55 lines
20 KiB
Plaintext
55 lines
20 KiB
Plaintext
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rust
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N #rustc 1.96.0 (ac68faa20 2026-05-25)ÁÀ뉊 ]!ÜÛê(¹Þ—šên -5be7b69c3ff7b5b8Á íàÄTËŸ ÜJîÄ)'ß\¥! -3d1337db07d0b3aeÁ ¤²XctÔ'ÐÓ©z¨É½Ó -a4945860e1c53b00Á ¤°ð ¾ä-±($²ï=©Ã -7e98a21bfd32b0edÁ–�òÖÀH•‘P IÓHã#£ -055f30b747f859b6Á rustc_std_workspace_coreÁCçß^ò½èÝ$Çÿ+Cé -c4878ee60b2242c9Á ŸÃï+Ñ]ŠqB<ÏïW# -8dd1dd90e70d0b6aÁ miniz_oxideÁ€š»J(P>àö÷g\K -1eb618da2918ab7fÁ adler2ÁÆ;+Þ®5¥ÌýÝ°¦ÛLˆ -f7919172d268e069Á hashbrownÁPäV9ÒÆèÜ�"ÊÖVŽ\ -0fc2184a5da6723aÁ rustc_std_workspace_allocÁs&ØòØy¯s•bæ!‰ýŠ -97e4bf30be240674Á
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std_detectÁhŠBîÙºÌI®Ë�Å�š -9dbbf8346ba7ac8bÁ rustc_demangleÁûë9´Ç×@Œ�’ùXFº -f33013f239bf9f14Á cfg_ifÁÜLh�ž§Œaã¯>� -0a71c8f33a838301Á addr2lineÁ׎Þ!]8V$É@@T· -e618e6be60e87ba2Á gimliÁ¸
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°µ~Î1‹Ñt ðÁ€w -1f7768a68858f670Á objectÁ
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áPÃ?À¶¼QHJ¥� -914cd6a4dbe590d1Á memchrÁ›º«8Ór2Ù $¨ûib‚ -cf21ca6f2bb15dcdÁë
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pairÁ ParkerÁ unparkerÁ _markerÁ æ parkÁ park_timeoutÁ
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park_deadlineÁ unparkÁ À > × UnparkerÁ ! innerÁ #š # will_unparkÁ # same_parkerÁ '× )ƒ +÷ EMPTYÁ PARKEDÁ NOTIFIEDÁ InnerÁ 0º 0 lockÁ 0 cvarÁ 4è 4š 7 wakeÁ 7 wake_by_refÁ
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×4ˆ ÅÀ × ÆÀ CondvarÁ<› ‡> ¤,¤ µ> ü šh ü ! Thread parking and unparking.Á " ú ü&n k A [`Parker`] is in either the notified or unnotified state. The [`park()`][`Parker::park()`] method blocksÁ ü•f c the current thread until the [`Parker`] becomes notified and then puts it back into the unnotifiedÁ üüY V state. The [`unpark()`][`Unparker::unpark()`] method puts it into the notified state.Á Ö ú üÚa ^ This API is similar to [`thread::park()`] and [`Thread::unpark()`] from the standard library.Á ü¼b _ The difference is that the state "token" managed by those functions is shared across an entireÁ üŸc ` thread, and anyone can call [`thread::current()`] to access it. If you use `park` and `unpark`,Á üƒ^ [ but you also call a function that uses `park` and `unpark` internally, that function couldÁ üâc ` cause a deadlock by consuming a wakeup that was intended for you. The [`Parker`] object in thisÁ üÆc ` crate avoids that problem by managing its own state, which isn't shared with unrelated callers.Á ª ú ü®I F [`thread::park()`]: https://doc.rust-lang.org/std/thread/fn.park.htmlÁ üø_ \ [`Thread::unpark()`]: https://doc.rust-lang.org/std/thread/struct.Thread.html#method.unparkÁ üØO L [`thread::current()`]: https://doc.rust-lang.org/std/thread/fn.current.htmlÁ ¨ ú t¬ # ExamplesÁ » ú <¿ ```Á ¤Ç use std::thread;Á äÜ use std::time::Duration;Á Äù use parking::Parker;Á ’
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ú Ô–
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let p = Parker::new();Á ̱
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let u = p.unparker();Á Ë
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ú ÌÏ
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// Notify the parker.Á |é
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u.unpark();Á ù
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ú üý
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; 8 // Wakes up immediately because the parker is notified.Á l¹
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p.park();Á Ç ú ÜË thread::spawn(move || {Á üç 2 / thread::sleep(Duration::from_millis(500));Á œš u.unpark();Á <® });Á ¶ ú üº T Q // Wakes up when `u.unpark()` notifies and then goes back into unnotified state.Á l�
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