Thanks, Greg! I know what you mean and it's very likely what's happening since there can be 8 downloads happening simultaneously in different threads. I will lock it down so that only one object can modify it.
Thanks again! -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com On Sep 20, 2012, at 18:08, Greg Parker <gpar...@apple.com> wrote: > On Sep 20, 2012, at 1:31 PM, Laurent Daudelin <laur...@nemesys-soft.com> > wrote: >> >> • 0 erodr 0x0011cfe6 testflight_backtrace + 238 >> • 1 erodr 0x0011dcd0 TFSignalHandler + 264 >> • 2 libsystem_c.dylib 0x3901de92 _sigtramp + 42 >> • 3 libsystem_c.dylib 0x39014122 pthread_kill + 58 >> • 4 libsystem_c.dylib 0x39050972 abort + 94 >> • 5 libsystem_c.dylib 0x3901af18 <redacted> + 0 >> • 6 libsystem_c.dylib 0x3901b234 <redacted> + 84 >> • 7 libsystem_c.dylib 0x38fe92de free + 170 >> • 8 CoreFoundation 0x35262cae <redacted> + 206 >> • 9 CoreFoundation 0x351c5560 <redacted> + 732 >> • 10 erodr 0x000d7b06 -[ERAppDelegate >> startNetworkIndicatorForInstance:] (ERAppDelegate.m:747) >> • 11 erodr 0x000f531c __68-[StreamerImageTextCell >> downloadPictureFromURL:forKey:inDictionary:]_block_invoke_0 >> (StreamerImageTextCell.m:81) >> • 12 Foundation 0x32ca5538 <redacted> + 200 >> • 13 Foundation 0x32c9cdb8 <redacted> + 840 >> • 14 Foundation 0x32d153da <redacted> + 102 >> • 15 libdispatch.dylib 0x33f5411e <redacted> + 10 >> • 16 libdispatch.dylib 0x33f58960 <redacted> + 252 >> • 17 libdispatch.dylib 0x33f58ac0 <redacted> + 84 >> • 18 libsystem_c.dylib 0x38feba10 <redacted> + 360 >> • 19 libsystem_c.dylib 0x38feb8a3 start_wqthread + 7 >> >> Line 747 of ERAppDelegate.m is: >> >> [self.networkIndicatorClients setObject:numberOfInvocations >> forKey:addressAsString]; >> >> I have no idea why this crash is happening. I use the same technique in >> another app and never had a crash in the startNetworkIndicatorForInstance:. > > > What is your thread-safety story here? I don't see anything obvious to > protect the networkIndicatorClients container from concurrent modification. > Reading the container from one thread while writing from another, or writing > from two threads at once, could both cause the error you see. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
