February 2020
Beginner to intermediate
616 pages
15h 16m
English
Content preview from Practical C Programming
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How to do it…
- Invoke the ftok function to generate an IPC key. The filename and ID that are supplied should be the same as those in the program for writing content into shared memory.
- Invoke the shmget function to allocate a shared memory segment. The size that's specified for the allocated memory segment is 1024 and is associated with the IPC key that was generated in step 1. Create the memory segment with read and write permissions.
- Attach the shared memory segment to the first available address in the system.
- The content from the shared memory segment is read and displayed on screen.
- The attached memory segment is detached from the address space.
- The shared memory identifier is removed from the system, followed by destroying the shared ...
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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.