39 lines
863 B
Swift
39 lines
863 B
Swift
//
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// UnfairLock.swift
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// SwiftSoup
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//
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// Created by xukun on 2022/3/31.
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// Copyright © 2022 Nabil Chatbi. All rights reserved.
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//
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import Foundation
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#if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
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@available(iOS 10.0, macOS 10.12, watchOS 3.0, tvOS 10.0, *)
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final class UnfairLock: NSLocking {
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private let unfairLock: UnsafeMutablePointer<os_unfair_lock> = {
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let pointer = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
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pointer.initialize(to: os_unfair_lock())
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return pointer
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}()
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deinit {
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unfairLock.deinitialize(count: 1)
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unfairLock.deallocate()
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}
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func lock() {
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os_unfair_lock_lock(unfairLock)
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}
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func tryLock() -> Bool {
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return os_unfair_lock_trylock(unfairLock)
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}
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func unlock() {
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os_unfair_lock_unlock(unfairLock)
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}
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}
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#endif
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