I am in the final stage of developing an iPhone game and I am dealing with a crash that appears to be memory related.
It happens only on the device when I load a game level several times (10 to 15 times). I get some memory warnings around the 8th time and if I keep loading the same level it finally crashes with this message on the console:
Program received signal: “0”.
Data Formatters temporarily unavailable, will re-try after a 'continue'. (Unknown error loading shared library
"/Developer/usr/lib/libXcodeDebuggerSupport.dylib")
Some goolge search told me this message usually means the app has run out of memory.
I ran the app under instruments but it didn’t detect any memory leaks and the total allocation remained around 1,5Mb (both live and overall bytes) reaching 5,4Mb for a fraction of a second everytime I loaded a level. This doesn’t seem a lot since a leaky test app didn’t crash before allocating more than 30Mb on the same device (iPhone 3GS). I am new to instruments so maybe I am missing something.
I ve been struggling with this bug for days now and I would be really thankful if someone could point me in the right direction.
Check in Instruments the Activity Monitor instrument. You’ll find the correct amount of RAM you are consuming at any given time. The Allocations instrument is not really an indicator of RAM usage. It will however help in finding things that have been allocated and not released. Use heapshots in Allocations to find out where things are being leaked.
http://www.friday.com/bbum/2010/10/17/when-is-a-leak-not-a-leak-using-heapshot-analysis-to-find-undesirable-memory-growth/