https://github.com/ahmednassar7/os-simulator

An OS simulator with Round Robin scheduling, non-dynamic memory management, and Process Control Blocks to efficiently handle processes' information and execution within allocated memory.
https://github.com/ahmednassar7/os-simulator

java memory-management operating-system process-manager sheduler simulator

Last synced: 5 days ago
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An OS simulator with Round Robin scheduling, non-dynamic memory management, and Process Control Blocks to efficiently handle processes' information and execution within allocated memory.

• Host: GitHub
• URL: https://github.com/ahmednassar7/os-simulator
• Owner: AhmedNassar7
• Created: 2024-01-23T16:45:34.000Z (11 months ago)
• Default Branch: main
• Last Pushed: 2024-01-23T16:48:21.000Z (11 months ago)
• Last Synced: 2024-11-06T04:25:32.260Z (about 2 months ago)
• Topics: java, memory-management, operating-system, process-manager, sheduler, simulator
• Language: Java
• Homepage:
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# OS-simulator

# Scheduling

A scheduler that is responsible for scheduling between the processes in the Ready

Queue. It ensures that all processes get a chance to execute. the algorithm used is Round Robin. Round

robin is a scheduling algorithm where each process is assigned a fixed time slice.

For this project, each process executes 2 instructions in its time slice.

# Memory Management

The OS manage it and assigns a space for each process. The memory is of non-dynamic size. The

memory is large enough to hold the un-parsed lines of code, variables and PCB

for each of the processes. The memory is divided into memory words, each word

can store 1 variable and it’s corresponding data. 

Processes doesn't  access any data outside their allocated

memory block.

# Process Control Block

A process control block is a data structure used by computer operating systems to

store all the information about a process.In order to schedule your processes, you

will need to keep a PCB for every process. The PCB should contain the following

information:

1. Process ID (Assume that the ID corresponds to the program number)

2. Process State

3. Program Counter

4. Memory Boundaries

# Output

When  run the main class ,  The

system will start by reading the program files from the disk and assigning memory

locations for each of the aforementioned processes. Once all the processes are

loaded in the memory, the OS will start the scheduling process. The scheduler

will choose the process to run and do so by checking the processes states from the

PCBs stored in the memory, then running the selected process’s code from the

memory.