chore: prepare Tokio v1.8.4 #4237
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Depends on #4226 ## Motivation Currently, the safety invariants and synchronization strategy used in `tokio::sync::oneshot` are not particularly obvious, especially to a new reader. It would be nice to better document this code to make these invariants clearer. ## Solution This branch adds `SAFETY:` comments to the `oneshot` channel implementation. In particular, I've focused on documenting the invariants around when the inner `UnsafeCell` that stores the value can be accessed by the sender and receiver sides of the channel. I still want to take a closer look at when the waker cells can be set, and I'd like to add more documentation there in a follow-up branch. Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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Ugh, the build's failing because there's other stuff that hasn't been backported to the LTS branch, that's cool. |
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For time audit issue: d4848a9 |
Thanks for finding that <3 |
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MacOS is broken: |
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FreeBSD is also borked |
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The borked tests were fixed in #3952 on master. |
Thanks, I'll grab that commit as well. |
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In order to get the macros build tests to pass I had to basically cherry-pick every |
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The tokio-macros crate has its own tags for its previous releases. |
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1.8.4 (November 15, 2021)
This release backports a bug fix from 1.13.1.
Fixed
oneshot::Sender::sendand awaiting aoneshot::Receiverwhen the oneshot has been closed (sync: fix racyUnsafeCellaccess on a closed oneshot #4226)