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polkadot_node_core_pvf_common

Struct ProcessTime

pub struct ProcessTime(/* private fields */);
Expand description

CPU Time Used by The Whole Process

This is an opaque type similar to std::time::Instant. Use elapsed() or duration_since() to get meaningful time deltas.

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impl ProcessTime

pub fn try_now() -> Result<ProcessTime, Error>

Get current CPU time used by a process process

pub fn now() -> ProcessTime

Get current CPU time used by a process

§Panics

If CLOCK_THREAD_CPUTIME_ID is not supported by the kernel.

On Linux, it was added in version 2.6.12 (year 2005).
On OpenBSD & FreeBSD support was added in 2013.
On MacOS, clock_gettime was not supported until Sierra (2016).

pub fn try_elapsed(&self) -> Result<Duration, Error>

Returns the amount of CPU time used from the previous timestamp to now.

pub fn elapsed(&self) -> Duration

Returns the amount of CPU time used from the previous timestamp to now.

§Panics

If ProcessTime::now() panics.

pub fn duration_since(&self, timestamp: ProcessTime) -> Duration

Returns the amount of CPU time used from the previous timestamp.

pub fn as_duration(&self) -> Duration

Returns the total amount of CPU time used from the program start.

Trait Implementations§

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impl Clone for ProcessTime

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fn clone(&self) -> ProcessTime

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ProcessTime

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

Formats the value using the given formatter. Read more
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impl Hash for ProcessTime

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

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for ProcessTime

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

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

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impl Eq for ProcessTime

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impl StructuralPartialEq for ProcessTime

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