2014/10/15 下午 10:03:34

iphone Programming Glossary: allocated

Checking memory allocation in Instruments

http://stackoverflow.com/questions/1061235/checking-memory-allocation-in-instruments

my app of leaks using the leaks tool but I still notice that the objectalloc tool jumps up in the number of objects allocated and footprint when I switch views. I'm especially seeing high numbers of GeneralBlock 16 with mostly Foundation responsible..

iPhone development: pointer being freed was not allocated

http://stackoverflow.com/questions/1424210/iphone-development-pointer-being-freed-was-not-allocated

development pointer being freed was not allocated i got this message from the debugger Pixture 1257 0xa0610500 malloc error for object 0x21a8000 pointer being freed was.. this message from the debugger Pixture 1257 0xa0610500 malloc error for object 0x21a8000 pointer being freed was not allocated set a breakpoint in malloc_error_break to debug so i did a bit of tracing and got gdb shell malloc_history 1257 0x21a8000.. share improve this question I've had the same problem with a lot of the same symptoms pointer being freed was not allocated error upgraded to Xcode 3.2 error happening in code for images If I change the build target to 3.1 the errors in the simulator..

How to get the RGB values for a pixel on an image on the iphone

http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone

our context if context free pixelData NSLog @ Context not created Draw the image to the bitmap context. The memory allocated for the context for rendering will then contain the raw image pixelData in the specified color space. CGRect rect 0 0 self.size.width.. unitialized memory as long as the data self setPixelBitData malloc CFDataGetLength bitmapData Copy image data into allocated buffer CFDataGetBytes bitmapData CFRangeMake 0 CFDataGetLength bitmapData pixelByteData Cast a pointer to the first element..

Instruments ObjectAlloc: Explanation of Live Bytes & Overall Bytes

http://stackoverflow.com/questions/2154219/instruments-objectalloc-explanation-of-live-bytes-overall-bytes

is using at the time you select in the timeline. That will include leaked memory since leaked memory is never deallocated. #Living is how many allocations of a certain size object type happened and are still allocated . This is very useful when.. memory is never deallocated. #Living is how many allocations of a certain size object type happened and are still allocated . This is very useful when looking for leaks. For example if you repetitively perform an action like coming in an out of..

NSMutableArray addObject: -[__NSArrayI addObject:]: unrecognized selector sent to instance

http://stackoverflow.com/questions/3220120/nsmutablearray-addobject-nsarrayi-addobject-unrecognized-selector-sent-t

initialize my NSMutableArray 100 ways from Sunday and NOTHING is working for me. I tried setting it equal to a newly allocated and initialized NSMutableArray just allocating initializing the variable by itself every combination I could think of and..

EXC_BAD_ACCESS signal received

http://stackoverflow.com/questions/327082/exc-bad-access-signal-received

if you need to keep it around beyond the immediate function that you retain it. If you don't the memory may remain allocated while you are using it or be released but coincidentally still valid during your emulator testing but is more likely to..

Using the apple FFT and accelerate Framework

http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework

each complex # is 2 floats A 1 stride 1 in A.realP .compP nOver2 n 2 elts You would really need to look at how A is allocated to get this maybe look up COMPLEX_SPLIT in the documentation. A.realp float malloc nOver2 sizeof float A.imagp float malloc..

Behaviour for significant change location API when terminated/suspended?

http://stackoverflow.com/questions/3421242/behaviour-for-significant-change-location-api-when-terminated-suspended

do minimal work and avoid any tasks such as querying the network that might prevent it from returning before the allocated time expires. If it does not your application may be terminated. This suggests you are woken up with location data if your..

Proper way to exit iPhone application?

http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application

programming an iPhone app and I need to force it to exit due to certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective c cocoa touch ipad share improve..

How many times do I release an allocated or retained object?

http://stackoverflow.com/questions/3730804/how-many-times-do-i-release-an-allocated-or-retained-object

many times do I release an allocated or retained object I am making an iPhone game. I want to release all objects that have been allocated or retained. In the.. do I release an allocated or retained object I am making an iPhone game. I want to release all objects that have been allocated or retained. In the dealloc function I am releasing all such objects but then I realized that sometimes I end up releasing.. I am releasing all such objects but then I realized that sometimes I end up releasing objects when they have not been allocated yet. So I figured I need to check if its retainCount is greater than zero or not before I release it. My question is Do..

Can somebody explain the process of a UIViewController birth (which method follows which)?

http://stackoverflow.com/questions/5107604/can-somebody-explain-the-process-of-a-uiviewcontroller-birth-which-method-follo

. 1. The viewController object At its most basic a viewController is a generic controller object. When it is first allocated an initialized it has no view object associated with it. The view is only instantiated when and if it is required. So without..

Memory limit and iOS memory allocation in iphone SDK?

http://stackoverflow.com/questions/6044147/memory-limit-and-ios-memory-allocation-in-iphone-sdk

iphone ios4 memory management share improve this question Blocks from separate memory allocations are not allocated contiguously separate calls to alloc malloc new etc. . Otherwise they are allocated contiguously from the same call to malloc.. memory allocations are not allocated contiguously separate calls to alloc malloc new etc. . Otherwise they are allocated contiguously from the same call to malloc ex. new float 30 . According to Apple your app risks being shut down for memory..

Programmatically retrieve memory usage on iPhone

http://stackoverflow.com/questions/787160/programmatically-retrieve-memory-usage-on-iphone

a field in the structure info.virtual_size which will give you the number of bytes available virtual memory or memory allocated to your application as potential virtual memory in any event . The code that pgb links to will give you the amount of memory..

Best approach for XML parsing on the iPhone

http://stackoverflow.com/questions/842292/best-approach-for-xml-parsing-on-the-iphone

long comments clocking in at about 600KB of raw data. Quite aside from the size of the resultant XML tree the memory allocated internally while creating that tree can be enormous. I wound up creating a variant of NSXMLParser which pulls data in from..

Objective c, Memory management of instance members

http://stackoverflow.com/questions/8576593/objective-c-memory-management-of-instance-members

the retaincount right after this init and it is 2 if i release it in the end of the function it will fall for not allocated object. What am I doing wrong how should I initial this type of variable Thanks iphone objective c ios memory management..