Re: async NSOperation and NSOperationQueue
Re: async NSOperation and NSOperationQueue
- Subject: Re: async NSOperation and NSOperationQueue
- From: "Michael Ash" <email@hidden>
- Date: Fri, 19 Sep 2008 18:27:33 -0400
On Fri, Sep 19, 2008 at 2:41 PM, John Love <email@hidden> wrote:
> Michael Ash wrote:
>
>>>>>>
> Has it occurred to you that waiting for the operation to finish is
> rather at odds with the idea of trying to run it asynchronously to
> keep your program responsive?
>>>>>>
>
> Absolutely, but if the Thread is running in the background, it really
> shouldn't matter to the main Thread of the app. While calculations of a
> document are buzzing away in the background, I could be doing other things,
> e.g., opening other docs to get their calculations going. But, I cannot get
> back control until after the first document's calculations are done.
I'm confused. I thought that the call to [theQueue
waitUntilAllOperationsAreFinished] was being made on the main thread.
If you're already spawning a second thread for those calls, why bother
with the NSOperationQueue at all?
Mike
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