Operating System Tutorial - GeeksforGeeks
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概览
收录于
2026年3月17日
学科与领域
computer-science-advanced · operating-systems
年级范围
十一年级（高三）–十二年级（高四）
页面类型
Tutorial
关键词
Operating System Process Management Memory Management Inter Process Communication Deadlock Prevention Multithreading Concepts CPU Scheduling Algorithms Resource Allocation Graph Virtual Memory Disk Scheduling Algorithms File Systems Critical Section Solutions Semaphore vs Mutex Process Control Block Paging and Segmentation
简介
Operating System Fundamentals and Core Concepts
- Definition: An Operating System (OS) is software that acts as an interface between users and hardware, managing system resources like CPU, memory, and files.
- Examples: Linux, Unix, Windows 11, MS-DOS, Android, macOS, and iOS.
- Process Management: Covers process states, control blocks, CPU scheduling algorithms (preemptive vs. non-preemptive), and the distinction between dispatchers and schedulers.
- Process Synchronization: Explores Inter-Process Communication (IPC), race conditions, critical sections, and solutions including Semaphores, Mutex, Monitors, and algorithms like Peterson’s and Dekker’s.
- Deadlock: Details deadlock handling, prevention, and avoidance (Banker’s Algorithm), as well as Resource Allocation Graphs (RAG) and recovery methods.
- Multithreading: Discusses user-level vs. kernel-level threads, multitasking models, and the benefits of multithreading.
- Memory Management:
- Allocation: Covers contiguous (fragmentation, Buddy System) and non-contiguous (paging, segmentation) allocation.
- Advanced Concepts: Includes page replacement algorithms (Belady’s Anomaly), thrashing, and working sets.
- Kernel Level: Details slab systems, memory interleaving, and virtualization.
- Disk and File Management: Covers file systems, directory structures, file allocation/access methods, disk scheduling algorithms (e.g., SSTF), and the differences between spooling and buffering.
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