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1NAME 1NAME
2 EV - perl interface to libev, a high performance full-featured event 2 EV - perl interface to libev, a high performance full-featured event
3 loop 3 loop
4 4
5SYNOPSIS 5SYNOPSIS
6 use EV; 6 use EV;
7 7
8 # TIMERS 8 # TIMERS
9 9
10 my $w = EV::timer 2, 0, sub { 10 my $w = EV::timer 2, 0, sub {
11 warn "is called after 2s"; 11 warn "is called after 2s";
12 }; 12 };
13 13
14 my $w = EV::timer 2, 2, sub { 14 my $w = EV::timer 2, 2, sub {
15 warn "is called roughly every 2s (repeat = 2)"; 15 warn "is called roughly every 2s (repeat = 2)";
16 }; 16 };
17 17
18 undef $w; # destroy event watcher again 18 undef $w; # destroy event watcher again
19 19
20 my $w = EV::periodic 0, 60, 0, sub { 20 my $w = EV::periodic 0, 60, 0, sub {
21 warn "is called every minute, on the minute, exactly"; 21 warn "is called every minute, on the minute, exactly";
22 }; 22 };
23 23
24 # IO 24 # IO
25 25
26 my $w = EV::io *STDIN, EV::READ, sub { 26 my $w = EV::io *STDIN, EV::READ, sub {
27 my ($w, $revents) = @_; # all callbacks receive the watcher and event mask 27 my ($w, $revents) = @_; # all callbacks receive the watcher and event mask
28 warn "stdin is readable, you entered: ", <STDIN>; 28 warn "stdin is readable, you entered: ", <STDIN>;
29 }; 29 };
30 30
31 # SIGNALS 31 # SIGNALS
32 32
33 my $w = EV::signal 'QUIT', sub { 33 my $w = EV::signal 'QUIT', sub {
34 warn "sigquit received\n"; 34 warn "sigquit received\n";
35 }; 35 };
36 36
37 # CHILD/PID STATUS CHANGES 37 # CHILD/PID STATUS CHANGES
38 38
39 my $w = EV::child 666, 0, sub { 39 my $w = EV::child 666, 0, sub {
40 my ($w, $revents) = @_; 40 my ($w, $revents) = @_;
41 my $status = $w->rstatus; 41 my $status = $w->rstatus;
42 }; 42 };
43 43
44 # STAT CHANGES 44 # STAT CHANGES
45 my $w = EV::stat "/etc/passwd", 10, sub { 45 my $w = EV::stat "/etc/passwd", 10, sub {
46 my ($w, $revents) = @_; 46 my ($w, $revents) = @_;
47 warn $w->path, " has changed somehow.\n"; 47 warn $w->path, " has changed somehow.\n";
48 }; 48 };
49 49
50 # MAINLOOP 50 # MAINLOOP
51 EV::loop; # loop until EV::unloop is called or all watchers stop 51 EV::loop; # loop until EV::unloop is called or all watchers stop
52 EV::loop EV::LOOP_ONESHOT; # block until at least one event could be handled 52 EV::loop EV::LOOP_ONESHOT; # block until at least one event could be handled
53 EV::loop EV::LOOP_NONBLOCK; # try to handle same events, but do not block 53 EV::loop EV::LOOP_NONBLOCK; # try to handle same events, but do not block
54
55BEFORE YOU START USING THIS MODULE
56 If you only need timer, I/O, signal, child and idle watchers and not the
57 advanced functionality of this module, consider using AnyEvent instead,
58 specifically the simplified API described in AE.
59
60 When used with EV as backend, the AE API is as fast as the native EV
61 API, but your programs/modules will still run with many other event
62 loops.
54 63
55DESCRIPTION 64DESCRIPTION
56 This module provides an interface to libev 65 This module provides an interface to libev
57 (<http://software.schmorp.de/pkg/libev.html>). While the documentation 66 (<http://software.schmorp.de/pkg/libev.html>). While the documentation
58 below is comprehensive, one might also consult the documentation of 67 below is comprehensive, one might also consult the documentation of
59 libev itself (<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod>) 68 libev itself (<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod> or
60 for more subtle details on watcher semantics or some discussion on the 69 perldoc EV::libev) for more subtle details on watcher semantics or some
61 available backends, or how to force a specific backend with 70 discussion on the available backends, or how to force a specific backend
62 "LIBEV_FLAGS", or just about in any case because it has much more 71 with "LIBEV_FLAGS", or just about in any case because it has much more
63 detailed information. 72 detailed information.
64 73
65 This module is very fast and scalable. It is actually so fast that you 74 This module is very fast and scalable. It is actually so fast that you
66 can use it through the AnyEvent module, stay portable to other event 75 can use it through the AnyEvent module, stay portable to other event
67 loops (if you don't rely on any watcher types not available through it) 76 loops (if you don't rely on any watcher types not available through it)
68 and still be faster than with any other event loop currently supported 77 and still be faster than with any other event loop currently supported
69 in Perl. 78 in Perl.
79
80 MODULE EXPORTS
81 This module does not export any symbols.
70 82
71EVENT LOOPS 83EVENT LOOPS
72 EV supports multiple event loops: There is a single "default event loop" 84 EV supports multiple event loops: There is a single "default event loop"
73 that can handle everything including signals and child watchers, and any 85 that can handle everything including signals and child watchers, and any
74 number of "dynamic event loops" that can use different backends (with 86 number of "dynamic event loops" that can use different backends (with
… …
81 default loop as this is fastest (perl-wise), best supported by other 93 default loop as this is fastest (perl-wise), best supported by other
82 modules (e.g. AnyEvent or Coro) and most portable event loop. 94 modules (e.g. AnyEvent or Coro) and most portable event loop.
83 95
84 For specific programs you can create additional event loops dynamically. 96 For specific programs you can create additional event loops dynamically.
85 97
98 If you want to take advantage of kqueue (which often works properly for
99 sockets only) even though the default loop doesn't enable it, you can
100 *embed* a kqueue loop into the default loop: running the default loop
101 will then also service the kqueue loop to some extent. See the example
102 in the section about embed watchers for an example on how to achieve
103 that.
104
86 $loop = new EV::loop [$flags] 105 $loop = new EV::Loop [$flags]
87 Create a new event loop as per the specified flags. Please refer to 106 Create a new event loop as per the specified flags. Please refer to
88 the "ev_loop_new ()" function description in the libev documentation 107 the "ev_loop_new ()" function description in the libev documentation
89 (<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#GLOBAL_FUNCTI 108 (<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#GLOBAL_FUNCTI
90 ONS>) for more info. 109 ONS>, or locally-installed as EV::libev manpage) for more info.
91 110
92 The loop will automatically be destroyed when it is no longer 111 The loop will automatically be destroyed when it is no longer
93 referenced by any watcher and the loop object goes out of scope. 112 referenced by any watcher and the loop object goes out of scope.
94 113
95 Using "EV::FLAG_FORKCHECK" is recommended, as only the default event 114 If you are not embedding the loop, then Using "EV::FLAG_FORKCHECK"
96 loop is protected by this module. 115 is recommended, as only the default event loop is protected by this
116 module. If you *are* embedding this loop in the default loop, this
117 is not necessary, as "EV::embed" automatically does the right thing
118 on fork.
97 119
98 $loop->loop_fork 120 $loop->loop_fork
99 Must be called after a fork in the child, before entering or 121 Must be called after a fork in the child, before entering or
100 continuing the event loop. An alternative is to use 122 continuing the event loop. An alternative is to use
101 "EV::FLAG_FORKCHECK" which calls this function automatically, at 123 "EV::FLAG_FORKCHECK" which calls this function automatically, at
102 some performance loss (refer to the libev documentation). 124 some performance loss (refer to the libev documentation).
103 125
104 $loop->loop_verify 126 $loop->loop_verify
105 Calls "ev_verify" to make internal consistency checks (for debugging 127 Calls "ev_verify" to make internal consistency checks (for debugging
106 libev) and abort the program if any data structures wree found to be 128 libev) and abort the program if any data structures were found to be
107 corrupted. 129 corrupted.
108 130
109 $loop = EV::default_loop [$flags] 131 $loop = EV::default_loop [$flags]
110 Return the default loop (which is a singleton object). Since this 132 Return the default loop (which is a singleton object). Since this
111 module already creates the default loop with default flags, 133 module already creates the default loop with default flags,
112 specifying flags here will not have any effect unless you destroy 134 specifying flags here will not have any effect unless you destroy
113 the default loop. 135 the default loop first, which isn't supported. So in short: don't do
136 it, and if you break it, you get to keep the pieces.
114 137
115BASIC INTERFACE 138BASIC INTERFACE
116 $EV::DIED 139 $EV::DIED
117 Must contain a reference to a function that is called when a 140 Must contain a reference to a function that is called when a
118 callback throws an exception (with $@ containing the error). The 141 callback throws an exception (with $@ containing the error). The
… …
135 Returns the current time in (fractional) seconds since the epoch. 158 Returns the current time in (fractional) seconds since the epoch.
136 159
137 $time = EV::now 160 $time = EV::now
138 $time = $loop->now 161 $time = $loop->now
139 Returns the time the last event loop iteration has been started. 162 Returns the time the last event loop iteration has been started.
140 This is the time that (relative) timers are based on, and refering 163 This is the time that (relative) timers are based on, and referring
141 to it is usually faster then calling EV::time. 164 to it is usually faster then calling EV::time.
165
166 EV::now_update
167 $loop->now_update
168 Establishes the current time by querying the kernel, updating the
169 time returned by "EV::now" in the progress. This is a costly
170 operation and is usually done automatically within "EV::loop".
171
172 This function is rarely useful, but when some event callback runs
173 for a very long time without entering the event loop, updating
174 libev's idea of the current time is a good idea.
175
176 EV::suspend
177 $loop->suspend
178 EV::resume
179 $loop->resume
180 These two functions suspend and resume a loop, for use when the loop
181 is not used for a while and timeouts should not be processed.
182
183 A typical use case would be an interactive program such as a game:
184 When the user presses "^Z" to suspend the game and resumes it an
185 hour later it would be best to handle timeouts as if no time had
186 actually passed while the program was suspended. This can be
187 achieved by calling "suspend" in your "SIGTSTP" handler, sending
188 yourself a "SIGSTOP" and calling "resume" directly afterwards to
189 resume timer processing.
190
191 Effectively, all "timer" watchers will be delayed by the time spend
192 between "suspend" and "resume", and all "periodic" watchers will be
193 rescheduled (that is, they will lose any events that would have
194 occured while suspended).
195
196 After calling "suspend" you must not call *any* function on the
197 given loop other than "resume", and you must not call "resume"
198 without a previous call to "suspend".
199
200 Calling "suspend"/"resume" has the side effect of updating the event
201 loop time (see "now_update").
142 202
143 $backend = EV::backend 203 $backend = EV::backend
144 $backend = $loop->backend 204 $backend = $loop->backend
145 Returns an integer describing the backend used by libev 205 Returns an integer describing the backend used by libev
146 (EV::METHOD_SELECT or EV::METHOD_EPOLL). 206 (EV::BACKEND_SELECT or EV::BACKEND_EPOLL).
147 207
148 EV::loop [$flags] 208 EV::loop [$flags]
149 $loop->loop ([$flags]) 209 $loop->loop ([$flags])
150 Begin checking for events and calling callbacks. It returns when a 210 Begin checking for events and calling callbacks. It returns when a
151 callback calls EV::unloop. 211 callback calls EV::unloop.
… …
165 EV::loop will return as fast as possible. 225 EV::loop will return as fast as possible.
166 226
167 $count = EV::loop_count 227 $count = EV::loop_count
168 $count = $loop->loop_count 228 $count = $loop->loop_count
169 Return the number of times the event loop has polled for new events. 229 Return the number of times the event loop has polled for new events.
170 Sometiems useful as a generation counter. 230 Sometimes useful as a generation counter.
171 231
172 EV::once $fh_or_undef, $events, $timeout, $cb->($revents) 232 EV::once $fh_or_undef, $events, $timeout, $cb->($revents)
173 $loop->once ($fh_or_undef, $events, $timeout, $cb->($revents)) 233 $loop->once ($fh_or_undef, $events, $timeout, $cb->($revents))
174 This function rolls together an I/O and a timer watcher for a single 234 This function rolls together an I/O and a timer watcher for a single
175 one-shot event without the need for managing a watcher object. 235 one-shot event without the need for managing a watcher object.
… …
184 Otherwise a EV::timer with this value will be started. 244 Otherwise a EV::timer with this value will be started.
185 245
186 When an error occurs or either the timeout or I/O watcher triggers, 246 When an error occurs or either the timeout or I/O watcher triggers,
187 then the callback will be called with the received event set (in 247 then the callback will be called with the received event set (in
188 general you can expect it to be a combination of "EV::ERROR", 248 general you can expect it to be a combination of "EV::ERROR",
189 "EV::READ", "EV::WRITE" and "EV::TIMEOUT"). 249 "EV::READ", "EV::WRITE" and "EV::TIMER").
190 250
191 EV::once doesn't return anything: the watchers stay active till 251 EV::once doesn't return anything: the watchers stay active till
192 either of them triggers, then they will be stopped and freed, and 252 either of them triggers, then they will be stopped and freed, and
193 the callback invoked. 253 the callback invoked.
194 254
… …
209 $loop->set_timeout_collect_interval ($time) 269 $loop->set_timeout_collect_interval ($time)
210 These advanced functions set the minimum block interval when polling 270 These advanced functions set the minimum block interval when polling
211 for I/O events and the minimum wait interval for timer events. See 271 for I/O events and the minimum wait interval for timer events. See
212 the libev documentation at 272 the libev documentation at
213 <http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#FUNCTIONS_CONT 273 <http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#FUNCTIONS_CONT
214 ROLLING_THE_EVENT_LOOP> for a more detailed discussion. 274 ROLLING_THE_EVENT_LOOP> (locally installed as EV::libev) for a more
275 detailed discussion.
276
277 $count = EV::pending_count
278 $count = $loop->pending_count
279 Returns the number of currently pending watchers.
280
281 EV::invoke_pending
282 $loop->invoke_pending
283 Invoke all currently pending watchers.
215 284
216WATCHER OBJECTS 285WATCHER OBJECTS
217 A watcher is an object that gets created to record your interest in some 286 A watcher is an object that gets created to record your interest in some
218 event. For instance, if you want to wait for STDIN to become readable, 287 event. For instance, if you want to wait for STDIN to become readable,
219 you would create an EV::io watcher for that: 288 you would create an EV::io watcher for that:
220 289
221 my $watcher = EV::io *STDIN, EV::READ, sub { 290 my $watcher = EV::io *STDIN, EV::READ, sub {
222 my ($watcher, $revents) = @_; 291 my ($watcher, $revents) = @_;
223 warn "yeah, STDIN should now be readable without blocking!\n" 292 warn "yeah, STDIN should now be readable without blocking!\n"
224 }; 293 };
225 294
226 All watchers can be active (waiting for events) or inactive (paused). 295 All watchers can be active (waiting for events) or inactive (paused).
227 Only active watchers will have their callbacks invoked. All callbacks 296 Only active watchers will have their callbacks invoked. All callbacks
228 will be called with at least two arguments: the watcher and a bitmask of 297 will be called with at least two arguments: the watcher and a bitmask of
229 received events. 298 received events.
230 299
231 Each watcher type has its associated bit in revents, so you can use the 300 Each watcher type has its associated bit in revents, so you can use the
232 same callback for multiple watchers. The event mask is named after the 301 same callback for multiple watchers. The event mask is named after the
233 type, i..e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE, 302 type, i.e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE,
234 EV::periodic sets EV::PERIODIC and so on, with the exception of I/O 303 EV::periodic sets EV::PERIODIC and so on, with the exception of I/O
235 events (which can set both EV::READ and EV::WRITE bits), and EV::timer 304 events (which can set both EV::READ and EV::WRITE bits).
236 (which uses EV::TIMEOUT).
237 305
238 In the rare case where one wants to create a watcher but not start it at 306 In the rare case where one wants to create a watcher but not start it at
239 the same time, each constructor has a variant with a trailing "_ns" in 307 the same time, each constructor has a variant with a trailing "_ns" in
240 its name, e.g. EV::io has a non-starting variant EV::io_ns and so on. 308 its name, e.g. EV::io has a non-starting variant EV::io_ns and so on.
241 309
… …
306 the watcher isn't pending it does nothing and returns 0. 374 the watcher isn't pending it does nothing and returns 0.
307 375
308 $previous_state = $w->keepalive ($bool) 376 $previous_state = $w->keepalive ($bool)
309 Normally, "EV::loop" will return when there are no active watchers 377 Normally, "EV::loop" will return when there are no active watchers
310 (which is a "deadlock" because no progress can be made anymore). 378 (which is a "deadlock" because no progress can be made anymore).
311 This is convinient because it allows you to start your watchers (and 379 This is convenient because it allows you to start your watchers (and
312 your jobs), call "EV::loop" once and when it returns you know that 380 your jobs), call "EV::loop" once and when it returns you know that
313 all your jobs are finished (or they forgot to register some watchers 381 all your jobs are finished (or they forgot to register some watchers
314 for their task :). 382 for their task :).
315 383
316 Sometimes, however, this gets in your way, for example when the 384 Sometimes, however, this gets in your way, for example when the
… …
323 391
324 In this case you can clear the keepalive status, which means that 392 In this case you can clear the keepalive status, which means that
325 even though your watcher is active, it won't keep "EV::loop" from 393 even though your watcher is active, it won't keep "EV::loop" from
326 returning. 394 returning.
327 395
328 The initial value for keepalive is true (enabled), and you cna 396 The initial value for keepalive is true (enabled), and you can
329 change it any time. 397 change it any time.
330 398
331 Example: Register an I/O watcher for some UDP socket but do not keep 399 Example: Register an I/O watcher for some UDP socket but do not keep
332 the event loop from running just because of that watcher. 400 the event loop from running just because of that watcher.
333 401
334 my $udp_socket = ... 402 my $udp_socket = ...
335 my $udp_watcher = EV::io $udp_socket, EV::READ, sub { ... }; 403 my $udp_watcher = EV::io $udp_socket, EV::READ, sub { ... };
336 $1000udp_watcher->keepalive (0); 404 $udp_watcher->keepalive (0);
337 405
338 $loop = $w->loop 406 $loop = $w->loop
339 Return the loop that this watcher is attached to. 407 Return the loop that this watcher is attached to.
340 408
341WATCHER TYPES 409WATCHER TYPES
… …
507 Return the time that the watcher is expected to trigger next. 575 Return the time that the watcher is expected to trigger next.
508 576
509 SIGNAL WATCHERS - signal me when a signal gets signalled! 577 SIGNAL WATCHERS - signal me when a signal gets signalled!
510 $w = EV::signal $signal, $callback 578 $w = EV::signal $signal, $callback
511 $w = EV::signal_ns $signal, $callback 579 $w = EV::signal_ns $signal, $callback
580 $w = $loop->signal ($signal, $callback)
581 $w = $loop->signal_ns ($signal, $callback)
512 Call the callback when $signal is received (the signal can be 582 Call the callback when $signal is received (the signal can be
513 specified by number or by name, just as with "kill" or %SIG). 583 specified by number or by name, just as with "kill" or %SIG).
584
585 Only one event loop can grab a given signal - attempting to grab the
586 same signal from two EV loops will crash the program immediately or
587 cause data corruption.
514 588
515 EV will grab the signal for the process (the kernel only allows one 589 EV will grab the signal for the process (the kernel only allows one
516 component to receive a signal at a time) when you start a signal 590 component to receive a signal at a time) when you start a signal
517 watcher, and removes it again when you stop it. Perl does the same 591 watcher, and removes it again when you stop it. Perl does the same
518 when you add/remove callbacks to %SIG, so watch out. 592 when you add/remove callbacks to %SIG, so watch out.
… …
733 # make the dispatcher handle any new stuff 807 # make the dispatcher handle any new stuff
734 ... not shown 808 ... not shown
735 }; 809 };
736 810
737 The callbacks of the created watchers will not be called as the 811 The callbacks of the created watchers will not be called as the
738 watchers are destroyed before this cna happen (remember EV::check 812 watchers are destroyed before this can happen (remember EV::check
739 gets called first). 813 gets called first).
740 814
741 The "check_ns" variant doesn't start (activate) the newly created 815 The "check_ns" variant doesn't start (activate) the newly created
742 watcher. 816 watcher.
743 817
… …
762 embedded loop, other types of watchers might be handled in a delayed or 836 embedded loop, other types of watchers might be handled in a delayed or
763 incorrect fashion and must not be used). 837 incorrect fashion and must not be used).
764 838
765 See the libev documentation at 839 See the libev documentation at
766 <http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#code_ev_embed_code 840 <http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#code_ev_embed_code
767 _when_one_backend_> for more details. 841 _when_one_backend_> (locally installed as EV::libev) for more details.
768 842
769 In short, this watcher is most useful on BSD systems without working 843 In short, this watcher is most useful on BSD systems without working
770 kqueue to still be able to handle a large number of sockets: 844 kqueue to still be able to handle a large number of sockets:
771 845
772 my $socket_loop; 846 my $socket_loop;
773 847
774 # check wether we use SELECT or POLL _and_ KQUEUE is supported 848 # check wether we use SELECT or POLL _and_ KQUEUE is supported
775 if ( 849 if (
776 (EV::backend & (EV::BACKEND_POLL | EV::BACKEND_SELECT)) 850 (EV::backend & (EV::BACKEND_POLL | EV::BACKEND_SELECT))
777 && (EV::supported_backends & EV::embeddable_backends & EV::BACKEND_KQUEUE) 851 && (EV::supported_backends & EV::embeddable_backends & EV::BACKEND_KQUEUE)
778 ) { 852 ) {
779 # use kqueue for sockets 853 # use kqueue for sockets
780 $socket_loop = new EV::Loop EV::BACKEND_KQUEUE | EV::FLAG_NOENV; 854 $socket_loop = new EV::Loop EV::BACKEND_KQUEUE | EV::FLAG_NOENV;
781 } 855 }
782 856
783 # use the default loop otherwise 857 # use the default loop otherwise
784 $socket_loop ||= EV::default_loop; 858 $socket_loop ||= EV::default_loop;
785 859
786 $w = EV::embed $otherloop, $callback 860 $w = EV::embed $otherloop[, $callback]
787 $w = EV::embed_ns $otherloop, $callback 861 $w = EV::embed_ns $otherloop[, $callback]
788 $w = $loop->embed ($otherloop, $callback) 862 $w = $loop->embed ($otherloop[, $callback])
789 $w = $loop->embed_ns ($otherloop, $callback) 863 $w = $loop->embed_ns ($otherloop[, $callback])
790 Call the callback when the embedded event loop ($otherloop) has any 864 Call the callback when the embedded event loop ($otherloop) has any
791 I/O activity. The $callback should alwas be specified as "undef" in 865 I/O activity. The $callback is optional: if it is missing, then the
792 this version of EV, which means the embedded event loop will be 866 embedded event loop will be managed automatically (which is
793 managed automatically. 867 recommended), otherwise you have to invoke "sweep" yourself.
794 868
795 The "embed_ns" variant doesn't start (activate) the newly created 869 The "embed_ns" variant doesn't start (activate) the newly created
796 watcher. 870 watcher.
797 871
798 ASYNC WATCHERS - how to wake up another event loop 872 ASYNC WATCHERS - how to wake up another event loop
799 Async watchers are provided by EV, but have little use in perl directly, 873 Async watchers are provided by EV, but have little use in perl directly,
800 as perl neither supports threads nor direct access to signal handlers or 874 as perl neither supports threads running in parallel nor direct access
801 other contexts where they could be of value. 875 to signal handlers or other contexts where they could be of value.
802 876
803 It is, however, possible to use them from the XS level. 877 It is, however, possible to use them from the XS level.
804 878
805 Please see the libev documentation for further details. 879 Please see the libev documentation for further details.
806 880
… …
825 my $async_check = EV::check sub { }; 899 my $async_check = EV::check sub { };
826 900
827 This ensures that perl gets into control for a short time to handle any 901 This ensures that perl gets into control for a short time to handle any
828 pending signals, and also ensures (slightly) slower overall operation. 902 pending signals, and also ensures (slightly) slower overall operation.
829 903
830THREADS 904ITHREADS
831 Threads are not supported by this module in any way. Perl pseudo-threads 905 Ithreads are not supported by this module in any way. Perl
832 is evil stuff and must die. As soon as Perl gains real threads I will 906 pseudo-threads is evil stuff and must die. Real threads as provided by
833 work on thread support for it. 907 Coro are fully supported (and enhanced support is available via
908 Coro::EV).
834 909
835FORK 910FORK
836 Most of the "improved" event delivering mechanisms of modern operating 911 Most of the "improved" event delivering mechanisms of modern operating
837 systems have quite a few problems with fork(2) (to put it bluntly: it is 912 systems have quite a few problems with fork(2) (to put it bluntly: it is
838 not supported and usually destructive). Libev makes it possible to work 913 not supported and usually destructive). Libev makes it possible to work
… …
854 loop), EV::Glib (embed Glib into EV), Coro::EV (efficient coroutines 929 loop), EV::Glib (embed Glib into EV), Coro::EV (efficient coroutines
855 with EV), Net::SNMP::EV (asynchronous SNMP), AnyEvent for event-loop 930 with EV), Net::SNMP::EV (asynchronous SNMP), AnyEvent for event-loop
856 agnostic and portable event driven programming. 931 agnostic and portable event driven programming.
857 932
858AUTHOR 933AUTHOR
859 Marc Lehmann <schmorp@schmorp.de> 934 Marc Lehmann <schmorp@schmorp.de>
860 http://home.schmorp.de/ 935 http://home.schmorp.de/
861 936

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