System Image

Optional features are implemented as components that can be added to, or removed from, an instance of the ChorusOS operating system, known as the system image. The system image is made up of binary or executable files that define the operating system and initial application processes. Once you have built your system image, you are ready to start using the ChorusOS operating system. In this way, the operating system can be very finely tuned to meet the requirements of a given application or environment. The core executive component must always be present in a ChorusOS system image.

Each API function in the ChorusOS operating system is contained in one or more of the configurable components. As long as at least one of these components is configured into a given system image, the function is available to be called. Some library functions are independent of any specific component and are always available.