… | |
… | |
2 | |
2 | |
3 | EV - perl interface to libev, a high performance full-featured event loop |
3 | EV - perl interface to libev, a high performance full-featured event loop |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use EV; |
7 | use EV; |
|
|
8 | |
|
|
9 | # TIMERS |
|
|
10 | |
|
|
11 | my $w = EV::timer 2, 0, sub { |
|
|
12 | warn "is called after 2s"; |
|
|
13 | }; |
|
|
14 | |
|
|
15 | my $w = EV::timer 2, 2, sub { |
|
|
16 | warn "is called roughly every 2s (repeat = 2)"; |
|
|
17 | }; |
|
|
18 | |
|
|
19 | undef $w; # destroy event watcher again |
|
|
20 | |
|
|
21 | my $w = EV::periodic 0, 60, 0, sub { |
|
|
22 | warn "is called every minute, on the minute, exactly"; |
|
|
23 | }; |
|
|
24 | |
|
|
25 | # IO |
|
|
26 | |
|
|
27 | my $w = EV::io *STDIN, EV::READ, sub { |
|
|
28 | my ($w, $revents) = @_; # all callbacks receive the watcher and event mask |
|
|
29 | warn "stdin is readable, you entered: ", <STDIN>; |
|
|
30 | }; |
|
|
31 | |
|
|
32 | # SIGNALS |
|
|
33 | |
|
|
34 | my $w = EV::signal 'QUIT', sub { |
|
|
35 | warn "sigquit received\n"; |
|
|
36 | }; |
|
|
37 | |
|
|
38 | # CHILD/PID STATUS CHANGES |
8 | |
39 | |
9 | # TIMERS |
40 | my $w = EV::child 666, 0, sub { |
|
|
41 | my ($w, $revents) = @_; |
|
|
42 | my $status = $w->rstatus; |
|
|
43 | }; |
10 | |
44 | |
11 | my $w = EV::timer 2, 0, sub { |
|
|
12 | warn "is called after 2s"; |
|
|
13 | }; |
|
|
14 | |
|
|
15 | my $w = EV::timer 2, 2, sub { |
|
|
16 | warn "is called roughly every 2s (repeat = 2)"; |
|
|
17 | }; |
|
|
18 | |
|
|
19 | undef $w; # destroy event watcher again |
|
|
20 | |
|
|
21 | my $w = EV::periodic 0, 60, 0, sub { |
|
|
22 | warn "is called every minute, on the minute, exactly"; |
|
|
23 | }; |
|
|
24 | |
|
|
25 | # IO |
|
|
26 | |
|
|
27 | my $w = EV::io *STDIN, EV::READ, sub { |
|
|
28 | my ($w, $revents) = @_; # all callbacks receive the watcher and event mask |
|
|
29 | warn "stdin is readable, you entered: ", <STDIN>; |
|
|
30 | }; |
|
|
31 | |
|
|
32 | # SIGNALS |
|
|
33 | |
|
|
34 | my $w = EV::signal 'QUIT', sub { |
|
|
35 | warn "sigquit received\n"; |
|
|
36 | }; |
|
|
37 | |
|
|
38 | # CHILD/PID STATUS CHANGES |
|
|
39 | |
|
|
40 | my $w = EV::child 666, 0, sub { |
|
|
41 | my ($w, $revents) = @_; |
|
|
42 | my $status = $w->rstatus; |
|
|
43 | }; |
|
|
44 | |
|
|
45 | # STAT CHANGES |
45 | # STAT CHANGES |
46 | my $w = EV::stat "/etc/passwd", 10, sub { |
46 | my $w = EV::stat "/etc/passwd", 10, sub { |
47 | my ($w, $revents) = @_; |
47 | my ($w, $revents) = @_; |
48 | warn $w->path, " has changed somehow.\n"; |
48 | warn $w->path, " has changed somehow.\n"; |
49 | }; |
49 | }; |
50 | |
50 | |
51 | # MAINLOOP |
51 | # MAINLOOP |
52 | EV::loop; # loop until EV::unloop is called or all watchers stop |
52 | EV::loop; # loop until EV::unloop is called or all watchers stop |
53 | EV::loop EV::LOOP_ONESHOT; # block until at least one event could be handled |
53 | EV::loop EV::LOOP_ONESHOT; # block until at least one event could be handled |
54 | EV::loop EV::LOOP_NONBLOCK; # try to handle same events, but do not block |
54 | EV::loop EV::LOOP_NONBLOCK; # try to handle same events, but do not block |
55 | |
55 | |
56 | =head1 DESCRIPTION |
56 | =head1 DESCRIPTION |
57 | |
57 | |
58 | This module provides an interface to libev |
58 | This module provides an interface to libev |
59 | (L<http://software.schmorp.de/pkg/libev.html>). While the documentation |
59 | (L<http://software.schmorp.de/pkg/libev.html>). While the documentation |
60 | below is comprehensive, one might also consult the documentation of libev |
60 | below is comprehensive, one might also consult the documentation of |
61 | itself (L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod>) for more |
61 | libev itself (L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod> or |
62 | subtle details on watcher semantics or some discussion on the available |
62 | F<perldoc EV::libev>) for more subtle details on watcher semantics or some |
63 | backends, or how to force a specific backend with C<LIBEV_FLAGS>, or just |
63 | discussion on the available backends, or how to force a specific backend |
64 | about in any case because it has much more detailed information. |
64 | with C<LIBEV_FLAGS>, or just about in any case because it has much more |
|
|
65 | detailed information. |
65 | |
66 | |
66 | This module is very fast and scalable. It is actually so fast that you |
67 | This module is very fast and scalable. It is actually so fast that you |
67 | can use it through the L<AnyEvent> module, stay portable to other event |
68 | can use it through the L<AnyEvent> module, stay portable to other event |
68 | loops (if you don't rely on any watcher types not available through it) |
69 | loops (if you don't rely on any watcher types not available through it) |
69 | and still be faster than with any other event loop currently supported in |
70 | and still be faster than with any other event loop currently supported in |
70 | Perl. |
71 | Perl. |
71 | |
72 | |
|
|
73 | =head2 MODULE EXPORTS |
|
|
74 | |
|
|
75 | This module does not export any symbols. |
|
|
76 | |
72 | =cut |
77 | =cut |
73 | |
78 | |
74 | package EV; |
79 | package EV; |
75 | |
80 | |
|
|
81 | no warnings; |
76 | use strict; |
82 | use strict; |
77 | |
83 | |
78 | BEGIN { |
84 | BEGIN { |
79 | our $VERSION = '3.4'; |
85 | our $VERSION = '3.53'; |
80 | use XSLoader; |
86 | use XSLoader; |
81 | XSLoader::load "EV", $VERSION; |
87 | XSLoader::load "EV", $VERSION; |
82 | } |
88 | } |
83 | |
89 | |
84 | @EV::IO::ISA = |
90 | @EV::IO::ISA = |
… | |
… | |
111 | default loop as this is fastest (perl-wise), best supported by other |
117 | default loop as this is fastest (perl-wise), best supported by other |
112 | modules (e.g. AnyEvent or Coro) and most portable event loop. |
118 | modules (e.g. AnyEvent or Coro) and most portable event loop. |
113 | |
119 | |
114 | For specific programs you can create additional event loops dynamically. |
120 | For specific programs you can create additional event loops dynamically. |
115 | |
121 | |
116 | =over 4 |
122 | If you want to take advantage of kqueue (which often works properly for |
|
|
123 | sockets only) even though the default loop doesn't enable it, you can |
|
|
124 | I<embed> a kqueue loop into the default loop: running the default loop |
|
|
125 | will then also service the kqueue loop to some extent. See the example in |
|
|
126 | the section about embed watchers for an example on how to achieve that. |
117 | |
127 | |
|
|
128 | =over 4 |
|
|
129 | |
118 | =item $loop = new EV::loop [$flags] |
130 | =item $loop = new EV::Loop [$flags] |
119 | |
131 | |
120 | Create a new event loop as per the specified flags. Please refer to the |
132 | Create a new event loop as per the specified flags. Please refer to |
121 | C<ev_loop_new ()> function description in the libev documentation |
133 | the C<ev_loop_new ()> function description in the libev documentation |
122 | (L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#GLOBAL_FUNCTIONS>) |
134 | (L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#GLOBAL_FUNCTIONS>, |
123 | for more info. |
135 | or locally-installed as F<EV::libev> manpage) for more info. |
124 | |
136 | |
125 | The loop will automatically be destroyed when it is no longer referenced |
137 | The loop will automatically be destroyed when it is no longer referenced |
126 | by any watcher and the loop object goes out of scope. |
138 | by any watcher and the loop object goes out of scope. |
127 | |
139 | |
128 | Using C<EV::FLAG_FORKCHECK> is recommended, as only the default event loop |
140 | If you are not embedding the loop, then Using C<EV::FLAG_FORKCHECK> |
129 | is protected by this module. |
141 | is recommended, as only the default event loop is protected by this |
|
|
142 | module. If you I<are> embedding this loop in the default loop, this is not |
|
|
143 | necessary, as C<EV::embed> automatically does the right thing on fork. |
130 | |
144 | |
131 | =item $loop->loop_fork |
145 | =item $loop->loop_fork |
132 | |
146 | |
133 | Must be called after a fork in the child, before entering or continuing |
147 | Must be called after a fork in the child, before entering or continuing |
134 | the event loop. An alternative is to use C<EV::FLAG_FORKCHECK> which calls |
148 | the event loop. An alternative is to use C<EV::FLAG_FORKCHECK> which calls |
135 | this fucntion automatically, at some performance loss (refer to the libev |
149 | this function automatically, at some performance loss (refer to the libev |
136 | documentation). |
150 | documentation). |
137 | |
151 | |
|
|
152 | =item $loop->loop_verify |
|
|
153 | |
|
|
154 | Calls C<ev_verify> to make internal consistency checks (for debugging |
|
|
155 | libev) and abort the program if any data structures were found to be |
|
|
156 | corrupted. |
|
|
157 | |
138 | =item $loop = EV::default_loop [$flags] |
158 | =item $loop = EV::default_loop [$flags] |
139 | |
159 | |
140 | Return the default loop (which is a singleton object). |
160 | Return the default loop (which is a singleton object). Since this module |
|
|
161 | already creates the default loop with default flags, specifying flags here |
|
|
162 | will not have any effect unless you destroy the default loop first, which |
|
|
163 | isn't supported. So in short: don't do it, and if you break it, you get to |
|
|
164 | keep the pieces. |
141 | |
165 | |
142 | =back |
166 | =back |
143 | |
167 | |
144 | |
168 | |
145 | =head1 BASIC INTERFACE |
169 | =head1 BASIC INTERFACE |
… | |
… | |
175 | =item $time = EV::now |
199 | =item $time = EV::now |
176 | |
200 | |
177 | =item $time = $loop->now |
201 | =item $time = $loop->now |
178 | |
202 | |
179 | Returns the time the last event loop iteration has been started. This |
203 | Returns the time the last event loop iteration has been started. This |
180 | is the time that (relative) timers are based on, and refering to it is |
204 | is the time that (relative) timers are based on, and referring to it is |
181 | usually faster then calling EV::time. |
205 | usually faster then calling EV::time. |
182 | |
206 | |
|
|
207 | =item EV::now_update |
|
|
208 | |
|
|
209 | =item $loop->now_update |
|
|
210 | |
|
|
211 | Establishes the current time by querying the kernel, updating the time |
|
|
212 | returned by C<EV::now> in the progress. This is a costly operation and |
|
|
213 | is usually done automatically within C<EV::loop>. |
|
|
214 | |
|
|
215 | This function is rarely useful, but when some event callback runs for a |
|
|
216 | very long time without entering the event loop, updating libev's idea of |
|
|
217 | the current time is a good idea. |
|
|
218 | |
|
|
219 | =item EV::suspend |
|
|
220 | |
|
|
221 | =item $loop->suspend |
|
|
222 | |
|
|
223 | =item EV::resume |
|
|
224 | |
|
|
225 | =item $loop->resume |
|
|
226 | |
|
|
227 | These two functions suspend and resume a loop, for use when the loop is |
|
|
228 | not used for a while and timeouts should not be processed. |
|
|
229 | |
|
|
230 | A typical use case would be an interactive program such as a game: When |
|
|
231 | the user presses C<^Z> to suspend the game and resumes it an hour later it |
|
|
232 | would be best to handle timeouts as if no time had actually passed while |
|
|
233 | the program was suspended. This can be achieved by calling C<suspend> |
|
|
234 | in your C<SIGTSTP> handler, sending yourself a C<SIGSTOP> and calling |
|
|
235 | C<resume> directly afterwards to resume timer processing. |
|
|
236 | |
|
|
237 | Effectively, all C<timer> watchers will be delayed by the time spend |
|
|
238 | between C<suspend> and C<resume>, and all C<periodic> watchers |
|
|
239 | will be rescheduled (that is, they will lose any events that would have |
|
|
240 | occured while suspended). |
|
|
241 | |
|
|
242 | After calling C<suspend> you B<must not> call I<any> function on the given |
|
|
243 | loop other than C<resume>, and you B<must not> call C<resume> |
|
|
244 | without a previous call to C<suspend>. |
|
|
245 | |
|
|
246 | Calling C<suspend>/C<resume> has the side effect of updating the event |
|
|
247 | loop time (see C<now_update>). |
|
|
248 | |
183 | =item $backend = EV::backend |
249 | =item $backend = EV::backend |
184 | |
250 | |
185 | =item $backend = $loop->backend |
251 | =item $backend = $loop->backend |
186 | |
252 | |
187 | Returns an integer describing the backend used by libev (EV::METHOD_SELECT |
253 | Returns an integer describing the backend used by libev (EV::BACKEND_SELECT |
188 | or EV::METHOD_EPOLL). |
254 | or EV::BACKEND_EPOLL). |
189 | |
255 | |
190 | =item EV::loop [$flags] |
256 | =item EV::loop [$flags] |
191 | |
257 | |
192 | =item $loop->loop ([$flags]) |
258 | =item $loop->loop ([$flags]) |
193 | |
259 | |
… | |
… | |
213 | =item $count = EV::loop_count |
279 | =item $count = EV::loop_count |
214 | |
280 | |
215 | =item $count = $loop->loop_count |
281 | =item $count = $loop->loop_count |
216 | |
282 | |
217 | Return the number of times the event loop has polled for new |
283 | Return the number of times the event loop has polled for new |
218 | events. Sometiems useful as a generation counter. |
284 | events. Sometimes useful as a generation counter. |
219 | |
285 | |
220 | =item EV::once $fh_or_undef, $events, $timeout, $cb->($revents) |
286 | =item EV::once $fh_or_undef, $events, $timeout, $cb->($revents) |
221 | |
287 | |
222 | =item $loop->once ($fh_or_undef, $events, $timeout, $cb->($revents)) |
288 | =item $loop->once ($fh_or_undef, $events, $timeout, $cb->($revents)) |
223 | |
289 | |
… | |
… | |
263 | |
329 | |
264 | =item $loop->set_timeout_collect_interval ($time) |
330 | =item $loop->set_timeout_collect_interval ($time) |
265 | |
331 | |
266 | These advanced functions set the minimum block interval when polling for I/O events and the minimum |
332 | These advanced functions set the minimum block interval when polling for I/O events and the minimum |
267 | wait interval for timer events. See the libev documentation at |
333 | wait interval for timer events. See the libev documentation at |
268 | L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#FUNCTIONS_CONTROLLING_THE_EVENT_LOOP> for |
334 | L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#FUNCTIONS_CONTROLLING_THE_EVENT_LOOP> |
269 | a more detailed discussion. |
335 | (locally installed as F<EV::libev>) for a more detailed discussion. |
270 | |
336 | |
271 | =back |
337 | =back |
272 | |
338 | |
273 | |
339 | |
274 | =head1 WATCHER OBJECTS |
340 | =head1 WATCHER OBJECTS |
275 | |
341 | |
276 | A watcher is an object that gets created to record your interest in some |
342 | A watcher is an object that gets created to record your interest in some |
277 | event. For instance, if you want to wait for STDIN to become readable, you |
343 | event. For instance, if you want to wait for STDIN to become readable, you |
278 | would create an EV::io watcher for that: |
344 | would create an EV::io watcher for that: |
279 | |
345 | |
280 | my $watcher = EV::io *STDIN, EV::READ, sub { |
346 | my $watcher = EV::io *STDIN, EV::READ, sub { |
281 | my ($watcher, $revents) = @_; |
347 | my ($watcher, $revents) = @_; |
282 | warn "yeah, STDIN should now be readable without blocking!\n" |
348 | warn "yeah, STDIN should now be readable without blocking!\n" |
283 | }; |
349 | }; |
284 | |
350 | |
285 | All watchers can be active (waiting for events) or inactive (paused). Only |
351 | All watchers can be active (waiting for events) or inactive (paused). Only |
286 | active watchers will have their callbacks invoked. All callbacks will be |
352 | active watchers will have their callbacks invoked. All callbacks will be |
287 | called with at least two arguments: the watcher and a bitmask of received |
353 | called with at least two arguments: the watcher and a bitmask of received |
288 | events. |
354 | events. |
289 | |
355 | |
290 | Each watcher type has its associated bit in revents, so you can use the |
356 | Each watcher type has its associated bit in revents, so you can use the |
291 | same callback for multiple watchers. The event mask is named after the |
357 | same callback for multiple watchers. The event mask is named after the |
292 | type, i..e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE, |
358 | type, i.e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE, |
293 | EV::periodic sets EV::PERIODIC and so on, with the exception of I/O events |
359 | EV::periodic sets EV::PERIODIC and so on, with the exception of I/O events |
294 | (which can set both EV::READ and EV::WRITE bits), and EV::timer (which |
360 | (which can set both EV::READ and EV::WRITE bits), and EV::timer (which |
295 | uses EV::TIMEOUT). |
361 | uses EV::TIMEOUT). |
296 | |
362 | |
297 | In the rare case where one wants to create a watcher but not start it at |
363 | In the rare case where one wants to create a watcher but not start it at |
… | |
… | |
393 | because you happen to have this long-running UDP port watcher. |
459 | because you happen to have this long-running UDP port watcher. |
394 | |
460 | |
395 | In this case you can clear the keepalive status, which means that even |
461 | In this case you can clear the keepalive status, which means that even |
396 | though your watcher is active, it won't keep C<EV::loop> from returning. |
462 | though your watcher is active, it won't keep C<EV::loop> from returning. |
397 | |
463 | |
398 | The initial value for keepalive is true (enabled), and you cna change it |
464 | The initial value for keepalive is true (enabled), and you can change it |
399 | any time. |
465 | any time. |
400 | |
466 | |
401 | Example: Register an I/O watcher for some UDP socket but do not keep the |
467 | Example: Register an I/O watcher for some UDP socket but do not keep the |
402 | event loop from running just because of that watcher. |
468 | event loop from running just because of that watcher. |
403 | |
469 | |
404 | my $udp_socket = ... |
470 | my $udp_socket = ... |
405 | my $udp_watcher = EV::io $udp_socket, EV::READ, sub { ... }; |
471 | my $udp_watcher = EV::io $udp_socket, EV::READ, sub { ... }; |
406 | $1000udp_watcher->keepalive (0); |
472 | $udp_watcher->keepalive (0); |
407 | |
473 | |
408 | =item $loop = $w->loop |
474 | =item $loop = $w->loop |
409 | |
475 | |
410 | Return the loop that this watcher is attached to. |
476 | Return the loop that this watcher is attached to. |
411 | |
477 | |
… | |
… | |
568 | time the periodic watcher gets scheduled, the reschedule callback |
634 | time the periodic watcher gets scheduled, the reschedule callback |
569 | ($reschedule_cb) will be called with the watcher as first, and the current |
635 | ($reschedule_cb) will be called with the watcher as first, and the current |
570 | time as second argument. |
636 | time as second argument. |
571 | |
637 | |
572 | I<This callback MUST NOT stop or destroy this or any other periodic |
638 | I<This callback MUST NOT stop or destroy this or any other periodic |
573 | watcher, ever>. If you need to stop it, return 1e30 and stop it |
639 | watcher, ever, and MUST NOT call any event loop functions or methods>. If |
574 | afterwards. |
640 | you need to stop it, return 1e30 and stop it afterwards. You may create |
|
|
641 | and start a C<EV::prepare> watcher for this task. |
575 | |
642 | |
576 | It must return the next time to trigger, based on the passed time value |
643 | It must return the next time to trigger, based on the passed time value |
577 | (that is, the lowest time value larger than to the second argument). It |
644 | (that is, the lowest time value larger than or equal to to the second |
578 | will usually be called just before the callback will be triggered, but |
645 | argument). It will usually be called just before the callback will be |
579 | might be called at other times, too. |
646 | triggered, but might be called at other times, too. |
580 | |
647 | |
581 | This can be used to create very complex timers, such as a timer that |
648 | This can be used to create very complex timers, such as a timer that |
582 | triggers on each midnight, local time (actually 24 hours after the last |
649 | triggers on each midnight, local time (actually 24 hours after the last |
583 | midnight, to keep the example simple. If you know a way to do it correctly |
650 | midnight, to keep the example simple. If you know a way to do it correctly |
584 | in about the same space (without requiring elaborate modules), drop me a |
651 | in about the same space (without requiring elaborate modules), drop me a |
… | |
… | |
896 | # make the dispatcher handle any new stuff |
963 | # make the dispatcher handle any new stuff |
897 | ... not shown |
964 | ... not shown |
898 | }; |
965 | }; |
899 | |
966 | |
900 | The callbacks of the created watchers will not be called as the watchers |
967 | The callbacks of the created watchers will not be called as the watchers |
901 | are destroyed before this cna happen (remember EV::check gets called |
968 | are destroyed before this can happen (remember EV::check gets called |
902 | first). |
969 | first). |
903 | |
970 | |
904 | The C<check_ns> variant doesn't start (activate) the newly created watcher. |
971 | The C<check_ns> variant doesn't start (activate) the newly created watcher. |
905 | |
972 | |
906 | =back |
973 | =back |
… | |
… | |
937 | loop, other types of watchers might be handled in a delayed or incorrect |
1004 | loop, other types of watchers might be handled in a delayed or incorrect |
938 | fashion and must not be used). |
1005 | fashion and must not be used). |
939 | |
1006 | |
940 | See the libev documentation at |
1007 | See the libev documentation at |
941 | L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#code_ev_embed_code_when_one_backend_> |
1008 | L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#code_ev_embed_code_when_one_backend_> |
942 | for more details. |
1009 | (locally installed as F<EV::libev>) for more details. |
943 | |
1010 | |
944 | In short, this watcher is most useful on BSD systems without working |
1011 | In short, this watcher is most useful on BSD systems without working |
945 | kqueue to still be able to handle a large number of sockets: |
1012 | kqueue to still be able to handle a large number of sockets: |
946 | |
1013 | |
947 | my $socket_loop; |
1014 | my $socket_loop; |
948 | |
1015 | |
949 | # check wether we use SELECT or POLL _and_ KQUEUE is supported |
1016 | # check wether we use SELECT or POLL _and_ KQUEUE is supported |
950 | if ( |
1017 | if ( |
951 | (EV::backend & (EV::BACKEND_POLL | EV::BACKEND_SELECT)) |
1018 | (EV::backend & (EV::BACKEND_POLL | EV::BACKEND_SELECT)) |
952 | && (EV::supported_backends & EV::embeddable_backends & EV::BACKEND_KQUEUE) |
1019 | && (EV::supported_backends & EV::embeddable_backends & EV::BACKEND_KQUEUE) |
953 | ) { |
1020 | ) { |
954 | # use kqueue for sockets |
1021 | # use kqueue for sockets |
955 | $socket_loop = new EV::Loop EV::BACKEND_KQUEUE | EV::FLAG_NOENV; |
1022 | $socket_loop = new EV::Loop EV::BACKEND_KQUEUE | EV::FLAG_NOENV; |
956 | } |
1023 | } |
957 | |
1024 | |
958 | # use the default loop otherwise |
1025 | # use the default loop otherwise |
959 | $socket_loop ||= EV::default_loop; |
1026 | $socket_loop ||= EV::default_loop; |
960 | |
1027 | |
961 | =over 4 |
1028 | =over 4 |
962 | |
1029 | |
963 | =item $w = EV::embed $otherloop, $callback |
1030 | =item $w = EV::embed $otherloop[, $callback] |
964 | |
1031 | |
965 | =item $w = EV::embed_ns $otherloop, $callback |
1032 | =item $w = EV::embed_ns $otherloop[, $callback] |
966 | |
1033 | |
967 | =item $w = $loop->embed ($otherloop, $callback) |
1034 | =item $w = $loop->embed ($otherloop[, $callback]) |
968 | |
1035 | |
969 | =item $w = $loop->embed_ns ($otherloop, $callback) |
1036 | =item $w = $loop->embed_ns ($otherloop[, $callback]) |
970 | |
1037 | |
971 | Call the callback when the embedded event loop (C<$otherloop>) has any |
1038 | Call the callback when the embedded event loop (C<$otherloop>) has any |
972 | I/O activity. The C<$callback> should alwas be specified as C<undef> in |
1039 | I/O activity. The C<$callback> is optional: if it is missing, then the |
973 | this version of EV, which means the embedded event loop will be managed |
1040 | embedded event loop will be managed automatically (which is recommended), |
974 | automatically. |
1041 | otherwise you have to invoke C<sweep> yourself. |
975 | |
1042 | |
976 | The C<embed_ns> variant doesn't start (activate) the newly created watcher. |
1043 | The C<embed_ns> variant doesn't start (activate) the newly created watcher. |
977 | |
1044 | |
978 | =back |
1045 | =back |
979 | |
1046 | |
… | |
… | |
1060 | coroutines with EV), L<Net::SNMP::EV> (asynchronous SNMP), L<AnyEvent> for |
1127 | coroutines with EV), L<Net::SNMP::EV> (asynchronous SNMP), L<AnyEvent> for |
1061 | event-loop agnostic and portable event driven programming. |
1128 | event-loop agnostic and portable event driven programming. |
1062 | |
1129 | |
1063 | =head1 AUTHOR |
1130 | =head1 AUTHOR |
1064 | |
1131 | |
1065 | Marc Lehmann <schmorp@schmorp.de> |
1132 | Marc Lehmann <schmorp@schmorp.de> |
1066 | http://home.schmorp.de/ |
1133 | http://home.schmorp.de/ |
1067 | |
1134 | |
1068 | =cut |
1135 | =cut |
1069 | |
1136 | |