Trait kernel::time::ClockSource

pub trait ClockSource {
    const ID: clockid_t;

    // Required method
    fn ktime_get() -> ktime_t;
}

Trait for clock sources.

Selection of the clock source depends on the use case. In some cases the usage of a particular clock is mandatory, e.g. in network protocols, filesystems. In other cases the user of the clock has to decide which clock is best suited for the purpose. In most scenarios clock Monotonic is the best choice as it provides a accurate monotonic notion of time (leap second smearing ignored).

Required Associated Constants

const ID: clockid_t

The kernel clock ID associated with this clock source.

This constant corresponds to the C side clockid_t value.

Required Methods

fn ktime_get() -> ktime_t

Get the current time from the clock source.

The function must return a value in the range from 0 to KTIME_MAX.

Object Safety

This trait is not object safe.

Implementors

impl ClockSource for BootTime

const ID: clockid_t = 7i32

impl ClockSource for Monotonic

const ID: clockid_t = 1i32

impl ClockSource for RealTime

const ID: clockid_t = 0i32

impl ClockSource for Tai

const ID: clockid_t = 11i32