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| 313 | |
313 | |
| 314 | In either case, if you care (and in most cases, you don't), then you |
314 | In either case, if you care (and in most cases, you don't), then you |
| 315 | can get whatever behaviour you want with any event loop, by taking |
315 | can get whatever behaviour you want with any event loop, by taking |
| 316 | the difference between "AnyEvent->time" and "AnyEvent->now" into |
316 | the difference between "AnyEvent->time" and "AnyEvent->now" into |
| 317 | account. |
317 | account. |
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318 | |
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319 | AnyEvent->now_update |
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320 | Some event loops (such as EV or AnyEvent::Impl::Perl) cache the |
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321 | current time for each loop iteration (see the discussion of |
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322 | AnyEvent->now, above). |
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323 | |
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324 | When a callback runs for a long time (or when the process sleeps), |
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325 | then this "current" time will differ substantially from the real |
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326 | time, which might affect timers and time-outs. |
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327 | |
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328 | When this is the case, you can call this method, which will update |
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329 | the event loop's idea of "current time". |
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330 | |
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331 | Note that updating the time *might* cause some events to be handled. |
| 318 | |
332 | |
| 319 | SIGNAL WATCHERS |
333 | SIGNAL WATCHERS |
| 320 | You can watch for signals using a signal watcher, "signal" is the signal |
334 | You can watch for signals using a signal watcher, "signal" is the signal |
| 321 | *name* in uppercase and without any "SIG" prefix, "cb" is the Perl |
335 | *name* in uppercase and without any "SIG" prefix, "cb" is the Perl |
| 322 | callback to be invoked whenever a signal occurs. |
336 | callback to be invoked whenever a signal occurs. |
