#[non_exhaustive]#[repr(u32)]pub enum TimerfdClockId {
Realtime = 0,
Monotonic = 1,
Boottime = 7,
RealtimeAlarm = 8,
BoottimeAlarm = 9,
}
Expand description
CLOCK_*
constants for use with timerfd_create
.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Realtime = 0
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 = 1
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 = 7
CLOCK_BOOTTIME
—Like Monotonic
, but advances while suspended.
This clock is similar to Monotonic
, but does advance while the system
is suspended.
RealtimeAlarm = 8
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 = 9
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§
source§impl Clone for TimerfdClockId
impl Clone for TimerfdClockId
source§fn clone(&self) -> TimerfdClockId
fn clone(&self) -> TimerfdClockId
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for TimerfdClockId
impl Debug for TimerfdClockId
source§impl<'a, Num: ArgNumber> From<TimerfdClockId> for ArgReg<'a, Num>
impl<'a, Num: ArgNumber> From<TimerfdClockId> for ArgReg<'a, Num>
source§fn from(i: TimerfdClockId) -> Self
fn from(i: TimerfdClockId) -> Self
source§impl Hash for TimerfdClockId
impl Hash for TimerfdClockId
source§impl PartialEq for TimerfdClockId
impl PartialEq for TimerfdClockId
source§fn eq(&self, other: &TimerfdClockId) -> bool
fn eq(&self, other: &TimerfdClockId) -> bool
self
and other
values to be equal, and is used
by ==
.