Thread pools in Operating Systems - Mini Project: Build & Apply

Understanding Thread Pools

📖 Scenario: You are learning how computers manage multiple tasks at the same time. Thread pools help by keeping a set of ready-to-use threads to handle tasks efficiently.

🎯 Goal: Build a simple explanation and example of how a thread pool works, showing how tasks are assigned to threads from the pool.

📋 What You'll Learn

Create a list of tasks to be processed

Define the maximum number of threads in the pool

Assign tasks to threads using the thread pool concept

Show how threads complete tasks and become available again

💡 Why This Matters

🌍 Real World

Thread pools are used in software to manage multiple tasks without creating new threads each time, saving time and resources.

💼 Career

Understanding thread pools is important for software developers, system administrators, and anyone working with concurrent or parallel programming.

1

Create a list of tasks

Create a list called tasks with these exact string values: 'Task1', 'Task2', 'Task3', 'Task4', and 'Task5'.

Operating Systems

# Create a list called tasks with 'Task1', 'Task2', 'Task3', 'Task4', and 'Task5'
# Your code here

Need a hint?

Use square brackets to create a list and separate items with commas.

2

Set the maximum number of threads

Create a variable called max_threads and set it to the number 3 to represent the maximum threads in the pool.

Operating Systems

tasks = ['Task1', 'Task2', 'Task3', 'Task4', 'Task5']
# Set max_threads to 3
# Your code here

Need a hint?

Use a simple assignment to create the variable.

3

Assign tasks to threads

Create a dictionary called thread_pool where keys are thread names 'Thread1', 'Thread2', and 'Thread3', and values are empty lists to hold assigned tasks.

Operating Systems

tasks = ['Task1', 'Task2', 'Task3', 'Task4', 'Task5']
max_threads = 3
# Create thread_pool dictionary with keys 'Thread1', 'Thread2', 'Thread3' and empty lists as values
# Your code here

Need a hint?

Use curly braces to create a dictionary with keys and empty list values.

4

Distribute tasks among threads

Write a for loop using i and task with enumerate(tasks). Inside the loop, assign each task to the thread in thread_pool with key f'Thread{(i % max_threads) + 1}' by appending the task to that thread's list.

Operating Systems

tasks = ['Task1', 'Task2', 'Task3', 'Task4', 'Task5']
max_threads = 3
thread_pool = {'Thread1': [], 'Thread2': [], 'Thread3': []}
# Use a for loop with i, task in enumerate(tasks) to assign tasks to threads
# Your code here

Need a hint?

Use the modulo operator to cycle through thread names and append tasks to their lists.