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:
“Some rough political choices lie ahead. Should affirmative action be retained? Should preference be given to people on the basis of income rather than race? Should the system be—and can it be—scrapped altogether?”
—David K. Shipler (b. 1942)
“What I call a good patient is one who, having found a good physician, sticks to him till he dies.”
—Oliver Wendell Holmes, Sr. (1809–1894)