Process Control block, PCB

is a data structure to manage the process settings. Is the only sign that the system-aware process exists.
Typically contains information such as the following:
(1) Process identifier (unique)
(2) Process current state, usually the same state of the process will be placed in the same queue;
(3) Procedure and data address of the process
(4) List of process resources. Lists the resource records owned by other than the CPU.
(5) Process priority. Degree of urgency of the reaction process
(6) CPU field protected area. Log the CPU state at interrupt Time
(7) The link word of the PCB of the process queue.
(9) Other information related to the process. Bookkeeping, such as how long it takes to use the CPU.

Process Control block, PCB