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:
“Daily life is governed by an economic system in which the production and consumption of insults tends to balance out.”
—Raoul Vaneigem (b. 1934)
“Wheeler: Aren’t you the fellow the Mexicans used to call “Brachine”?
Dude: That’s nearly right. Only it’s “Borracho.”
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—Jules Furthman (1888–1960)