0
A process in an operating system is represented by a data structure known as a process control block (PCB) or process descriptor. The PCB contains important information about the specific process including
- The current state of the process i.e., whether it is ready, running, waiting, or whatever.
- Unique identification of the process in order to track "which is which" information.
- A pointer to parent process.
- Similarly, a pointer to child process (if it exists).
- The priority of process (a part of CPU scheduling information).
- Pointers to locate memory of processes.
- A register save area.
- The processor it is running on.
The PCB is a certain store that allows the operating systems to locate key information about a process. Thus, the PCB is the data structure that defines a process to the operating systems.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is the Purpose of process control block diagram?
The purpose of process control block diagram is to make the process fast and accurate. It guides an engineer to achieve the target in time
What is process control block in operating system?
All of the information needed to keep track of a process when switching is kept in a data package called process control block.s A PCB is a data structure in the operating system kernel containing the information needed to manage a particular process. The PCB is the manifestation of a process in an operating system,
What are the steps performed by an operating system to create a new process?
1. Assign a unique process identifier to the new process.2. Allocate space for the process.3. Initialize the process control block.4. Set the appropriate linkages.5. Create or expand other data structures.
Explain the function of boot block during the system startup?
Boot block (4K,8L,16K,32K,64K128K) is portion of code in the complete BIOS(1MB5MB). who's responsibility is validate the main BIOS and transferring the control to main BIOS (checks whether BIOS corrupted or not and some other properties).
The function of your installations drf?
Unit control centers
What is the Purpose of process control block diagram?
The purpose of process control block diagram is to make the process fast and accurate. It guides an engineer to achieve the target in time
Explain the purpose of process control block?
to explain the process currently
What do you call the process of testing flow of control between a main function and its subordinate function?
function-call and returning (actually, it is 'passing', not 'testing')
What is a thread control block?
thread control block contain thread specific information such as -Stack pointer, PC, thread state (running, …), register values, a pointer to PCB, … The Thread Control Block acts as a library of information about the Thraeds in a system. Specific information is stored in the Thread control block highlighting important information about each process. By: ASIM JAVAID IQBAL
How many bytes are needed to structure process control block?
there 45 bytes are needed to structure pcb
Can any one suggest you how to do a project in c where one can control external devicesplz advice on how to proceed and the prerequisites?
If there are multiple devices, use a "control block" or some other static data struct to represent the current state of the external device. One control block per device. A control block can be little more than a structure containing information such as a device ID, device type, what the device is currently doing, what commands have been sent, a communication status and any other information that might be considered helpful. Typically, a control block like that will only be updated by one process (in a multiprocessing environment) but may be visible by many processes. Alternatively all information about the control block might only be updated and visible by the single process and information about a device would be sent using some kind of interprocess communication. In such an environment, one process would be responsible for maintaining the control block, one process would be responsible for reading/writing to the port, one process would be responsible for managing the work and one process would be responsible for the human interface.
Explain function block method for programming programmable logic controller?
I use Control Logx5000 programming software for its function block. Here is Rockwell's catalog numbers and its price for software. 9324-RLDSFCE ($855) & 9324-RLD300ENE ($2845)
What is the function of mylar capacitor?
In electronic circuits a capacitor is used to pass AC and block DC.
What is the basic function of a physiological feedback loops?
So the body doesnt get out of control. To regulate the process.<- Study island answer
What is the Basic function of a physiological feedback?
So the body doesnt get out of control. To regulate the process.<- Study island answer
What is an adaptation's function?
An adaptive-control function is the part of a control system which dynamically updates the parameters of an optimizing control function or a direct control function.
What is process control block in operating system?
All of the information needed to keep track of a process when switching is kept in a data package called process control block.s A PCB is a data structure in the operating system kernel containing the information needed to manage a particular process. The PCB is the manifestation of a process in an operating system,
