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doc: remove incorrect panic section for Builder::worker_threads #4849
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Darksonn
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hds:runtime-builder-woker-threads-docs
Jul 23, 2022
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doc: remove incorrect panic section for Builder::worker_threads #4849
Darksonn
merged 1 commit into
tokio-rs:master
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hds:runtime-builder-woker-threads-docs
Jul 23, 2022
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The documentation for the runtime `Builder::worker_threads` function incorrectly stated that it would panic if used when constructing a `current_thread` runtime. In truth, the call to the function has no effect. Since adding the described panic to the code could cause new panics in existing code using tokio, the documentation has been modified to describe the existing behavior. Refs: tokio-rs#4773
Darksonn
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Thanks.
crapStone
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Sep 11, 2022
This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [tokio](https://tokio.rs) ([source](https://github.com/tokio-rs/tokio)) | dependencies | minor | `1.20.1` -> `1.21.0` | | [tokio](https://tokio.rs) ([source](https://github.com/tokio-rs/tokio)) | dev-dependencies | minor | `1.20.1` -> `1.21.0` | --- ### Release Notes <details> <summary>tokio-rs/tokio</summary> ### [`v1.21.0`](https://github.com/tokio-rs/tokio/releases/tag/tokio-1.21.0) [Compare Source](tokio-rs/tokio@tokio-1.20.1...tokio-1.21.0) ##### 1.21.0 (September 2, 2022) This release is the first release of Tokio to intentionally support WASM. The `sync,macros,io-util,rt,time` features are stabilized on WASM. Additionally the wasm32-wasi target is given unstable support for the `net` feature. ##### Added - net: add `device` and `bind_device` methods to TCP/UDP sockets ([#​4882]) - net: add `tos` and `set_tos` methods to TCP and UDP sockets ([#​4877]) - net: add security flags to named pipe `ServerOptions` ([#​4845]) - signal: add more windows signal handlers ([#​4924]) - sync: add `mpsc::Sender::max_capacity` method ([#​4904]) - sync: implement Weak version of `mpsc::Sender` ([#​4595]) - task: add `LocalSet::enter` ([#​4765]) - task: stabilize `JoinSet` and `AbortHandle` ([#​4920]) - tokio: add `track_caller` to public APIs ([#​4805], [#​4848], [#​4852]) - wasm: initial support for `wasm32-wasi` target ([#​4716]) ##### Fixed - miri: improve miri compatibility by avoiding temporary references in `linked_list::Link` impls ([#​4841]) - signal: don't register write interest on signal pipe ([#​4898]) - sync: add `#[must_use]` to lock guards ([#​4886]) - sync: fix hang when calling `recv` on closed and reopened broadcast channel ([#​4867]) - task: propagate attributes on task-locals ([#​4837]) ##### Changed - fs: change panic to error in `File::start_seek` ([#​4897]) - io: reduce syscalls in `poll_read` ([#​4840]) - process: use blocking threadpool for child stdio I/O ([#​4824]) - signal: make `SignalKind` methods const ([#​4956]) ##### Internal changes - rt: extract `basic_scheduler::Config` ([#​4935]) - rt: move I/O driver into `runtime` module ([#​4942]) - rt: rename internal scheduler types ([#​4945]) ##### Documented - chore: fix typos and grammar ([#​4858], [#​4894], [#​4928]) - io: fix typo in `AsyncSeekExt::rewind` docs ([#​4893]) - net: add documentation to `try_read()` for zero-length buffers ([#​4937]) - runtime: remove incorrect panic section for `Builder::worker_threads` ([#​4849]) - sync: doc of `watch::Sender::send` improved ([#​4959]) - task: add cancel safety docs to `JoinHandle` ([#​4901]) - task: expand on cancellation of `spawn_blocking` ([#​4811]) - time: clarify that the first tick of `Interval::tick` happens immediately ([#​4951]) ##### Unstable - rt: add unstable option to disable the LIFO slot ([#​4936]) - task: fix incorrect signature in `Builder::spawn_on` ([#​4953]) - task: make `task::Builder::spawn*` methods fallible ([#​4823]) [#​4595]: tokio-rs/tokio#4595 [#​4716]: tokio-rs/tokio#4716 [#​4765]: tokio-rs/tokio#4765 [#​4805]: tokio-rs/tokio#4805 [#​4811]: tokio-rs/tokio#4811 [#​4823]: tokio-rs/tokio#4823 [#​4824]: tokio-rs/tokio#4824 [#​4837]: tokio-rs/tokio#4837 [#​4840]: tokio-rs/tokio#4840 [#​4841]: tokio-rs/tokio#4841 [#​4845]: tokio-rs/tokio#4845 [#​4848]: tokio-rs/tokio#4848 [#​4849]: tokio-rs/tokio#4849 [#​4852]: tokio-rs/tokio#4852 [#​4858]: tokio-rs/tokio#4858 [#​4867]: tokio-rs/tokio#4867 [#​4877]: tokio-rs/tokio#4877 [#​4882]: tokio-rs/tokio#4882 [#​4886]: tokio-rs/tokio#4886 [#​4893]: tokio-rs/tokio#4893 [#​4894]: tokio-rs/tokio#4894 [#​4897]: tokio-rs/tokio#4897 [#​4898]: tokio-rs/tokio#4898 [#​4901]: tokio-rs/tokio#4901 [#​4904]: tokio-rs/tokio#4904 [#​4920]: tokio-rs/tokio#4920 [#​4924]: tokio-rs/tokio#4924 [#​4928]: tokio-rs/tokio#4928 [#​4935]: tokio-rs/tokio#4935 [#​4936]: tokio-rs/tokio#4936 [#​4937]: tokio-rs/tokio#4937 [#​4942]: tokio-rs/tokio#4942 [#​4945]: tokio-rs/tokio#4945 [#​4951]: tokio-rs/tokio#4951 [#​4953]: tokio-rs/tokio#4953 [#​4956]: tokio-rs/tokio#4956 [#​4959]: tokio-rs/tokio#4959 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about these updates again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox. --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzMi4xODcuMCIsInVwZGF0ZWRJblZlciI6IjMyLjE4Ny4wIn0=--> Co-authored-by: cabr2-bot <cabr2.help@gmail.com> Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1532 Reviewed-by: crapStone <crapstone@noreply.codeberg.org> Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org> Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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Motivation
The documentation for the function
Builder::worker_threads
states that if it is usedwith
current_thread
runtime it will panic. However it doesn't panic, it appears toignore the value set by the call instead.
Documentation:
https://docs.rs/tokio/latest/tokio/runtime/struct.Builder.html#method.worker_threads
While this is probably not going to catch a lot of people out, it would be better if it
was correct.
Also, this function documentation had 2
Panics
sections in it. 🤷♀️Solution
The documentation for the runtime
Builder::worker_threads
functionincorrectly stated that it would panic if used when constructing a
current_thread
runtime. In truth, the call to the function has noeffect.
Since adding the described panic to the code could cause new panics in
existing code using tokio, the documentation has been modified to
describe the existing behavior.
Fixes: #4773