Hi,
I don't see any point in doing this on our own as the iPhone OS anyway gives
you memory warning when we are consuming too much of it, and this is the
right occasion to cleanup anything that is not needed ( in
applicationDidReceiveMemoryWarning: message).
Perhaps you are trying to implement some cache such as image or audio
specific to your app, in that case, you can in advance set the limit say 5
or 10 MB and if the cache exceeds, delete the least recently used item? Or
when you receive memory warning, perhaps delete all items in the cache..
-Shripada
On 06/05/10 7:13 AM, "cocoa-dev-requ...@lists.apple.com"
<cocoa-dev-requ...@lists.apple.com> wrote:
>
> Message: 10
> Date: Wed, 5 May 2010 16:27:29 -0700
> From: Philip Mobley <p...@dreystone.com>
> Subject: iPhone resource cache - memory question
> To: Cocoa-dev@lists.apple.com
> Message-ID: <eb4e4887-2fa9-41fa-8d69-1ab675a4a...@dreystone.com>
> Content-Type: text/plain; charset=us-ascii
>
> I am designing a slightly smarter resource cache that purges less frequently
> used resources instead of a purge all when getting an UIApplication delegate
> "applicationDidReceiveMemoryWarning:" message. I know the target (currently)
> is 20 MBs (although that could change with future hardware). The problem I am
> running into is finding out if I have purged enough.
>
> Is there a method to get the current app memory allocation for the iPhone?
> Also is there a constant that I can compare it to (memory value to issue
> warning)?
>
> This would allow me to do a loop something like:
>
> while (appCurrentMemory > issueMemoryWarningAtValue) {
> [self purgeOldestAccessedObject];
> }
>
>
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