I'm having a hard time managing my memory in flash lite. are there any pointers i should care about ? or best practices? ive been reading every 60 seconds the garbage collector runs. i'm deleting my objects/movieclips like mc = null; delete mc; and making sure every listeners is deleted on it. still nothing seems to happen.. ...
Hi, I'm getting the following exception when I run my application in Release mode from Visual C++. Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at _cexit() at .LanguageSupport._UninitializeDefaultDomain(Vo...
Is it possible to allocate an arbitrary memory block using the "new" operator? In C I can do it like "void * p = malloc(7);" - this will allocate 7 bytes if memory alignment is set to 1 byte. How to make the same in C++ with the new operator? ...
How to find memory used by an object in PHP? (c's sizeof). The object I want to find out about is a dictionary with strings and ints in it so it makes it hard to calculate it manually. Also string in php can be of varied length depending on encoding (utf8 etc) correct? ...
I'm having trouble with memory in a j2me application. (see another question) I discovered that one class has a loop that doesn't stop until the application is closed. This loop is consuming all the memory available. I didn't make this class so I don't know why things was done this way. So any suggestions are welcome. Here is a simplif...
I have been reading up to try to make sense of memory leaks in browsers, esp. IE. I understand that the leaks are caused by a mismatch in garbage collection algorithms between the Javascript engine and the DOM object tree, and will persist past. What I don't understand is why (according to some statements in the articles I'm reading) the...
Recently, I was challenged in a recent interview with a string manipulation problem and asked to optimize for performance. I had to use an iterator to move back and forth between TCHAR characters (with UNICODE support - 2bytes each). Not really thinking of the array length, I made a curial mistake with not using size_t but an int to it...
Is there a way to evaluate the minimum requirements of a software? I mean, how can I discover, for example, the minimum amount of RAM that my application will need? Thanks! ...
How do I monitor the peak memory consumed by a process in Linux? This is not a program I can internally modify to measure peak memory usage. I do not really want detailed measurements, nor do I want them to slow down my program excessively.. so valgrind or anything heavyweight is not what I am looking for... And like other posts earlie...
From a brief look using Reflector, it looks like String.Substring() allocates memory for each substring. Am I correct that this is the case? I thought that wouldn't be necessary since strings are immutable. My underlying goal was to create a IEnumerable<string> Split(this String, Char) extension method that allocates no additional me...
Hi, I wrote an application which allows people to contribute plugins to extend the functionality. Such plugins are deployed as DLL files, which the framework picks up during runtime. Each plugin features a factory function which is called multiple times during the lifetime of the application to create objects. So far, in order to handle...
As I understand it there's a 2 GB limit on single instances in .NET. I haven't paid a lot of attention to that since I have mainly worked on 32 bit OS so far. On 32 but it is more or less an artificial limitation anyway. However, I was quite surprised to learn that this limitation also applies on 64 bit .NET. Since collections such as L...
I have the following code which reads in the follow file, append a \r\n to the end of each line and puts the result in a string buffer: public InputStream getInputStream() throws Exception { StringBuffer holder = new StringBuffer(); try{ FileInputStream reader = new FileInputStream(inputPath); BufferedReader br = new Buffe...
I apologize if the answer to this question is trivial. But I still cannot figure out this by myself. How does the garbage collector in .NET identify what objects on the heap are garbage and what objects are not? Lets say a .NET application is running and at a certain point of time garbage collection occurs(lets leave out the generatio...
When using malloc to allocate memory, is it generally quicker to do multiple mallocs of smaller chunks of data or fewer mallocs of larger chunks of data? For example, say you are working with an image file that has black pixels and white pixels. You are iterating through the pixels and want to save the x and y position of each black pi...
Hi I'm new to using Heap Allocation in C++. I'm tryin to understand the scenario that will force someone to create a private heap instead of using the Process Heap. Isn't Process Heap generally enough for most of the cases? Thanks --Ashish ...
I have a long running console app running through millions of iterations. I want to benchmark if memory usage increases linerally as the number of iterations increases. What would be the best way to go about this? I think I really only need to be concerned with Peak memory usage during a run right? I basically need to work out what is ...
Can anyone explain the following behaviour to a relative newbie... const char cInputFilenameAndPath[] = "W:\\testerfile.bin"; int filesize = 4584; char * fileinrampointer; fileinrampointer = (char*) malloc(filesize); ifstream fsInputFileStream; fsInputFileStream.open(cInputFilenameAndPath, fstream::in | fstream::binary); fsInputFileS...
Hi, When I write a C program, I encountered a problem that is as follows: malloc.c:3074: sYSMALLOc: Assertion (old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct ...
I have created a memory-only server instance of hsqldb , is it possible for me to connect to this memory database from 2 clients in separate jvms ? ...