/// Wraps a value with a DispatchSemaphore(value: 1) to prevent overlapping access.
@propertyWrapper public struct Semaphored<T> {

	private var value: T
	private var semaphore = DispatchSemaphore(value: 1)

	public var wrappedValue: T {
		get {
			defer { semaphore.signal() }
			semaphore.wait()
			return value
		}
		set {
			semaphore.wait()
			value = newValue
			semaphore.signal()
		}
	}

	public init(wrappedValue: T) {
		self.value = wrappedValue
	}

}