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Re: Allocation in Pools and threads
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Re: Allocation in Pools and threads


  • Subject: Re: Allocation in Pools and threads
  • From: "Louis C. Sacha" <email@hidden>
  • Date: Mon, 14 Jun 2004 22:16:17 -0700

Hello...

If you store an autoreleased object in the instance variable, then yes it will be zapped when the thread exits. In most cases you would want to make sure that all objects created within the thread are properly released before the thread exits, so the issue of when to release the object you want to return is still important.

A good way to handle this is to use performSelectorOnMainThread:withObject:waitUnitlDone: to call the setter for the instance variable with waitUntilDone:TRUE, right before releasing the thread's autorelease pool and exiting the thread. If your thread created the object or retained it, then you could autorelease it before the call back to the main thread, or release it after the call to the main thread but before the release of the autorelease pool.

Hope that helps,

Louis

...

The reason I ask is that I have a class that spawns a thread in one of it's more time consuming methods but I want the method to write it's results to an instance variable of the class when it's done doing it's thing. Won't the data the method writes to the instance variable get zapped when I release the pool?

Have you tried? It shouldn't do it.

Greg


Thanks

Ken
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References: 
 >Allocation in Pools and threads (From: Ken Tozier <email@hidden>)
 >Re: Allocation in Pools and threads (From: Greg Hulands <email@hidden>)

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