Kernel, processes and threads

1. Kernel, processes and threads Windows and Linux

2. Windows Architecture • Operating system design • Modified microkernel • Layered • Components • HAL • Interacts with hardware, drives device components on mainboard • Abstracts hardware specifics that differ between systems of the same architecture • Microkernel • Basic system mechanisms • Thread scheduling, interrupt dispatching, etc.

3. Kernel information

4. Process and Thread • Process • Execution context • Program code • Resources • Associated threads • Threads: units of execution • Process and threads are objects

5. Thread Scheduling

6. Processes information

7. Linux Architecture • Monolithic kernel • Contains modular components, however • UNIX-like or UNIX-based operating system • Six primary subsystems: • Process management • Interprocess communication • Memory management • File system management • VFS: provides a single interface to multiple file systems • I/O management • Networking

8. Linux Kernel Architecture

9. Process and Thread Organization

10. Process information