@propertyWrapper
struct Atomic<Value> {

	private var value: Value
	private let lock = NSLock()

	init(wrappedValue value: Value) {
		self.value = value
	}

	var wrappedValue: Value {
		get { return load() }
		set { store(newValue: newValue) }
	}

	func load() -> Value {
		lock.lock()
		defer { lock.unlock() }
		return value
	}

	mutating func store(newValue: Value) {
		lock.lock()
		defer { lock.unlock() }
		value = newValue
	}
}