GNU/Linux Application Programming (Programming Series)

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In This Chapter

• Introduction to GNU/Linux Semaphores

• Discussion of Binary and Counting Semaphores

• Creating and Configuring Semaphores

• Acquiring and Releasing Semaphores

• Single Semaphores or Semaphore Arrays

• The ipcs and ipcrm Utilities for Semaphores

Introduction

In this chapter, we ll explore the topic of semaphores. GNU/Linux provides both binary and counting semaphores using the same POSIX compliant API function set. We ll also investigate semaphores in GNU/Linux and their similarities with some of the other IPC (inter-process communication) mechanisms.