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09/12/2009 at 12:03PM PDT, ID: 24727080
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8.0

Thread safe NSMutableArray?

Asked by Geesu in Cocoa Programming Language, Objective-C Programming Language

Basically I have my main thread which contains an NSMutableArray, this array is constantly updated/changed etc...  on a pretty consistent basis (about every 0.5 seconds).

Declaration in main thread:
NSMutableArray *_list = [NSMutableArray array];

I'd like for my second thread to ONLY read data from this array, so I decided to return a COPY of the NSMutableArray as NSArray:
NSArray *list = [[_list copy] autorelease];

But i'm getting a crash:
Thread 4 Crashed:
0   com.apple.CoreFoundation            0x9423bb7e __CFTypeCollectionRetain + 174
1   com.apple.CoreFoundation            0x9428b330 CFArrayCreateCopy + 304
2   com.apple.Foundation                0x93858ebd -[NSCFArray copyWithZone:] + 49
3   com.apple.CoreFoundation            0x9429aa5a -[NSObject(NSObject) copy] + 42

Any ideas?
 
Keywords: Thread safe NSMutableArray?
 
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[+][-]09/13/09 11:05 PM, ID: 25323123

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[+][-]09/14/09 05:53 AM, ID: 25324856

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[+][-]09/14/09 06:48 AM, ID: 25325340

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About this solution

Zones: Cocoa Programming Language, Objective-C Programming Language
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Solution Provided By: fridom
Participating Experts: 1
Solution Grade: A
 
 
 
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