KeyedAsyncLock

actor KeyedAsyncLock

A mutual-exclusion lock keyed by ID: callers asking for the same key wait their turn, and callers with different keys don’t affect each other.

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  • Declaration

    Swift

    private var held: Set<UUID>
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  • Declaration

    Swift

    private var waiters: [UUID : [CheckedContinuation<Void, Never>]]
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  • lock(_:) Asynchronous

    Waits until nobody else holds key, then holds it. Every lock must be paired with an unlock.

    Declaration

    Swift

    func lock(_ key: UUID) async
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  • Releases key, handing it straight to the longest waiter if there is one.

    Declaration

    Swift

    func unlock(_ key: UUID)
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