Enum rustix::time::TimerfdClockId
source · [−]#[repr(u32)]
#[non_exhaustive]
pub enum TimerfdClockId {
Realtime,
Monotonic,
Boottime,
RealtimeAlarm,
BoottimeAlarm,
}time only.Expand description
CLOCK_* constants for use with timerfd_create.
Variants (Non-exhaustive)
This enum is marked as non-exhaustive
Realtime
CLOCK_REALTIME—A clock that tells the “real” time.
This is a clock that tells the amount of time elapsed since the Unix epoch, 1970-01-01T00:00:00Z. The clock is externally settable, so it is not monotonic. Successive reads may see decreasing times, so it isn’t reliable for measuring durations.
Monotonic
CLOCK_MONOTONIC—A clock that tells an abstract time.
Unlike Realtime, this clock is not based on a fixed known epoch, so
individual times aren’t meaningful. However, since it isn’t settable,
it is reliable for measuring durations.
This clock does not advance while the system is suspended; see
Boottime for a clock that does.
Boottime
CLOCK_BOOTTIME—Like Monotonic, but advances while suspended.
This clock is similar to Monotonic, but does advance while the system
is suspended.
RealtimeAlarm
CLOCK_REALTIME_ALARM—Like Realtime, but wakes a suspended system.
This clock is like Realtime, but can wake up a suspended system.
Use of this clock requires the CAP_WAKE_ALARM Linux capability.
BoottimeAlarm
CLOCK_BOOTTIME_ALARM—Like Boottime, but wakes a suspended system.
This clock is like Boottime, but can wake up a suspended system.
Use of this clock requires the CAP_WAKE_ALARM Linux capability.
Trait Implementations
sourceimpl Clone for TimerfdClockId
impl Clone for TimerfdClockId
sourcefn clone(&self) -> TimerfdClockId
fn clone(&self) -> TimerfdClockId
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read more