What's in this book?
This book introduces you to what the QNX Neutrino RTOS is and how it functions. It
contains chapters covering process states, threads, scheduling policies, message
passing, operating system modularity, and so on. If you've never used QNX Neutrino
before, but are familiar with realtime operating systems, then you'll want to pay
particular attention to the chapters on message passing and resource managers, since
these are concepts fundamental to QNX Neutrino.
Processes and Threads (p. 23)
An introduction to processes and threads in QNX Neutrino, realtime,
scheduling, and prioritization. You'll learn about scheduling states and QNX
Neutrino's scheduling policies, as well as the functions you use to control
scheduling, create processes and threads, and modify processes and threads
that are already running. You'll see how QNX Neutrino implements SMP
(Symmetrical Multi-Processing), and the advantages (and pitfalls) that this
brings.
“Scheduling and the real world” (p. 88) discusses how threads are scheduled
on a running system, and what sorts of things can cause a running thread
to be rescheduled.
Message Passing (p. 91)
An introduction to QNX Neutrino's most fundamental feature, message
passing. You'll learn what message passing is, how to use it to communicate
between threads, and how to pass messages over a network. Priority inversion,
the bane of realtime systems everywhere, and other advanced topics are also
covered here.
This is one of the most important chapters in this
book!
Clocks, Timers, and Getting a Kick Every So Often (p. 151)
Learn all about the system clock and timers, and how to get a timer to send
you a message. Lots of practical information here, and code samples galore.
Interrupts (p. 183)
This chapter will teach you how to write interrupt handlers for QNX Neutrino,
and how interrupt handlers affect thread scheduling.
Resource Managers (p. 205)
Copyright © 2014, QNX Software Systems Limited 19
What's in this book?
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