---
title: ucontext64_t
framework: Kernel
role: symbol
role_heading: Structure
platforms: [macOS 11.0+]
path: kernel/ucontext64_t
---

# ucontext64_t

## Declaration

```occ
typedef struct ucontext64 {
    ...
} ucontext64_t;
```

## Topics

### Instance Properties

- [uc_link](kernel/ucontext64_t/3571403-uc_link.md)
- [uc_mcontext64](kernel/ucontext64_t/3571404-uc_mcontext64.md)
- [uc_mcsize](kernel/ucontext64_t/3571405-uc_mcsize.md)
- [uc_onstack](kernel/ucontext64_t/3571406-uc_onstack.md)
- [uc_sigmask](kernel/ucontext64_t/3571407-uc_sigmask.md)
- [uc_stack](kernel/ucontext64_t/3571408-uc_stack.md)