---
title: "hv_vcpu_get_wait_for_interrupt_time(_:_:)"
framework: Hypervisor
role: symbol
role_heading: Function
platforms: [macOS 27.0+]
path: "hypervisor/hv_vcpu_get_wait_for_interrupt_time(_:_:)"
---

# hv_vcpu_get_wait_for_interrupt_time(_:_:)

## Declaration

```swift
func hv_vcpu_get_wait_for_interrupt_time(_ vcpu: hv_vcpu_t, _ time: UnsafeMutablePointer<UInt64>) -> hv_return_t
```

## Parameters

- `vcpu`: ID of the vcpu instance.
- `time`: Pointer to wait time value (written on success).

## Return Value

Return Value HV_SUCCESS on success, error code otherwise.

## Discussion

Discussion Returns the cumulative wait time of a vCPU spent at WFI instruction while waiting for interrupts in the units of mach_absolute_time(). Must be called by the owning thread. Returns HV_UNSUPPORTED if the VM was created without a GIC device (hv_gic_create).