# ThreadIndex

> Returns the index of the current thread.

## Definition

* **Type:** Property
* **Namespace:** [Unity.Collections](/engine/6000.7/script-reference/unity/collections.md)
* **Assembly:** UnityEngine.ManagedKernelModule

```csharp
public int ThreadIndex { get; }
```

### Remarks

In a job, each thread gets its own copy of the ParallelWriter struct, and the job system assigns each copy the index of its thread.