Struct MonotonicCount 

#[repr(transparent)]
pub struct MonotonicCount(pub u64);

Pure monotonic counter — only ever goes up over a thread’s lifetime, accumulated by the kernel from thread birth to the moment of the procfs read. Sum across a group; delta across snapshots scopes the value to the inter-capture interval.

Examples in crate::ctprof_compare::CTPROF_METRICS: nr_wakeups, nr_migrations, voluntary_csw, nonvoluntary_csw, wait_count, iowait_count, timeslices, minflt, majflt, syscr, syscw.

nr_threads is NOT in this category — it is a structural gauge that goes up AND down at runtime (threads spawn and exit), so it reduces by max across a group, not sum. See GaugeCount.

Tuple Fields

0: u64

Trait Implementations

impl Clone for MonotonicCount

fn clone(&self) -> MonotonicCount

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MonotonicCount

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

Formats the value using the given formatter.

impl Default for MonotonicCount

fn default() -> MonotonicCount

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MonotonicCount

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MonotonicCount

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

Formats the value using the given formatter.

impl From<MonotonicCount> for u64

fn from(v: MonotonicCount) -> Self

Converts to this type from the input type.

impl From<u64> for MonotonicCount

fn from(v: u64) -> Self

Converts to this type from the input type.

impl Hash for MonotonicCount

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MonotonicCount

fn cmp(&self, other: &MonotonicCount) -> 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 MonotonicCount

fn eq(&self, other: &MonotonicCount) -> 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 MonotonicCount

fn partial_cmp(&self, other: &MonotonicCount) -> 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 Serialize for MonotonicCount

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Summable for MonotonicCount

fn sum_across(items: impl IntoIterator<Item = Self>) -> Self

Sum across the iterator, saturating at u64::MAX. Empty input collapses to the additive identity (zero).

fn try_sum_across(items: impl IntoIterator<Item = Self>) -> Option<Self>

Same total as sum_across on every non-empty input; returns None for an empty iterator so callers can distinguish “no contributors” from “all contributors summed to zero.” Useful when a downstream derived metric (e.g. a ratio) needs to suppress the row entirely rather than render 0 / 0.

impl Copy for MonotonicCount

impl Eq for MonotonicCount

impl StructuralPartialEq for MonotonicCount