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rt: fix error when calling block_on twice #162

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merged 1 commit into from
Nov 3, 2022

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Noah-Kennedy
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This fixes an issue where we would try and spawn a separate background task on the LocalSet for watching the AsyncFd for the uring instance every time we called block_on. Now, we only spawn at runtime creation.

This fixes an issue where we would try and spawn a separate background task on the `LocalSet` for watching the `AsyncFd` for the uring instance every time we called `block_on`. Now, we only spawn at runtime creation.
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CC @ollie-etl @FrankReh

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This is one of those changes, if it works at least as well as things did before, it looks good. Without a formal proof of correctness, who's to say whether some other corner case is still lurking. I like it.

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@Noah-Kennedy Noah-Kennedy merged commit 046d09b into master Nov 3, 2022
@Noah-Kennedy Noah-Kennedy deleted the noah/block-on-twice branch November 3, 2022 02:22
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FrankReh commented Nov 3, 2022

Just one question about the commented line 107 really.

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@Noah-Kennedy Nice

Noah-Kennedy pushed a commit that referenced this pull request Nov 5, 2022
# 0.4.0 (November 5th, 2022)

### Fixed

- Fix panic in Deref/DerefMut for Slice extending into uninitialized
part of the buffer ([#52])
- docs: all-features = true ([#84])
- fix fs unit tests to avoid parallelism ([#121])
- Box the socket address to allow moving the Connect future ([#126])
- rt: Fix data race ([#146])

### Added

- Implement fs::File::readv_at()/writev_at() ([#87])
- fs: implement FromRawFd for File ([#89])
- Implement `AsRawFd` for `TcpStream` ([#94])
- net: add TcpListener.local_addr method ([#107])
- net: add TcpStream.write_all ([#111])
- driver: add Builder API as an option to start ([#113])
- Socket and TcpStream shutdown ([#124])
- fs: implement fs::File::from_std ([#131])
- net: implement FromRawFd for TcpStream ([#132])
- fs: implement OpenOptionsExt for OpenOptions ([#133])
- Add NoOp support ([#134])
- Add writev to TcpStream ([#136])
- sync TcpStream, UnixStream and UdpSocket functionality ([#141])
- Add benchmarks for no-op submission ([#144])
- Expose runtime structure ([#148])

### Changed

- driver: batch submit requests and add benchmark ([#78])
- Depend on io-uring version ^0.5.8 ([#153])

### Internal Improvements

- chore: fix clippy lints ([#99])
- io: refactor post-op logic in ops into Completable ([#116])
- Support multi completion events: v2 ([#130])
- simplify driver operation futures ([#139])
- rt: refactor runtime to avoid Rc\<RefCell\<...>> ([#142])
- Remove unused dev-dependencies ([#143])
- chore: types and fields explicitly named ([#149])
- Ignore errors from uring while cleaning up ([#154])
- rt: drop runtime before driver during shutdown ([#155])
- rt: refactor drop logic ([#157])
- rt: fix error when calling block_on twice ([#162])

### CI changes

- chore: update actions/checkout action to v3 ([#90])
- chore: add all-systems-go ci check ([#98])
- chore: add clippy to ci ([#100])
- ci: run cargo test --doc ([#135])


[#52]: #52
[#78]: #78
[#84]: #84
[#87]: #87
[#89]: #89
[#90]: #90
[#94]: #94
[#98]: #98
[#99]: #99
[#100]: #100
[#107]: #107
[#111]: #111
[#113]: #113
[#116]: #116
[#121]: #121
[#124]: #124
[#126]: #126
[#130]: #130
[#131]: #131
[#132]: #132
[#133]: #133
[#134]: #134
[#135]: #135
[#136]: #136
[#139]: #139
[#141]: #141
[#142]: #142
[#143]: #143
[#144]: #144
[#146]: #146
[#148]: #148
[#149]: #149
[#153]: #153
[#154]: #154
[#155]: #155
[#157]: #157
[#162]: #162
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3 participants