Struct VMClockShmHeader 

#[repr(C)]
pub struct VMClockShmHeader {
    pub magic: AtomicU32,
    pub size: AtomicU32,
    pub version: AtomicU16,
    pub counter_id: AtomicU8,
    pub time_type: AtomicU8,
    pub seq_count: AtomicU32,
}

Header structure to the Shared Memory segment where the VMClock data is kept.

Most members are atomic types as they are subject to be updated by the Hypervisor.

Fields

magic: AtomicU32

Magic number to uniquely identify the content of the memory segment.

size: AtomicU32

Size of the memory segment.

version: AtomicU16

Version identifying the layout of data written to the shared memory segment.

counter_id: AtomicU8

Counter ID.

time_type: AtomicU8

Time type.

Possible values are:

VMCLOCK_TIME_UTC 0 // Since 1970-01-01 00:00:00z VMCLOCK_TIME_TAI 1 // Since 1970-01-01 00:00:00z VMCLOCK_TIME_MONOTONIC 2 // Since undefined epoch VMCLOCK_TIME_INVALID_SMEARED 3 // Not supported VMCLOCK_TIME_INVALID_MAYBE_SMEARED 4 // Not supported

seq_count: AtomicU32

Implementations

impl VMClockShmHeader

pub fn read(vector: &Vec<u8>) -> Result<Self, ShmError>

Initialize a VMClockShmHeader from a vector of bytes.

It is assumed that the vecxtor has already been validated to have enough bytes to hold.

Trait Implementations

impl Debug for VMClockShmHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.