doc: explain Worker semantics in async_hooks.md
PR-URL: https://github.com/nodejs/node/pull/20876 Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Shingo Inoue <leko.noor@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: John-David Dalton <john.david.dalton@gmail.com> Reviewed-By: Gus Caplan <me@gus.host>
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@ -21,6 +21,9 @@ A resource can also be closed before the callback is called. `AsyncHook` does
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not explicitly distinguish between these different cases but will represent them
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not explicitly distinguish between these different cases but will represent them
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as the abstract concept that is a resource.
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as the abstract concept that is a resource.
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If [`Worker`][]s are used, each thread has an independent `async_hooks`
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interface, and each thread will use a new set of async IDs.
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## Public API
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## Public API
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### Overview
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### Overview
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@ -224,7 +227,7 @@ clearTimeout(setTimeout(() => {}, 10));
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```
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```
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Every new resource is assigned an ID that is unique within the scope of the
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Every new resource is assigned an ID that is unique within the scope of the
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current process.
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current Node.js instance.
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###### `type`
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###### `type`
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@ -725,3 +728,4 @@ never be called.
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[Hook Callbacks]: #async_hooks_hook_callbacks
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[Hook Callbacks]: #async_hooks_hook_callbacks
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[PromiseHooks]: https://docs.google.com/document/d/1rda3yKGHimKIhg5YeoAmCOtyURgsbTH_qaYR79FELlk
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[PromiseHooks]: https://docs.google.com/document/d/1rda3yKGHimKIhg5YeoAmCOtyURgsbTH_qaYR79FELlk
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[promise execution tracking]: #async_hooks_promise_execution_tracking
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[promise execution tracking]: #async_hooks_promise_execution_tracking
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[`Worker`]: worker.html#worker_worker
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