Use io_uring for sockets on Linux#124374

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benaadams wants to merge 258 commits intodotnet:mainfrom

benaadams:io_uring

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Commits on Feb 18, 2026

Commits on Feb 19, 2026

Harden reflection shim for trimmer/AOT with DynamicDependency annotations and lazy type resolution
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Fix silent hang in ConnectOperation when connect-with-data fails
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Move DynamicDependency attributes from class declarations to constructors/methods
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Fix SEND_ZC reattach CAS, ARM64 generation store ordering, and inline completions gap
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Initialize out parameters in io_uring shim stubs when io_uring is unavailable
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Batch review fixes: POH buffers, CQ head batching, teardown safety, and test coverage
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Skip io_uring test class on Mono runtime
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Defensive hardening, native shim guards, SQPOLL telemetry, and documentation sweep
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Perf optimizations: SQE zeroing, pre-encoded user_data, cached thread ID, segment cache, and SQE dedup
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Buffer ring bitset search, deferred tail publish, packed multishot accept state, and config logging
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Extract partial classes, sweep stale tracked ops after CQ overflow, rationalize telemetry counters, consolidate capability flags, and audit AggressiveInlining
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Formatting
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Make provided-buffer test exhaustion/recycle helpers static
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Unwrap TargetInvocationException in MpscQueue reflection shim constructor
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Use do-while for SpinWait retry loops to guarantee at least one iteration on single-core
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SOCK_CLOEXEC on accept, EPERM graceful drain, SEND_ZC recovery, telemetry batching, packed capabilities, and native shim hardening
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MpscQueue bounded retry and co-located entries, SQE writer collapse, buffer ring group ID hardening, sweep re-arm cap, wake circuit-breaker, and test coverage
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Per-engine counters, ManagedRingState struct, TrackedOperationState SoA split, cancellation batching, configuration centralization, registered ring fd EINVAL fallback, and test coverage
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Use IThreadPoolWorkItem for cancellation callback worker to avoid delegate wrapper allocation
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Move io_uring test hooks and accessors from src/ to test project with Debug-only compilation and Release stubs
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Defer io_uring initialization to event loop thread for DEFER_TASKRUN submitter_task, drain all non-EFAULT submit errors, and test coverage
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Use IORING_SETUP_R_DISABLED to defer submitter_task, drain all non-EFAULT submit errors, EINVAL registered-ring-fd fallback, and source-specific error context
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MpscQueue incarnation guard to prevent fast-path use-after-recycle on cached segments
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