Trait MemoryUsage 

pub trait MemoryUsage {
    // Provided method
    fn heap_usage(&self) -> usize { ... }
}

For inspecting how much memory a value is using.

This trait specifically measures heap memory. If you want to measure stack memory too, add mem::size_of_val() to it. (This only really matters for the outermost type in a hierarchy.)

Provided Methods

fn heap_usage(&self) -> usize

The heap memory usage of this type. The default implementation returns 0.

Implementations on Foreign Types

impl MemoryUsage for bool

impl MemoryUsage for f32

impl MemoryUsage for f64

impl MemoryUsage for i8

impl MemoryUsage for i16

impl MemoryUsage for i32

impl MemoryUsage for i64

impl MemoryUsage for i128

impl MemoryUsage for isize

impl MemoryUsage for str

impl MemoryUsage for u8

impl MemoryUsage for u16

impl MemoryUsage for u32

impl MemoryUsage for u64

impl MemoryUsage for u128

impl MemoryUsage for ()

impl MemoryUsage for usize

impl MemoryUsage for String

fn heap_usage(&self) -> usize

impl MemoryUsage for AtomicUsize

impl MemoryUsage for Total<f32>

Available on crate feature decorum only.

impl MemoryUsage for Total<f64>

Available on crate feature decorum only.

impl MemoryUsage for i256

Available on crate feature ethnum only.

impl MemoryUsage for u256

Available on crate feature ethnum only.

impl<A: Array> MemoryUsage for SmallVec<A>

where A::Item: MemoryUsage,

Available on crate feature smallvec only.

fn heap_usage(&self) -> usize

impl<A: MemoryUsage, B: MemoryUsage> MemoryUsage for (A, B)

fn heap_usage(&self) -> usize

impl<K: MemoryUsage + Eq + Hash, S: BuildHasher> MemoryUsage for HashSet<K, S>

Available on crate feature hashbrown only.

fn heap_usage(&self) -> usize

impl<K: MemoryUsage + Eq + Hash, V: MemoryUsage, S: BuildHasher> MemoryUsage for HashMap<K, V, S>

Available on crate feature hashbrown only.

fn heap_usage(&self) -> usize

impl<K: MemoryUsage, V: MemoryUsage> MemoryUsage for BTreeMap<K, V>

fn heap_usage(&self) -> usize

impl<T: MemoryUsage + ?Sized> MemoryUsage for &T

fn heap_usage(&self) -> usize

impl<T: MemoryUsage + ?Sized> MemoryUsage for Box<T>

fn heap_usage(&self) -> usize

impl<T: MemoryUsage + ?Sized> MemoryUsage for Rc<T>

fn heap_usage(&self) -> usize

impl<T: MemoryUsage + ?Sized> MemoryUsage for Arc<T>

fn heap_usage(&self) -> usize

impl<T: MemoryUsage> MemoryUsage for Option<T>

fn heap_usage(&self) -> usize

impl<T: MemoryUsage> MemoryUsage for [T]

fn heap_usage(&self) -> usize

impl<T: MemoryUsage> MemoryUsage for Vec<T>

fn heap_usage(&self) -> usize

impl<T: MemoryUsage, const N: usize> MemoryUsage for [T; N]

fn heap_usage(&self) -> usize

Implementors