Enum QoSLivelinessPolicy

pub enum QoSLivelinessPolicy {
    SystemDefault = 0,
    Automatic = 1,
    ManualByTopic = 3,
}

The LIVELINESS DDS QoS policy.

This policy describes a publisher’s reporting policy for its alive status. For a subscription, these are its requirements for its topic’s publishers.

Compatibility

Publisher	Subscription	Compatible
Automatic	Automatic	yes
Automatic	ManualByTopic	no
ManualByTopic	Automatic	yes
ManualByTopic	ManualByTopic	yes

Variants

SystemDefault = 0

Use the default policy of the RMW layer.

Automatic = 1

The signal that establishes that a topic is alive comes from the ROS rmw layer.

ManualByTopic = 3

The signal that establishes that a topic is alive is sent explicitly. Only publishing a message on the topic or an explicit signal from the application to assert liveliness on the topic will mark the topic as being alive.

Trait Implementations

impl Clone for QoSLivelinessPolicy

fn clone(&self) -> QoSLivelinessPolicy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for QoSLivelinessPolicy

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

Formats the value using the given formatter.

impl Ord for QoSLivelinessPolicy

fn cmp(&self, other: &QoSLivelinessPolicy) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for QoSLivelinessPolicy

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for QoSLivelinessPolicy

fn partial_cmp(&self, other: &QoSLivelinessPolicy) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for QoSLivelinessPolicy

impl Eq for QoSLivelinessPolicy

impl StructuralPartialEq for QoSLivelinessPolicy