Libraries

PowerOS is a nice little powerful OS. All the services provided by the OS -- the so called system calls -- has been catagorized into Libraries, Devices and Handlers. Libraries provide APIs to kernel data structures, IPC mechanisms, memory management, mutual exclusion and synchronization etc.

To call any of the service provided by a library, the library must be opened first. In PowerOS, Exec library is the master library. It need not be opened by a program to acccess its services. When PowerOS starts, by default, it is opened.