On May 6, 2016, at 14:58 , Alex Zavatone <z...@mac.com> wrote:
>
> Can we come up with a suitable set of tests to replicate and verify this
This was the code from the forum thread that I played around with:
> class ViewController: UIViewController {
> let backgroundQueue = dispatch_queue_create("backgroundQueue",
> DISPATCH_QUEUE_SERIAL);
> var tickTimer: NSTimer?
>
> var cancelTimer: NSTimer?
>
> override func viewDidLoad() {
> super.viewDidLoad()
>
> tickTimer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self,
> selector: "timerFired:", userInfo: nil, repeats: true)
>
> cancelTimer = NSTimer.scheduledTimerWithTimeInterval(30, target:
> self, selector: "cancelTimerFired:", userInfo: nil, repeats: false)
> }
>
> func timerFired(timer: NSTimer) {
> for _ in 0..<100 {
>
> dispatch_async(backgroundQueue, { () -> Void in
> // TODO: some calculation. However, it does not matter
> })
> }
> }
>
> func cancelTimerFired(timer: NSTimer) {
> tickTimer?.invalidate()
> }
> }
But it only be a problem with specific OS X or iOS versions. I haven’t checked
lately.
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