Files
container/Sources/ContainerizationExtras/Timeout.swift
T
2025-06-12 09:57:35 -04:00

47 lines
1.7 KiB
Swift

//===----------------------------------------------------------------------===//
// Copyright © 2025 Apple Inc. and the Containerization project authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import Foundation
/// `Timeout` contains helpers to run an operation and error out if
/// the operation does not finish within a provided time.
public struct Timeout {
/// Performs the passed in `operation` and throws a `CancellationError` if the operation
/// doesn't finish in the provided `seconds` amount.
public static func run<T: Sendable>(
seconds: UInt32,
operation: @escaping @Sendable () async -> T
) async throws -> T {
try await withThrowingTaskGroup(of: T.self) { group in
group.addTask {
await operation()
}
group.addTask {
try await Task.sleep(for: .seconds(seconds))
throw CancellationError()
}
guard let result = try await group.next() else {
fatalError()
}
group.cancelAll()
return result
}
}
}