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:
“I have no concern with any economic criticisms of the communist system; I cannot enquire into whether the abolition of private property is expedient or advantageous. But I am able to recognize that the psychological premises on which the system is based are an untenable illusion. In abolishing private property we deprive the human love of aggression of one of its instruments ... but we have in no way altered the differences in power and influence which are misused by aggressiveness.”
—Sigmund Freud (1856–1939)
“We know not what it is, dear, this sleep so deep and still;
The folded hands, the awful calm, the cheek so pale and chill;
The lids that will not lift again, though we may call and call;
The strange white solitude of peace that settles over all.”
—Mary Mapes Dodge (1831–1905)