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doc: add note about AsyncResource for Worker pooling #28023

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doc: add note about AsyncResource for Worker pooling #28023

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doc: add note about AsyncResource for Worker pooling
addaleax Jun 2, 2019
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fixup! doc: add note about AsyncResource for Worker pooling
addaleax Jun 2, 2019
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5 changes: 5 additions & 0 deletions doc/api/worker_threads.md
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Expand Up @@ -49,6 +49,10 @@ The above example spawns a Worker thread for each `parse()` call. In actual
practice, use a pool of Workers instead for these kinds of tasks. Otherwise, the
overhead of creating Workers would likely exceed their benefit.

When implementing a worker pool, use the [`AsyncResource`][] API to inform
diagnostic tools (e.g. in order to provide asynchronous stack traces) about the
correlation between tasks and their outcomes.

## worker.isMainThread
<!-- YAML
added: v10.5.0
Expand Down Expand Up @@ -653,6 +657,7 @@ active handle in the event system. If the worker is already `unref()`ed calling
`unref()` again will have no effect.

[`'close'` event]: #worker_threads_event_close
[`AsyncResource`]: async_hooks.html#async_hooks_class_asyncresource
[`Buffer`]: buffer.html
[`EventEmitter`]: events.html
[`EventTarget`]: https://developer.mozilla.org/en-US/docs/Web/API/EventTarget
Expand Down