Implement thread parking for xous #116839
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Just need to make the one change, and I think it's good to merge.
It's very similar to a local patch I'm carrying while trying to debug threading issues. I have this particular patch disabled in my local branch in order to eliminate potential issues with condvars. Thread parking improves features such as channels, so I think this is good to merge.
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I forgot about the free message... There shouldn't be any waiting threads, but it's probably best to let the ticktimer server destroy the table entries. |
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The Miri subtree was changed cc @rust-lang/miri |
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Sorry, wrong branch 🤦 |
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@bors r+ |
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#116839 (Implement thread parking for xous) - rust-lang#118265 (remove the memcpy-on-equal-ptrs assumption) - rust-lang#118269 (Unify `TraitRefs` and `PolyTraitRefs` in `ValuePairs`) - rust-lang#118394 (Remove HIR opkinds) - rust-lang#118398 (Add proper cfgs in std) - rust-lang#118419 (Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context) - rust-lang#118422 (Fix coroutine validation for mixed panic strategy) r? `@ghost` `@rustbot` modify labels: rollup
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#116839 (Implement thread parking for xous) - rust-lang#118265 (remove the memcpy-on-equal-ptrs assumption) - rust-lang#118269 (Unify `TraitRefs` and `PolyTraitRefs` in `ValuePairs`) - rust-lang#118394 (Remove HIR opkinds) - rust-lang#118398 (Add proper cfgs in std) - rust-lang#118419 (Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context) - rust-lang#118422 (Fix coroutine validation for mixed panic strategy) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#116839 - joboet:xous_thread_parking, r=m-ou-se Implement thread parking for xous This follows the pattern set by [the Windows parker](https://github.com/rust-lang/rust/blob/ddef56d5dfa18f169af9db912dc8e8343797eebb/library/std/src/sys/windows/thread_parking.rs) when it uses keyed events. An atomic variable is used to track the state and optimize the fast path, while notifications are send via the ticktime server to block and unblock the thread. ping `@xobs` `@rustbot` label +T-libs +A-atomic r? libs
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This follows the pattern set by the Windows parker when it uses keyed events. An atomic variable is used to track the state and optimize the fast path, while notifications are send via the ticktime server to block and unblock the thread.
ping @xobs
@rustbot label +T-libs +A-atomic
r? libs