Back To Module Home

Java Multithreading

0% completed

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 Java's Monitor & Hoare vs Mesa Monitors Semaphore vs Monitor Amdahl's Law Moore's Law

Multithreading in Java

Thready Safety & Synchronized Wait & Notify Interrupting Threads Volatile Reentrant Locks & Condition Variables Missed Signals Semaphore in Java Spurious Wakeups

Java Memory Model

Java Memory Model

Reordering Effects

The happens-before Relationship

Java Thread Basics

Setting-up Threads Basic Thread Handling Executor Framework Executor Implementations Thread Pools Types of Thread Pools An Example: Timer vs ScheduledThreadPool Callable Interface Future Interface CompletionService Interface ThreadLocal CountDownLatch CyclicBarrier Concurrent Collections

Reordering Effects

We'll cover the following

Introduction
Affect of memory architectures

Introduction

As discussed earlier the JMM allows for reordering of statements in the program order as long as the outcome of the program isn’t altered. Consider the program below and try to come up with all the possible outcomes the program can have: