp.de/ |
3041 | http://anyevent.schmorp.de |
3019 | |
3042 | |
3020 | =cut |
3043 | =cut |
3021 | |
3044 | |
3022 | 1 |
3045 | 1 |
3023 | |
3046 | |