Puzzle 2: process thread, parallel concurrency, synchronous and asynchronous, blocking fee, blocking

1、 Serial, parallel, concurrent

1. Name explanation

Concurrency and parallelism focus on whether programs are executed at the same time

2. For example

In addition:

2、 Process and thread

1. Name explanation

Resources between processes are not shared, but resources between threads are shared (so locks are introduced to deal with resource allocation)

2. For example

3、 Synchronous and asynchronous

1. Name explanation

Synchronous and asynchronous focus on message communication mechanisms

2. For example

4、 Blocking and non blocking

1. Explanation of terms

Blocking and non blocking focus on the state of the program while waiting for the call result (message, return value)

2. For example