Garbage Collection: Algorithms for Automatic Dynamic Memory Management Rafael D Lins, Richard Jones
Publisher: Wiley

Memory allocated dynamically had to be managed carefully because if allocated memory is not de-allocated after it's use is over, it becomes garbage and un-available (called memory leak) and slowly runs out of space. Explicit ownership can reduce unnecessary memory management overhead by taking back the work from the system (the garbage collector) and allowing programmers to be explicit about who owns what. LISP in 1959 started a new technique called Automatic Memory Management known by the more popular term Garbage Collection (GC). In this case The task is to allocate the memory for matrix NxM dynamically and release it next time . Garbage Collection: Algorithms for Automatic Dynamic Memory Management by Richard Jones, Rafael Lins - Find this book online from $26.99. As I pointed out yesterday, with FastMM available, memory management is so much of a solved problem that it's a non-problem. (See: every implementation of garbage collection ever devised, including ARC.) This is where semantic attributes come in. When zombies are enabled, a deallocated object's class is dynamically changed to be _NSZombie, and by default, the memory region is never marked as free, although this can be controlled separately. In addition, it can mean the CPU has to jump around to lots of different memory locations to find pieces of dynamically-allocated memory in different locations. Moving object fields to an object's or record's automatic destruction list would mean moving them to FinalizeRecord, and for the life of me, I cannot understand why FinalizeRecord exists at all. Where this jumping around causes caches to be I have had to solve have really been memory problems. Unlike JAVA garbage collection mechanism where the memory for allocated object is automatically reclaimed by system when it goes out of scope, in iPhone framework developer need to take care of releasing the memory for the object. Nevertheless, all of the commonly used JVMs have garbage collectors, and most garbage collectors use similar algorithms to manage their memory and perform collection operations. Dynamically load and bind libraries for which GObjectIntrospection data is available. Often high performance applications use complex data structures and complex algorithms which requires a lot of memory management and the software developer can provide the best way of memory management. Nor does it specify how a garbage collector should work. Methods, constructors Garbage collector integration with GObject reference counts for automatic memory management. Other words, often memory management operations are done by software developer manually in code (except languages with automatic garbage collection and so on).