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        • PCB의 구조
        • 쓰레드는 PCB를 갖고 있을까?
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  1. OS
  2. Operating System 101

Process Control Block (PCB)

프로세스 제어 블록이라고도 하며, PCB(Process Control Block)는 운영체제에서 프로세스에 대한 메타데이터를 저장한 ‘데이터’를 말합니다. 프로세스가 생성되면 운영체제는 해당 PCB를 생성합니다.

프로그램이 실행되면 프로세스가 생성되고 프로세스 주소 값들에 스택, 힙 등의 구조*를 기반으로 메모리가 할당됩니다. 그리고 이 프로세스의 메타데이터들이 PCB에 저장되어 관리됩니다. 이는 프로세스의 중요한 정보를 포함하고 있기 때문에 일반 사용자가 접근하지 못하도록 커널 스택의 가장 앞부분에서 관리됩니다.

메타데이터

데이터에 관한 구조화된 데이터이자 데이터를 설명하는 작은 데이터, 대량의 정보 가운데에서 찾고 있는 정보를 효율적으로 찾아내서 이용하기 위해 일정한 규칙에 따라 콘텐츠에 대해 부여되는 데이터

PreviousExecution process of a system callNextPCB의 구조

Last updated 1 year ago