Operating System Luo Yu, National Defense University of Science and Technology

(1) Operating system operating mechanism, interrupt/exception handling process, system calls and system usage interfaces. In class, we focus on explaining the operating mechanism of the operating system kernel function program, using analogies with daily life to explain the function of interrupts and implementation technology, using the actual operating system interface to demonstrate operating system utility programs, and allowing students to write a shell command interpreter in the after-school experiment. Understand system usage interfaces and use system calls in programming.

(2) Process concept, process switching and process scheduling. The actual operating system is used to demonstrate process creation and termination, and operating system tools are used to observe the properties of processes in the system and the rotation of processes. Classroom explanations emphasize the timing and methods of process scheduling switching, and multi-process programming is implemented in after-class experiments.
(3) Synchronous mutual exclusion primitives and applications. Heuristic explanation of the introduction of synchronized mutual exclusion primitives, some imperfect mutual exclusion implementations, guiding students to find out the shortcomings or errors of limited concurrency or inability to be mutually exclusive, and to find effective solutions. Use examples to repeatedly explain the application of primitives.
(4) Address translation and page replacement in paged virtual storage management. Put forward requirements from the perspective of user-friendly programming, introduce technology from the perspective of making full use of memory, and inspire students to understand the implementation of storage virtualization technology.
(5) The composition, function and interface of the driver, disk driver and request optimization, and caching technology. Use actual operating system driver files to enhance students' impressions, and use the operating system's delay or acceleration in reading and writing files and executing programs to illustrate disk request optimization and caching techniques.
(6) The directory structure and file storage and access permission mechanism of the file system. The file system is introduced by analogy with storage management, emphasizing the persistence characteristics of the file system, summarizing the security access mechanism of storage, and guiding students to understand operating system resource virtualization technology.
(7) Thread concept and thread implementation. The classroom uses actual operating systems to demonstrate threads, emphasizing the difference between threads and processes. The experiment advocates the use of threads for multi-programming, and compares the cost and security differences between multi-thread and multi-process programming.

• Chapter 1：Operating system overview (Part 1) (28 minutes and 33 seconds)

• Chapter 2：Operating System Overview (Part 2) (25 minutes and 43 seconds)

• Chapter 3：Operating system development history and current situation (Part 1) (46 minutes and 1 seconds)

• Chapter 4：Operating system development history and current situation (Part 2) (34 minutes and 59 seconds)

• Chapter 5：Interrupt system (Part 1) (52 minutes and 50 seconds)

• Chapter 6：Interrupt system (Part 2) (27 minutes and 47 seconds)

• Chapter 7：Operating system operating model and user interface (Part 1) (32 minutes and 49 seconds)

• Chapter 8：Operating system operating model and user interface (Part 2) (32 minutes and 49 seconds)

• Chapter 9：Process description and process status changes (Part 1) (39 minutes and 54 seconds)

• Chapter 10：Process description and process status changes (Part 2) (21 minutes and 37 seconds)

• Chapter 11：Process control and scheduling (Part 1) (48 minutes and 14 seconds)

• Chapter 12：Process control and scheduling (Part 2) (45 minutes and 23 seconds)

• Chapter 13：Concurrent execution issues (Part 1) (33 minutes and 55 seconds)

• Chapter 14：Concurrent execution issues (Part 2) (33 minutes and 19 seconds)

• Chapter 15：Synchronization and mutual exclusion implementation methods (Part 1) (41 minutes and 30 seconds)

• Chapter 16：Synchronization and mutual exclusion implementation methods (Part 2) (36 minutes and 57 seconds)

• Chapter 17：Process synchronization and communication (Part 1) (41 minutes and 39 seconds)

• Chapter 18：Process synchronization and communication (Part 2) (27 minutes and 53 seconds)

• Chapter 19：Deadlock (Part 1) (44 minutes and 46 seconds)

• Chapter 20：Deadlock (Part 2) (37 minutes and 37 seconds)

• Chapter 21：Continuous storage allocation (Part 1) (47 minutes and 21 seconds)

• Chapter 22：Continuous storage allocation (Part 2) (42 minutes and 33 seconds)

• Chapter 23：Segment page storage management, virtual storage (Part 1) (35 minutes and 50 seconds)

• Chapter 24：Segment page storage management, virtual storage (Part 2) (36 minutes and 7 seconds)

• Chapter 25：Virtual memory page replacement strategy (Part 1) (41 minutes and 54 seconds)

• Chapter 26：Virtual memory page replacement strategy (Part 2) (33 minutes and 16 seconds)

• Chapter 27：Equipment control principle (Part 1) (42 minutes and 5 seconds)

• Chapter 28：Equipment control principle (Part 2) (29 minutes and 42 seconds)

• Chapter 29：Device management, disk devices (Part 1) (33 minutes and 43 seconds)

• Chapter 30：Device management, disk devices (Part 2) (30 minutes and 58 seconds)

• Chapter 31：Files and file directories (Part 1) (41 minutes and 22 seconds)

• Chapter 32：Files and file directories (Part 2) (47 minutes and 58 seconds)

• Chapter 33：File system calls and file systems (Part 1) (46 minutes and 11 seconds)

• Chapter 34：File system calls and file systems (Part 2) (30 minutes and 44 seconds)

• Chapter 35：Thread concept (Part 1) (39 minutes and 30 seconds)

• Chapter 36：Thread concept (Part 2) (25 minutes and 41 seconds)

• Chapter 37：Core-level thread implementation and thread scheduling (Part 1) (33 minutes and 40 seconds)

• Chapter 38：Core-level thread implementation and thread scheduling (Part 2) (30 minutes and 8 seconds)

• Chapter 39：Distributed System (Part 1) (51 minutes and 27 seconds)

• Chapter 40：Distributed systems (Part 2) (48 minutes and 58 seconds)

• Chapter 41：Protection and Safety (Part 1) (41 minutes and 39 seconds)

• Chapter 42：Protection and Safety (Part 2) (39 minutes and 5 seconds)

• Chapter 43：New technologies in operating systems (Part 1) (36 minutes and 31 seconds)

• Chapter 44：New operating system technologies (Part 2) (34 minutes and 8 seconds)

• Chapter 45：Networked operating system technology in cloud computing environment (Part 1) (31 minutes and 46 seconds)

• Chapter 46：Networked operating system technology in cloud computing environment (Part 2) (44 minutes and 32 seconds)

• Chapter 47：Introduction to Ubuntu Kylin open source operating system and common commands (35 minutes and 56 seconds)

• Chapter 48：Implement a file system (51 minutes and 19 seconds)

• Chapter 49：File system design (29 minutes and 25 seconds)

• Chapter 50：Course plan and U disk driver development experiment (1) (40 minutes and 47 seconds)

• Chapter 51：U disk driver development experiment (2) (52 minutes and 20 seconds)