60 lines
21 KiB
Plaintext
60 lines
21 KiB
Plaintext
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!<arch>
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/ 0 0 0 0 8 `
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// 74 `
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sync_wrapper-8ad4221fff0d0c88.sync_wrapper.bc7b009d502887f8-cgu.0.rcgu.o/
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lib.rmeta/ 0 0 0 644 19456 `
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ELF · €J @ @ GNU À rust
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8H #rustc 1.96.0 (ac68faa20 2026-05-25)ÁíàÄTËŸ ÜJîÄ)'ß\¥! -3d1337db07d0b3aeÁ ¤°ð ¾ä-±($²ï=©Ã -7e98a21bfd32b0edÁ‰
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SyncStreamÁT„: » futuresÁœã9 í
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SyncWrapperÁ
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#í ×$Ô ` p,Ú ¿c p Âc ˆLá c ž ö „¾ FutureÁ4‡ ‚Ø k<š Ì� ·$£ œØ üд; üÐL I A mutual exclusion primitive that relies on static type information onlyÁ � ú ü¡‚ This library is inspired by [this discussion](https://internals.rust-lang.org/t/what-shall-sync-mean-across-an-await/12020/2).Á +https://developer.actyx.com/img/favicon.icoÁ„ï (https://developer.actyx.com/img/logo.svgÁl«
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#í! ×" ` p! ¿c p2 Âc ˆ! c ž „¾ ¹ ‚Ø k Ì� · œØ ÁÄÇ$ |  Π·º™œDñ �tÿ }üÂU rudgh ü®L Š û ú üÿa ^ In some cases synchronization can be proven statically: whenever you hold an exclusive `&mut`Á üá ^ [ reference, the Rust type system ensures that no other part of the program can hold anotherÁ üÀ
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` ] reference to the data. Therefore it is safe to access it even if the current thread obtainedÁ ü¡ c ` this reference via a channel. Whenever this is the case, the overhead of allocating and lockingÁ ü… < 9 a [`Mutex`] can be avoided by using this static version.Á  ú üÆ c ` One example where this is often applicable is [`Future`], which requires an exclusive referenceÁ üª
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_ \ for its [`poll`] method: While a given `Future` implementation may not be safe to access byÁ üŠ^ [ multiple threads concurrently, the executor can only run the `Future` on one thread at anyÁ üé_ \ given time, making it [`Sync`] in practice as long as the implementation is `Send`. You canÁ üÉ] Z therefore use the static mutex to prove that your data structure is `Sync` even though itÁ ì§ contains such a `Future`.Á Å ú lÉ
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# ExampleÁ × ú <Û ```Á üã" use sync_wrapper::SyncWrapper;Á ä† use std::future::Future;Á £ ú ¤§ struct MyThing {Á ü¼E B future: SyncWrapper<Box<dyn Future<Output = String> + Send>>,Á ,‚ }Á ˆ ú ”Œ impl MyThing {Á üŸX U // all accesses to `self.future` now require an exclusive reference or ownershipÁ ,ø ¯/ þ ú ü‚ fn assert_sync<T: Sync>() {}Á £ ú ì§ assert_sync::<MyThing>();Á <Å Ö- Í ú üÑC @ [`Mutex`]: https://doc.rust-lang.org/std/sync/struct.Mutex.htmlÁ ü•F C [`Future`]: https://doc.rust-lang.org/std/future/trait.Future.htmlÁ üÜP M [`poll`]: https://doc.rust-lang.org/std/future/trait.Future.html#method.pollÁ üB ? [`Sync`]: https://doc.rust-lang.org/std/marker/trait.Sync.htmlÁ \� ¥ ÍìÚ œ ˆŽM}èpô Ú q Q Ú
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