In computing, a system call is how a program requests a service from an operating system's kernel. This may include hardware related services (e.g. accessing the hard disk), creating and executing new processes, and communicating with integral kernel services (like scheduling). System calls provide an essential interface between a process and the operating system.
Read more about System Call: Privileges, The Library As An Intermediary, Examples and Tools, Typical Implementations, Processor Mode and Context Switching
Famous quotes containing the words system and/or call:
“The North American system only wants to consider the positive aspects of reality. Men and women are subjected from childhood to an inexorable process of adaptation; certain principles, contained in brief formulas are endlessly repeated by the press, the radio, the churches, and the schools, and by those kindly, sinister beings, the North American mothers and wives. A person imprisoned by these schemes is like a plant in a flowerpot too small for it: he cannot grow or mature.”
—Octavio Paz (b. 1914)
“Are we aware of our obligations to a mob? It is the mob that labour in your fields and serve in your houses—that man your navy, and recruit your army—that have enabled you to defy the world, and can also defy you when neglect and calamity have driven them to despair. You may call the people a mob; but do not forget that a mob too often speaks the sentiments of the people.”
—George Gordon Noel Byron (1788–1824)