Trait datasize::DataSize

pub trait DataSize {
    const IS_DYNAMIC: bool;
    const STATIC_HEAP_SIZE: usize;

    // Required method
    fn estimate_heap_size(&self) -> usize;

    // Provided method
    fn estimate_detailed_heap_size(&self) -> MemUsageNode { ... }
}

Indicates that a type knows how to approximate its memory usage.

Required Associated Constants

const IS_DYNAMIC: bool

If true, the type has a heap size that can vary at runtime, depending on the actual value.

const STATIC_HEAP_SIZE: usize

The amount of space a value of the type always occupies. If IS_DYNAMIC is false, this is the total amount of heap memory occupied by the value. Otherwise this is a lower bound.

Required Methods

fn estimate_heap_size(&self) -> usize

Estimates the size of heap memory taken up by this value.

Does not include data on the stack, which is usually determined using mem::size_of.

Provided Methods

fn estimate_detailed_heap_size(&self) -> MemUsageNode

Create a tree of memory estimations.

Similar to estimate_heap_size, but the returned value is a tree that typically reports memory used by structs individually.

Requires the detailed feature to be enabled.

Implementations on Foreign Types

impl DataSize for Instant

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for i64

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2> DataSize for (T0, T1, T2)where T0: DataSize, T1: DataSize, T2: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<A> DataSize for SmallVec<A>where A: Array, A::Item: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for Box<str>

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Vec<T>where T: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for i16

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Box<[T]>where T: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Receiver<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize, T10: DataSize, T11: DataSize, T12: DataSize, T13: DataSize, T14: DataSize, T15: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize, T10: DataSize, T11: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for i128

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for u128

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for char

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for OsString

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<K, V> DataSize for BTreeMap<K, V>where K: DataSize, V: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T, E> DataSize for Result<T, E>where T: DataSize, E: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for SocketAddrV4

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for BTreeSet<T>where T: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T: ?Sized> DataSize for Arc<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize, T10: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for u32

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for ()

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Box<T>where T: DataSize,

const IS_DYNAMIC: bool = T::IS_DYNAMIC

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize, T10: DataSize, T11: DataSize, T12: DataSize, T13: DataSize, T14: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Receiver<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<'a, T> DataSize for Cow<'a, T>where T: 'a + ToOwned + ?Sized, <T as ToOwned>::Owned: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0> DataSize for (T0,)where T0: DataSize,

const IS_DYNAMIC: bool = T0::IS_DYNAMIC

const STATIC_HEAP_SIZE: usize = T0::STATIC_HEAP_SIZE

fn estimate_heap_size(&self) -> usize

impl DataSize for i32

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3> DataSize for (T0, T1, T2, T3)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for &T

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for JoinHandle<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6> DataSize for (T0, T1, T2, T3, T4, T5, T6)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize, T10: DataSize, T11: DataSize, T12: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for f32

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T: ?Sized> DataSize for Weak<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for PathBuf

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<K, V, S> DataSize for HashMap<K, V, S>where K: DataSize, V: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4> DataSize for (T0, T1, T2, T3, T4)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for VecDeque<T>where T: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for Ipv6Addr

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Sender<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for bool

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for Ipv4Addr

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for FakeClock

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for &mut T

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Option<T>where T: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for u8

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for u64

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T: ?Sized> DataSize for Weak<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T: DataSize> DataSize for Range<T>

const IS_DYNAMIC: bool = T::IS_DYNAMIC

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Sender<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for isize

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for SocketAddr

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for BinaryHeap<T>where T: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for String

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for u16

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T, S> DataSize for HashSet<T, S>where T: DataSize,

const IS_DYNAMIC: bool = true

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for AssertUnwindSafe<T>where T: DataSize,

const IS_DYNAMIC: bool = <T as DataSize>::IS_DYNAMIC

const STATIC_HEAP_SIZE: usize = <T as DataSize>::STATIC_HEAP_SIZE

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5> DataSize for (T0, T1, T2, T3, T4, T5)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for IpAddr

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for Duration

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for PhantomData<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T: ?Sized> DataSize for Rc<T>

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

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

const IS_DYNAMIC: bool = T::IS_DYNAMIC

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> DataSize for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13)where T0: DataSize, T1: DataSize, T2: DataSize, T3: DataSize, T4: DataSize, T5: DataSize, T6: DataSize, T7: DataSize, T8: DataSize, T9: DataSize, T10: DataSize, T11: DataSize, T12: DataSize, T13: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for SystemTime

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T0, T1> DataSize for (T0, T1)where T0: DataSize, T1: DataSize,

const IS_DYNAMIC: bool = _

const STATIC_HEAP_SIZE: usize = _

fn estimate_heap_size(&self) -> usize

impl DataSize for usize

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for i8

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl<T> DataSize for Reverse<T>where T: DataSize,

const IS_DYNAMIC: bool = <T as DataSize>::IS_DYNAMIC

const STATIC_HEAP_SIZE: usize = <T as DataSize>::STATIC_HEAP_SIZE

fn estimate_heap_size(&self) -> usize

impl DataSize for SocketAddrV6

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

impl DataSize for f64

const IS_DYNAMIC: bool = false

const STATIC_HEAP_SIZE: usize = 0usize

fn estimate_heap_size(&self) -> usize

Implementors