… | |
… | |
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::FLTK2 based on FLTK (fltk 2 binding). |
883 | AnyEvent::Impl::FLTK based on FLTK (fltk 2 binding). |
884 | |
884 | |
885 | =item Backends with special needs. |
885 | =item Backends with special needs. |
886 | |
886 | |
887 | Qt requires the Qt::Application to be instantiated first, but will |
887 | Qt requires the Qt::Application to be instantiated first, but will |
888 | otherwise be picked up automatically. As long as the main program |
888 | otherwise be picked up automatically. As long as the main program |
… | |
… | |
1053 | |
1053 | |
1054 | =item AnyEvent::log $level, $msg[, @args] |
1054 | =item AnyEvent::log $level, $msg[, @args] |
1055 | |
1055 | |
1056 | Log the given C<$msg> at the given C<$level>. |
1056 | Log the given C<$msg> at the given C<$level>. |
1057 | |
1057 | |
1058 | Loads AnyEvent::Log on first use and calls C<AnyEvent::Log::log> - |
1058 | If L<AnyEvent::Log> is not loaded then this function makes a simple test |
|
|
1059 | to see whether the message will be logged. If the test succeeds it will |
|
|
1060 | load AnyEvent::Log and call C<AnyEvent::Log::log> - consequently, look at |
1059 | consequently, look at the L<AnyEvent::Log> documentation for details. |
1061 | the L<AnyEvent::Log> documentation for details. |
|
|
1062 | |
|
|
1063 | If the test fails it will simply return. Right now this happens when a |
|
|
1064 | numerical loglevel is used and it is larger than the level specified via |
|
|
1065 | C<$ENV{PERL_ANYEVENT_VERBOSE}>. |
1060 | |
1066 | |
1061 | If you want to sprinkle loads of logging calls around your code, consider |
1067 | If you want to sprinkle loads of logging calls around your code, consider |
1062 | creating a logger callback with the C<AnyEvent::Log::logger> function. |
1068 | creating a logger callback with the C<AnyEvent::Log::logger> function, |
|
|
1069 | which can reduce typing, codesize and can reduce the logging overhead |
|
|
1070 | enourmously. |
1063 | |
1071 | |
1064 | =back |
1072 | =back |
1065 | |
1073 | |
1066 | =head1 WHAT TO DO IN A MODULE |
1074 | =head1 WHAT TO DO IN A MODULE |
1067 | |
1075 | |
… | |
… | |
1160 | |
1168 | |
1161 | Implement event-based interfaces to the protocols of the same name (for |
1169 | Implement event-based interfaces to the protocols of the same name (for |
1162 | the curious, IGS is the International Go Server and FCP is the Freenet |
1170 | the curious, IGS is the International Go Server and FCP is the Freenet |
1163 | Client Protocol). |
1171 | Client Protocol). |
1164 | |
1172 | |
1165 | =item L<AnyEvent::Handle::UDP> |
|
|
1166 | |
|
|
1167 | Here be danger! |
|
|
1168 | |
|
|
1169 | As Pauli would put it, "Not only is it not right, it's not even wrong!" - |
|
|
1170 | there are so many things wrong with AnyEvent::Handle::UDP, most notably |
|
|
1171 | its use of a stream-based API with a protocol that isn't streamable, that |
|
|
1172 | the only way to improve it is to delete it. |
|
|
1173 | |
|
|
1174 | It features data corruption (but typically only under load) and general |
|
|
1175 | confusion. On top, the author is not only clueless about UDP but also |
|
|
1176 | fact-resistant - some gems of his understanding: "connect doesn't work |
|
|
1177 | with UDP", "UDP packets are not IP packets", "UDP only has datagrams, not |
|
|
1178 | packets", "I don't need to implement proper error checking as UDP doesn't |
|
|
1179 | support error checking" and so on - he doesn't even understand what's |
|
|
1180 | wrong with his module when it is explained to him. |
|
|
1181 | |
|
|
1182 | =item L<AnyEvent::DBI> |
|
|
1183 | |
|
|
1184 | Executes L<DBI> requests asynchronously in a proxy process for you, |
|
|
1185 | notifying you in an event-based way when the operation is finished. |
|
|
1186 | |
|
|
1187 | =item L<AnyEvent::AIO> |
1173 | =item L<AnyEvent::AIO> |
1188 | |
1174 | |
1189 | Truly asynchronous (as opposed to non-blocking) I/O, should be in the |
1175 | Truly asynchronous (as opposed to non-blocking) I/O, should be in the |
1190 | toolbox of every event programmer. AnyEvent::AIO transparently fuses |
1176 | toolbox of every event programmer. AnyEvent::AIO transparently fuses |
1191 | L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based |
1177 | L<IO::AIO> and AnyEvent together, giving AnyEvent access to event-based |
1192 | file I/O, and much more. |
1178 | file I/O, and much more. |
1193 | |
1179 | |
|
|
1180 | =item L<AnyEvent::Filesys::Notify> |
|
|
1181 | |
|
|
1182 | AnyEvent is good for non-blocking stuff, but it can't detect file or |
|
|
1183 | path changes (e.g. "watch this directory for new files", "watch this |
|
|
1184 | file for changes"). The L<AnyEvent::Filesys::Notify> module promises to |
|
|
1185 | do just that in a portbale fashion, supporting inotify on GNU/Linux and |
|
|
1186 | some weird, without doubt broken, stuff on OS X to monitor files. It can |
|
|
1187 | fall back to blocking scans at regular intervals transparently on other |
|
|
1188 | platforms, so it's about as portable as it gets. |
|
|
1189 | |
|
|
1190 | (I haven't used it myself, but I haven't heard anybody complaining about |
|
|
1191 | it yet). |
|
|
1192 | |
|
|
1193 | =item L<AnyEvent::DBI> |
|
|
1194 | |
|
|
1195 | Executes L<DBI> requests asynchronously in a proxy process for you, |
|
|
1196 | notifying you in an event-based way when the operation is finished. |
|
|
1197 | |
1194 | =item L<AnyEvent::HTTPD> |
1198 | =item L<AnyEvent::HTTPD> |
1195 | |
1199 | |
1196 | A simple embedded webserver. |
1200 | A simple embedded webserver. |
1197 | |
1201 | |
1198 | =item L<AnyEvent::FastPing> |
1202 | =item L<AnyEvent::FastPing> |
1199 | |
1203 | |
1200 | The fastest ping in the west. |
1204 | The fastest ping in the west. |
1201 | |
1205 | |
1202 | =item L<Coro> |
1206 | =item L<Coro> |
1203 | |
1207 | |
1204 | Has special support for AnyEvent via L<Coro::AnyEvent>. |
1208 | Has special support for AnyEvent via L<Coro::AnyEvent>, which allows you |
|
|
1209 | to simply invert the flow control - don't call us, we will call you: |
|
|
1210 | |
|
|
1211 | async { |
|
|
1212 | Coro::AnyEvent::sleep 5; # creates a 5s timer and waits for it |
|
|
1213 | print "5 seconds later!\n"; |
|
|
1214 | |
|
|
1215 | Coro::AnyEvent::readable *STDIN; # uses an I/O watcher |
|
|
1216 | my $line = <STDIN>; # works for ttys |
|
|
1217 | |
|
|
1218 | AnyEvent::HTTP::http_get "url", Coro::rouse_cb; |
|
|
1219 | my ($body, $hdr) = Coro::rouse_wait; |
|
|
1220 | }; |
1205 | |
1221 | |
1206 | =back |
1222 | =back |
1207 | |
1223 | |
1208 | =cut |
1224 | =cut |
1209 | |
1225 | |
… | |
… | |
1219 | |
1235 | |
1220 | BEGIN { AnyEvent::common_sense } |
1236 | BEGIN { AnyEvent::common_sense } |
1221 | |
1237 | |
1222 | use Carp (); |
1238 | use Carp (); |
1223 | |
1239 | |
1224 | our $VERSION = '6.01'; |
1240 | our $VERSION = '6.02'; |
1225 | our $MODEL; |
1241 | our $MODEL; |
1226 | |
1242 | |
1227 | our @ISA; |
1243 | our @ISA; |
1228 | |
1244 | |
1229 | our @REGISTRY; |
1245 | our @REGISTRY; |
… | |
… | |
1242 | for grep s/^AE_// && !exists $ENV{"PERL_ANYEVENT_$_"}, keys %ENV; |
1258 | for grep s/^AE_// && !exists $ENV{"PERL_ANYEVENT_$_"}, keys %ENV; |
1243 | |
1259 | |
1244 | @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = () |
1260 | @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = () |
1245 | if ${^TAINT}; |
1261 | if ${^TAINT}; |
1246 | |
1262 | |
1247 | $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; |
1263 | # $ENV{PERL_ANYEVENT_xxx} now valid |
|
|
1264 | |
|
|
1265 | $VERBOSE = length $ENV{PERL_ANYEVENT_VERBOSE} ? $ENV{PERL_ANYEVENT_VERBOSE}*1 : 3; |
1248 | } |
1266 | } |
1249 | |
1267 | |
1250 | our $MAX_SIGNAL_LATENCY = 10; |
1268 | our $MAX_SIGNAL_LATENCY = 10; |
1251 | |
1269 | |
1252 | our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred |
1270 | our %PROTOCOL; # (ipv4|ipv6) => (1|2), higher numbers are preferred |
… | |
… | |
1291 | |
1309 | |
1292 | () |
1310 | () |
1293 | } |
1311 | } |
1294 | |
1312 | |
1295 | sub log($$;@) { |
1313 | sub log($$;@) { |
1296 | # only load the bug bloated module when we actually are about to log something |
1314 | # only load the big bloated module when we actually are about to log something |
1297 | if ($_[0] <= $VERBOSE) { |
1315 | if ($_[0] <= $VERBOSE) { # also catches non-numeric levels(!) |
1298 | require AnyEvent::Log; |
1316 | require AnyEvent::Log; |
1299 | # AnyEvent::Log overwrites this function |
1317 | # AnyEvent::Log overwrites this function |
1300 | goto &log; |
1318 | goto &log; |
1301 | } |
1319 | } |
|
|
1320 | |
|
|
1321 | 0 # not logged |
1302 | } |
1322 | } |
1303 | |
1323 | |
1304 | if (length $ENV{PERL_ANYEVENT_LOG}) { |
1324 | if (length $ENV{PERL_ANYEVENT_LOG}) { |
1305 | require AnyEvent::Log; # AnyEvent::Log does the thing for us |
1325 | require AnyEvent::Log; # AnyEvent::Log does the thing for us |
1306 | } |
1326 | } |
… | |
… | |
1320 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1340 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1321 | [Wx:: => AnyEvent::Impl::POE::], |
1341 | [Wx:: => AnyEvent::Impl::POE::], |
1322 | [Prima:: => AnyEvent::Impl::POE::], |
1342 | [Prima:: => AnyEvent::Impl::POE::], |
1323 | [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect |
1343 | [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect |
1324 | [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::], |
1344 | [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::], |
1325 | [FLTK:: => AnyEvent::Impl::FLTK2::], |
1345 | [FLTK:: => AnyEvent::Impl::FLTK::], |
1326 | ); |
1346 | ); |
1327 | |
1347 | |
1328 | our @isa_hook; |
1348 | our @isa_hook; |
1329 | |
1349 | |
1330 | sub _isa_set { |
1350 | sub _isa_set { |
… | |
… | |
1371 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1391 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1372 | if (eval "require $model") { |
1392 | if (eval "require $model") { |
1373 | AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."; |
1393 | AnyEvent::log 7 => "loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it."; |
1374 | $MODEL = $model; |
1394 | $MODEL = $model; |
1375 | } else { |
1395 | } else { |
1376 | AnyEvent::log warn => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@"; |
1396 | AnyEvent::log 5 => "unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@"; |
1377 | } |
1397 | } |
1378 | } |
1398 | } |
1379 | |
1399 | |
1380 | # check for already loaded models |
1400 | # check for already loaded models |
1381 | unless ($MODEL) { |
1401 | unless ($MODEL) { |
… | |
… | |
1559 | |
1579 | |
1560 | sub time { |
1580 | sub time { |
1561 | eval q{ # poor man's autoloading {} |
1581 | eval q{ # poor man's autoloading {} |
1562 | # probe for availability of Time::HiRes |
1582 | # probe for availability of Time::HiRes |
1563 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1583 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1564 | AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy." |
|
|
1565 | if $AnyEvent::VERBOSE >= 8; |
|
|
1566 | *time = sub { Time::HiRes::time () }; |
1584 | *time = sub { Time::HiRes::time () }; |
1567 | *AE::time = \& Time::HiRes::time ; |
1585 | *AE::time = \& Time::HiRes::time ; |
|
|
1586 | *now = \&time; |
|
|
1587 | AnyEvent::log 8 => "AnyEvent: using Time::HiRes for sub-second timing accuracy."; |
1568 | # if (eval "use POSIX (); (POSIX::times())... |
1588 | # if (eval "use POSIX (); (POSIX::times())... |
1569 | } else { |
1589 | } else { |
1570 | AnyEvent::log critical => "using built-in time(), WARNING, no sub-second resolution!"; |
|
|
1571 | *time = sub { CORE::time }; |
1590 | *time = sub { CORE::time }; |
1572 | *AE::time = sub (){ CORE::time }; |
1591 | *AE::time = sub (){ CORE::time }; |
|
|
1592 | *now = \&time; |
|
|
1593 | AnyEvent::log 3 => "using built-in time(), WARNING, no sub-second resolution!"; |
1573 | } |
1594 | } |
1574 | |
|
|
1575 | *now = \&time; |
|
|
1576 | }; |
1595 | }; |
1577 | die if $@; |
1596 | die if $@; |
1578 | |
1597 | |
1579 | &time |
1598 | &time |
1580 | } |
1599 | } |
… | |
… | |
1673 | |
1692 | |
1674 | sub signal { |
1693 | sub signal { |
1675 | eval q{ # poor man's autoloading {} |
1694 | eval q{ # poor man's autoloading {} |
1676 | # probe for availability of Async::Interrupt |
1695 | # probe for availability of Async::Interrupt |
1677 | if (_have_async_interrupt) { |
1696 | if (_have_async_interrupt) { |
1678 | AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling." |
1697 | AnyEvent::log 8 => "using Async::Interrupt for race-free signal handling."; |
1679 | if $AnyEvent::VERBOSE >= 8; |
|
|
1680 | |
1698 | |
1681 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1699 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1682 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1700 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1683 | |
1701 | |
1684 | } else { |
1702 | } else { |
1685 | AnyEvent::log 8 => "using emulated perl signal handling with latency timer." |
1703 | AnyEvent::log 8 => "using emulated perl signal handling with latency timer."; |
1686 | if $AnyEvent::VERBOSE >= 8; |
|
|
1687 | |
1704 | |
1688 | if (AnyEvent::WIN32) { |
1705 | if (AnyEvent::WIN32) { |
1689 | require AnyEvent::Util; |
1706 | require AnyEvent::Util; |
1690 | |
1707 | |
1691 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
1708 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
… | |
… | |
2027 | |
2044 | |
2028 | =over 4 |
2045 | =over 4 |
2029 | |
2046 | |
2030 | =item C<PERL_ANYEVENT_VERBOSE> |
2047 | =item C<PERL_ANYEVENT_VERBOSE> |
2031 | |
2048 | |
2032 | By default, AnyEvent will be completely silent except in fatal |
2049 | By default, AnyEvent will only log messages with loglevel C<3> |
2033 | conditions. You can set this environment variable to make AnyEvent more |
2050 | (C<critical>) or higher (see L<AnyEvent::Log>). You can set this |
|
|
2051 | environment variable to a numerical loglevel to make AnyEvent more (or |
|
|
2052 | less) talkative. |
|
|
2053 | |
2034 | talkative. If you want to do more than just set the global logging level |
2054 | If you want to do more than just set the global logging level |
2035 | you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more |
2055 | you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more |
2036 | complex specifications. |
2056 | complex specifications. |
2037 | |
2057 | |
|
|
2058 | When set to C<0> (C<off>), then no messages whatsoever will be logged with |
|
|
2059 | the default logging settings. |
|
|
2060 | |
2038 | When set to C<5> or higher, causes AnyEvent to warn about unexpected |
2061 | When set to C<5> or higher (C<warn>), causes AnyEvent to warn about |
2039 | conditions, such as not being able to load the event model specified by |
2062 | unexpected conditions, such as not being able to load the event model |
2040 | C<PERL_ANYEVENT_MODEL>. |
2063 | specified by C<PERL_ANYEVENT_MODEL>, or a guard callback throwing an |
|
|
2064 | exception - this is the minimum recommended level. |
2041 | |
2065 | |
2042 | When set to C<7> or higher, cause AnyEvent to report to STDERR which event |
2066 | When set to C<7> or higher (info), cause AnyEvent to report which event model it |
2043 | model it chooses. |
2067 | chooses. |
2044 | |
2068 | |
2045 | When set to C<8> or higher, then AnyEvent will report extra information on |
2069 | When set to C<8> or higher (debug), then AnyEvent will report extra information on |
2046 | which optional modules it loads and how it implements certain features. |
2070 | which optional modules it loads and how it implements certain features. |
2047 | |
2071 | |
2048 | =item C<PERL_ANYEVENT_LOG> |
2072 | =item C<PERL_ANYEVENT_LOG> |
2049 | |
2073 | |
2050 | Accepts rather complex logging specifications. For example, you could log |
2074 | Accepts rather complex logging specifications. For example, you could log |
… | |
… | |
2052 | stderr, and errors and above to syslog, with: |
2076 | stderr, and errors and above to syslog, with: |
2053 | |
2077 | |
2054 | PERL_ANYEVENT_LOG=Some::Module=debug,+log:filter=warn,+%syslog:%syslog=error,syslog |
2078 | PERL_ANYEVENT_LOG=Some::Module=debug,+log:filter=warn,+%syslog:%syslog=error,syslog |
2055 | |
2079 | |
2056 | For the rather extensive details, see L<AnyEvent::Log>. |
2080 | For the rather extensive details, see L<AnyEvent::Log>. |
|
|
2081 | |
|
|
2082 | This variable is evaluated when AnyEvent (or L<AnyEvent::Log>) is loaded, |
|
|
2083 | so will take effect even before AnyEvent has initialised itself. |
2057 | |
2084 | |
2058 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
2085 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
2059 | module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only |
2086 | module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only |
2060 | using the latter saves a few hundred kB of memory until the first message |
2087 | using the latter saves a few hundred kB of memory until the first message |
2061 | is being logged. |
2088 | is being logged. |