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47956908b7
The concurrency runtime now deploys back to macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, which corresponds to the 5.1 release of the stdlib. Adjust macro usages accordingly.
69 lines
2.1 KiB
Swift
69 lines
2.1 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2021 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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import Swift
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/// A singleton actor whose executor is equivalent to the main
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/// dispatch queue.
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@available(SwiftStdlib 5.1, *)
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@globalActor public final actor MainActor: GlobalActor {
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public static let shared = MainActor()
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@inlinable
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public nonisolated var unownedExecutor: UnownedSerialExecutor {
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#if compiler(>=5.5) && $BuiltinBuildMainExecutor
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return UnownedSerialExecutor(Builtin.buildMainActorExecutorRef())
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#else
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fatalError("Swift compiler is incompatible with this SDK version")
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#endif
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}
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@inlinable
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public static var sharedUnownedExecutor: UnownedSerialExecutor {
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#if compiler(>=5.5) && $BuiltinBuildMainExecutor
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return UnownedSerialExecutor(Builtin.buildMainActorExecutorRef())
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#else
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fatalError("Swift compiler is incompatible with this SDK version")
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#endif
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}
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@inlinable
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public nonisolated func enqueue(_ job: UnownedJob) {
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_enqueueOnMain(job)
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}
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}
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@available(SwiftStdlib 5.1, *)
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extension MainActor {
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/// Execute the given body closure on the main actor.
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///
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/// Historical ABI entry point, superceded by the Sendable version that is
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/// also inlined to back-deploy a semantic fix where this operation would
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/// not hop back at the end.
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@usableFromInline
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static func run<T>(
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resultType: T.Type = T.self,
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body: @MainActor @Sendable () throws -> T
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) async rethrows -> T {
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return try await body()
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}
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/// Execute the given body closure on the main actor.
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@_alwaysEmitIntoClient
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public static func run<T: Sendable>(
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resultType: T.Type = T.self,
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body: @MainActor @Sendable () throws -> T
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) async rethrows -> T {
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return try await body()
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}
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}
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