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# feedbackQueue

Assigns a dispatch queue to which Metal submits feedback notification blocks.

```
unowned(unsafe) var feedbackQueue: dispatch_queue_t? { get set }
```

## Discussion

When you assign a dispatch queue via this method, Metal requires that the queue parameter you provide is a serial queue.

If you set the value of property to `nil`, the default, Metal allocates an internal dispatch queue to service feedback
notifications.

---

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