January 2018
Intermediate to advanced
374 pages
9h 53m
English
Content preview from C++ High Performance
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Instruction reordering
To understand the importance of the memory model, we first need some background about how programs we write are actually being executed.
When we write and run a program, it would be reasonable to assume that the instructions in the source code are being executed in the same order as they appear in the source code. This is not true though—the code we write will be optimized in multiple stages before it is finally executed. Both the compiler and the hardware will reorder instructions with the goal of executing the program more efficiently. This is not new technology: compilers have done this for a long time, and this is one reason why an optimized build runs faster than a non-optimized build. The compiler (and hardware) ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.