Course

Unit I

Operating systems Services

Overview – hardware protection, services, system calls, system structure, virtual machines. Process and Processor management. Process concepts, process creation, process scheduling, operations on process, cooperating process, inter-process communication. Multi-threading models – threading issues, thread types. CPU scheduling – scheduling algorithms.

Unit II

Process and Memory Management

Process synchronization- critical section problem, synchronization hardware, semaphores, classical problems of synchronization, critical regions, monitors. Deadlocks – deadlock characterization, methods of handling deadlocks, deadlock prevention, avoidance, detection and recovery. Memory management – swapping, contiguous memory allocation, paging and segmentation, segmentation with paging, virtual memory, demand paging, page replacement, thrashing.

Unit III

File and Disk Management

File management – File systems, directory structure, directory implementation. Disk Management – storage structure, disk scheduling.

Case study: Implement OS functionalities on a simulated machine (For example: XOS or eXperimental Operating System)

Course Objectives

• This course aims at introducing the structure and implementation of modern operating systems, virtual machines and their applications.
• It summarizes techniques for achieving process synchronization and managing resources like memory, CPU, and files and directories in an operation system.
• A study of common algorithms used for both pre-emptive and non-pre-emptive scheduling of tasks in operating systems (such a priority, performance comparison, and fair-share schemes) will be done.
• It gives a broad overview of memory hierarchy and the schemes used by the operating systems to manage storage requirements efficiently.

Course Outcomes

CO1: Understand the architecture and system calls of OS

CO2: Understand and apply the algorithms for resource management and scheduling.

CO3: Analyze and Apply semaphores and monitors for classical and real-world synchronization scenarios.

CO4: Engage in independent learning as a team and implement OS functionalities on a simulated machine.

CO-PO Mapping

Evaluation Pattern: 70:30

Textbook(s)

Silberschatz A, Gagne G, Galvin PB. “Operating system concepts”. Tenth Edition, John Wiley and Sons; 2018.

Reference(s)

Andrew S. Tanenbaum, Herbert Bos, “Modern Operating Systems”, Pearson Education India; Fourth edition 2016.

Stevens WR, Rago SA. “Advanced programming in the UNIX environment”. Second Edition, Addison-Wesley; 2013.