What are condition variables in C++?

What are condition variables in C++?

Condition variables are synchronization primitives that enable threads to wait until a particular condition occurs.

How do you use condition variables in a C++ program?

You typically use condition variables with a mutex. You lock the mutex, check the condition, and if it's not met, you call wait on the condition variable.

Can you give an example of using condition variables?

Sure! Here's a simple example: You have a producer-consumer scenario where the consumer waits for the producer to signal that data is available.

What are the advantages of using condition variables?

They help avoid busy waiting, allowing threads to sleep until they are notified, which improves efficiency.