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Re: NSPopAutoreleasePool
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Re: NSPopAutoreleasePool


  • Subject: Re: NSPopAutoreleasePool
  • From: Chris Hanson <email@hidden>
  • Date: Mon, 13 Sep 2004 13:20:53 -0700

On Sep 13, 2004, at 4:35 AM, Sunil wrote:
I tried a lot , but i am unable to resolve this issue. I am doing a Cocoa App which is behaving abnormally. It gives the following log and crashes . I think these are something due to releasing the objects which are there in autorelease pool. But i am unable to figure them out. Can anyone please help me in figuring it out. Please send me your suggestions.

As Allan suggested, NSZombieEnabled can help you track down multiple-release crashes. But the best defense against multiple-release crashes is to be careful to always follow the Cocoa memory management conventions:


(1) If you get an object from an +alloc, -copy..., -mutableCopy... or +new... method, you own it and are responsible for releasing it with -release or -autorelease.

(2) If you retain an object, you are responsible for releasing it with -release or -autorelease.

(3) If you get an object in any other way, you don't own it and must assume it has already been sent -autorelease. If you want to hang onto it, you need to either -retain it (see #2 above) or make a copy of it (see #1 above), depending on the semantics you require.

  -- Chris

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References: 
 >NSPopAutoreleasePool (From: Sunil <email@hidden>)

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