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91 lines
2.8 KiB
Swift
91 lines
2.8 KiB
Swift
// RUN: %target-run-simple-swift( -Xfrontend -enable-experimental-move-only -Xfrontend -disable-availability-checking %import-libdispatch -parse-as-library) | %FileCheck %s
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// REQUIRES: concurrency
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// REQUIRES: executable_test
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// REQUIRES: libdispatch
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// rdar://106849189 move-only types should be supported in freestanding mode
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// UNSUPPORTED: freestanding
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// UNSUPPORTED: back_deployment_runtime
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// REQUIRES: concurrency_runtime
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import Dispatch
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protocol WithSpecifiedExecutor: Actor {
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nonisolated var executor: any SpecifiedExecutor { get }
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}
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protocol SpecifiedExecutor: SerialExecutor {}
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extension WithSpecifiedExecutor {
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/// Establishes the WithSpecifiedExecutorExecutor as the serial
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/// executor that will coordinate execution for the actor.
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nonisolated var unownedExecutor: UnownedSerialExecutor {
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executor.asUnownedSerialExecutor()
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}
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}
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final class NaiveQueueExecutor: SpecifiedExecutor, CustomStringConvertible {
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let name: String
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let queue: DispatchQueue
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init(name: String, _ queue: DispatchQueue) {
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self.name = name
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self.queue = queue
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}
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public func enqueue(_ job: consuming ExecutorJob) {
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print("\(self): enqueue")
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let unowned = UnownedJob(job)
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queue.sync {
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unowned.runSynchronously(on: self.asUnownedSerialExecutor())
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}
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print("\(self): after run")
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}
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var description: Swift.String {
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"NaiveQueueExecutor(\(name))"
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}
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}
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actor MyActor: WithSpecifiedExecutor {
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nonisolated let executor: any SpecifiedExecutor
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// Note that we don't have to provide the unownedExecutor in the actor itself.
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// We obtain it from the extension on `WithSpecifiedExecutor`.
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init(executor: any SpecifiedExecutor) {
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self.executor = executor
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}
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func test(expectedExecutor: some SerialExecutor, expectedQueue: DispatchQueue) {
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expectedExecutor.preconditionIsolated("Expected to be on: \(expectedExecutor)")
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dispatchPrecondition(condition: .onQueue(expectedQueue))
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print("\(Self.self): on executor \(expectedExecutor)")
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}
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}
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@main struct Main {
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static func main() async {
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print("begin")
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let name = "CustomQueue"
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let queue = DispatchQueue(label: name)
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let one = NaiveQueueExecutor(name: name, queue)
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let actor = MyActor(executor: one)
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await actor.test(expectedExecutor: one, expectedQueue: queue)
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await actor.test(expectedExecutor: one, expectedQueue: queue)
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await actor.test(expectedExecutor: one, expectedQueue: queue)
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print("end")
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}
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}
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// CHECK: begin
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// CHECK-NEXT: NaiveQueueExecutor(CustomQueue): enqueue
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// CHECK-NEXT: MyActor: on executor NaiveQueueExecutor(CustomQueue)
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// CHECK-NEXT: MyActor: on executor NaiveQueueExecutor(CustomQueue)
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// CHECK-NEXT: MyActor: on executor NaiveQueueExecutor(CustomQueue)
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// CHECK-NEXT: NaiveQueueExecutor(CustomQueue): after run
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// CHECK-NEXT: end
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