Книга: Real-Time Concepts for Embedded Systems

7.1 Introduction

7.1 Introduction

Chapter 6 discusses activity synchronization of two or more threads of execution. Such synchronization helps tasks cooperate in order to produce an efficient real-time system. In many cases, however, task activity synchronization alone does not yield a sufficiently responsive application. Tasks must also be able to exchange messages. To facilitate inter-task data communication, kernels provide a message queue object and message queue management services.

This chapter discusses the following:

· defining message queues,

· message queue states,

· message queue content,

· typical message queue operations, and

· typical message queue use.

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