75 lines
2.0 KiB
Swift
75 lines
2.0 KiB
Swift
//
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// TuskerTests.swift
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// TuskerTests
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//
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// Created by Shadowfacts on 8/15/18.
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// Copyright © 2018 Shadowfacts. All rights reserved.
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//
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import XCTest
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@testable import Tusker
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class TuskerTests: XCTestCase {
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override func setUp() {
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// Put setup code here. This method is called before the invocation of each test method in the class.
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}
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override func tearDown() {
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// Put teardown code here. This method is called after the invocation of each test method in the class.
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}
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func testExample() {
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// This is an example of a functional test case.
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// Use XCTAssert and related functions to verify your tests produce the correct results.
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}
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func testPerformanceExample() {
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// This is an example of a performance test case.
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self.measure {
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// Put the code you want to measure the time of here.
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}
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}
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func testFuckingLock() {
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let lock = MutexLock<[Int: Bool]>(initialState: [:])
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for i in 0..<100 {
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Thread.detachNewThread {
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for j in 0..<50_000 {
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lock.withLock {
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$0[i * 50_000 + j] = true
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}
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}
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}
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}
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while true {
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if lock.withLock({ $0.count }) == 5_000_000 {
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break
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}
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}
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lock.withLock({ _ in
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print("WHAT THE FUUUUUUUUUUUUCK")
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})
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}
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}
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fileprivate class MutexLock<State> {
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private var state: State
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private var lock = NSLock()
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init(initialState: State) {
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self.state = initialState
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}
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func withLock<R>(_ body: @Sendable (inout State) throws -> R) rethrows -> R where R : Sendable {
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if !lock.lock(before: Date(timeIntervalSinceNow: 1)) {
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// if we can't acquire the lock after 1 second, something has gone catastrophically wrong
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fatalError()
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}
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defer { lock.unlock() }
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return try body(&state)
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}
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}
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