Chapter 51: Introduction to POSIX IPC

The POSIX.1b realtime extensions defined a set of IPC mechanisms that are analogous to the System V IPC mechanisms that we described in Chapters 45 to 48. (One of the POSIX.1b developers' aims was to devise a set of IPC mechanisms that did not suffer the deficiencies of the System V IPC facilities.) These IPC mechanisms are collectively referred to as POSIX IPC. The three POSIX IPC mechanisms are message queues, semaphores, and shared memory. This chapter provides an overview of the POSIX IPC facilities, focusing on the common features of the three POSIX IPC mechanisms.

51 Introduction to POSIX IPC
51.1 API Overview
51.2 Comparison of System V IPC and POSIX IPC
51.3 Summary

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