---
title: hazardTrackingMode
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlheapdescriptor/hazardtrackingmode
---

# hazardTrackingMode

The hazard tracking behavior for any resources you allocate from the heaps you create with this descriptor.

## Declaration

```swift
var hazardTrackingMode: MTLHazardTrackingMode { get set }
```

## Discussion

Discussion This property’s default value is MTLHazardTrackingMode.default, which is equivalent to MTLHazardTrackingMode.untracked for a heap. The resources you allocate from a heap inherit that heap’s hazard tracking mode.

## See Also

### Configuring a heap

- [type](metal/mtlheapdescriptor/type.md)
- [storageMode](metal/mtlheapdescriptor/storagemode.md)
- [cpuCacheMode](metal/mtlheapdescriptor/cpucachemode.md)
- [resourceOptions](metal/mtlheapdescriptor/resourceoptions.md)
- [size](metal/mtlheapdescriptor/size.md)
- [sparsePageSize](metal/mtlheapdescriptor/sparsepagesize.md)