January 2004
Intermediate to advanced
432 pages
11h 1m
English
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Abstraction Layers
We have used the term abstraction and should spend a moment talking about what it means with regard to kernel design. When we consider the task of resource management, we must determine the level of control we wish to implement in our management scheme. One of the tricks of the trade involves grouping individual components of a system resource into uniform-sized blocks, chunks, extents, pages, and so on. The availability of the resource is then tracked at the level of these granular units, thus reducing the complexity of kernel data structures.
A classic case is that of memory management. A computer's physical RAM consists of circuits representing single bits of data storage; these are combined into sets of eight and referred ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.