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task: fix missing #[track_caller] in spawn_local #4483

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merged 1 commit into from Feb 9, 2022
Merged

task: fix missing #[track_caller] in spawn_local #4483

merged 1 commit into from Feb 9, 2022

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hawkw
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@hawkw hawkw commented Feb 9, 2022

PR #3881 factored out the spawning of local tasks on a LocalSet into a
function spawn_local_inner, so that the implementation could be shared
with the task::Builder API. But, that PR neglected to add a
#[track_caller] attribute to spawn_local_inner, so the tracing
spans for local tasks are all generated with spawn_local_inner as
their spawn location, rather than forwarding the actual spawn location
from the calling function.

This causes pretty useless results when using tokio-console with code
that spawns a number of local tasks, such as Actix
(https://old.reddit.com/r/rust/comments/snt5fq/can_tokioconsole_profile_actixrt/)

This commit fixes the issue by adding the missing #[track_caller]
attribute.

@hawkw
task: fix missing #[track_caller] in spawn_local
428cb1d 
PR #3881 factored out the spawning of local tasks on a `LocalSet` into a
function `spawn_local_inner`, so that the implementation could be shared
with the `task::Builder` API. But, that PR neglected to add a
`#[track_caller]` attribute to `spawn_local_inner`, so the `tracing`
spans for local tasks are all generated with `spawn_local_inner` as
their spawn location, rather than forwarding the actual spawn location
from the calling function.

This causes pretty useless results when using `tokio-console` with code
that spawns a number of local tasks, such as Actix
(https://old.reddit.com/r/rust/comments/snt5fq/can_tokioconsole_profile_actixrt/)

This commit fixes the issue by adding the missing `#[track_caller]`
attribute.
msdrigg
msdrigg approved these changes Feb 9, 2022
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Glad to see this fix. Thanks!

@Darksonn Darksonn added A-tokio Area: The main tokio crate M-tracing Tracing support in Tokio labels Feb 9, 2022
@Darksonn Darksonn merged commit ca51f6a into master Feb 9, 2022
@Darksonn Darksonn deleted the eliza/missing-track-caller branch February 9, 2022 09:12
@jeffutter jeffutter mentioned this pull request Feb 10, 2022
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@msdrigg msdrigg mentioned this pull request Feb 13, 2022
Closed
hawkw added a commit that referenced this pull request Feb 15, 2022
@hawkw
chore: prepare Tokio v1.16.2 release
a6dd24a 
# 1.16.2 (February 15, 2022)

This release updates the minimum supported Rust version (MSRV) to 1.49,
the `mio` dependency to v0.8, and the (optional) `parking_lot`
dependency to v0.12. Additionally, it contains several bug fixes, as
well as internal refactoring and performance improvements.

### Fixed

- time: prevent panicking in `sleep` with large durations ([#4495])
- time: eliminate potential panics in `Instant` arithmetic on platforms
  where `Instant::now` is not monotonic ([#4461])
- io: fix `DuplexStream` not participating in cooperative yielding
  ([#4478])
- rt: fix potential double panic when dropping a `JoinHandle` ([#4430])

### Changed

- update minimum supported Rust version to 1.49 ([#4457])
- update `parking_lot` dependency to v0.12.0 ([#4459])
- update `mio` dependency to v0.8 ([#4449])
- rt: remove an unnecessary lock in the blocking pool ([#4436])
- rt: remove an unnecessary enum in the basic scheduler ([#4462])
- time: use bit manipulation instead of modulo to improve performance
  ([#4480])
- net: use `std::future::Ready` instead of our own `Ready` future
  ([#4271])
- replace deprecated `atomic::spin_loop_hint` with `hint::spin_loop`
  ([#4491])
- fix miri failures in intrusive linked lists ([#4397])

### Documented

- io: add an example for `tokio::process::ChildStdin` ([#4479])

### Unstable

The following changes only apply when building with `--cfg
tokio_unstable`:

- task: fix missing location information in `tracing` spans generated by
  `spawn_local` ([#4483])
- task: add `JoinSet` for managing sets of tasks ([#4335])
- metrics: fix compilation error on MIPS ([#4475])
- metrics: fix compilation error on arm32v7 ([#4453])

[#4495]: #4495
[#4461]: #4461
[#4478]: #4478
[#4430]: #4430
[#4457]: #4457
[#4459]: #4459
[#4449]: #4449
[#4462]: #4462
[#4436]: #4436
[#4480]: #4480
[#4271]: #4271
[#4491]: #4491
[#4397]: #4397
[#4479]: #4479
[#4483]: #4483
[#4335]: #4335
[#4475]: #4475
[#4453]: #4453
@hawkw hawkw mentioned this pull request Feb 15, 2022
Merged
hawkw added a commit that referenced this pull request Feb 16, 2022
@hawkw
chore: prepare Tokio v1.17.0 release (#4504)
43c224f 
# 1.17.0 (February 16, 2022)

This release updates the minimum supported Rust version (MSRV) to 1.49,
the `mio` dependency to v0.8, and the (optional) `parking_lot`
dependency to v0.12. Additionally, it contains several bug fixes, as
well as internal refactoring and performance improvements.

### Fixed

- time: prevent panicking in `sleep` with large durations ([#4495])
- time: eliminate potential panics in `Instant` arithmetic on platforms
  where `Instant::now` is not monotonic ([#4461])
- io: fix `DuplexStream` not participating in cooperative yielding
  ([#4478])
- rt: fix potential double panic when dropping a `JoinHandle` ([#4430])

### Changed

- update minimum supported Rust version to 1.49 ([#4457])
- update `parking_lot` dependency to v0.12.0 ([#4459])
- update `mio` dependency to v0.8 ([#4449])
- rt: remove an unnecessary lock in the blocking pool ([#4436])
- rt: remove an unnecessary enum in the basic scheduler ([#4462])
- time: use bit manipulation instead of modulo to improve performance
  ([#4480])
- net: use `std::future::Ready` instead of our own `Ready` future
  ([#4271])
- replace deprecated `atomic::spin_loop_hint` with `hint::spin_loop`
  ([#4491])
- fix miri failures in intrusive linked lists ([#4397])

### Documented

- io: add an example for `tokio::process::ChildStdin` ([#4479])

### Unstable

The following changes only apply when building with `--cfg
tokio_unstable`:

- task: fix missing location information in `tracing` spans generated by
  `spawn_local` ([#4483])
- task: add `JoinSet` for managing sets of tasks ([#4335])
- metrics: fix compilation error on MIPS ([#4475])
- metrics: fix compilation error on arm32v7 ([#4453])

[#4495]: #4495
[#4461]: #4461
[#4478]: #4478
[#4430]: #4430
[#4457]: #4457
[#4459]: #4459
[#4449]: #4449
[#4462]: #4462
[#4436]: #4436
[#4480]: #4480
[#4271]: #4271
[#4491]: #4491
[#4397]: #4397
[#4479]: #4479
[#4483]: #4483
[#4335]: #4335
[#4475]: #4475
[#4453]: #4453
@domodwyer domodwyer mentioned this pull request Apr 13, 2022
Merged
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@Noah-Kennedy Noah-Kennedy Noah-Kennedy approved these changes

@msdrigg msdrigg msdrigg approved these changes

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