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Delphi thread save variable3/11/2023 ![]() To fix these and other problems, programming languages typically implement their own internal memory management algorithms. In other words, 4,076 bytes would be wasted. For example, if you call Windows’ VirtualAlloc function to get 20 bytes of memory, it will actually reserve 4 KB (or 4,096 bytes) for you. In lots of cases, a memory system also doesn’t know how to return small chunks of memory. Slicing and dicing memory straight from the operating system is a relatively slow operation. The article is an excerpt from a book written by Primož Gabrijelčič, titled Delphi High Performance. In this tutorial, we will touch upon memory management techniques, the most prime factor in parallel programming. When an object is not needed anymore, that memory can be returned to the loving care of the operating system. When a program needs some memory, for example, to create an object, it can ask the operating system and it will give it a slice of shared memory. Multiple programs must coexist inside a limited memory space, and that can only be possible if the operating system is taking care of it. Memory management is part of practically every computing system.
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