Lecture 13 - Threads

Question 1

Concurrency vs Parallelism

Answer 1

Concurrency is doing many things at the same time. Parallelism is splitting one big job into several small tasks onto multiple processors.

Question 2

Heisenbugs

Answer 2

Bugs that appear due to different expectations with respect to scheduling.

Question 3

Synchronization

Answer 3

As soon as one thread enters a synchronized method of Object O, no other thread can enter a synchronized method of Object O.

Question 4

Threads v Processes

Answer 4

A process is a running program. Within one process, you can do multiple things at the same time. This is done by threads. Threads in a specific process work with the same piece of memory.