RTEMS 4.5.1-pre3 On-Line Library

Semaphore Manager Using as a Binary Semaphore

RTEMS ITRON 3.0 API User's Guide

3.3.1: Using as a Binary Semaphore

Creating a semaphore with a limit on the count of 1 effectively restricts the semaphore to being a binary semaphore. When the binary semaphore is available, the count is 1. When the binary semaphore is unavailable, the count is 0.

Since this does not result in a true binary semaphore, advanced binary features like the Priority Inheritance and Priority Ceiling Protocols are not available.

RTEMS ITRON 3.0 API User's Guide