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what is process control block in operating system ?

Operating system playlist link    • Operating system   what is process control block in operating system ? Description: The Process Control Block (PCB) is a data structure used by operating systems to manage and track information about processes. It contains vital details and attributes of a process, enabling the operating system to manage processes efficiently. The PCB is created for each process when it is created or initiated. It resides in the operating system's memory and is associated with a specific process throughout its execution. The PCB holds various process-related information, including: 1. Process ID (PID): A unique identifier assigned to each process, allowing the operating system to distinguish between different processes. 2. Process State: Represents the current state of the process, such as running, ready, waiting, suspended, or terminated. This information assists the operating system in process scheduling and resource allocation decisions. 3. Program Counter (PC): Stores the address of the next instruction to be executed in the process. It facilitates context switching and resuming execution from the correct point. 4. CPU Registers: Includes the values of CPU registers at the time of process interruption or suspension. The CPU registers store essential data during process execution, and their values are saved/restored during context switches. 5. Memory Management Information: Contains details about the memory allocated to the process, such as the base address, limit, page tables, segment tables, and other memory-related information. 6. Priority: Represents the relative importance or urgency of a process for scheduling purposes. It assists the operating system in determining the order in which processes should be given CPU time. 7. Open Files: Maintains a list of files opened by the process during its execution. It helps in tracking and managing file resources and permissions. 8. Parent Process ID: Indicates the PID of the parent process that created the current process. It establishes the relationship between parent and child processes. The PCB is crucial for efficient process management, context switching, resource allocation, and handling process-related operations in the operating system. Keywords for YouTube search: 1. Process Control Block (PCB) in operating systems 2. PCB in OS 3. Process management data structure 4. PCB attributes and information 5. Process ID (PID) in PCB 6. Process state and lifecycle in PCB 7. Program Counter (PC) in PCB 8. CPU registers in PCB 9. Memory management details in PCB 10. PCB role in operating system process management.