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Re: which cocoa objects to dealloc ?
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Re: which cocoa objects to dealloc ?


  • Subject: Re: which cocoa objects to dealloc ?
  • From: j o a r <email@hidden>
  • Date: Sat, 18 Mar 2006 11:40:57 +0100


On 18 mar 2006, at 11.25, Karim Morsy wrote:

put logs in all of my custom object''s dealloc methods and obviously none of them seems to get called when the app terminates.

This is a really frequently asked question, so it's probably not documented well enough...
Cocoa will skip over sending deallocation messages to objects when your app is about to quit. This is an optimization, as all memory will be reclaimed by the OS after the app has terminated in any case.


Check the NSApplication termination notification if there's some work that you need to perform at this time. Don't overload your memory management primitive methods for this purpose.

for example, my custom NSView... when I send release to it before the app quites nothing happens. if I send release twice the app crashes. so in short...do I have to explicitly send dealloc to ANY custom object I create, be it a view, a controller, or something else ?

Never, ever, send dealloc to anything! Follow the Cocoa memory management guidelines, and let Cocoa deal with the rest.


j o a r


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