Enum ClockType 

pub enum ClockType {
    SystemTime,
    SteadyTime,
    RosTime,
}

Type of clock to use for time queries

Variants

SystemTime

System time (wall clock)

This clock reflects the system’s real-time clock and may be affected by NTP adjustments, user changes, or daylight saving time. Use for timestamps that need to correlate with real-world time.

SteadyTime

Steady/monotonic time

This clock is guaranteed to be monotonically increasing and is not affected by system time changes. Use for measuring durations and timeouts. Reads the port’s nros_platform_clock_ns where one is linked, and the caller-advanced counter where none is.

RosTime

ROS time (simulation time)

This clock can be overridden for simulation purposes. When a ROS time override is active — a simulator’s or a bag player’s /clock — now() returns the overridden time. Otherwise it IS SystemTime, which is what rclcpp’s ClockType::ROS_TIME reads with use_sim_time false, so a node written for simulation still runs standalone.

Trait Implementations

impl Clone for ClockType

fn clone(&self) -> ClockType

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ClockType

impl Debug for ClockType

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

Formats the value using the given formatter.

impl Default for ClockType

fn default() -> ClockType

Returns the “default value” for a type.

impl Eq for ClockType

impl PartialEq for ClockType

fn eq(&self, other: &ClockType) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ClockType