The book contains: Evolution of Operating Systems: Types of operating systems - Different views of the operating systems - Principles of Design and Implementation. The process concept - system programmer's view of processes - operating system's views of processes - operating system services for process management. Process scheduling - Schedulers - Scheduling Algorithms. Structural overview, Concept of process and Process synchronization, Process Management and Scheduling, Hardware requirements: protection, context switching, privileged mode; Threads and their Management; Tools and Constructs for Concurrency, Detection and Prevention of deadlocks, Mutual Exclusion: Algorithms, semaphores - concurrent programming using semaphores.