Code Examples

Programming examples used in lectures and labs

Course Code Examples

This directory contains all the code examples, demonstrations, and utilities used throughout the Operating Systems course.

Directory Structure

Process Examples

Process API: fork_demo_*.c, exec_demo_*.c, wait_demo_*.c
Process Creation: p1.c, p2.c, p3.c, p4.c
Hello World Programs: hello.c, hello_world.c, hello_assembly.c

CPU Scheduling

Scheduling Simulator: scheduler.py, cpu-virtual.py
MLFQ Implementation: mlfq.py
Lottery Scheduling: cpu-sched-lottery/lottery.c

Memory Management

Memory Examples: mem.c, mem2.c, mem3.c
Address Translation: memory-address.c
Virtual Memory: vm-intro/va.c
Memory Simulation: relocation.py

Threading and Concurrency

Thread Examples: hello_thread.c, sum_thread.c
Thread API: threads-intro/ directory
Synchronization: Files in various lab directories

I/O and System Calls

I/O Examples: io.c
System Call Tracing: trace-io.*

Python Simulators

CPU Scheduling: scheduler.py
Memory Management: relocation.py, x86.py
Process Execution: process-run.py

Assembly Examples

Assembly Code: hello_world.s, loop.s, simple-race.s
Threading: looping-race-nolock.s

How to Use

Compilation: Most C programs can be compiled with gcc filename.c -o filename
Python Scripts: Run with python3 script.py
Makefiles: Use make in directories that contain Makefiles
Threading: Compile with -pthread flag for threading examples

Common Headers

common.h - Shared definitions and includes
common_threads.h - Threading-specific includes

Lab-Specific Code

Several subdirectories contain code specific to lab exercises: - intro/ - Introduction examples - cpu-api/ - Process API exercises
- threads-intro/ - Threading introduction - vm-intro/ - Virtual memory introduction

Getting Started

Start with the intro/ directory for basic examples
Use the Python simulators to understand concepts before diving into C code
Check the README files in subdirectories for specific instructions

Note: All code examples are provided for educational purposes. Make sure to understand the concepts before running the programs.

--- title: "Code Examples" subtitle: "Programming examples used in lectures and labs" format: html: css: ../custom.scss --- ## Course Code Examples This directory contains all the code examples, demonstrations, and utilities used throughout the Operating Systems course. ## Directory Structure ### Process Examples - **Process API**: `fork_demo_*.c`, `exec_demo_*.c`, `wait_demo_*.c` - **Process Creation**: `p1.c`, `p2.c`, `p3.c`, `p4.c` - **Hello World Programs**: `hello.c`, `hello_world.c`, `hello_assembly.c` ### CPU Scheduling - **Scheduling Simulator**: `scheduler.py`, `cpu-virtual.py` - **MLFQ Implementation**: `mlfq.py` - **Lottery Scheduling**: `cpu-sched-lottery/lottery.c` ### Memory Management - **Memory Examples**: `mem.c`, `mem2.c`, `mem3.c` - **Address Translation**: `memory-address.c` - **Virtual Memory**: `vm-intro/va.c` - **Memory Simulation**: `relocation.py` ### Threading and Concurrency - **Thread Examples**: `hello_thread.c`, `sum_thread.c` - **Thread API**: `threads-intro/` directory - **Synchronization**: Files in various lab directories ### I/O and System Calls - **I/O Examples**: `io.c` - **System Call Tracing**: `trace-io.*` ### Python Simulators - **CPU Scheduling**: `scheduler.py` - **Memory Management**: `relocation.py`, `x86.py` - **Process Execution**: `process-run.py` ### Assembly Examples - **Assembly Code**: `hello_world.s`, `loop.s`, `simple-race.s` - **Threading**: `looping-race-nolock.s` ## How to Use 1. **Compilation**: Most C programs can be compiled with `gcc filename.c -o filename` 2. **Python Scripts**: Run with `python3 script.py` 3. **Makefiles**: Use `make` in directories that contain Makefiles 4. **Threading**: Compile with `-pthread` flag for threading examples ## Common Headers - `common.h` - Shared definitions and includes - `common_threads.h` - Threading-specific includes ## Lab-Specific Code Several subdirectories contain code specific to lab exercises: - `intro/` - Introduction examples - `cpu-api/` - Process API exercises - `threads-intro/` - Threading introduction - `vm-intro/` - Virtual memory introduction ::: {.callout-tip} ### Getting Started - Start with the `intro/` directory for basic examples - Use the Python simulators to understand concepts before diving into C code - Check the README files in subdirectories for specific instructions ::: --- **Note**: All code examples are provided for educational purposes. Make sure to understand the concepts before running the programs.