Definition of System call

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system call
<operating systemprogramming> 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.
(1995-03-01)

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System call definition was found in categories: Language, Idioms & Slang(2)  Encyclopedia(1)  

System call Definition from Language, Idioms & Slang Dictionaries & Glossaries

WordNet 2.0
system call

Noun
1. an instruction that interrupts the program being executed and passes control to the supervisor
(synonym) supervisor call instruction
(hypernym) call

hEnglish - advanced version
system call

system call
n : an instruction that interrupts the program being executed and passes control to the supervisor [syn: supervisor call instruction ]





System call Definition from Encyclopedia Dictionaries & Glossaries

Wikipedia English - The Free Encyclopedia
System call
In computing, a system call is the mechanism used by an application program to request service from the operating system.

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