… | |
… | |
85 | that isn't them. What's worse, all the potential users of your |
85 | that isn't them. What's worse, all the potential users of your |
86 | module are I<also> forced to use the same event loop you use. |
86 | module are I<also> forced to use the same event loop you use. |
87 | |
87 | |
88 | AnyEvent is different: AnyEvent + POE works fine. AnyEvent + Glib works |
88 | AnyEvent is different: AnyEvent + POE works fine. AnyEvent + Glib works |
89 | fine. AnyEvent + Tk works fine etc. etc. but none of these work together |
89 | fine. AnyEvent + Tk works fine etc. etc. but none of these work together |
90 | with the rest: POE + IO::Async? No go. Tk + Event? No go. Again: if |
90 | with the rest: POE + EV? No go. Tk + Event? No go. Again: if your module |
91 | your module uses one of those, every user of your module has to use it, |
91 | uses one of those, every user of your module has to use it, too. But if |
92 | too. But if your module uses AnyEvent, it works transparently with all |
92 | your module uses AnyEvent, it works transparently with all event models it |
93 | event models it supports (including stuff like IO::Async, as long as those |
93 | supports (including stuff like IO::Async, as long as those use one of the |
94 | use one of the supported event loops. It is easy to add new event loops |
94 | supported event loops. It is easy to add new event loops to AnyEvent, too, |
95 | to AnyEvent, too, so it is future-proof). |
95 | so it is future-proof). |
96 | |
96 | |
97 | In addition to being free of having to use I<the one and only true event |
97 | In addition to being free of having to use I<the one and only true event |
98 | model>, AnyEvent also is free of bloat and policy: with POE or similar |
98 | model>, AnyEvent also is free of bloat and policy: with POE or similar |
99 | modules, you get an enormous amount of code and strict rules you have to |
99 | modules, you get an enormous amount of code and strict rules you have to |
100 | follow. AnyEvent, on the other hand, is lean and to the point, by only |
100 | follow. AnyEvent, on the other hand, is lean and to the point, by only |
… | |
… | |
121 | The interface itself is vaguely similar, but not identical to the L<Event> |
121 | The interface itself is vaguely similar, but not identical to the L<Event> |
122 | module. |
122 | module. |
123 | |
123 | |
124 | During the first call of any watcher-creation method, the module tries |
124 | During the first call of any watcher-creation method, the module tries |
125 | to detect the currently loaded event loop by probing whether one of the |
125 | to detect the currently loaded event loop by probing whether one of the |
126 | following modules is already loaded: L<EV>, L<AnyEvent::Impl::Perl>, |
126 | following modules is already loaded: L<EV>, L<AnyEvent::Loop>, |
127 | L<Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. The first one |
127 | L<Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. The first one |
128 | found is used. If none are detected, the module tries to load the first |
128 | found is used. If none are detected, the module tries to load the first |
129 | four modules in the order given; but note that if L<EV> is not |
129 | four modules in the order given; but note that if L<EV> is not |
130 | available, the pure-perl L<AnyEvent::Impl::Perl> should always work, so |
130 | available, the pure-perl L<AnyEvent::Loop> should always work, so |
131 | the other two are not normally tried. |
131 | the other two are not normally tried. |
132 | |
132 | |
133 | Because AnyEvent first checks for modules that are already loaded, loading |
133 | Because AnyEvent first checks for modules that are already loaded, loading |
134 | an event model explicitly before first using AnyEvent will likely make |
134 | an event model explicitly before first using AnyEvent will likely make |
135 | that model the default. For example: |
135 | that model the default. For example: |
… | |
… | |
142 | The I<likely> means that, if any module loads another event model and |
142 | The I<likely> means that, if any module loads another event model and |
143 | starts using it, all bets are off - this case should be very rare though, |
143 | starts using it, all bets are off - this case should be very rare though, |
144 | as very few modules hardcode event loops without announcing this very |
144 | as very few modules hardcode event loops without announcing this very |
145 | loudly. |
145 | loudly. |
146 | |
146 | |
147 | The pure-perl implementation of AnyEvent is called |
147 | The pure-perl implementation of AnyEvent is called C<AnyEvent::Loop>. Like |
148 | C<AnyEvent::Impl::Perl>. Like other event modules you can load it |
148 | other event modules you can load it explicitly and enjoy the high |
149 | explicitly and enjoy the high availability of that event loop :) |
149 | availability of that event loop :) |
150 | |
150 | |
151 | =head1 WATCHERS |
151 | =head1 WATCHERS |
152 | |
152 | |
153 | AnyEvent has the central concept of a I<watcher>, which is an object that |
153 | AnyEvent has the central concept of a I<watcher>, which is an object that |
154 | stores relevant data for each kind of event you are waiting for, such as |
154 | stores relevant data for each kind of event you are waiting for, such as |
… | |
… | |
356 | difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into |
356 | difference between C<< AnyEvent->time >> and C<< AnyEvent->now >> into |
357 | account. |
357 | account. |
358 | |
358 | |
359 | =item AnyEvent->now_update |
359 | =item AnyEvent->now_update |
360 | |
360 | |
361 | Some event loops (such as L<EV> or L<AnyEvent::Impl::Perl>) cache |
361 | Some event loops (such as L<EV> or L<AnyEvent::Loop>) cache the current |
362 | the current time for each loop iteration (see the discussion of L<< |
362 | time for each loop iteration (see the discussion of L<< AnyEvent->now >>, |
363 | AnyEvent->now >>, above). |
363 | above). |
364 | |
364 | |
365 | When a callback runs for a long time (or when the process sleeps), then |
365 | When a callback runs for a long time (or when the process sleeps), then |
366 | this "current" time will differ substantially from the real time, which |
366 | this "current" time will differ substantially from the real time, which |
367 | might affect timers and time-outs. |
367 | might affect timers and time-outs. |
368 | |
368 | |
… | |
… | |
482 | thing in an AnyEvent program, you I<have> to create at least one |
482 | thing in an AnyEvent program, you I<have> to create at least one |
483 | watcher before you C<fork> the child (alternatively, you can call |
483 | watcher before you C<fork> the child (alternatively, you can call |
484 | C<AnyEvent::detect>). |
484 | C<AnyEvent::detect>). |
485 | |
485 | |
486 | As most event loops do not support waiting for child events, they will be |
486 | As most event loops do not support waiting for child events, they will be |
487 | emulated by AnyEvent in most cases, in which the latency and race problems |
487 | emulated by AnyEvent in most cases, in which case the latency and race |
488 | mentioned in the description of signal watchers apply. |
488 | problems mentioned in the description of signal watchers apply. |
489 | |
489 | |
490 | Example: fork a process and wait for it |
490 | Example: fork a process and wait for it |
491 | |
491 | |
492 | my $done = AnyEvent->condvar; |
492 | my $done = AnyEvent->condvar; |
493 | |
493 | |
… | |
… | |
860 | use. If EV is not installed, then AnyEvent will fall back to its own |
860 | use. If EV is not installed, then AnyEvent will fall back to its own |
861 | pure-perl implementation, which is available everywhere as it comes with |
861 | pure-perl implementation, which is available everywhere as it comes with |
862 | AnyEvent itself. |
862 | AnyEvent itself. |
863 | |
863 | |
864 | AnyEvent::Impl::EV based on EV (interface to libev, best choice). |
864 | AnyEvent::Impl::EV based on EV (interface to libev, best choice). |
865 | AnyEvent::Impl::Perl pure-perl implementation, fast and portable. |
865 | AnyEvent::Impl::Perl pure-perl AnyEvent::Loop, fast and portable. |
866 | |
866 | |
867 | =item Backends that are transparently being picked up when they are used. |
867 | =item Backends that are transparently being picked up when they are used. |
868 | |
868 | |
869 | These will be used if they are already loaded when the first watcher |
869 | These will be used if they are already loaded when the first watcher |
870 | is created, in which case it is assumed that the application is using |
870 | is created, in which case it is assumed that the application is using |
… | |
… | |
876 | AnyEvent::Impl::Glib based on Glib, slow but very stable. |
876 | AnyEvent::Impl::Glib based on Glib, slow but very stable. |
877 | AnyEvent::Impl::Tk based on Tk, very broken. |
877 | AnyEvent::Impl::Tk based on Tk, very broken. |
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. |
|
|
882 | AnyEvent::Impl::Cocoa based on Cocoa::EventLoop. |
|
|
883 | AnyEvent::Impl::FLTK2 based on FLTK (fltk 2 binding). |
881 | |
884 | |
882 | =item Backends with special needs. |
885 | =item Backends with special needs. |
883 | |
886 | |
884 | Qt requires the Qt::Application to be instantiated first, but will |
887 | Qt requires the Qt::Application to be instantiated first, but will |
885 | otherwise be picked up automatically. As long as the main program |
888 | otherwise be picked up automatically. As long as the main program |
886 | instantiates the application before any AnyEvent watchers are created, |
889 | instantiates the application before any AnyEvent watchers are created, |
887 | everything should just work. |
890 | everything should just work. |
888 | |
891 | |
889 | AnyEvent::Impl::Qt based on Qt. |
892 | AnyEvent::Impl::Qt based on Qt. |
890 | |
|
|
891 | Support for IO::Async can only be partial, as it is too broken and |
|
|
892 | architecturally limited to even support the AnyEvent API. It also |
|
|
893 | is the only event loop that needs the loop to be set explicitly, so |
|
|
894 | it can only be used by a main program knowing about AnyEvent. See |
|
|
895 | L<AnyEvent::Impl::IOAsync> for the gory details. |
|
|
896 | |
|
|
897 | AnyEvent::Impl::IOAsync based on IO::Async, cannot be autoprobed. |
|
|
898 | |
893 | |
899 | =item Event loops that are indirectly supported via other backends. |
894 | =item Event loops that are indirectly supported via other backends. |
900 | |
895 | |
901 | Some event loops can be supported via other modules: |
896 | Some event loops can be supported via other modules: |
902 | |
897 | |
… | |
… | |
938 | |
933 | |
939 | Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model |
934 | Returns C<$AnyEvent::MODEL>, forcing autodetection of the event model |
940 | if necessary. You should only call this function right before you would |
935 | if necessary. You should only call this function right before you would |
941 | have created an AnyEvent watcher anyway, that is, as late as possible at |
936 | have created an AnyEvent watcher anyway, that is, as late as possible at |
942 | runtime, and not e.g. during initialisation of your module. |
937 | runtime, and not e.g. during initialisation of your module. |
|
|
938 | |
|
|
939 | The effect of calling this function is as if a watcher had been created |
|
|
940 | (specifically, actions that happen "when the first watcher is created" |
|
|
941 | happen when calling detetc as well). |
943 | |
942 | |
944 | If you need to do some initialisation before AnyEvent watchers are |
943 | If you need to do some initialisation before AnyEvent watchers are |
945 | created, use C<post_detect>. |
944 | created, use C<post_detect>. |
946 | |
945 | |
947 | =item $guard = AnyEvent::post_detect { BLOCK } |
946 | =item $guard = AnyEvent::post_detect { BLOCK } |
… | |
… | |
1010 | # AnyEvent not yet initialised, so make sure to load Coro::AnyEvent |
1009 | # AnyEvent not yet initialised, so make sure to load Coro::AnyEvent |
1011 | # as soon as it is |
1010 | # as soon as it is |
1012 | push @AnyEvent::post_detect, sub { require Coro::AnyEvent }; |
1011 | push @AnyEvent::post_detect, sub { require Coro::AnyEvent }; |
1013 | } |
1012 | } |
1014 | |
1013 | |
|
|
1014 | =item AnyEvent::postpone { BLOCK } |
|
|
1015 | |
|
|
1016 | Arranges for the block to be executed as soon as possible, but not before |
|
|
1017 | the call itself returns. In practise, the block will be executed just |
|
|
1018 | before the event loop polls for new events, or shortly afterwards. |
|
|
1019 | |
|
|
1020 | This function never returns anything (to make the C<return postpone { ... |
|
|
1021 | }> idiom more useful. |
|
|
1022 | |
|
|
1023 | To understand the usefulness of this function, consider a function that |
|
|
1024 | asynchronously does something for you and returns some transaction |
|
|
1025 | object or guard to let you cancel the operation. For example, |
|
|
1026 | C<AnyEvent::Socket::tcp_connect>: |
|
|
1027 | |
|
|
1028 | # start a conenction attempt unless one is active |
|
|
1029 | $self->{connect_guard} ||= AnyEvent::Socket::tcp_connect "www.example.net", 80, sub { |
|
|
1030 | delete $self->{connect_guard}; |
|
|
1031 | ... |
|
|
1032 | }; |
|
|
1033 | |
|
|
1034 | Imagine that this function could instantly call the callback, for |
|
|
1035 | example, because it detects an obvious error such as a negative port |
|
|
1036 | number. Invoking the callback before the function returns causes problems |
|
|
1037 | however: the callback will be called and will try to delete the guard |
|
|
1038 | object. But since the function hasn't returned yet, there is nothing to |
|
|
1039 | delete. When the function eventually returns it will assign the guard |
|
|
1040 | object to C<< $self->{connect_guard} >>, where it will likely never be |
|
|
1041 | deleted, so the program thinks it is still trying to connect. |
|
|
1042 | |
|
|
1043 | This is where C<AnyEvent::postpone> should be used. Instead of calling the |
|
|
1044 | callback directly on error: |
|
|
1045 | |
|
|
1046 | $cb->(undef), return # signal error to callback, BAD! |
|
|
1047 | if $some_error_condition; |
|
|
1048 | |
|
|
1049 | It should use C<postpone>: |
|
|
1050 | |
|
|
1051 | AnyEvent::postpone { $cb->(undef) }, return # signal error to callback, later |
|
|
1052 | if $some_error_condition; |
|
|
1053 | |
1015 | =back |
1054 | =back |
1016 | |
1055 | |
1017 | =head1 WHAT TO DO IN A MODULE |
1056 | =head1 WHAT TO DO IN A MODULE |
1018 | |
1057 | |
1019 | As a module author, you should C<use AnyEvent> and call AnyEvent methods |
1058 | As a module author, you should C<use AnyEvent> and call AnyEvent methods |
… | |
… | |
1052 | modules might create watchers when they are loaded, and AnyEvent will |
1091 | modules might create watchers when they are loaded, and AnyEvent will |
1053 | decide on the event model to use as soon as it creates watchers, and it |
1092 | decide on the event model to use as soon as it creates watchers, and it |
1054 | might choose the wrong one unless you load the correct one yourself. |
1093 | might choose the wrong one unless you load the correct one yourself. |
1055 | |
1094 | |
1056 | You can chose to use a pure-perl implementation by loading the |
1095 | You can chose to use a pure-perl implementation by loading the |
1057 | C<AnyEvent::Impl::Perl> module, which gives you similar behaviour |
1096 | C<AnyEvent::Loop> module, which gives you similar behaviour |
1058 | everywhere, but letting AnyEvent chose the model is generally better. |
1097 | everywhere, but letting AnyEvent chose the model is generally better. |
1059 | |
1098 | |
1060 | =head2 MAINLOOP EMULATION |
1099 | =head2 MAINLOOP EMULATION |
1061 | |
1100 | |
1062 | Sometimes (often for short test scripts, or even standalone programs who |
1101 | Sometimes (often for short test scripts, or even standalone programs who |
… | |
… | |
1157 | |
1196 | |
1158 | package AnyEvent; |
1197 | package AnyEvent; |
1159 | |
1198 | |
1160 | # basically a tuned-down version of common::sense |
1199 | # basically a tuned-down version of common::sense |
1161 | sub common_sense { |
1200 | sub common_sense { |
1162 | # from common:.sense 3.3 |
1201 | # from common:.sense 3.4 |
1163 | ${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf3\x0f\xc0\xf0\xfc\x33\x00"; |
1202 | ${^WARNING_BITS} ^= ${^WARNING_BITS} ^ "\x3c\x3f\x33\x00\x0f\xf0\x0f\xc0\xf0\xfc\x33\x00"; |
1164 | # use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl) |
1203 | # use strict vars subs - NO UTF-8, as Util.pm doesn't like this atm. (uts46data.pl) |
1165 | $^H |= 0x00000600; |
1204 | $^H |= 0x00000600; |
1166 | } |
1205 | } |
1167 | |
1206 | |
1168 | BEGIN { AnyEvent::common_sense } |
1207 | BEGIN { AnyEvent::common_sense } |
1169 | |
1208 | |
1170 | use Carp (); |
1209 | use Carp (); |
1171 | |
1210 | |
1172 | our $VERSION = '5.29'; |
1211 | our $VERSION = '6.01'; |
1173 | our $MODEL; |
1212 | our $MODEL; |
1174 | |
1213 | |
1175 | our $AUTOLOAD; |
|
|
1176 | our @ISA; |
1214 | our @ISA; |
1177 | |
1215 | |
1178 | our @REGISTRY; |
1216 | our @REGISTRY; |
1179 | |
1217 | |
1180 | our $VERBOSE; |
1218 | our $VERBOSE; |
… | |
… | |
1200 | $PROTOCOL{$_} = ++$idx |
1238 | $PROTOCOL{$_} = ++$idx |
1201 | for reverse split /\s*,\s*/, |
1239 | for reverse split /\s*,\s*/, |
1202 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1240 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1203 | } |
1241 | } |
1204 | |
1242 | |
|
|
1243 | our @post_detect; |
|
|
1244 | |
|
|
1245 | sub post_detect(&) { |
|
|
1246 | my ($cb) = @_; |
|
|
1247 | |
|
|
1248 | push @post_detect, $cb; |
|
|
1249 | |
|
|
1250 | defined wantarray |
|
|
1251 | ? bless \$cb, "AnyEvent::Util::postdetect" |
|
|
1252 | : () |
|
|
1253 | } |
|
|
1254 | |
|
|
1255 | sub AnyEvent::Util::postdetect::DESTROY { |
|
|
1256 | @post_detect = grep $_ != ${$_[0]}, @post_detect; |
|
|
1257 | } |
|
|
1258 | |
|
|
1259 | our $POSTPONE_W; |
|
|
1260 | our @POSTPONE; |
|
|
1261 | |
|
|
1262 | sub _postpone_exec { |
|
|
1263 | undef $POSTPONE_W; |
|
|
1264 | |
|
|
1265 | &{ shift @POSTPONE } |
|
|
1266 | while @POSTPONE; |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | sub postpone(&) { |
|
|
1270 | push @POSTPONE, shift; |
|
|
1271 | |
|
|
1272 | $POSTPONE_W ||= AE::timer (0, 0, \&_postpone_exec); |
|
|
1273 | |
|
|
1274 | () |
|
|
1275 | } |
|
|
1276 | |
1205 | my @models = ( |
1277 | our @models = ( |
1206 | [EV:: => AnyEvent::Impl::EV:: , 1], |
1278 | [EV:: => AnyEvent::Impl::EV:: , 1], |
1207 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1], |
1279 | [AnyEvent::Loop:: => AnyEvent::Impl::Perl:: , 1], |
1208 | # everything below here will not (normally) be autoprobed |
1280 | # everything below here will not (normally) be autoprobed |
1209 | # as the pureperl backend should work everywhere |
1281 | # as the pure perl backend should work everywhere |
1210 | # and is usually faster |
1282 | # and is usually faster |
1211 | [Event:: => AnyEvent::Impl::Event::, 1], |
1283 | [Event:: => AnyEvent::Impl::Event::, 1], |
1212 | [Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers |
1284 | [Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers |
1213 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1285 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1214 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package |
1286 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package |
1215 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1287 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1216 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1288 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1217 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1289 | [POE::Kernel:: => AnyEvent::Impl::POE::], # lasciate ogni speranza |
1218 | [Wx:: => AnyEvent::Impl::POE::], |
1290 | [Wx:: => AnyEvent::Impl::POE::], |
1219 | [Prima:: => AnyEvent::Impl::POE::], |
1291 | [Prima:: => AnyEvent::Impl::POE::], |
1220 | # IO::Async is just too broken - we would need workarounds for its |
1292 | [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # a bitch to autodetect |
1221 | # byzantine signal and broken child handling, among others. |
1293 | [Cocoa::EventLoop:: => AnyEvent::Impl::Cocoa::], |
1222 | # IO::Async is rather hard to detect, as it doesn't have any |
1294 | [FLTK:: => AnyEvent::Impl::FLTK2::], |
1223 | # obvious default class. |
|
|
1224 | [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program |
|
|
1225 | [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program |
|
|
1226 | [IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program |
|
|
1227 | [AnyEvent::Impl::IOAsync:: => AnyEvent::Impl::IOAsync::], # requires special main program |
|
|
1228 | ); |
1295 | ); |
1229 | |
1296 | |
1230 | our %method = map +($_ => 1), |
1297 | our @isa_hook; |
|
|
1298 | |
|
|
1299 | sub _isa_set { |
|
|
1300 | my @pkg = ("AnyEvent", (map $_->[0], grep defined, @isa_hook), $MODEL); |
|
|
1301 | |
|
|
1302 | @{"$pkg[$_-1]::ISA"} = $pkg[$_] |
|
|
1303 | for 1 .. $#pkg; |
|
|
1304 | |
|
|
1305 | grep $_ && $_->[1], @isa_hook |
|
|
1306 | and AE::_reset (); |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | # used for hooking AnyEvent::Strict and AnyEvent::Debug::Wrap into the class hierarchy |
|
|
1310 | sub _isa_hook($$;$) { |
|
|
1311 | my ($i, $pkg, $reset_ae) = @_; |
|
|
1312 | |
|
|
1313 | $isa_hook[$i] = $pkg ? [$pkg, $reset_ae] : undef; |
|
|
1314 | |
|
|
1315 | _isa_set; |
|
|
1316 | } |
|
|
1317 | |
|
|
1318 | # all autoloaded methods reserve the complete glob, not just the method slot. |
|
|
1319 | # due to bugs in perls method cache implementation. |
1231 | qw(io timer time now now_update signal child idle condvar one_event DESTROY); |
1320 | our @methods = qw(io timer time now now_update signal child idle condvar); |
1232 | |
|
|
1233 | our @post_detect; |
|
|
1234 | |
|
|
1235 | sub post_detect(&) { |
|
|
1236 | my ($cb) = @_; |
|
|
1237 | |
|
|
1238 | push @post_detect, $cb; |
|
|
1239 | |
|
|
1240 | defined wantarray |
|
|
1241 | ? bless \$cb, "AnyEvent::Util::postdetect" |
|
|
1242 | : () |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | sub AnyEvent::Util::postdetect::DESTROY { |
|
|
1246 | @post_detect = grep $_ != ${$_[0]}, @post_detect; |
|
|
1247 | } |
|
|
1248 | |
1321 | |
1249 | sub detect() { |
1322 | sub detect() { |
|
|
1323 | local $!; # for good measure |
|
|
1324 | local $SIG{__DIE__}; # we use eval |
|
|
1325 | |
1250 | # free some memory |
1326 | # free some memory |
1251 | *detect = sub () { $MODEL }; |
1327 | *detect = sub () { $MODEL }; |
|
|
1328 | # undef &func doesn't correctly update the method cache. grmbl. |
|
|
1329 | # so we delete the whole glob. grmbl. |
|
|
1330 | # otoh, perl doesn't let me undef an active usb, but it lets me free |
|
|
1331 | # a glob with an active sub. hrm. i hope it works, but perl is |
|
|
1332 | # usually buggy in this department. sigh. |
|
|
1333 | delete @{"AnyEvent::"}{@methods}; |
|
|
1334 | undef @methods; |
1252 | |
1335 | |
1253 | local $!; # for good measure |
|
|
1254 | local $SIG{__DIE__}; |
|
|
1255 | |
|
|
1256 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) { |
1336 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z0-9:]+)$/) { |
1257 | my $model = "AnyEvent::Impl::$1"; |
1337 | my $model = $1; |
|
|
1338 | $model = "AnyEvent::Impl::$model" unless $model =~ s/::$//; |
1258 | if (eval "require $model") { |
1339 | if (eval "require $model") { |
1259 | $MODEL = $model; |
1340 | $MODEL = $model; |
1260 | warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2; |
1341 | warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2; |
1261 | } else { |
1342 | } else { |
1262 | warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; |
1343 | warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; |
… | |
… | |
1295 | $MODEL |
1376 | $MODEL |
1296 | or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n"; |
1377 | or die "AnyEvent: backend autodetection failed - did you properly install AnyEvent?\n"; |
1297 | } |
1378 | } |
1298 | } |
1379 | } |
1299 | |
1380 | |
1300 | @models = (); # free probe data |
1381 | # free memory only needed for probing |
|
|
1382 | undef @models; |
|
|
1383 | undef @REGISTRY; |
1301 | |
1384 | |
1302 | push @{"$MODEL\::ISA"}, "AnyEvent::Base"; |
1385 | push @{"$MODEL\::ISA"}, "AnyEvent::Base"; |
1303 | unshift @ISA, $MODEL; |
|
|
1304 | |
1386 | |
1305 | # now nuke some methods that are overridden by the backend. |
1387 | # now nuke some methods that are overridden by the backend. |
1306 | # SUPER is not allowed. |
1388 | # SUPER usage is not allowed in these. |
1307 | for (qw(time signal child idle)) { |
1389 | for (qw(time signal child idle)) { |
1308 | undef &{"AnyEvent::Base::$_"} |
1390 | undef &{"AnyEvent::Base::$_"} |
1309 | if defined &{"$MODEL\::$_"}; |
1391 | if defined &{"$MODEL\::$_"}; |
1310 | } |
1392 | } |
1311 | |
1393 | |
|
|
1394 | _isa_set; |
|
|
1395 | |
1312 | if ($ENV{PERL_ANYEVENT_STRICT}) { |
1396 | if ($ENV{PERL_ANYEVENT_STRICT}) { |
1313 | eval { require AnyEvent::Strict }; |
1397 | require AnyEvent::Strict; |
1314 | warn "AnyEvent: cannot load AnyEvent::Strict: $@" |
|
|
1315 | if $@ && $VERBOSE; |
|
|
1316 | } |
1398 | } |
1317 | |
1399 | |
|
|
1400 | if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) { |
|
|
1401 | require AnyEvent::Debug; |
|
|
1402 | AnyEvent::Debug::wrap ($ENV{PERL_ANYEVENT_DEBUG_WRAP}); |
|
|
1403 | } |
|
|
1404 | |
|
|
1405 | if (exists $ENV{PERL_ANYEVENT_DEBUG_SHELL}) { |
|
|
1406 | require AnyEvent::Socket; |
|
|
1407 | require AnyEvent::Debug; |
|
|
1408 | |
|
|
1409 | my $shell = $ENV{PERL_ANYEVENT_DEBUG_SHELL}; |
|
|
1410 | $shell =~ s/\$\$/$$/g; |
|
|
1411 | |
|
|
1412 | my ($host, $service) = AnyEvent::Socket::parse_hostport ($shell); |
|
|
1413 | $AnyEvent::Debug::SHELL = AnyEvent::Debug::shell ($host, $service); |
|
|
1414 | } |
|
|
1415 | |
1318 | (shift @post_detect)->() while @post_detect; |
1416 | (shift @post_detect)->() while @post_detect; |
|
|
1417 | undef @post_detect; |
1319 | |
1418 | |
1320 | *post_detect = sub(&) { |
1419 | *post_detect = sub(&) { |
1321 | shift->(); |
1420 | shift->(); |
1322 | |
1421 | |
1323 | undef |
1422 | undef |
1324 | }; |
1423 | }; |
1325 | |
1424 | |
1326 | $MODEL |
1425 | $MODEL |
1327 | } |
1426 | } |
1328 | |
1427 | |
1329 | sub AUTOLOAD { |
1428 | for my $name (@methods) { |
1330 | (my $func = $AUTOLOAD) =~ s/.*://; |
1429 | *$name = sub { |
1331 | |
|
|
1332 | $method{$func} |
|
|
1333 | or Carp::croak "$func: not a valid AnyEvent class method"; |
|
|
1334 | |
|
|
1335 | detect; |
1430 | detect; |
1336 | |
1431 | # we use goto because |
1337 | my $class = shift; |
1432 | # a) it makes the thunk more transparent |
1338 | $class->$func (@_); |
1433 | # b) it allows us to delete the thunk later |
|
|
1434 | goto &{ UNIVERSAL::can AnyEvent => "SUPER::$name" } |
|
|
1435 | }; |
1339 | } |
1436 | } |
1340 | |
1437 | |
1341 | # utility function to dup a filehandle. this is used by many backends |
1438 | # utility function to dup a filehandle. this is used by many backends |
1342 | # to support binding more than one watcher per filehandle (they usually |
1439 | # to support binding more than one watcher per filehandle (they usually |
1343 | # allow only one watcher per fd, so we dup it to get a different one). |
1440 | # allow only one watcher per fd, so we dup it to get a different one). |
… | |
… | |
1367 | |
1464 | |
1368 | package AE; |
1465 | package AE; |
1369 | |
1466 | |
1370 | our $VERSION = $AnyEvent::VERSION; |
1467 | our $VERSION = $AnyEvent::VERSION; |
1371 | |
1468 | |
|
|
1469 | sub _reset() { |
|
|
1470 | eval q{ |
1372 | # fall back to the main API by default - backends and AnyEvent::Base |
1471 | # fall back to the main API by default - backends and AnyEvent::Base |
1373 | # implementations can overwrite these. |
1472 | # implementations can overwrite these. |
1374 | |
1473 | |
1375 | sub io($$$) { |
1474 | sub io($$$) { |
1376 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
1475 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
1377 | } |
1476 | } |
1378 | |
1477 | |
1379 | sub timer($$$) { |
1478 | sub timer($$$) { |
1380 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) |
1479 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) |
1381 | } |
1480 | } |
1382 | |
1481 | |
1383 | sub signal($$) { |
1482 | sub signal($$) { |
1384 | AnyEvent->signal (signal => $_[0], cb => $_[1]) |
1483 | AnyEvent->signal (signal => $_[0], cb => $_[1]) |
1385 | } |
1484 | } |
1386 | |
1485 | |
1387 | sub child($$) { |
1486 | sub child($$) { |
1388 | AnyEvent->child (pid => $_[0], cb => $_[1]) |
1487 | AnyEvent->child (pid => $_[0], cb => $_[1]) |
1389 | } |
1488 | } |
1390 | |
1489 | |
1391 | sub idle($) { |
1490 | sub idle($) { |
1392 | AnyEvent->idle (cb => $_[0]) |
1491 | AnyEvent->idle (cb => $_[0]); |
1393 | } |
1492 | } |
1394 | |
1493 | |
1395 | sub cv(;&) { |
1494 | sub cv(;&) { |
1396 | AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) |
1495 | AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) |
1397 | } |
1496 | } |
1398 | |
1497 | |
1399 | sub now() { |
1498 | sub now() { |
1400 | AnyEvent->now |
1499 | AnyEvent->now |
1401 | } |
1500 | } |
1402 | |
1501 | |
1403 | sub now_update() { |
1502 | sub now_update() { |
1404 | AnyEvent->now_update |
1503 | AnyEvent->now_update |
1405 | } |
1504 | } |
1406 | |
1505 | |
1407 | sub time() { |
1506 | sub time() { |
1408 | AnyEvent->time |
1507 | AnyEvent->time |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | *postpone = \&AnyEvent::postpone; |
|
|
1511 | }; |
|
|
1512 | die if $@; |
1409 | } |
1513 | } |
|
|
1514 | |
|
|
1515 | BEGIN { _reset } |
1410 | |
1516 | |
1411 | package AnyEvent::Base; |
1517 | package AnyEvent::Base; |
1412 | |
1518 | |
1413 | # default implementations for many methods |
1519 | # default implementations for many methods |
1414 | |
1520 | |
1415 | sub time { |
1521 | sub time { |
1416 | eval q{ # poor man's autoloading {} |
1522 | eval q{ # poor man's autoloading {} |
1417 | # probe for availability of Time::HiRes |
1523 | # probe for availability of Time::HiRes |
1418 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1524 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1419 | warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; |
1525 | warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; |
|
|
1526 | *time = sub { Time::HiRes::time () }; |
1420 | *AE::time = \&Time::HiRes::time; |
1527 | *AE::time = \& Time::HiRes::time ; |
1421 | # if (eval "use POSIX (); (POSIX::times())... |
1528 | # if (eval "use POSIX (); (POSIX::times())... |
1422 | } else { |
1529 | } else { |
1423 | warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE; |
1530 | warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE; |
|
|
1531 | *time = sub { CORE::time }; |
1424 | *AE::time = sub (){ time }; # epic fail |
1532 | *AE::time = sub (){ CORE::time }; |
1425 | } |
1533 | } |
1426 | |
1534 | |
1427 | *time = sub { AE::time }; # different prototypes |
1535 | *now = \&time; |
1428 | }; |
1536 | }; |
1429 | die if $@; |
1537 | die if $@; |
1430 | |
1538 | |
1431 | &time |
1539 | &time |
1432 | } |
1540 | } |
1433 | |
1541 | |
1434 | *now = \&time; |
1542 | *now = \&time; |
1435 | |
|
|
1436 | sub now_update { } |
1543 | sub now_update { } |
1437 | |
1544 | |
|
|
1545 | sub _poll { |
|
|
1546 | Carp::croak "$AnyEvent::MODEL does not support blocking waits. Caught"; |
|
|
1547 | } |
|
|
1548 | |
1438 | # default implementation for ->condvar |
1549 | # default implementation for ->condvar |
|
|
1550 | # in fact, the default should not be overwritten |
1439 | |
1551 | |
1440 | sub condvar { |
1552 | sub condvar { |
1441 | eval q{ # poor man's autoloading {} |
1553 | eval q{ # poor man's autoloading {} |
1442 | *condvar = sub { |
1554 | *condvar = sub { |
1443 | bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar" |
1555 | bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar" |
… | |
… | |
1613 | : sysread $SIGPIPE_R, (my $dummy), 9; |
1725 | : sysread $SIGPIPE_R, (my $dummy), 9; |
1614 | |
1726 | |
1615 | while (%SIG_EV) { |
1727 | while (%SIG_EV) { |
1616 | for (keys %SIG_EV) { |
1728 | for (keys %SIG_EV) { |
1617 | delete $SIG_EV{$_}; |
1729 | delete $SIG_EV{$_}; |
1618 | $_->() for values %{ $SIG_CB{$_} || {} }; |
1730 | &$_ for values %{ $SIG_CB{$_} || {} }; |
1619 | } |
1731 | } |
1620 | } |
1732 | } |
1621 | }; |
1733 | }; |
1622 | }; |
1734 | }; |
1623 | die if $@; |
1735 | die if $@; |
… | |
… | |
1628 | # default implementation for ->child |
1740 | # default implementation for ->child |
1629 | |
1741 | |
1630 | our %PID_CB; |
1742 | our %PID_CB; |
1631 | our $CHLD_W; |
1743 | our $CHLD_W; |
1632 | our $CHLD_DELAY_W; |
1744 | our $CHLD_DELAY_W; |
1633 | our $WNOHANG; |
|
|
1634 | |
1745 | |
1635 | # used by many Impl's |
1746 | # used by many Impl's |
1636 | sub _emit_childstatus($$) { |
1747 | sub _emit_childstatus($$) { |
1637 | my (undef, $rpid, $rstatus) = @_; |
1748 | my (undef, $rpid, $rstatus) = @_; |
1638 | |
1749 | |
… | |
… | |
1645 | eval q{ # poor man's autoloading {} |
1756 | eval q{ # poor man's autoloading {} |
1646 | *_sigchld = sub { |
1757 | *_sigchld = sub { |
1647 | my $pid; |
1758 | my $pid; |
1648 | |
1759 | |
1649 | AnyEvent->_emit_childstatus ($pid, $?) |
1760 | AnyEvent->_emit_childstatus ($pid, $?) |
1650 | while ($pid = waitpid -1, $WNOHANG) > 0; |
1761 | while ($pid = waitpid -1, WNOHANG) > 0; |
1651 | }; |
1762 | }; |
1652 | |
1763 | |
1653 | *child = sub { |
1764 | *child = sub { |
1654 | my (undef, %arg) = @_; |
1765 | my (undef, %arg) = @_; |
1655 | |
1766 | |
1656 | defined (my $pid = $arg{pid} + 0) |
1767 | my $pid = $arg{pid}; |
1657 | or Carp::croak "required option 'pid' is missing"; |
1768 | my $cb = $arg{cb}; |
1658 | |
1769 | |
1659 | $PID_CB{$pid}{$arg{cb}} = $arg{cb}; |
1770 | $PID_CB{$pid}{$cb+0} = $cb; |
1660 | |
|
|
1661 | # WNOHANG is almost cetrainly 1 everywhere |
|
|
1662 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
|
|
1663 | ? 1 |
|
|
1664 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
|
|
1665 | |
1771 | |
1666 | unless ($CHLD_W) { |
1772 | unless ($CHLD_W) { |
1667 | $CHLD_W = AE::signal CHLD => \&_sigchld; |
1773 | $CHLD_W = AE::signal CHLD => \&_sigchld; |
1668 | # child could be a zombie already, so make at least one round |
1774 | # child could be a zombie already, so make at least one round |
1669 | &_sigchld; |
1775 | &_sigchld; |
1670 | } |
1776 | } |
1671 | |
1777 | |
1672 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
1778 | bless [$pid, $cb+0], "AnyEvent::Base::child" |
1673 | }; |
1779 | }; |
1674 | |
1780 | |
1675 | *AnyEvent::Base::child::DESTROY = sub { |
1781 | *AnyEvent::Base::child::DESTROY = sub { |
1676 | my ($pid, $cb) = @{$_[0]}; |
1782 | my ($pid, $icb) = @{$_[0]}; |
1677 | |
1783 | |
1678 | delete $PID_CB{$pid}{$cb}; |
1784 | delete $PID_CB{$pid}{$icb}; |
1679 | delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} }; |
1785 | delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} }; |
1680 | |
1786 | |
1681 | undef $CHLD_W unless keys %PID_CB; |
1787 | undef $CHLD_W unless keys %PID_CB; |
1682 | }; |
1788 | }; |
1683 | }; |
1789 | }; |
… | |
… | |
1696 | |
1802 | |
1697 | my ($cb, $w, $rcb) = $arg{cb}; |
1803 | my ($cb, $w, $rcb) = $arg{cb}; |
1698 | |
1804 | |
1699 | $rcb = sub { |
1805 | $rcb = sub { |
1700 | if ($cb) { |
1806 | if ($cb) { |
1701 | $w = _time; |
1807 | $w = AE::time; |
1702 | &$cb; |
1808 | &$cb; |
1703 | $w = _time - $w; |
1809 | $w = AE::time - $w; |
1704 | |
1810 | |
1705 | # never use more then 50% of the time for the idle watcher, |
1811 | # never use more then 50% of the time for the idle watcher, |
1706 | # within some limits |
1812 | # within some limits |
1707 | $w = 0.0001 if $w < 0.0001; |
1813 | $w = 0.0001 if $w < 0.0001; |
1708 | $w = 5 if $w > 5; |
1814 | $w = 5 if $w > 5; |
… | |
… | |
1755 | |
1861 | |
1756 | sub _send { |
1862 | sub _send { |
1757 | # nop |
1863 | # nop |
1758 | } |
1864 | } |
1759 | |
1865 | |
|
|
1866 | sub _wait { |
|
|
1867 | AnyEvent->_poll until $_[0]{_ae_sent}; |
|
|
1868 | } |
|
|
1869 | |
1760 | sub send { |
1870 | sub send { |
1761 | my $cv = shift; |
1871 | my $cv = shift; |
1762 | $cv->{_ae_sent} = [@_]; |
1872 | $cv->{_ae_sent} = [@_]; |
1763 | (delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb}; |
1873 | (delete $cv->{_ae_cb})->($cv) if $cv->{_ae_cb}; |
1764 | $cv->_send; |
1874 | $cv->_send; |
… | |
… | |
1771 | |
1881 | |
1772 | sub ready { |
1882 | sub ready { |
1773 | $_[0]{_ae_sent} |
1883 | $_[0]{_ae_sent} |
1774 | } |
1884 | } |
1775 | |
1885 | |
1776 | sub _wait { |
|
|
1777 | $WAITING |
|
|
1778 | and !$_[0]{_ae_sent} |
|
|
1779 | and Carp::croak "AnyEvent::CondVar: recursive blocking wait detected"; |
|
|
1780 | |
|
|
1781 | local $WAITING = 1; |
|
|
1782 | AnyEvent->one_event while !$_[0]{_ae_sent}; |
|
|
1783 | } |
|
|
1784 | |
|
|
1785 | sub recv { |
1886 | sub recv { |
|
|
1887 | unless ($_[0]{_ae_sent}) { |
|
|
1888 | $WAITING |
|
|
1889 | and Carp::croak "AnyEvent::CondVar: recursive blocking wait attempted"; |
|
|
1890 | |
|
|
1891 | local $WAITING = 1; |
1786 | $_[0]->_wait; |
1892 | $_[0]->_wait; |
|
|
1893 | } |
1787 | |
1894 | |
1788 | Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak}; |
1895 | $_[0]{_ae_croak} |
1789 | wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0] |
1896 | and Carp::croak $_[0]{_ae_croak}; |
|
|
1897 | |
|
|
1898 | wantarray |
|
|
1899 | ? @{ $_[0]{_ae_sent} } |
|
|
1900 | : $_[0]{_ae_sent}[0] |
1790 | } |
1901 | } |
1791 | |
1902 | |
1792 | sub cb { |
1903 | sub cb { |
1793 | my $cv = shift; |
1904 | my $cv = shift; |
1794 | |
1905 | |
… | |
… | |
1810 | &{ $_[0]{_ae_end_cb} || sub { $_[0]->send } }; |
1921 | &{ $_[0]{_ae_end_cb} || sub { $_[0]->send } }; |
1811 | } |
1922 | } |
1812 | |
1923 | |
1813 | # undocumented/compatibility with pre-3.4 |
1924 | # undocumented/compatibility with pre-3.4 |
1814 | *broadcast = \&send; |
1925 | *broadcast = \&send; |
1815 | *wait = \&_wait; |
1926 | *wait = \&recv; |
1816 | |
1927 | |
1817 | =head1 ERROR AND EXCEPTION HANDLING |
1928 | =head1 ERROR AND EXCEPTION HANDLING |
1818 | |
1929 | |
1819 | In general, AnyEvent does not do any error handling - it relies on the |
1930 | In general, AnyEvent does not do any error handling - it relies on the |
1820 | caller to do that if required. The L<AnyEvent::Strict> module (see also |
1931 | caller to do that if required. The L<AnyEvent::Strict> module (see also |
… | |
… | |
1872 | Unlike C<use strict> (or its modern cousin, C<< use L<common::sense> |
1983 | Unlike C<use strict> (or its modern cousin, C<< use L<common::sense> |
1873 | >>, it is definitely recommended to keep it off in production. Keeping |
1984 | >>, it is definitely recommended to keep it off in production. Keeping |
1874 | C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs |
1985 | C<PERL_ANYEVENT_STRICT=1> in your environment while developing programs |
1875 | can be very useful, however. |
1986 | can be very useful, however. |
1876 | |
1987 | |
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1988 | =item C<PERL_ANYEVENT_DEBUG_SHELL> |
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1989 | |
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1990 | If this env variable is set, then its contents will be interpreted by |
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1991 | C<AnyEvent::Socket::parse_hostport> (after replacing every occurance of |
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1992 | C<$$> by the process pid) and an C<AnyEvent::Debug::shell> is bound on |
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1993 | that port. The shell object is saved in C<$AnyEvent::Debug::SHELL>. |
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1994 | |
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1995 | This takes place when the first watcher is created. |
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1996 | |
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1997 | For example, to bind a debug shell on a unix domain socket in |
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1998 | F<< /tmp/debug<pid>.sock >>, you could use this: |
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1999 | |
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2000 | PERL_ANYEVENT_DEBUG_SHELL=unix/:/tmp/debug\$\$.sock perlprog |
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2001 | |
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2002 | Note that creating sockets in F</tmp> is very unsafe on multiuser |
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2003 | systems. |
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2004 | |
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2005 | =item C<PERL_ANYEVENT_DEBUG_WRAP> |
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2006 | |
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2007 | Can be set to C<0>, C<1> or C<2> and enables wrapping of all watchers for |
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2008 | debugging purposes. See C<AnyEvent::Debug::wrap> for details. |
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2009 | |
1877 | =item C<PERL_ANYEVENT_MODEL> |
2010 | =item C<PERL_ANYEVENT_MODEL> |
1878 | |
2011 | |
1879 | This can be used to specify the event model to be used by AnyEvent, before |
2012 | This can be used to specify the event model to be used by AnyEvent, before |
1880 | auto detection and -probing kicks in. It must be a string consisting |
2013 | auto detection and -probing kicks in. |
1881 | entirely of ASCII letters. The string C<AnyEvent::Impl::> gets prepended |
2014 | |
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2015 | It normally is a string consisting entirely of ASCII letters (e.g. C<EV> |
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2016 | or C<IOAsync>). The string C<AnyEvent::Impl::> gets prepended and the |
1882 | and the resulting module name is loaded and if the load was successful, |
2017 | resulting module name is loaded and - if the load was successful - used as |
1883 | used as event model. If it fails to load AnyEvent will proceed with |
2018 | event model backend. If it fails to load then AnyEvent will proceed with |
1884 | auto detection and -probing. |
2019 | auto detection and -probing. |
1885 | |
2020 | |
1886 | This functionality might change in future versions. |
2021 | If the string ends with C<::> instead (e.g. C<AnyEvent::Impl::EV::>) then |
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2022 | nothing gets prepended and the module name is used as-is (hint: C<::> at |
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2023 | the end of a string designates a module name and quotes it appropriately). |
1887 | |
2024 | |
1888 | For example, to force the pure perl model (L<AnyEvent::Impl::Perl>) you |
2025 | For example, to force the pure perl model (L<AnyEvent::Loop::Perl>) you |
1889 | could start your program like this: |
2026 | could start your program like this: |
1890 | |
2027 | |
1891 | PERL_ANYEVENT_MODEL=Perl perl ... |
2028 | PERL_ANYEVENT_MODEL=Perl perl ... |
1892 | |
2029 | |
1893 | =item C<PERL_ANYEVENT_PROTOCOLS> |
2030 | =item C<PERL_ANYEVENT_PROTOCOLS> |
… | |
… | |
2283 | (even when used without AnyEvent), but most event loops have acceptable |
2420 | (even when used without AnyEvent), but most event loops have acceptable |
2284 | performance with or without AnyEvent. |
2421 | performance with or without AnyEvent. |
2285 | |
2422 | |
2286 | =item * The overhead AnyEvent adds is usually much smaller than the overhead of |
2423 | =item * The overhead AnyEvent adds is usually much smaller than the overhead of |
2287 | the actual event loop, only with extremely fast event loops such as EV |
2424 | the actual event loop, only with extremely fast event loops such as EV |
2288 | adds AnyEvent significant overhead. |
2425 | does AnyEvent add significant overhead. |
2289 | |
2426 | |
2290 | =item * You should avoid POE like the plague if you want performance or |
2427 | =item * You should avoid POE like the plague if you want performance or |
2291 | reasonable memory usage. |
2428 | reasonable memory usage. |
2292 | |
2429 | |
2293 | =back |
2430 | =back |
… | |
… | |
2592 | |
2729 | |
2593 | =item L<Time::HiRes> |
2730 | =item L<Time::HiRes> |
2594 | |
2731 | |
2595 | This module is part of perl since release 5.008. It will be used when the |
2732 | This module is part of perl since release 5.008. It will be used when the |
2596 | chosen event library does not come with a timing source of its own. The |
2733 | chosen event library does not come with a timing source of its own. The |
2597 | pure-perl event loop (L<AnyEvent::Impl::Perl>) will additionally use it to |
2734 | pure-perl event loop (L<AnyEvent::Loop>) will additionally load it to |
2598 | try to use a monotonic clock for timing stability. |
2735 | try to use a monotonic clock for timing stability. |
2599 | |
2736 | |
2600 | =back |
2737 | =back |
2601 | |
2738 | |
2602 | |
2739 | |
… | |
… | |
2670 | |
2807 | |
2671 | FAQ: L<AnyEvent::FAQ>. |
2808 | FAQ: L<AnyEvent::FAQ>. |
2672 | |
2809 | |
2673 | Utility functions: L<AnyEvent::Util>. |
2810 | Utility functions: L<AnyEvent::Util>. |
2674 | |
2811 | |
2675 | Event modules: L<EV>, L<EV::Glib>, L<Glib::EV>, L<Event>, L<Glib::Event>, |
2812 | Event modules: L<AnyEvent::Loop>, L<EV>, L<EV::Glib>, L<Glib::EV>, |
2676 | L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. |
2813 | L<Event>, L<Glib::Event>, L<Glib>, L<Tk>, L<Event::Lib>, L<Qt>, L<POE>. |
2677 | |
2814 | |
2678 | Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, |
2815 | Implementations: L<AnyEvent::Impl::EV>, L<AnyEvent::Impl::Event>, |
2679 | L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, |
2816 | L<AnyEvent::Impl::Glib>, L<AnyEvent::Impl::Tk>, L<AnyEvent::Impl::Perl>, |
2680 | L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, |
2817 | L<AnyEvent::Impl::EventLib>, L<AnyEvent::Impl::Qt>, |
2681 | L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>. |
2818 | L<AnyEvent::Impl::POE>, L<AnyEvent::Impl::IOAsync>, L<Anyevent::Impl::Irssi>. |