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잠금

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소프트웨어공학적으로 잠금이란 file(:12)이나 memory(:12)의 특정영역을 다른 프로세스(:12)가 접근하지 못하도록 - 한번에 하나의 프로세스만 해당 영역에 접근할 수 있도록 - 하는 것을 말한다. 잠금을 위한도구로는 flock(3), fcntl(2) 등이 사용된다.

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