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All LessonsFree Lessons (8)

The Basics

Introduction Program vs Process vs Thread Concurrency vs Parallelism Cooperative Multitasking vs Preemptive Multitasking Synchronous vs Asynchronous I/O Bound vs CPU Bound Throughput vs Latency Critical Sections & Race Conditions Deadlocks, Liveness & Reentrant Locks Mutex vs Semaphore Mutex vs Monitor Hoare vs Mesa Monitors Semaphore vs Monitor Amdahl's Law Moore’s Law

API Overview

Creating Threads

Sleeping and Terminating Threads

Exception Handling in Threads

Thread Variables

Condition Variables

Global Interpreter Lock

Brief Intro to Asynchronous Programming

Introduction ... continued Fiber ... continued ... continued

Interview Practice Problems

Implementing Semaphore Blocking Queue | Bounded Buffer | Consumer Producer ... continued ... continued Rate Limiting Using Token Bucket Filter Thread Safe Deferred Callback ReadWrite Lock Unisex Bathroom Problem Implementing a Barrier Uber Ride Problem Dining Philosophers Barber Shop Asynchronous to Synchronous Problem Multithreaded Merge Sort Thread-safe Singleton

Bonus Questions

Ordered Printing Printing Number Series (Zero, Even, Odd)Printing FooBar n Times Build a Molecule Fizz Buzz Problem

Epilogue

Acknowledgements

Practice Mock Interview

Ruby Concurrency for Senior Engineering Interviews/

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Condition Variables

Condition Variables

This lesson explores the use of condition variables in Ruby.

We'll cover the following...

Condition Variables

Synchronization mechanisms need more than just mutual exclusion; a general need is to be able to wait for another thread to do something. Condition variables provide mutual exclusion and the ability for threads to wait for a predicate to become true.

Condition variables is always associated with a lock and in case of Ruby that lock is an instance of the Mutex class. Using condition variables allows us to rid ourselves of writing ...