Process Control Block (PCB)
Each process is represented in the operating system by a process control block (PCB)—also called a task control block. It contains many pieces of information associated with a specific process, including these:
Process Control Block (PCB)
Each process is represented in the operating system by a process control block (PCB)—also called a task control block. It contains many pieces of information associated with a specific process, including these:
A process terminates when it finishes executing its final statement and asks the operating system to delete it by calling the exit system call. At that point, the process may return data to its parent process (via the wait system call). All the resources of the process including physical and virtual memory, open the files and I/O buffers – are de allocated by the operating system.
PROCESS :
The term process was first introduced by the designers of multi system in 1960. A process is a program in execution .It is the basic unit of resource allocation in an operating system. A process has a starting and ending point. It most execute and progress sequentially. A process is controlled and scheduled by operating system. An operating system executes different programs depending on the system.