What are deadlocks in multi-threading and how can I avoid them?

What are deadlocks in multi-threading and how can I avoid them?

Deadlocks occur when two or more threads are blocked forever, each waiting for the other to release a resource. To avoid them, you can use techniques like resource ordering, timeout mechanisms, or deadlock detection algorithms.

Can you give me an example of a deadlock situation?

Sure! Imagine Thread A holds Resource 1 and needs Resource 2 to proceed, while Thread B holds Resource 2 and needs Resource 1. Neither can continue, resulting in a deadlock.

How can I implement resource ordering to prevent deadlocks?

You can assign a global order to resources and ensure that all threads request resources in that order. This way, you can prevent circular wait conditions that lead to deadlocks.

What tools can help me detect deadlocks in my application?

You can use tools like VisualVM, JConsole, or specific logging frameworks that can help you monitor thread states and detect deadlocks.