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Re: NSUserDefaults and thread safety
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Re: NSUserDefaults and thread safety


  • Subject: Re: NSUserDefaults and thread safety
  • From: Chris Parker <email@hidden>
  • Date: Wed, 10 Aug 2005 18:45:42 -0700


On Aug 10, 2005, at 5:46 PM, Jonathan del Strother wrote:

The thread safety page (http://tinyurl.com/7m47a) lists NSUserDefaults as being thread safe. The NSUserDefaults page, on the other hand, says it isn't. Which is it?

Either way, is it safe for me to read user defaults in one thread, while another might be writing? Or do I risk getting garbage back from the reading thread?

Huh. I'm not sure why that warning's there. It should be thread-safe. If you're reading from one thread & writing from another, one should be blocked on the other. You shouldn't get garbage back.


That having been said: We fixed some thread-safety issues in Tiger - I know there was a crash window in releases earlier than Tiger.

.chris

--
Chris Parker
Cocoa Frameworks
Apple Computer, Inc.

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References: 
 >NSUserDefaults and thread safety (From: Jonathan del Strother <email@hidden>)

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