Memory Leak, No Way!
Today I encountered the following debugger output when I ran my iPad application code：
2011-07-18 23:09:50.205 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b0fc60 of class __NSArrayM autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.207 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b10960 of class NSCFString autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.209 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b11bd0 of class NSCFString autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.211 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b11f60 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.211 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b12170 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.212 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b12380 of class __NSArrayI autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.212 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b124d0 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.213 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b125e0 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.214 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b12cf0 of class UIDeviceRGBColor autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.214 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b13010 of class __NSArrayM autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.215 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b0f960 of class __NSArrayM autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.216 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b12f80 of class NSCFString autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.216 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b13130 of class NSCFString autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.217 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b13030 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.217 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b132d0 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.218 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b131b0 of class __NSArrayI autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.219 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b131c0 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.219 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b134f0 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.220 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b133d0 of class NSCFString autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.221 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b13680 of class NSPathStore2 autoreleased with no pool in place - just leaking 2011-07-18 23:09:50.222 Whiteboard[55591:207] *** __NSAutoreleaseNoPool(): Object 0x4b13640 of class NSConcreteData autoreleased with no pool in place - just leaking
This is quite confusing, because for each background thread, I created its own NSAutoreleasePool, and of cource the main thread's NSAutoreleasePool is just out there in main.m, so what's the problem ? I use Instruments's leak detecting tool, it shows when the application bootstrap, it calls my singleton class ActionManager's load method which I used to load the data as a class helper method ([ActionManager load]). I suddenly realize that the problem is here !
Since each NSObject defines a load method as the cocoa documentation says: "Invoked whenever a class or category is added to the Objective-C runtime; implement this method to perform class-specific behavior upon loading". When the app runs, it call every needed class' load method. The ActionManager's load method is mistakenly override by me, that's why the debugger output these messages (Hmm, it even crashes my iPad sometimes).
Jul 22, 2011 07:41:38 PM
哥你英语太强大了，建议你去WordPress.com上做一个英语blog。。
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All things goes over my head because I didn't understand single thing due to I am very beginner in development site and also enrolled in CIPD courses and looking for place where I can buy cipd assignments I know all these codes and things that discuss above is hard to understand for beginners like me.
Dec 06, 2019 06:31:33 PM
It seems like the main file is missing and not working properly. It can only be done through paid tool. Although, if you keep doing this it will fix the problem but it will occur again and crashes your iPad. Anyway, if you have any important college work to do you can go to online assignment help UK and assigned your task to any of the available writer. Easy!
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