What is shared memory in multithreading?

What is shared memory in multithreading?

Shared memory in multithreading is a method where multiple threads can access the same memory space, allowing for efficient data sharing.

How does it differ from message passing?

Unlike message passing, where data is sent between threads, shared memory allows direct access to the same data, which can be faster but requires synchronization.

What are the synchronization mechanisms used?

Common synchronization mechanisms include mutexes, semaphores, and condition variables, which help prevent data races.

Can you give an example of using shared memory?

Sure! In a producer-consumer scenario, a producer thread can write data to a shared buffer while a consumer thread reads from it, using mutexes to synchronize access.