Within a C# instance method, can 'this' ever be null?

Question

I have a situation where very rarely a Queue of Objects is dequeuing a null. The only call to Enqueue is within the class itself:

m_DeltaQueue.Enqueue(this);         


        

Answer 1

Queues are not inherently thread safe. This is your issue. Use a mutex/lock/whatever or look for a thread safe-queue.