tanj299 / operating-systems-simulator

Operating Systems Simulator

ABOUT:

The purpose of this project is to simulate an operating system and listen to commands from users. The project uses a first-come, first-serve preemptive CPU scheduling algorithm. Initially, the project will ask the user two questions:

a) How much memory should be allocated? (Up to 4 billion bytes) b) How many hard disks exist

The program will start listening for command input by users including:

Create new process:

Create new process:

>> A <INT PRIORITY> <LONG MEMORY>

Move current process to hard disk number to "perform" I/O operations with file (read/write)

Move current process to hard disk number to "perform" I/O operations with file (read/write)

>> d <INT HARD-DISK-NUMBER> <STRING FILE-NAME>

Current process in CPU exits:

Current process in CPU exits:

>> exit

Process completes I/O operations with file

Process completes I/O operations with file

>> D <INT HARD-DISK-NUMBER>

fork() current process using CPU:

Copy current process using CPU:

>> fork

Display current process and ready queue:

Display current process and ready queue:

>> S r 

Display current hard disks and the process with the files each process is using:

Display current hard disks and the process with the files each process is using:

>> S i

Display all processes and memory allocation:

Display all processes and memory allocation:

>> S m

Compiled on: gcc (Ubuntu 7.4.0-1ubuntu-18.04.1) 7.4.0

To compile program:

1. Unzip and extract files into a convenient directory; ex: the Desktop, Documents, home, etc.

2. Change directory into /operating-systems-simulator

3. In terminal, change directory into ../operating-systems-simulator

4. Use command: make clean make ./output