February 2020
Intermediate to advanced
292 pages
8h 54m
English
Content preview from C++ System Programming Cookbook
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How it works...
Running the ./user1 and ./user2 programs would give the following interactions:
Let's perform the steps, as follows:
- Step 1: The first step just includes a few headers we need: stdio.h for the standard input/output (for example, perror , printf, and so on); mman.h for the shared memory APIs; mmap and fcntl.h for the shm_open flags (for example, O_CREAT, O_RDWR, and many others); unistd.h for the ftruncate method; and string.h for strlen and memcpy methods.
We defined STORAGE_ID1 and STORAGE_ID2 to identify the two shared memory objects, which will be available in the /dev/shm folder:
root@1f5b72ed6e7f:/BOOK/chapter6# ll /dev/shm/SHM_USER* ...
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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.