Operating System Unit-1 Introduction and need of the operating system, layered architecture/ logical structure of the operating system, Type of OS, the operating system as the resource manager and virtual machine, OS services, BIOS, System Calls/Monitor Calls, Firmware- BIOS, Boot Strap Loader. Process management- Process model, creation, termination, states & transitions, hierarchy, context switching, process implementation, process control block, Basic System calls- Linux & Windows. Threads- processes versus threads, threading, concepts, models, kernel & user-level threads, thread usage, benefits, multithreading models. Unit-2 Interprocess communication- Introduction to message passing, Race condition, critical section problem, mutual exclusion with busy waiting- disabling interrupts, lock variables, st...
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