I am trying to run the memory leak program in conjunction with my iphone device. The program says that there are leaks however it doesn't give me details. GeneralBlock-32 No stack trace available. How can I set up the leak program so it actually works with my iphone to give detailed information like it does in the simulator. ...
Hi, Here is the code I have: Phone SDK undestanding cocoa object live cycle: - (void) DismissWelcomeMessage: (UIAlertView *) view { [view dismissWithClickedButtonIndex:0 animated:YES]; } - (void) ShowWelcomeMessage { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Blah" message:@"Blah Blah" delegate:self cancelButt...
Is there a known (documented) set of .NET types that allocate memory in the unmanaged portion of the process' memory? For example, Microsoft documents that the WPF infrastructure allocated unmanaged memory for its retained rendering model in order to optimize performance. Are there other such portions of the .NET framework that utilize ...
I'm a objective c newbie, and i'm having a bit of problems with memory management, I've read the apple's memory management policies, however i need a bit of clarification here, this is pretty simple i guess, but i would like to ask you if I'm right: Given this property: @interface Test : NSObject { NSArray *property1; } @property (no...
Even when I just use the Window-based application template, which does literally nothing, instruments (activity monitor) says my application's process is using 8.14MB of Real Memory! Even with this method: void report_memory(void) { struct task_basic_info info; mach_msg_type_number_t size = sizeof(info); kern_return_t kerr =...
Since RAM seems to be the new disk, and since that statement also means that access to memory is now considered slow similarly to how disk access has always been, I do want to maximize locality of reference in memory for high performance applications. For example, in a sorted index, I want adjacent values to be close (unlike say, in a ha...
I know that Javascript has a garbage collector. Therefor, using delete remove only a reference to the object, and when there is no more reference to this object, it is deleted by the GC. Javascript is tricky, with the closures, the fuzzy name space and the prototype inheritance, it's not always obvious to know when to now or why. I am ...
As I know in win32 every program receives say 4GB of virtual memory. Memory manager is responsible for offloading chunks of memory from physical memory to disk. Does it imply that malloc or any other memory allocation API will throw OUT_OF_MEMORY exception only when virtual limit is hit? I mean is it possible for malloc to fail even i...
I am working with large matrixes, so I am using NumPy's memmap. However, I am getting an error as apparently the file descriptors used by memmap are not being closed. import numpy import tempfile counter = 0 while True: temp_fd, temporary_filename = tempfile.mkstemp(suffix='.memmap') map = numpy.memmap(temporary_filename, dtype...
Hi For an investigation i need to know where hard-coded values are stored. Question : A function having hard-coded values inside it , and this function is called by many threads at same time , is there any chance that that hard-coded value will be corrupted. For example : myFunc is called by many thread at same time . c...
The app in question has a MainView->ModalView pair. The ModalView is shown via UIModalTransitionStyleFlipHorizontal. In case of didReceiveMemoryWarning, MainView is dumped (since it is not visible) and the app stays "alive" but when you flip back there is a (very) short period of time when the screen is blank (since the modal dialog is r...
Hi, I googled for the memory issue associated with UIImage and came across many threads talking about the problem but no real help or solution. I know when we use -imageNamed: the object is being cached so it's better to use initWithData:. When we use drawRect: and UIGraphicsGetImageFromCurrentImageContext(), does the image goes to cac...
I have a DataGridView being regularly populated via data-bound objects, and the number of rows can potentially become large, say many thousands during a 'logging cycle'. When a new 'logging cycle' begins, the grid is cleared because the underlying datasource is cleared and the process begins again. This is all fine, but because the pre...
I am checking Day objects in my schedule Dictionary and want to know what to do about the Day pointer when I'm done. Build and Analyze doesn't complain about it, but it just sits there taunting me. I feel like it's just sitting there when the function finishes and maybe even a new one gets created each time through the loop. Also, when r...
Consider that I have a main Thread which executes a new Runnable in a new Thread. Now, while the new Thread is executing, the Java VM runs out of memory and throws an OutOfMemoryError. What happens? Does the target thread stop? Will the main thread continue? When the new Thread crashes, will the VM reclaim the memory from it and let exe...
I am writing an app in WPF (C#) that plots certain types of fractals. The data sets are 3d points and need to represented as single pixels. The user can click and drag to rotate the plots The amount of points varies but can be quite large (five million plots or more). Currently I am drawing onto a System.Drawing.Bitmap using a Graphi...
I'm working with the EXIF library at http://code.google.com/p/iphone-exif/ and I have come across a real head scratcher of a bug. When I implement the library in a debug build everything works beautifully, but when I compile for ad hoc beta testing the app crashes hard. I'm getting the following error: Exception Type: EXC_BAD_ACCES...
Certain operations in my app are using more memory than I think they should, and I would like to log the current memory usage to help identify which they are. Is there a system call that will return the amount of memory currently in use? ...
Possible Duplicate: When is it best to use a Stack instead of a Heap and vice versa? I've read a few of the other questions regarding the heap vs stack, but they seem to focus more on what the heap/stack do rather than why you would use them. It seems to me that stack allocation would almost always be preferred since it is quic...
Is there a reason, other than as may be required by object scope across different methods of the object, to use an object like this: @interface ... ViewMgmtAppDelegate : NSObject <UIApplicationDelegate> { Obj *obj1; ... } @end @implementation - (void)applicationDidFinishLaunching:(UIApplication *)application { obj1 = [Obj alloc]; [wind...