April 2012
Intermediate to advanced
352 pages
8h
English
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Tying Everything Together
Example 2-1 is a revision of Example 1-2 that uses its own malloc_type structure instead of the kernel-defined M_TEMP.[2] Example 2-1 should clarify any misunderstandings you may have about MALLOC_DEFINE and MALLOC_DECLARE.
Note
To save space, the functions echo_open, echo_close, echo_write, and echo_read aren’t listed here, as they haven’t been changed.
Example 2-1. echo-2.0.c
#include <sys/param.h> #include <sys/module.h> #include <sys/kernel.h> #include <sys/systm.h> #include <sys/conf.h> #include <sys/uio.h> #include <sys/malloc.h> #define BUFFER_SIZE 256MALLOC_DECLARE(M_ECHO); MALLOC_DEFINE(M_ECHO, "echo_buffer", "buffer ...
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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.