Use VoidTaskResult for void returns in runtime async
#122285
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Removes some abstraction and unifies behavior with async 1, at the cost of slightly larger instances for void methods.
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Pull request overview
This PR simplifies the runtime async implementation by removing an abstraction layer and unifying the handling of void-returning async methods with other async methods. The change uses VoidTaskResult as a concrete type parameter instead of maintaining a separate non-generic task implementation.
Key Changes:
- Removed the
IRuntimeAsyncTaskOps<T>interface and its implementations, eliminating unnecessary abstraction - Consolidated
RuntimeAsyncTask(non-generic) andRuntimeAsyncTask<T>into a single generic class by usingVoidTaskResultfor void methods - Converted static generic operations to instance methods for simpler and more direct code
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This was referenced Dec 8, 2025
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VSadov
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Dec 8, 2025
src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/AsyncHelpers.CoreCLR.cs
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Very nice simplification! Looks fairly straightforward too. Just had a question about |
VSadov
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Dec 8, 2025
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Removes some abstraction and unifies behavior with async 1 at the cost of these rarely created tasks being slightly larger for void methods.
Fix #122235