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Memory management
A Simple Garbage Collector for C++
The use of dynamically allocated memory must be managed, because it has a tremendous effect on the performance of your programs. The current trend in handling dynamic memory seems to be shifting toward an automated approach. While C++ uses the manual approach for managing dynamic memory, this does not mean that it can't be automated in that language -- thus giving the C++ programmer the best of both worlds. This article explains how to do it.
Heap Memory Manager
ANSI C code and HTML description of a portable, public-domain heap memory manager (dynamic memory allocator). Uses best-fit with maximal coalescing of adjacent free blocks. My testing with GCC and VC++ .NET indicates that this heap memory manager is slower than malloc/free from the standard library when the average allocation size is small. But, as the average allocation size gets bigger, the speed of this heap manager exceeds that of malloc/free.
How To Find Memory Leaks
This article describes the methods a project team used to clean up the code (especially finding memory leaks) before the alpha testing started.
Inside Memory Management
Memory management is one of the most fundamental areas of computer programming. In many scripting languages, you don't have to worry about how memory is managed, but that doesn't make memory management any less important. Knowing the abilities and limitations of your memory manager is critical for effective programming. Get an overview of the memory management techniques that are available to Linux programmers, focusing on the C language but applicable to other languages as well.
Memory management in C++
This term paper aims to illustrate the memory management in C++ with the detailed study of problems of memory management and ways to handle them properly. To provide a better view figures are used where needed. For the new reader of memory management a brief introduction is give, which introduces with memory management, it’s need and its important terminologies. Then problems of memory management are discussed. In the next section different techniques used in memory management are described with its methods commonly used like sequential and non-sequential techniques to handle memory. Then the next section briefly describes the Garbage Collection, which include mark and sweep, space reclamation, compaction, copy method and incremental garbage collection is discussed. In the end a brief history is given about memory management.
Modern Memory Management, Part 2
There's a real drive toward testing these days. If you develop any sort of application seriously, you've likely heard recommendations to write comprehensive automated tests. Is that really useful? Michele Simionato explores the arguments for and against automated testing, and shows how to automate web app testing using Python and the twill utility.
Restrict Object Allocation to Specific Memory Types
While C++'s three memory storage types provide an unparalleled degree of flexibility with respect to memory management, this diversity can sometimes make things more difficult like when you need to allocate objects of a certain class exclusively on the free-store. Find out how to enforce memory allocation policies by controlling the access type of a class's member functions.
Self-manage data buffer memory
The C programming language defines two standard memory management functions: malloc() and free(). C programmers frequently use those functions to allocate buffers at run time to pass data between functions. In many situations, however, you cannot predetermine the actual sizes required for the buffers, which may cause several fundamental problems for constructing complex C programs. In this article, Xiaoming Zhang advocates a self-managing, abstract data buffer. He outlines a pseudo-C implementation of the abstract buffer and details the advantages of adopting this mechanism.
Self-Managed Data Buffer Memory
The C programming language defines two standard memory
management functions: malloc() and free(). C programmers
frequently use those functions to allocate buffers at run time
to pass data between functions. In many situations, however,
you cannot predetermine the actual sizes required for the
buffers, which may cause several fundamental problems for
constructing complex C programs. In this article, Xiaoming
Zhang advocates a self-managing, abstract data buffer. He
outlines a pseudo-C implementation of the abstract buffer and
details the advantages of adopting this mechanism.
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