Re: Help with threads and queues
Re: Help with threads and queues
- Subject: Re: Help with threads and queues
- From: Paul Franz <email@hidden>
- Date: Thu, 29 Apr 2010 18:16:14 -0400
Thanks. That looks like what I am looking for.
Note: I didn't know that about NSOperationQueue.
Paul Franz
On Thu, Apr 29, 2010 at 6:00 PM, Dave DeLong <email@hidden> wrote:
> If you're worried about cross-platform compatibility, then use NSOperationQueue and NSOperations. The fundamental idea is identical (dispatch_queue = NSOperationQueue, dispatch_block = NSOperation), and on the platforms that have it, they've been re-written to use Grand Central Dispatch.
>
> The only major difference is that you'll probably be creating NSInvocationOperations, which have to invoke a method on a target object, instead of being given a Block.
>
> To answer your other questions:
>
> 1. You can suspend an NSOperationQueue using its "setSuspended:" method.
> 2. You can ask an NSOperationQueue for an array of its queued operations (the "operations" method)
> 3. Yes, it's NSOperationQueue. :)
> 4. NSOperationQueue sure does.
>
> Cheers,
>
> Dave
>
> On Apr 29, 2010, at 3:41 PM, Paul Franz wrote:
>
>> Do you know if it is available on the iPad? I think it is because
>> according the Mac Rumors website says so. This is a back end code for
>> a online board game and I am trying to port it over to the iPad. I
>> figured the back end is the best place to start (i.e. avoid UI at the
>> moment which will be a total re-write).
>>
>> Now if we assume that it is. The code goes from having a thread that
>> pulls the data of the queue and pushing over the Internet. To a
>> dispatch queue that calls a function that sends the data.
>>
>> Questions:
>>
>> 1) If the connection fails, can I suspend the processing of items on
>> the queue from within the block?
>> 2) Is there anyway to peek at the queue and find out how many
>> "tasks" are queued up?
>> 3) Is there a Cocoa wrapper for the dispatch code or will I need to
>> create my own?
>> 4) Do the dispatch queues work with Garbage Collection compiled code?
>>
>> Paul Franz
>
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