Introduction

Condition variables enable threads to be synchronized via messages.

They need the <condition_variable> header.

One thread acts as a sender, and the other acts as the receiver of the message. The receiver waits for a notification from the sender. Typical use cases for condition variables are sender-receiver or producer-consumer workflows.

A condition variable can be the sender or the receiver of the message.

The following table details the different condition variables and their respective functions.