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  • Source document: introduction/features.md

  • Translation time: 2025-05-19 01:42:30

  • Translation model: Qwen/Qwen3-8B

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Features of DragonOS

Specifications

  • Bootloader: Multiboot2

  • Interface: POSIX 2008

Kernel Layer

Memory Management

  • Page Frame Allocator

  • Small Object Allocator

  • VMA (Virtual Memory Area)

  • Automatic MMIO Address Space Allocation

  • Page Mapper

  • Hardware Abstraction Layer

  • Independent User Address Space Management Mechanism

  • C Interface Compatibility Layer

Multicore

  • Multicore Boot

  • IPI (Inter-Processor Interrupt) Framework

Process Management

  • Process Creation

  • Process Reclamation

  • Kernel Threads

  • Fork

  • Exec

  • Process Sleep (Supports High-Precision Sleep)

  • Kthread Mechanism

  • Extensible Binary Loader

Synchronization Primitives

  • Mutex

  • Semaphore

  • Atomic Variables

  • Spinlock

  • Wait Queue

Scheduling

  • CFS Scheduler

  • Real-Time Scheduler (FIFO, RR)

  • Single-Core Scheduling

  • Multi-Core Scheduling

  • Load Balancing

IPC (Inter-Process Communication)

  • Anonymous Pipe

  • Signal

File System

  • VFS (Virtual File System)

  • FAT12/16/32

  • Devfs

  • RamFS

  • Procfs

  • Sysfs

Exception and Interrupt Handling

  • APIC

  • Softirq (Soft Interrupt)

  • Kernel Stack Traceback

Kernel Utility Library

  • String Operation Library

  • ELF Executable Support

  • printk

  • Basic Math Library

  • Screen Manager

  • TextUI Framework

  • CRC Function Library

  • Notification Chain

System Calls

  See System Call Documentation

Test Framework

  • ktest

Drivers

  • ACPI (Advanced Configuration and Power Interface) Module

  • IDE Hard Disk

  • AHCI Hard Disk

  • PCI, PCIe Bus

  • XHCI (USB 3.0)

  • PS/2 Keyboard

  • PS/2 Mouse

  • HPET (High Precision Event Timer)

  • RTC (Real-Time Clock)

  • Local APIC Timer

  • UART Serial Port

  • VBE (Video BIOS Extension) Display

  • VirtIO Network Card

  • x87 FPU

  • TTY Terminal

  • Floating Point Processor

User Layer

LibC

  • Basic System Calls

  • Basic Standard Library Functions

  • Partial Mathematical Functions

Shell Command Line Programs

  • Parsing Based on String Matching

  • Basic Commands

Http Server

  • A simple Http Server written in C, capable of running static websites.

Software Portability