What are semaphores in C# threading?

What are semaphores in C# threading?

Semaphores are synchronization primitives that control access to a resource by multiple threads in C#. They help prevent race conditions.

How do I implement a semaphore in my C# application?

You can implement a semaphore using the SemaphoreSlim class. Here's a basic example: SemaphoreSlim semaphore = new SemaphoreSlim(1);.

What is the difference between Semaphore and SemaphoreSlim?

Semaphore is a more heavyweight synchronization primitive that can be used across processes, while SemaphoreSlim is lightweight and designed for use within a single process.

Can you give me a code example of using SemaphoreSlim?

Sure! Here's a simple example:

SemaphoreSlim semaphore = new SemaphoreSlim(1);

async Task AccessResourceAsync() {
    await semaphore.WaitAsync();
    try {
        // Access the resource
    } finally {
        semaphore.Release();
    }
}