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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 libev |
61 | itself (L<http://cvs.schmorp.de/libev/ev.html>) for more subtle details on |
61 | itself (L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod>) for more |
62 | watcher semantics or some discussion on the available backends, or how to |
62 | subtle details on watcher semantics or some discussion on the available |
63 | force a specific backend with C<LIBEV_FLAGS>, or just about in any case |
63 | backends, or how to force a specific backend with C<LIBEV_FLAGS>, or just |
64 | because it has much more detailed information. |
64 | about in any case because it has much more detailed information. |
65 | |
65 | |
66 | This module is very fast and scalable. It is actually so fast that you |
66 | 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 |
67 | 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) |
68 | 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 |
69 | and still be faster than with any other event loop currently supported in |
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74 | package EV; |
74 | package EV; |
75 | |
75 | |
76 | use strict; |
76 | use strict; |
77 | |
77 | |
78 | BEGIN { |
78 | BEGIN { |
79 | our $VERSION = '3.31'; |
79 | our $VERSION = '3.41'; |
80 | use XSLoader; |
80 | use XSLoader; |
81 | XSLoader::load "EV", $VERSION; |
81 | XSLoader::load "EV", $VERSION; |
82 | } |
82 | } |
83 | |
83 | |
84 | @EV::IO::ISA = |
84 | @EV::IO::ISA = |
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568 | time the periodic watcher gets scheduled, the reschedule callback |
568 | time the periodic watcher gets scheduled, the reschedule callback |
569 | ($reschedule_cb) will be called with the watcher as first, and the current |
569 | ($reschedule_cb) will be called with the watcher as first, and the current |
570 | time as second argument. |
570 | time as second argument. |
571 | |
571 | |
572 | I<This callback MUST NOT stop or destroy this or any other periodic |
572 | 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 |
573 | watcher, ever, and MUST NOT call any event loop functions or methods>. If |
574 | afterwards. |
574 | you need to stop it, return 1e30 and stop it afterwards. You may create |
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575 | and start a C<EV::prepare> watcher for this task. |
575 | |
576 | |
576 | It must return the next time to trigger, based on the passed time value |
577 | 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 |
578 | (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 |
579 | argument). It will usually be called just before the callback will be |
579 | might be called at other times, too. |
580 | triggered, but might be called at other times, too. |
580 | |
581 | |
581 | This can be used to create very complex timers, such as a timer that |
582 | 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 |
583 | 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 |
584 | 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 |
585 | in about the same space (without requiring elaborate modules), drop me a |