February 2015
Intermediate to advanced
686 pages
18h 52m
English
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Chapter 19
Intertask Communication
Message Queue
Abstract
A POSIX message queue is a mechanism for asynchronous interprocess communication. Multiple tasks can send messages to a message queue; a sending task can be blocked when the target message queue is full. A message queue can also have multiple tasks receiving messages from it; a receiving task can be blocked when the queue is empty. A message queue allows nonblocking access when it is so configured. A POSIX message queue also features a notification mechanism that allows a process to register itself to a message queue and be asynchronously notified when the queue transitions from empty to nonempty. Message queues can be used to implement one-way, two-way, and client-server communications. ...
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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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