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

Garbage Collection: Algorithms for Automatic Dynamic Memory Management Rafael D Lins, Richard Jones ebook
Page: 203
ISBN: 0471941484, 9780471941484
Publisher: Wiley
Format: pdf

Another justification of the heap is that many algorithms are unable to perform their tasks without the need of a variable sized array or object, and thus require special allocations at run-time. Dynamic memory allocation (Java-style) is done with malloc / calloc / realloc in C. You probably heard, read or even learned that Flex was managing the memory automatically for you, does it mean you don't have any responsibility regarding memory management in Flex? €�…garbage collection (GC) is a form of automatic memory management. It doesn't support automatic garbage collection, one of the most important features introduced in Java. Thankfully, modern languages with automatic garbage collection avoid this problem (by pretending it doesn't exist). The second is when the developer has partial control , with self-managing units of memory such as lists in LISP or pseudo-managed objects in Objective-C. Memory management in Flex using garbage collection, responsibilities it puts on developers, classical causes of memory leaks and good practices to avoid them. These are not garbage collected - you need to explicitly free every pointer that you allocated. C++ supports dynamic memory allocation with the help of new and delete. The access of automatic variables is a very fast assisted by hardware, so there is no loss of efficiency there. There is a delete operator in Flex, but it's only for freeing dynamic properties, not for deleting objects. There is no actual allocation or deallocation going on: the space in the automatic memory (AKA "on the stack") is allocated by some compile-time bookkeeping around the stack pointer.