---
title: sadb_comb_hard_usetime
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.6+]
path: kernel/sadb_comb/1588177-sadb_comb_hard_usetime
---

# sadb_comb_hard_usetime

## Declaration

```occ
u_int64_t sadb_comb_hard_usetime;
```