Round Robin Scheduling Program In C With Gantt Chart
Introduction
Round Robin Scheduling is a scheduling algorithm that is widely used in operating systems. It is a preemptive algorithm that allows each process to get a fair share of the CPU time. In this algorithm, the processes are executed in a circular order. Each process is given a fixed time slot or quantum to execute, and if the process does not complete its execution in that time, it is preempted and moved to the end of the queue.
How Does Round Robin Scheduling Work?
In Round Robin Scheduling, the processes are arranged in a queue. The first process in the queue is executed for a fixed time quantum. If the process completes its execution within the time quantum, it is removed from the queue. If the process does not complete its execution within the time quantum, it is preempted and moved to the end of the queue. The next process in the queue is then executed for the time quantum, and the process continues until all the processes have been executed.
Implementing Round Robin Scheduling in C
Implementing Round Robin Scheduling in C is quite simple. The first step is to define a structure to represent the process. The structure should contain the process ID, arrival time, burst time, and remaining time.
After defining the structure, the next step is to create an array of processes and populate it with the process information. Once the array is populated, the processes are arranged in a queue based on their arrival time.
Finally, the Round Robin Scheduling algorithm is implemented. The algorithm consists of a loop that runs until all the processes have been executed. In each iteration of the loop, the first process in the queue is executed for a fixed time quantum. If the process completes its execution within the time quantum, it is removed from the queue. If the process does not complete its execution within the time quantum, it is preempted and moved to the end of the queue.
Gantt Chart
A Gantt chart is a graphical representation of a project schedule. It is commonly used in project management to illustrate the start and finish dates of the various components of a project.
In Round Robin Scheduling, a Gantt chart can be used to visualize the execution of the processes. The chart consists of a horizontal axis that represents time and a vertical axis that represents the processes. Each process is represented by a horizontal bar that shows the start and end times of the process.
Conclusion
Round Robin Scheduling is a popular scheduling algorithm that is widely used in operating systems. It is a preemptive algorithm that allows each process to get a fair share of the CPU time. Implementing Round Robin Scheduling in C is quite simple, and a Gantt chart can be used to visualize the execution of the processes.
