Move CoreCLR over to the managed wait subsystem#117788

Merged

jkoritzinsky merged 68 commits intodotnet:mainfrom

jkoritzinsky:coreclr-managed-wait

Dec 11, 2025

Commits on Aug 28, 2025

Use the wait subsystem on CoreCLR on Unix platforms.
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committed
Remove wait subsystem qcall entrypoints
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Remove named mutex support from the CoreCLR PAL
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Fix qcalls and managed/native sizes
jkoritzinsky
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Unify LowLevelLifoSemaphore implementations for Unix to use the wait subsystem
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Hook up the "thread exiting" callback
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Delete Mutex support from the PAL
jkoritzinsky
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Remove concept of ownership and abandonment and other vistigial components of mutexes from the CoreCLR PAL.
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Change spinlock scoping
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Remove prioritized waits from the PAL and remove WAIT_ABANDONED usage
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Run "OnThreadExiting" during thread finalization. Testing with Mono has already hardened the cases that this makes weird, so we can reliably do it with CoreCLR
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Cleanup on the finalizer thread when a thread is detached, not when the managed thread object is finalized.
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Call OnThreadExiting outside of the thread store lock
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pragma out the error that only occurs on platforms that don't use the wait subsystem
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Use shared wait handling for Windows instead of calling into the VM on Windows
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Host deadlock detection doesn't exist any more
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Don't call back into the sync context from the native "do appropriate wait" worker as the only handles it gets on Unix are PAL handles, not wait subsystem handles (and for Windows, we don't need to…
jkoritzinsky
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named sync primitives don't exist on non-Windows in CoreCLR any more
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Share the sleep impl between all runtimes on Windows and unix
jkoritzinsky
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Commits on Sep 11, 2025

Increase the refcount to ensure that the exposed thread object can't be cleaned up before we run our managed cleanup in CleanupDetachedThreads
jkoritzinsky
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Commits on Sep 12, 2025

Fix unix build
jkoritzinsky
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Commits on Oct 30, 2025

Commits on Oct 31, 2025

Clean up foreign threads in their own helper thread instead of on the finalizer.
jkoritzinsky
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Commits on Nov 5, 2025

Commits on Nov 6, 2025

Don't shut down the cleanup thread. It can die when the process dies
jkoritzinsky
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Commits on Nov 7, 2025

Commits on Dec 6, 2025

Update pal.h

jkoritzinsky
and
jkotas
authored

Commits on Dec 8, 2025

Merge branch 'coreclr-managed-wait' of https://github.com/jkoritzinsky/runtime; branch 'main' of https://github.com/dotnet/runtime into coreclr-managed-wait
jkoritzinsky
committed

Commits on Dec 9, 2025

Commits on Dec 10, 2025