When should I use condition variables instead of semaphores?

When should I use condition variables instead of semaphores?

Condition variables are best for signaling between threads when a specific condition is met, while semaphores are used for controlling access to a resource.

Can you give me an example of when to use each?

Sure! Use a condition variable when a thread needs to wait for a specific condition, like a buffer being full. Use a semaphore when you want to limit access to a resource, like a pool of database connections.

What are the advantages of using condition variables?

Condition variables can lead to more efficient thread management since they allow threads to sleep until they are needed, reducing CPU usage.

Are there any downsides to using them?

Yes, condition variables can introduce complexity and potential for deadlocks if not managed carefully, especially in larger systems.