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io: use memchr from libc #5558

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merged 4 commits into from Mar 19, 2023
Merged

io: use memchr from libc #5558

merged 4 commits into from Mar 19, 2023

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Darksonn
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We have a general policy of biasing towards fewer dependencies. Therefore, I think it makes sense to just use the libc implementation of memchr rather than pulling in an entire crate just for the implementation of AsyncRead::read_until.

I added a simple wrapper around the libc memchr function and a few tests to sanity check the wrapper.

@Darksonn Darksonn added A-tokio Area: The main tokio crate M-io Module: tokio/io labels Mar 19, 2023
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@paolobarbolini paolobarbolini left a comment

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What would happen if someone imported tokio with only the io-util feature enabled? It looks like nothing would be enabling the optional libc in that case

@Darksonn
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@paolobarbolini Nice spotted. The ci failure is due to exactly the problem you mentioned.

@Darksonn Darksonn enabled auto-merge (squash) March 19, 2023 09:43
@Darksonn Darksonn merged commit 0a93ed7 into master Mar 19, 2023
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@Darksonn Darksonn deleted the alice/memchr branch March 19, 2023 10:49
crapStone pushed a commit to Calciumdibromid/CaBr2 that referenced this pull request Mar 29, 2023
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [tokio](https://tokio.rs) ([source](https://github.com/tokio-rs/tokio)) | dependencies | minor | `1.26.0` -> `1.27.0` |
| [tokio](https://tokio.rs) ([source](https://github.com/tokio-rs/tokio)) | dev-dependencies | minor | `1.26.0` -> `1.27.0` |

---

### Release Notes

<details>
<summary>tokio-rs/tokio</summary>

### [`v1.27.0`](https://github.com/tokio-rs/tokio/releases/tag/tokio-1.27.0): Tokio v1.27.0

[Compare Source](tokio-rs/tokio@tokio-1.26.0...tokio-1.27.0)

##### 1.27.0 (March 27th, 2023)

This release bumps the MSRV of Tokio to 1.56. ([#&#8203;5559])

##### Added

-   io: add `async_io` helper method to sockets ([#&#8203;5512])
-   io: add implementations of `AsFd`/`AsHandle`/`AsSocket` ([#&#8203;5514], [#&#8203;5540])
-   net: add `UdpSocket::peek_sender()` ([#&#8203;5520])
-   sync: add `RwLockWriteGuard::{downgrade_map, try_downgrade_map}` ([#&#8203;5527])
-   task: add `JoinHandle::abort_handle` ([#&#8203;5543])

##### Changed

-   io: use `memchr` from `libc` ([#&#8203;5558])
-   macros: accept path as crate rename in `#[tokio::main]` ([#&#8203;5557])
-   macros: update to syn 2.0.0 ([#&#8203;5572])
-   time: don't register for a wakeup when `Interval` returns `Ready` ([#&#8203;5553])

##### Fixed

-   fs: fuse std iterator in `ReadDir` ([#&#8203;5555])
-   tracing: fix `spawn_blocking` location fields ([#&#8203;5573])
-   time: clean up redundant check in `Wheel::poll()` ([#&#8203;5574])

##### Documented

-   macros: define cancellation safety ([#&#8203;5525])
-   io: add details to docs of `tokio::io::copy[_buf]` ([#&#8203;5575])
-   io: refer to `ReaderStream` and `StreamReader` in module docs ([#&#8203;5576])

[#&#8203;5512]: tokio-rs/tokio#5512

[#&#8203;5514]: tokio-rs/tokio#5514

[#&#8203;5520]: tokio-rs/tokio#5520

[#&#8203;5525]: tokio-rs/tokio#5525

[#&#8203;5527]: tokio-rs/tokio#5527

[#&#8203;5540]: tokio-rs/tokio#5540

[#&#8203;5543]: tokio-rs/tokio#5543

[#&#8203;5553]: tokio-rs/tokio#5553

[#&#8203;5555]: tokio-rs/tokio#5555

[#&#8203;5557]: tokio-rs/tokio#5557

[#&#8203;5558]: tokio-rs/tokio#5558

[#&#8203;5559]: tokio-rs/tokio#5559

[#&#8203;5572]: tokio-rs/tokio#5572

[#&#8203;5573]: tokio-rs/tokio#5573

[#&#8203;5574]: tokio-rs/tokio#5574

[#&#8203;5575]: tokio-rs/tokio#5575

[#&#8203;5576]: tokio-rs/tokio#5576

</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, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNS4yNC41IiwidXBkYXRlZEluVmVyIjoiMzUuMjQuNSJ9-->

Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1838
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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4 participants