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Platform.Linux.swift
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Platform.Linux.swift
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//
// Platform.Linux.swift
// Platform
//
// Created by Krunoslav Zaher on 12/29/15.
// Copyright © 2015 Krunoslav Zaher. All rights reserved.
//
#if os(Linux)
import XCTest
import Glibc
import SwiftShims
import class Foundation.Thread
final class AtomicInt {
typealias IntegerLiteralType = Int
fileprivate var value: Int32 = 0
fileprivate var _lock = RecursiveLock()
func lock() {
_lock.lock()
}
func unlock() {
_lock.unlock()
}
func valueSnapshot() -> Int32 {
return value
}
}
extension AtomicInt: ExpressibleByIntegerLiteral {
convenience init(integerLiteral value: Int) {
self.init()
self.value = Int32(value)
}
}
func >(lhs: AtomicInt, rhs: Int32) -> Bool {
return lhs.value > rhs
}
func ==(lhs: AtomicInt, rhs: Int32) -> Bool {
return lhs.value == rhs
}
func AtomicFlagSet(_ mask: UInt32, _ atomic: inout AtomicInt) -> Bool {
atomic.lock(); defer { atomic.unlock() }
return (atomic.value & Int32(mask)) != 0
}
func AtomicOr(_ mask: UInt32, _ atomic: inout AtomicInt) -> Int32 {
atomic.lock(); defer { atomic.unlock() }
let value = atomic.value
atomic.value |= Int32(mask)
return value
}
func AtomicIncrement(_ atomic: inout AtomicInt) -> Int32 {
atomic.lock(); defer { atomic.unlock() }
atomic.value += 1
return atomic.value
}
func AtomicDecrement(_ atomic: inout AtomicInt) -> Int32 {
atomic.lock(); defer { atomic.unlock() }
atomic.value -= 1
return atomic.value
}
func AtomicCompareAndSwap(_ l: Int32, _ r: Int32, _ atomic: inout AtomicInt) -> Bool {
atomic.lock(); defer { atomic.unlock() }
if atomic.value == l {
atomic.value = r
return true
}
return false
}
extension Thread {
static func setThreadLocalStorageValue<T: AnyObject>(_ value: T?, forKey key: String) {
let currentThread = Thread.current
var threadDictionary = currentThread.threadDictionary
if let newValue = value {
threadDictionary[key] = newValue
}
else {
threadDictionary[key] = nil
}
currentThread.threadDictionary = threadDictionary
}
static func getThreadLocalStorageValueForKey<T: AnyObject>(_ key: String) -> T? {
let currentThread = Thread.current
let threadDictionary = currentThread.threadDictionary
return threadDictionary[key] as? T
}
}
#endif