0001    //
0002    //  DispatchObjectContext.swift
0003    //  DispatchKit <https://github.com/anpol/DispatchKit>
0004    //
0005    //  Copyright (c) 2015 Andrei Polushin. All rights reserved.
0006    //
0007    
0008    import Foundation
0009    
0010    func dk_takeUnretained
DispatchObjectContext.swift:31
        return dk_takeUnretained(context)
DispatchQueueSpecific.swift:13
        return dk_takeUnretained(specific)
DispatchQueueSpecific.swift:24
        return dk_takeUnretained(specific)<T: AnyObject>(ptr: UnsafeMutablePointer<Void>) -> T? {
0011        if ptr != nil {
0012            return Unmanaged<T>.fromOpaque(COpaquePointer(ptr)).takeUnretainedValue()
0013        }
0014        return nil
0015    }
0016    
0017    func dk_passRetained
DispatchObjectContext.swift:35
        dispatch_set_context(rawValue, dk_passRetained(context))
DispatchQueueSpecific.swift:17
        dispatch_queue_set_specific(rawValue, key, dk_passRetained(specific), dk_release)<T: AnyObject>(obj: T?) -> UnsafeMutablePointer<Void> {
0018        if let obj = obj {
0019            return UnsafeMutablePointer(Unmanaged.passRetained(obj).toOpaque())
0020        }
0021        return nil
0022    }
0023    
0024    func dk_release
DispatchObjectContext.swift:36
        dispatch_set_finalizer_f(rawValue, dk_release)
DispatchQueueSpecific.swift:17
        dispatch_queue_set_specific(rawValue, key, dk_passRetained(specific), dk_release)(ptr: UnsafeMutablePointer<Void>) {
0025        Unmanaged<AnyObject>.fromOpaque(COpaquePointer(ptr)).release()
0026    }
0027    
0028    public extension DispatchObject {
0029        func getContext<T: AnyObject>() -> T? {
0030            let context = dispatch_get_context(rawValue)
0031            return dk_takeUnretained(context)
0032        }
0033    
0034        func setContext<T: AnyObject>(context: T?) {
0035            dispatch_set_context(rawValue, dk_passRetained(context))
0036            dispatch_set_finalizer_f(rawValue, dk_release)
0037        }
0038    }
0039