Average benchmark for arbitrary block of code in Swift. Used to compensate deviations of individual benchmark iterations. See blog post for more details: http://www.vadimbulavin.com/benchmarking-locking-apis/

AverageBenchmark.swift

func averageBenchmark(iterations: Int, numberOfAttempts: Int, block: (Int) -> Void) -> TimeInterval {
    var accumulatedResult: TimeInterval = 0

    for _ in 0..<numberOfAttempts {
        let result = benchmark {
            for i in 0..<iterations {
                block(i)
            }
        }
        accumulatedResult += result
    }

    return accumulatedResult / TimeInterval(numberOfAttempts)
}