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What is a PCB (Process Control Block?

April 26, 2017block CONTROL PCB process

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What is a PCB (Process Control Block?

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Process Control Block (PCB) is an operating system data structure that contains information about the resources and environment of a process. Each process has a PCB. The process creation attempt by your program may fail if there are no more process control blocks available. A process control block (PCB) is used by the operating system to control process execution. The PCB contains pointers to the process code and data areas, retains process context when the process is suspended, and contains pointers to files opened by the process. For example, a saveabend file is created for the process if the saveabend bit is set for the process in the process control block (PCB).