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Revision 1.15 by root, Wed Dec 5 14:06:50 2007 UTC vs.
Revision 1.20 by root, Sat Dec 22 12:05:42 2007 UTC

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56 This module provides an interface to libev 56 This module provides an interface to libev
57 (<http://software.schmorp.de/pkg/libev.html>). While the documentation 57 (<http://software.schmorp.de/pkg/libev.html>). While the documentation
58 below is comprehensive, one might also consult the documentation of 58 below is comprehensive, one might also consult the documentation of
59 libev itself (<http://cvs.schmorp.de/libev/ev.html>) for more subtle 59 libev itself (<http://cvs.schmorp.de/libev/ev.html>) for more subtle
60 details on watcher semantics or some discussion on the available 60 details on watcher semantics or some discussion on the available
61 backends, or how to force a specific backend with "LIBEV_FLAGS". 61 backends, or how to force a specific backend with "LIBEV_FLAGS", or just
62 about in any case because it has much more detailed information.
63
64EVENT LOOPS
65 EV supports multiple event loops: There is a single "default event loop"
66 that can handle everything including signals and child watchers, and any
67 number of "dynamic event loops" that can use different backends (with
68 various limitations), but no child and signal watchers.
69
70 You do not have to do anything to create the default event loop: When
71 the module is loaded a suitable backend is selected on the premise of
72 selecting a working backend (which for example rules out kqueue on most
73 BSDs). Modules should, unless they have "special needs" always use the
74 default loop as this is fastest (perl-wise), best supported by other
75 modules (e.g. AnyEvent or Coro) and most portable event loop.
76
77 For specific programs you cna create additional event loops dynamically.
78
79 $loop = new EV::loop [$flags]
80 Create a new event loop as per the specified flags. Please refer to
81 the "ev_loop_new ()" function description in the libev documentation
82 (<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#GLOBAL_FUNCTI
83 ONS>) for more info.
84
85 The loop will automatically be destroyed when it is no longer
86 referenced by any watcher and the loop object goes out of scope.
87
88 Using "EV::FLAG_FORKCHECK" is recommended, as only the default event
89 loop is protected by this module.
90
91 $loop->loop_fork
92 Must be called after a fork in the child, before entering or
93 continuing the event loop. An alternative is to use
94 "EV::FLAG_FORKCHECK" which calls this fucntion automatically, at
95 some performance loss (refer to the libev documentation).
62 96
63BASIC INTERFACE 97BASIC INTERFACE
64 $EV::DIED 98 $EV::DIED
65 Must contain a reference to a function that is called when a 99 Must contain a reference to a function that is called when a
66 callback throws an exception (with $@ containing thr error). The 100 callback throws an exception (with $@ containing the error). The
67 default prints an informative message and continues. 101 default prints an informative message and continues.
68 102
69 If this callback throws an exception it will be silently ignored. 103 If this callback throws an exception it will be silently ignored.
70 104
71 $time = EV::time 105 $time = EV::time
72 Returns the current time in (fractional) seconds since the epoch. 106 Returns the current time in (fractional) seconds since the epoch.
73 107
74 $time = EV::now 108 $time = EV::now
109 $time = $loop->now
75 Returns the time the last event loop iteration has been started. 110 Returns the time the last event loop iteration has been started.
76 This is the time that (relative) timers are based on, and refering 111 This is the time that (relative) timers are based on, and refering
77 to it is usually faster then calling EV::time. 112 to it is usually faster then calling EV::time.
78 113
79 $method = EV::method 114 $backend = EV::backend
115 $backend = $loop->backend
80 Returns an integer describing the backend used by libev 116 Returns an integer describing the backend used by libev
81 (EV::METHOD_SELECT or EV::METHOD_EPOLL). 117 (EV::METHOD_SELECT or EV::METHOD_EPOLL).
82 118
83 EV::loop [$flags] 119 EV::loop [$flags]
120 $loop->loop ([$flags])
84 Begin checking for events and calling callbacks. It returns when a 121 Begin checking for events and calling callbacks. It returns when a
85 callback calls EV::unloop. 122 callback calls EV::unloop.
86 123
87 The $flags argument can be one of the following: 124 The $flags argument can be one of the following:
88 125
89 0 as above 126 0 as above
90 EV::LOOP_ONESHOT block at most once (wait, but do not loop) 127 EV::LOOP_ONESHOT block at most once (wait, but do not loop)
91 EV::LOOP_NONBLOCK do not block at all (fetch/handle events but do not wait) 128 EV::LOOP_NONBLOCK do not block at all (fetch/handle events but do not wait)
92 129
93 EV::unloop [$how] 130 EV::unloop [$how]
131 $loop->unloop ([$how])
94 When called with no arguments or an argument of EV::UNLOOP_ONE, 132 When called with no arguments or an argument of EV::UNLOOP_ONE,
95 makes the innermost call to EV::loop return. 133 makes the innermost call to EV::loop return.
96 134
97 When called with an argument of EV::UNLOOP_ALL, all calls to 135 When called with an argument of EV::UNLOOP_ALL, all calls to
98 EV::loop will return as fast as possible. 136 EV::loop will return as fast as possible.
99 137
100 $count = EV::loop_count 138 $count = EV::loop_count
139 $count = $loop->loop_count
101 Return the number of times the event loop has polled for new events. 140 Return the number of times the event loop has polled for new events.
102 Sometiems useful as a generation counter. 141 Sometiems useful as a generation counter.
103 142
104 EV::once $fh_or_undef, $events, $timeout, $cb->($revents) 143 EV::once $fh_or_undef, $events, $timeout, $cb->($revents)
144 $loop->once ($fh_or_undef, $events, $timeout, $cb->($revents))
105 This function rolls together an I/O and a timer watcher for a single 145 This function rolls together an I/O and a timer watcher for a single
106 one-shot event without the need for managing a watcher object. 146 one-shot event without the need for managing a watcher object.
107 147
108 If $fh_or_undef is a filehandle or file descriptor, then $events 148 If $fh_or_undef is a filehandle or file descriptor, then $events
109 must be a bitset containing either "EV::READ", "EV::WRITE" or 149 must be a bitset containing either "EV::READ", "EV::WRITE" or
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114 If timeout is "undef" or negative, then there will be no timeout. 154 If timeout is "undef" or negative, then there will be no timeout.
115 Otherwise a EV::timer with this value will be started. 155 Otherwise a EV::timer with this value will be started.
116 156
117 When an error occurs or either the timeout or I/O watcher triggers, 157 When an error occurs or either the timeout or I/O watcher triggers,
118 then the callback will be called with the received event set (in 158 then the callback will be called with the received event set (in
119 general you can expect it to be a combination of "EV:ERROR", 159 general you can expect it to be a combination of "EV::ERROR",
120 "EV::READ", "EV::WRITE" and "EV::TIMEOUT"). 160 "EV::READ", "EV::WRITE" and "EV::TIMEOUT").
121 161
122 EV::once doesn't return anything: the watchers stay active till 162 EV::once doesn't return anything: the watchers stay active till
123 either of them triggers, then they will be stopped and freed, and 163 either of them triggers, then they will be stopped and freed, and
124 the callback invoked. 164 the callback invoked.
125 165
166 EV::feed_fd_event ($fd, $revents)
167 $loop->feed_fd_event ($fd, $revents)
168 Feed an event on a file descriptor into EV. EV will react to this
169 call as if the readyness notifications specified by $revents (a
170 combination of "EV::READ" and "EV::WRITE") happened on the file
171 descriptor $fd.
172
173 EV::feed_signal_event ($signal)
174 Feed a signal event into EV. EV will react to this call as if the
175 signal specified by $signal had occured.
176
126 WATCHER OBJECTS 177WATCHER OBJECTS
127 A watcher is an object that gets created to record your interest in some 178 A watcher is an object that gets created to record your interest in some
128 event. For instance, if you want to wait for STDIN to become readable, 179 event. For instance, if you want to wait for STDIN to become readable,
129 you would create an EV::io watcher for that: 180 you would create an EV::io watcher for that:
130 181
131 my $watcher = EV::io *STDIN, EV::READ, sub { 182 my $watcher = EV::io *STDIN, EV::READ, sub {
132 my ($watcher, $revents) = @_; 183 my ($watcher, $revents) = @_;
133 warn "yeah, STDIN should not be readable without blocking!\n" 184 warn "yeah, STDIN should now be readable without blocking!\n"
134 }; 185 };
135 186
136 All watchers can be active (waiting for events) or inactive (paused). 187 All watchers can be active (waiting for events) or inactive (paused).
137 Only active watchers will have their callbacks invoked. All callbacks 188 Only active watchers will have their callbacks invoked. All callbacks
138 will be called with at least two arguments: the watcher and a bitmask of 189 will be called with at least two arguments: the watcher and a bitmask of
139 received events. 190 received events.
140 191
141 Each watcher type has its associated bit in revents, so you can use the 192 Each watcher type has its associated bit in revents, so you can use the
142 same callback for multiple watchers. The event mask is named after the 193 same callback for multiple watchers. The event mask is named after the
143 type, i..e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE, 194 type, i..e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE,
144 EV::periodic sets EV::PERIODIC and so on, with the exception of IO 195 EV::periodic sets EV::PERIODIC and so on, with the exception of I/O
145 events (which can set both EV::READ and EV::WRITE bits), and EV::timer 196 events (which can set both EV::READ and EV::WRITE bits), and EV::timer
146 (which uses EV::TIMEOUT). 197 (which uses EV::TIMEOUT).
147 198
148 In the rare case where one wants to create a watcher but not start it at 199 In the rare case where one wants to create a watcher but not start it at
149 the same time, each constructor has a variant with a trailing "_ns" in 200 the same time, each constructor has a variant with a trailing "_ns" in
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167 stopped watchers). 218 stopped watchers).
168 219
169 $w->stop 220 $w->stop
170 Stop a watcher if it is active. Also clear any pending events 221 Stop a watcher if it is active. Also clear any pending events
171 (events that have been received but that didn't yet result in a 222 (events that have been received but that didn't yet result in a
172 callback invocation), regardless of wether the watcher was active or 223 callback invocation), regardless of whether the watcher was active
173 not. 224 or not.
174 225
175 $bool = $w->is_active 226 $bool = $w->is_active
176 Returns true if the watcher is active, false otherwise. 227 Returns true if the watcher is active, false otherwise.
177 228
178 $current_data = $w->data 229 $current_data = $w->data
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201 The default priority of any newly-created watcher is 0. 252 The default priority of any newly-created watcher is 0.
202 253
203 Note that the priority semantics have not yet been fleshed out and 254 Note that the priority semantics have not yet been fleshed out and
204 are subject to almost certain change. 255 are subject to almost certain change.
205 256
206 $w->trigger ($revents) 257 $w->invoke ($revents)
207 Call the callback *now* with the given event mask. 258 Call the callback *now* with the given event mask.
259
260 $w->feed_event ($revents)
261 Feed some events on this watcher into EV. EV will react to this call
262 as if the watcher had received the given $revents mask.
263
264 $revents = $w->clear_pending
265 If the watcher is pending, this function clears its pending status
266 and returns its $revents bitset (as if its callback was invoked). If
267 the watcher isn't pending it does nothing and returns 0.
208 268
209 $previous_state = $w->keepalive ($bool) 269 $previous_state = $w->keepalive ($bool)
210 Normally, "EV::loop" will return when there are no active watchers 270 Normally, "EV::loop" will return when there are no active watchers
211 (which is a "deadlock" because no progress can be made anymore). 271 (which is a "deadlock" because no progress can be made anymore).
212 This is convinient because it allows you to start your watchers (and 272 This is convinient because it allows you to start your watchers (and
213 your jobs), call "EV::loop" once and when it returns you know that 273 your jobs), call "EV::loop" once and when it returns you know that
214 all your jobs are finished (or they forgot to register some watchers 274 all your jobs are finished (or they forgot to register some watchers
215 for their task :). 275 for their task :).
216 276
217 Sometimes, however, this gets in your way, for example when you the 277 Sometimes, however, this gets in your way, for example when the
218 module that calls "EV::loop" (usually the main program) is not the 278 module that calls "EV::loop" (usually the main program) is not the
219 same module as a long-living watcher (for example a DNS client 279 same module as a long-living watcher (for example a DNS client
220 module written by somebody else even). Then you might want any 280 module written by somebody else even). Then you might want any
221 outstanding requests to be handled, but you would not want to keep 281 outstanding requests to be handled, but you would not want to keep
222 "EV::loop" from returning just because you happen to have this 282 "EV::loop" from returning just because you happen to have this
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227 returning. 287 returning.
228 288
229 The initial value for keepalive is true (enabled), and you cna 289 The initial value for keepalive is true (enabled), and you cna
230 change it any time. 290 change it any time.
231 291
232 Example: Register an IO watcher for some UDP socket but do not keep 292 Example: Register an I/O watcher for some UDP socket but do not keep
233 the event loop from running just because of that watcher. 293 the event loop from running just because of that watcher.
234 294
235 my $udp_socket = ... 295 my $udp_socket = ...
236 my $udp_watcher = EV::io $udp_socket, EV::READ, sub { ... }; 296 my $udp_watcher = EV::io $udp_socket, EV::READ, sub { ... };
237 $udp_watcher->keepalive (0); 297 $1000udp_watcher->keepalive (0);
238 298
299 $loop = $w->loop
300 Return the loop that this watcher is attached to.
301
239 WATCHER TYPES 302WATCHER TYPES
240 Each of the following subsections describes a single watcher type. 303 Each of the following subsections describes a single watcher type.
241 304
242 IO WATCHERS - is this file descriptor readable or writable? 305 I/O WATCHERS - is this file descriptor readable or writable?
243 $w = EV::io $fileno_or_fh, $eventmask, $callback 306 $w = EV::io $fileno_or_fh, $eventmask, $callback
244 $w = EV::io_ns $fileno_or_fh, $eventmask, $callback 307 $w = EV::io_ns $fileno_or_fh, $eventmask, $callback
308 $w = $loop->io ($fileno_or_fh, $eventmask, $callback)
309 $w = $loop->io_ns ($fileno_or_fh, $eventmask, $callback)
245 As long as the returned watcher object is alive, call the $callback 310 As long as the returned watcher object is alive, call the $callback
246 when at least one of events specified in $eventmask occurs. 311 when at least one of events specified in $eventmask occurs.
247 312
248 The $eventmask can be one or more of these constants ORed together: 313 The $eventmask can be one or more of these constants ORed together:
249 314
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266 Returns the previously set event mask and optionally set a new one. 331 Returns the previously set event mask and optionally set a new one.
267 332
268 TIMER WATCHERS - relative and optionally repeating timeouts 333 TIMER WATCHERS - relative and optionally repeating timeouts
269 $w = EV::timer $after, $repeat, $callback 334 $w = EV::timer $after, $repeat, $callback
270 $w = EV::timer_ns $after, $repeat, $callback 335 $w = EV::timer_ns $after, $repeat, $callback
336 $w = $loop->timer ($after, $repeat, $callback)
337 $w = $loop->timer_ns ($after, $repeat, $callback)
271 Calls the callback after $after seconds (which may be fractional). 338 Calls the callback after $after seconds (which may be fractional).
272 If $repeat is non-zero, the timer will be restarted (with the 339 If $repeat is non-zero, the timer will be restarted (with the
273 $repeat value as $after) after the callback returns. 340 $repeat value as $after) after the callback returns.
274 341
275 This means that the callback would be called roughly after $after 342 This means that the callback would be called roughly after $after
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311 method on the timeout. 378 method on the timeout.
312 379
313 PERIODIC WATCHERS - to cron or not to cron? 380 PERIODIC WATCHERS - to cron or not to cron?
314 $w = EV::periodic $at, $interval, $reschedule_cb, $callback 381 $w = EV::periodic $at, $interval, $reschedule_cb, $callback
315 $w = EV::periodic_ns $at, $interval, $reschedule_cb, $callback 382 $w = EV::periodic_ns $at, $interval, $reschedule_cb, $callback
383 $w = $loop->periodic ($at, $interval, $reschedule_cb, $callback)
384 $w = $loop->periodic_ns ($at, $interval, $reschedule_cb, $callback)
316 Similar to EV::timer, but is not based on relative timeouts but on 385 Similar to EV::timer, but is not based on relative timeouts but on
317 absolute times. Apart from creating "simple" timers that trigger 386 absolute times. Apart from creating "simple" timers that trigger
318 "at" the specified time, it can also be used for non-drifting 387 "at" the specified time, it can also be used for non-drifting
319 absolute timers and more complex, cron-like, setups that are not 388 absolute timers and more complex, cron-like, setups that are not
320 adversely affected by time jumps (i.e. when the system clock is 389 adversely affected by time jumps (i.e. when the system clock is
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388 be called at any time. 457 be called at any time.
389 458
390 $w->again 459 $w->again
391 Simply stops and starts the watcher again. 460 Simply stops and starts the watcher again.
392 461
462 $time = $w->at
463 Return the time that the watcher is expected to trigger next.
464
393 SIGNAL WATCHERS - signal me when a signal gets signalled! 465 SIGNAL WATCHERS - signal me when a signal gets signalled!
394 $w = EV::signal $signal, $callback 466 $w = EV::signal $signal, $callback
395 $w = EV::signal_ns $signal, $callback 467 $w = EV::signal_ns $signal, $callback
396 Call the callback when $signal is received (the signal can be 468 Call the callback when $signal is received (the signal can be
397 specified by number or by name, just as with "kill" or %SIG). 469 specified by number or by name, just as with "kill" or %SIG).
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416 optionally set a new one. 488 optionally set a new one.
417 489
418 CHILD WATCHERS - watch out for process status changes 490 CHILD WATCHERS - watch out for process status changes
419 $w = EV::child $pid, $callback 491 $w = EV::child $pid, $callback
420 $w = EV::child_ns $pid, $callback 492 $w = EV::child_ns $pid, $callback
493 $w = $loop->child ($pid, $callback)
494 $w = $loop->child_ns ($pid, $callback)
421 Call the callback when a status change for pid $pid (or any pid if 495 Call the callback when a status change for pid $pid (or any pid if
422 $pid is 0) has been received. More precisely: when the process 496 $pid is 0) has been received. More precisely: when the process
423 receives a "SIGCHLD", EV will fetch the outstanding exit/wait status 497 receives a "SIGCHLD", EV will fetch the outstanding exit/wait status
424 for all changed/zombie children and call the callback. 498 for all changed/zombie children and call the callback.
425 499
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455 a watcher for all pids). 529 a watcher for all pids).
456 530
457 STAT WATCHERS - did the file attributes just change? 531 STAT WATCHERS - did the file attributes just change?
458 $w = EV::stat $path, $interval, $callback 532 $w = EV::stat $path, $interval, $callback
459 $w = EV::stat_ns $path, $interval, $callback 533 $w = EV::stat_ns $path, $interval, $callback
534 $w = $loop->stat ($path, $interval, $callback)
535 $w = $loop->stat_ns ($path, $interval, $callback)
460 Call the callback when a file status change has been detected on 536 Call the callback when a file status change has been detected on
461 $path. The $path does not need to exist, changing from "path exists" 537 $path. The $path does not need to exist, changing from "path exists"
462 to "path does not exist" is a status change like any other. 538 to "path does not exist" is a status change like any other.
463 539
464 The $interval is a recommended polling interval for systems where 540 The $interval is a recommended polling interval for systems where
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524 Can be used to query the actual interval used. 600 Can be used to query the actual interval used.
525 601
526 IDLE WATCHERS - when you've got nothing better to do... 602 IDLE WATCHERS - when you've got nothing better to do...
527 $w = EV::idle $callback 603 $w = EV::idle $callback
528 $w = EV::idle_ns $callback 604 $w = EV::idle_ns $callback
605 $w = $loop->idle ($callback)
606 $w = $loop->idle_ns ($callback)
529 Call the callback when there are no pending io, timer/periodic, 607 Call the callback when there are no other pending watchers of the
530 signal or child events, i.e. when the process is idle. 608 same or higher priority (excluding check, prepare and other idle
609 watchers of the same or lower priority, of course). They are called
610 idle watchers because when the watcher is the highest priority
611 pending event in the process, the process is considered to be idle
612 at that priority.
613
614 If you want a watcher that is only ever called when *no* other
615 events are outstanding you have to set the priority to "EV::MINPRI".
531 616
532 The process will not block as long as any idle watchers are active, 617 The process will not block as long as any idle watchers are active,
533 and they will be called repeatedly until stopped. 618 and they will be called repeatedly until stopped.
619
620 For example, if you have idle watchers at priority 0 and 1, and an
621 I/O watcher at priority 0, then the idle watcher at priority 1 and
622 the I/O watcher will always run when ready. Only when the idle
623 watcher at priority 1 is stopped and the I/O watcher at priority 0
624 is not pending with the 0-priority idle watcher be invoked.
534 625
535 The "idle_ns" variant doesn't start (activate) the newly created 626 The "idle_ns" variant doesn't start (activate) the newly created
536 watcher. 627 watcher.
537 628
538 PREPARE WATCHERS - customise your event loop! 629 PREPARE WATCHERS - customise your event loop!
539 $w = EV::prepare $callback 630 $w = EV::prepare $callback
540 $w = EV::prepare_ns $callback 631 $w = EV::prepare_ns $callback
632 $w = $loop->prepare ($callback)
633 $w = $loop->prepare_ns ($callback)
541 Call the callback just before the process would block. You can still 634 Call the callback just before the process would block. You can still
542 create/modify any watchers at this point. 635 create/modify any watchers at this point.
543 636
544 See the EV::check watcher, below, for explanations and an example. 637 See the EV::check watcher, below, for explanations and an example.
545 638
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547 watcher. 640 watcher.
548 641
549 CHECK WATCHERS - customise your event loop even more! 642 CHECK WATCHERS - customise your event loop even more!
550 $w = EV::check $callback 643 $w = EV::check $callback
551 $w = EV::check_ns $callback 644 $w = EV::check_ns $callback
645 $w = $loop->check ($callback)
646 $w = $loop->check_ns ($callback)
552 Call the callback just after the process wakes up again (after it 647 Call the callback just after the process wakes up again (after it
553 has gathered events), but before any other callbacks have been 648 has gathered events), but before any other callbacks have been
554 invoked. 649 invoked.
555 650
556 This is used to integrate other event-based software into the EV 651 This is used to integrate other event-based software into the EV
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567 or return; 662 or return;
568 663
569 # make the dispatcher handle any outstanding stuff 664 # make the dispatcher handle any outstanding stuff
570 ... not shown 665 ... not shown
571 666
572 # create an IO watcher for each and every socket 667 # create an I/O watcher for each and every socket
573 @snmp_watcher = ( 668 @snmp_watcher = (
574 (map { EV::io $_, EV::READ, sub { } } 669 (map { EV::io $_, EV::READ, sub { } }
575 keys %{ $dispatcher->{_descriptors} }), 670 keys %{ $dispatcher->{_descriptors} }),
576 671
577 EV::timer +($event->[Net::SNMP::Dispatcher::_ACTIVE] 672 EV::timer +($event->[Net::SNMP::Dispatcher::_ACTIVE]
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605 is done before the event loop blocks next and before "check" watchers 700 is done before the event loop blocks next and before "check" watchers
606 are being called, and only in the child after the fork. 701 are being called, and only in the child after the fork.
607 702
608 $w = EV::fork $callback 703 $w = EV::fork $callback
609 $w = EV::fork_ns $callback 704 $w = EV::fork_ns $callback
705 $w = $loop->fork ($callback)
706 $w = $loop->fork_ns ($callback)
610 Call the callback before the event loop is resumed in the child 707 Call the callback before the event loop is resumed in the child
611 process after a fork. 708 process after a fork.
612 709
613 The "fork_ns" variant doesn't start (activate) the newly created 710 The "fork_ns" variant doesn't start (activate) the newly created
614 watcher. 711 watcher.
712
713PERL SIGNALS
714 While Perl signal handling (%SIG) is not affected by EV, the behaviour
715 with EV is as the same as any other C library: Perl-signals will only be
716 handled when Perl runs, which means your signal handler might be invoked
717 only the next time an event callback is invoked.
718
719 The solution is to use EV signal watchers (see "EV::signal"), which will
720 ensure proper operations with regards to other event watchers.
721
722 If you cannot do this for whatever reason, you can also force a watcher
723 to be called on every event loop iteration by installing a "EV::check"
724 watcher:
725
726 my $async_check = EV::check sub { };
727
728 This ensures that perl gets into control for a short time to handle any
729 pending signals, and also ensures (slightly) slower overall operation.
615 730
616THREADS 731THREADS
617 Threads are not supported by this module in any way. Perl pseudo-threads 732 Threads are not supported by this module in any way. Perl pseudo-threads
618 is evil stuff and must die. As soon as Perl gains real threads I will 733 is evil stuff and must die. As soon as Perl gains real threads I will
619 work on thread support for it. 734 work on thread support for it.
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634 749
635 On win32, there is no notion of fork so all this doesn't apply, of 750 On win32, there is no notion of fork so all this doesn't apply, of
636 course. 751 course.
637 752
638SEE ALSO 753SEE ALSO
639 EV::ADNS (asynchronous dns), Glib::EV (makes Glib/Gtk2 use EV as event 754 EV::ADNS (asynchronous DNS), Glib::EV (makes Glib/Gtk2 use EV as event
640 loop), Coro::EV (efficient coroutines with EV). 755 loop), EV::Glib (embed Glib into EV), Coro::EV (efficient coroutines
756 with EV), Net::SNMP::EV (asynchronous SNMP).
641 757
642AUTHOR 758AUTHOR
643 Marc Lehmann <schmorp@schmorp.de> 759 Marc Lehmann <schmorp@schmorp.de>
644 http://home.schmorp.de/ 760 http://home.schmorp.de/
645 761

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