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system call
(redirected from System calls)

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system call [′sis·təm ‚kȯl]
(computer science)
supervisor call
(operating system, programming)system call - The mechanism used by an application program to request service from the operating system. System calls often use a special machine code instruction which causes the processor to change mode (e.g. to "supervisor mode" or "protected mode"). This allows the OS to perform restricted actions such as accessing hardware devices or the memory management unit.
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Monitoring Sequences of system calls to detect abnormal behaviour of programs is analog to this feature.
An immunological approach to computer viruses detection by Samy, Moataz; Badr, Amr; Gamal, Salwa El / Computing and Information Systems
POSIX provides a standard API for system calls based on UNIX, and is often used in the government/military/aerospace market.
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