How does thread synchronization work in the pthreads library?

How does thread synchronization work in the pthreads library?

Thread synchronization in the pthreads library is achieved using mutexes, condition variables, and barriers to control access to shared resources.

Can you explain what a mutex is and how to use it?

A mutex, or mutual exclusion, is a locking mechanism that prevents multiple threads from accessing a shared resource simultaneously. You can use it by initializing a mutex, locking it before accessing the resource, and unlocking it afterward.

What are condition variables and when should I use them?

Condition variables are used to block a thread until a particular condition is met. They are useful for signaling between threads, especially when one thread needs to wait for another to complete a task.

Are there any common pitfalls to avoid with thread synchronization?

Yes, common pitfalls include deadlocks, where two or more threads are waiting on each other to release resources, and race conditions, where the outcome depends on the timing of thread execution.