 extension Int : SDAtomicProtocol {
     
     /// Atomic fetch the current value with barrier.
-    public mutating func fetch() -> Int {
-        return _AtomicLoadLongBarrier(&self)
+    public mutating func fetchSelf() -> (self: Int, value: Int) {
+        let val = _AtomicLoadLongBarrier(&self)
+        return (val, val)
     }
     
     /// Atomic sets the value with barrier.

extension Int16 : SDAtomicProtocol {
    
    /// Atomic fetch the current value with barrier.
    public mutating func fetch() -> Int16 {
        return _AtomicLoad16Barrier(&self)
    }
    
    /// Atomic sets the value with barrier.

extension UInt : SDAtomicProtocol {
    
    /// Atomic fetch the current value with barrier.
    public mutating func fetchSelf() -> (self: UInt, value: UInt) {
        let val = _AtomicLoadULongBarrier(&self)
        return (val, val)
    }
    
    /// Atomic sets the value with barrier.
