Re: Memory management about async object
Re: Memory management about async object
- Subject: Re: Memory management about async object
- From: ico <email@hidden>
- Date: Tue, 8 Feb 2011 02:06:50 +0800
Hi All,
What if the handler retain itself, and then will perform some
NSURLConnection tasks, that will async download some data, and receive some
messages as a delegate by implementing
connection:didReceiveResponse
connection:didReceiveData
connection:didFailWithError
connection:didFinishLoading
when the application call the cancel method of NSURLConnection, no chance to
autorelease itself because those delegate methods will not have a chance to
be called as the official document stated:
Cancels an asynchronous load of a request.
- (void)cancel
*Discussion*
Once this method is called, the receiver’s delegate will no longer receive
any messages for this NSURLConnection.
Will this cause memory leak?
On Sun, Jan 2, 2011 at 12:50 AM, Steve Sisak <email@hidden> wrote:
> There's some good information on this in TechNote 2009
>
> <http://developer.apple.com/library/ios/#technotes/tn2009/tn2109.html>
>
> Also, here is some sample code you might find very helpful:
>
> <http://developer.apple.com/library/mac/#samplecode/LinkedImageFetcher/>
>
> as it does almost what you're describing.
>
> HTH,
>
> -Steve
>
>
>
>
> At 5:28 PM +0800 12/28/10, ico wrote:
>
>> Hi Stephen,
>>
>> Thanks for your reply, so there is no any perfect solution for this kind
>> of
>> problem?
>> And can you give me a specific example to demonstrate why why it is not
>> safe
>> to
>> release these async objects inside a callback method and why not safe to
>> autorelease it?
>> Thanks.
>>
>
--
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