Hi there, I'm stuck on some weird memory leak problem related to the AVAudioPlayer and I need help after trying everything that came to mind. Here is the short description of the problem - code appears right after. I initialize my player and start to play the sound track in an endless loop (and endless loop or one time play did not cha...
What does the Linux /proc/meminfo "Mapped" topic mean? I have seen several one-liners that tell me it is the "Total size of memory in kilobytes that is mapped by devices or libraries with mmap." But I have now spent almost twenty hours searching the 2.6.30.5 kernel source code trying to confirm this statement, and I have been unable to...
Does anyone know what the difference between mmap(2) and mmap(3) is? Man section 3 is described as "This chapter describes all library functions excluding the library functions described in chapter 2, which implement system calls." Doesn't mmap(3) perform a system call? Reading the two man pages, I see that mmap(2) seems to accept a m...
Hi, I keep getting a out of memory error in LuaJit. How do I increase the stack or heap size? Thanks ...
My main view controller (representing the Main Menu in my app) has a simple UIView with a few sub views. I am using a modal-type design pattern and switch to multiple other view controllers before finally returning to the main menu. The problem is, in my other view controllers (not the main menu one), I often load data-heavy images and t...
How much is the actual memory / performance gain in an ASP.NET MVC controller when using these two different ways of declaring the Model for a view? User user = userService.GetByID(id); return View(user); or return View(userService.GetById(id)); I'm supposing that the last one is a bit more performant as we do not initialize an obj...
this is my code it does not releases memory it reaches to 60 mb and application kills for (int i=0; i<[modelList count] ;i++) { url=@"http://192.168.0.101/images/projectimages/"; url=[url stringByAppendingString:[modelList objectAtIndex:i]]; url=[url stringByAppendingString:@".jpg"]; [[NSURLCache sharedURLCache] setMemoryCapaci...
Hi, I'm using adjacency_list< vecS, vecS, bidirectionalS ... > extensively. I have so many graphs loaded at once that memory becomes an issue. I'm doing static program analysis and store the callgraph and flowgraphs of the disassembled binary in boost graphs. Thus I can have several ten thousand functions==flowgraphs and one gigantic ca...
Hi there, I need to use a stretchable UIImage hundreds of times in my app in multiple UIImageViews. Is it okay to globally reuse the same stretchable UIImage instead of having to recreate them in memory each time I need to add it to a UIImageView? I know [UIImage imageNamed:] caches images for better performance, but this cannot be use...
I have an AJAX-based website using JavaScript on the client. Certain operations on the site cache large result sets from service calls in the browser (i.e. hundreds of megabytes). These are throw-away results. They will be viewed for a short time and then need to be cleared from memory. I've written a small test site that loads a b...
So i'm almost done creating my iphone app but it keeps crashing. Here are the crash report and the plist. Not sure which one you guys need to help me out on why it keeps crashing.... plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <p...
I'm writing a simple linked list based memory manager in the form: ...Header|Block|Header|Block... with a used and free list. If the realloc() function was asked to reduce the size of a block, is it okay to overwrite some of the trailing bytes with the header for the newly created block? The documentation I've read suggests this is 'un...
I can read unmanaged memory in C# using UnmanagedMemoryStream, but how can I do the reverse? I want to read from a managed stream directly into unmanaged memory, instead of first reading into a byte[] and then copying. I'm doing async stream reading on a large number of requests, so the added memory is significant (not to mention the a...
Note: This question was originally asked here but the bounty time expired even though an acceptable answer was not actually found. I am re-asking this question including all details provided in the original question. A python script is running a set of class functions every 60 seconds using the sched module: # sc is a sched.scheduler i...
I am a little curious about the last lines in the two examples presented below (i.e. planetName = [value ??????]) My understanding is that the 1st example with the copy is best as that takes a copy of the string object to protect against the original string object being changed elsewhere. I am also a little confused by the last line in ...
Can someone explain the difference between these two, the first one is taken from allowing xcode to automatically generate the declaration, the last one is taken from an example in "Cocoa Programming" by Aaron Hillegass. - (NSString*)planetName { return [[planetName retain] autorelease]; } . - (NSString*)planetName { return p...
I am trying to load an image in memory but might have memory issues since i have some other images loaded. These images have a "visible" field that dictates whether they are visible or not. Regardless of the visibility i keep them in memory for fast loading (when they become visible again). But since i have many of them in memory i wan...
IDE,SCSI,SSD,SATA or all of those. ...
When I write a program and tell it int c=5, it puts the value 5 into a little bit of it's memory, but how does it remember which one? The only way I could think of would be to have another bit of memory to tell it, but then it would have to remember where it kept that as well, so how does it remember where everything is? ...
I just noticed the memory usage of a simple win32 C based GUI application with single main window taking around 3 MB memory ( via Task Manager ) I used Dev-c++ and Mingw as compiler , and generated windows application via project wizard. why that so ? is there any way to reduce it ? ...