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// RUN: %target-run-simple-swift( -Xfrontend -disable-availability-checking %import-libdispatch -parse-as-library )
// REQUIRES: executable_test
// REQUIRES: concurrency
// REQUIRES: libdispatch
// REQUIRES: concurrency_runtime
// UNSUPPORTED: back_deployment_runtime
import Dispatch
import StdlibUnittest
import _Concurrency
final class NaiveQueueExecutor: TaskExecutor {
let queue: DispatchQueue
init(_ queue: DispatchQueue) {
self.queue = queue
}
public func enqueue(_ _job: consuming ExecutorJob) {
print("\(self): enqueue")
let job = UnownedJob(_job)
queue.async {
print("\(self): run job on queue")
job.runSynchronously(on: self.asUnownedTaskExecutor())
}
}
}
nonisolated func nonisolatedFunc(expectedExecutor: NaiveQueueExecutor) async {
dispatchPrecondition(condition: .onQueue(expectedExecutor.queue))
}
@main struct Main {
static func main() async {
if #available(SwiftStdlib 5.9, *) {
let queue = DispatchQueue(label: "example-queue")
let executor = NaiveQueueExecutor(queue)
await Task(executorPreference: executor) {
await nonisolatedFunc(expectedExecutor: executor)
}.value
}
}
}
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