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77 | can use it through the L<AnyEvent> module, stay portable to other event |
77 | can use it through the L<AnyEvent> module, stay portable to other event |
78 | loops (if you don't rely on any watcher types not available through it) |
78 | loops (if you don't rely on any watcher types not available through it) |
79 | and still be faster than with any other event loop currently supported in |
79 | and still be faster than with any other event loop currently supported in |
80 | Perl. |
80 | Perl. |
81 | |
81 | |
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82 | =head2 PORTING FROM EV 3.X to 4.X |
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83 | |
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84 | EV version 4 introduces a number of incompatible changes summarised |
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85 | here. According to the depreciation strategy used by libev, there is a |
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86 | compatibility layer in place so programs should continue to run unchanged |
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87 | (the XS interface lacks this layer, so programs using that one need to be |
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88 | updated). |
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89 | |
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90 | This compatibility layer will be switched off in some future release. |
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91 | |
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92 | All changes relevant to Perl are renames of symbols, functions and |
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93 | methods: |
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94 | |
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95 | EV::loop => EV::run |
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96 | EV::LOOP_NONBLOCK => EV::RUN_NOWAIT |
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97 | EV::LOOP_ONESHOT => EV::RUN_ONCE |
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98 | |
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99 | EV::unloop => EV::break |
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100 | EV::UNLOOP_CANCEL => EV::BREAK_CANCEL |
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101 | EV::UNLOOP_ONE => EV::BREAK_ONE |
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102 | EV::UNLOOP_ALL => EV::BREAK_ALL |
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103 | |
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104 | EV::TIMEOUT => EV::TIMER |
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105 | |
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106 | EV::loop_count => EV::iteration |
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107 | EV::loop_depth => EV::depth |
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108 | EV::loop_verify => EV::verify |
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109 | |
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110 | The loop object methods corresponding to the functions above have been |
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111 | similarly renamed. |
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112 | |
82 | =head2 MODULE EXPORTS |
113 | =head2 MODULE EXPORTS |
83 | |
114 | |
84 | This module does not export any symbols. |
115 | This module does not export any symbols. |
85 | |
116 | |
86 | =cut |
117 | =cut |
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88 | package EV; |
119 | package EV; |
89 | |
120 | |
90 | use common::sense; |
121 | use common::sense; |
91 | |
122 | |
92 | BEGIN { |
123 | BEGIN { |
93 | our $VERSION = '4.00'; |
124 | our $VERSION = '4.03'; |
94 | use XSLoader; |
125 | use XSLoader; |
95 | XSLoader::load "EV", $VERSION; |
126 | XSLoader::load "EV", $VERSION; |
96 | } |
127 | } |
97 | |
128 | |
98 | @EV::IO::ISA = |
129 | @EV::IO::ISA = |
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268 | Begin checking for events and calling callbacks. It returns when a |
299 | Begin checking for events and calling callbacks. It returns when a |
269 | callback calls EV::unloop. |
300 | callback calls EV::unloop. |
270 | |
301 | |
271 | The $flags argument can be one of the following: |
302 | The $flags argument can be one of the following: |
272 | |
303 | |
273 | 0 as above |
304 | 0 as above |
274 | EV::LOOP_ONESHOT block at most once (wait, but do not loop) |
305 | EV::LOOP_ONCE block at most once (wait, but do not loop) |
275 | EV::LOOP_NONBLOCK do not block at all (fetch/handle events but do not wait) |
306 | EV::LOOP_NOWAIT do not block at all (fetch/handle events but do not wait) |
276 | |
307 | |
277 | =item EV::unloop [$how] |
308 | =item EV::break [$how] |
278 | |
309 | |
279 | =item $loop->unloop ([$how]) |
310 | =item $loop->break ([$how]) |
280 | |
311 | |
281 | When called with no arguments or an argument of EV::UNLOOP_ONE, makes the |
312 | When called with no arguments or an argument of EV::BREAK_ONE, makes the |
282 | innermost call to EV::loop return. |
313 | innermost call to EV::loop return. |
283 | |
314 | |
284 | When called with an argument of EV::UNLOOP_ALL, all calls to EV::loop will return as |
315 | When called with an argument of EV::BREAK_ALL, all calls to EV::loop will |
285 | fast as possible. |
316 | return as fast as possible. |
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317 | |
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318 | When called with an argument of EV::BREAK_CANCEL, any pending break will |
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319 | be cancelled. |
286 | |
320 | |
287 | =item $count = EV::loop_count |
321 | =item $count = EV::loop_count |
288 | |
322 | |
289 | =item $count = $loop->loop_count |
323 | =item $count = $loop->loop_count |
290 | |
324 | |
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314 | |
348 | |
315 | EV::once doesn't return anything: the watchers stay active till either |
349 | EV::once doesn't return anything: the watchers stay active till either |
316 | of them triggers, then they will be stopped and freed, and the callback |
350 | of them triggers, then they will be stopped and freed, and the callback |
317 | invoked. |
351 | invoked. |
318 | |
352 | |
319 | =item EV::feed_fd_event ($fd, $revents) |
353 | =item EV::feed_fd_event $fd, $revents |
320 | |
354 | |
321 | =item $loop->feed_fd_event ($fd, $revents) |
355 | =item $loop->feed_fd_event ($fd, $revents) |
322 | |
356 | |
323 | Feed an event on a file descriptor into EV. EV will react to this call as |
357 | Feed an event on a file descriptor into EV. EV will react to this call as |
324 | if the readyness notifications specified by C<$revents> (a combination of |
358 | if the readyness notifications specified by C<$revents> (a combination of |
325 | C<EV::READ> and C<EV::WRITE>) happened on the file descriptor C<$fd>. |
359 | C<EV::READ> and C<EV::WRITE>) happened on the file descriptor C<$fd>. |
326 | |
360 | |
327 | =item EV::feed_signal_event ($signal) |
361 | =item EV::feed_signal_event $signal |
328 | |
362 | |
329 | Feed a signal event into EV. EV will react to this call as if the signal |
363 | Feed a signal event into the default loop. EV will react to this call as |
330 | specified by C<$signal> had occured. |
364 | if the signal specified by C<$signal> had occured. |
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365 | |
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366 | =item EV::feed_signal $signal |
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367 | |
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368 | Feed a signal event into EV - unlike C<EV::feed_signal_event>, this works |
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369 | regardless of which loop has registered the signal, and is mainly useful |
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370 | fro custom signal implementations. |
331 | |
371 | |
332 | =item EV::set_io_collect_interval $time |
372 | =item EV::set_io_collect_interval $time |
333 | |
373 | |
334 | =item $loop->set_io_collect_interval ($time) |
374 | =item $loop->set_io_collect_interval ($time) |
335 | |
375 | |
… | |
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1157 | |
1197 | |
1158 | 1; |
1198 | 1; |
1159 | |
1199 | |
1160 | =head1 SEE ALSO |
1200 | =head1 SEE ALSO |
1161 | |
1201 | |
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1202 | L<EV::MakeMaker> - MakeMaker interface to XS API, L<EV::ADNS> |
1162 | L<EV::ADNS> (asynchronous DNS), L<Glib::EV> (makes Glib/Gtk2 use EV as |
1203 | (asynchronous DNS), L<Glib::EV> (makes Glib/Gtk2 use EV as event |
1163 | event loop), L<EV::Glib> (embed Glib into EV), L<Coro::EV> (efficient |
1204 | loop), L<EV::Glib> (embed Glib into EV), L<Coro::EV> (efficient thread |
1164 | coroutines with EV), L<Net::SNMP::EV> (asynchronous SNMP), L<AnyEvent> for |
1205 | integration), L<Net::SNMP::EV> (asynchronous SNMP), L<AnyEvent> for |
1165 | event-loop agnostic and portable event driven programming. |
1206 | event-loop agnostic and portable event driven programming. |
1166 | |
1207 | |
1167 | =head1 AUTHOR |
1208 | =head1 AUTHOR |
1168 | |
1209 | |
1169 | Marc Lehmann <schmorp@schmorp.de> |
1210 | Marc Lehmann <schmorp@schmorp.de> |