# hv_vcpu_get_wait_for_interrupt_time(_:_:) ``` func hv_vcpu_get_wait_for_interrupt_time(_ vcpu: hv_vcpu_t, _ time: UnsafeMutablePointer) -> hv_return_t ``` ## Parameters `vcpu` ID of the vcpu instance. `time` Pointer to wait time value (written on success). ## Return Value HV_SUCCESS on success, error code otherwise. ## Discussion\abstract Returns the cumulative wait time of a vCPU spent at WFI instruction while waiting for interrupts in the units of mach_absolute_time(). \discussion Must be called by the owning thread. Returns HV_UNSUPPORTED if the VM was created without a GIC device (hv_gic_create). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)