Trait GetSize

Source

pub trait GetSize: Sized {
    // Provided methods
    fn get_stack_size() -> usize { ... }
    fn get_heap_size(&self) -> usize { ... }
    fn get_heap_size_with_tracker<T: GetSizeTracker>(
        &self,
        tracker: T,
    ) -> (usize, T) { ... }
    fn get_size(&self) -> usize { ... }
    fn get_size_with_tracker<T: GetSizeTracker>(&self, tracker: T) -> (usize, T) { ... }
}

Expand description

Determine the size in bytes an object occupies inside RAM.

Provided Methods§

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fn get_stack_size() -> usize

Determines how may bytes this object occupies inside the stack.

The default implementation uses std::mem::size_of and should work for almost all types.

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fn get_heap_size(&self) -> usize

Determines how many bytes this object occupies inside the heap.

The default implementation simply delegates to get_heap_size_with_tracker with a noop tracker. This method is not meant to be implemented directly, and only exists for convenience.

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fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

Determines how many bytes this object occupies inside the heap while using a tracker.

The default implementation returns 0, assuming the object is fully allocated on the stack. It must be adjusted as appropriate for objects which hold data inside the heap.

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fn get_size(&self) -> usize

Determines the total size of the object.

The default implementation simply adds up the results of get_stack_size and get_heap_size and is not meant to be changed.

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fn get_size_with_tracker<T: GetSizeTracker>(&self, tracker: T) -> (usize, T)

Determines the total size of the object while using a tracker.

The default implementation simply adds up the results of get_stack_size and get_heap_size_with_tracker and is not meant to be changed.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

GetSize

Trait GetSize Copy item path

Provided Methods§

fn get_stack_size() -> usize

fn get_heap_size(&self) -> usize

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

fn get_size(&self) -> usize

fn get_size_with_tracker<T: GetSizeTracker>(&self, tracker: T) -> (usize, T)

Dyn Compatibility§

Implementations on Foreign Types§

impl GetSize for &str

impl GetSize for &CStr

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for &OsStr

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for &Path

impl GetSize for Ordering

impl GetSize for Infallible

impl GetSize for Ordering

impl GetSize for bool

impl GetSize for char

impl GetSize for f32

impl GetSize for f64

impl GetSize for i8

impl GetSize for i16

impl GetSize for i32

impl GetSize for i64

impl GetSize for i128

impl GetSize for isize

impl GetSize for u8

impl GetSize for u16

impl GetSize for u32

impl GetSize for u64

impl GetSize for u128

impl GetSize for ()

impl GetSize for usize

impl GetSize for Box<str>

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for CString

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for Rc<str>

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for String

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for Arc<str>

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for PhantomPinned

impl GetSize for RangeFull

impl GetSize for AtomicBool

impl GetSize for AtomicI8

impl GetSize for AtomicI16

impl GetSize for AtomicI32

impl GetSize for AtomicI64

impl GetSize for AtomicIsize

impl GetSize for AtomicU8

impl GetSize for AtomicU16

impl GetSize for AtomicU32

impl GetSize for AtomicU64

impl GetSize for AtomicUsize

impl GetSize for Duration

impl GetSize for OsString

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for DirBuilder

impl GetSize for DirEntry

impl GetSize for File

impl GetSize for FileType

impl GetSize for Metadata

impl GetSize for OpenOptions

impl GetSize for Permissions

impl GetSize for ReadDir

impl GetSize for PathBuf

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for Instant

impl GetSize for SystemTime

impl GetSize for Bytes

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for BytesMut

fn get_heap_size_with_tracker<T: GetSizeTracker>( &self, tracker: T, ) -> (usize, T)

impl GetSize for TzOffset

impl GetSize for NaiveDate

Trait GetSize

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

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

impl<K, V, H> GetSize for HashMap<K, V, H>
where K: GetSize + Eq + Hash, V: GetSize, H: BuildHasher,

impl<K, V, S> GetSize for IndexMap<K, V, S>
where K: GetSize, V: GetSize, S: BuildHasher,

impl<K, V, S: BuildHasher> GetSize for HashMap<K, V, S>
where K: GetSize, V: GetSize,

impl<T> GetSize for &[T]
where T: GetSize,

impl<T> GetSize for Cow<'_, T>
where T: ToOwned + ?Sized, T::Owned: GetSize,

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

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

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

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

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

impl<T> GetSize for LinkedList<T>
where T: GetSize,

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

impl<T> GetSize for Rc<[T]>
where T: GetSize,