💻 Sudon't OS Scheduler

A mini OS kernel in C, simulating different process scheduling algorithms with memory management and IPC (inter-process communication) mechanisms.

🔄 Flow

📡 IPC Mechanisms:

• Message Queues → Sending process control blocks (PCBs) between the process generator and scheduler.
• Shared Memory → Clock synchronization across all processes and components.
• Unix Signals → Process control (start, stop, resume, finish) between the scheduler and user processes.

🗄️ Memory Management

• Implemented using the Buddy Allocation System.

✨ How to Run

Input file format must be as the following:

• Where Each line defines a process, with its attributes separated by a tab character

#id arrival runtime priority memory_size
1   0      10      5        64

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• Navigate to the source folder:

cd src/

• Compile

make

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Choose a scheduling algorithm:

Note

command format: ./bin/os-sim -s <scheduling-algorithm> -f <input-file>

• Round Robin:

./bin/os-sim -s rr -q <time-quantum> -f <input-file>

• Highest Priority First:

./bin/os-sim -s hpf -f <input-file>

• Shortest Remaining Time First:

./bin/os-sim -s srtn -f <input-file>

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output files:

• execution_log.txt: Timeline of process execution
• scheduler.log: State transitions and scheduling decisions
• memory.log: Memory allocation/de-allocation
• scheduler.perf: Performance statistics

👥 Contributors

Helana Nady

Alyaa Ali

Amr Samy

Anas Ibrahim