Struct MonotonicNs 

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

Cumulative-time counter, nanoseconds, accumulated by the kernel from thread birth. Same temporal-window shape as MonotonicCount but tagged for the ns auto-scale ladder (ns → µs → ms → s).

Examples: run_time_ns, wait_time_ns, wait_sum, voluntary_sleep_ns, block_sum, iowait_sum, core_forceidle_sum. Cross-field ratios (e.g. run_time_ns / (run_time_ns + wait_time_ns)) are valid because every MonotonicNs field on crate::ctprof::ThreadState is integrated over the same thread-lifetime window.

u64 backing vs kernel s64

Some kernel sources for these values are typed s64 — sum_sleep_runtime and sum_block_runtime live in struct sched_statistics (include/linux/sched.h) as s64. The capture pipeline parses these via parsed_ns_from_dotted in crate::ctprof, which returns Err(ParseDottedNs::Negative) on negative dotted values; the parse_sched closure maps that to None, and the capture-site unwrap_or(0) then collapses None to zero before the wrapper is constructed. The u64 backing here is therefore safe because the parser path guarantees non-negative input — NOT because the kernel field type promises non-negative. Any new writer that bypasses parsed_ns_from_dotted must replicate its non-negative guard. A future capture-side change that exposes raw kernel s64 directly would need a sentinel-aware wrapper or a dedicated SignedNs newtype.

Tuple Fields

0: u64

Trait Implementations

impl Clone for MonotonicNs

fn clone(&self) -> MonotonicNs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MonotonicNs

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

Formats the value using the given formatter.

impl Default for MonotonicNs

fn default() -> MonotonicNs

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MonotonicNs

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MonotonicNs

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

Formats the value using the given formatter.

impl From<MonotonicNs> for u64

fn from(v: MonotonicNs) -> Self

Converts to this type from the input type.

impl From<u64> for MonotonicNs

fn from(v: u64) -> Self

Converts to this type from the input type.

impl Hash for MonotonicNs

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 MonotonicNs

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

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

fn partial_cmp(&self, other: &MonotonicNs) -> 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 MonotonicNs

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 MonotonicNs

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 MonotonicNs

impl Eq for MonotonicNs

impl StructuralPartialEq for MonotonicNs