32 lines
562 B
Swift
32 lines
562 B
Swift
//
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// GCDLock.swift
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// TrueTime
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//
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// Created by Michael Sanders on 10/27/16.
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// Copyright © 2016 Instacart. All rights reserved.
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//
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import Foundation
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final class GCDLock<Value> {
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var value: Value
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let queue = DispatchQueue(label: "")
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init(value: Value) {
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self.value = value
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}
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func read() -> Value {
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var value: Value?
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queue.sync {
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value = self.value
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}
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return value!
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}
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func write(_ newValue: Value) {
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queue.async {
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self.value = newValue
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}
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}
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}
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