Struct webrender::util::Preallocator

pub struct Preallocator {
    size: usize,
}

Record the size of a data structure to preallocate a similar size at the next frame and avoid growing it too many time.

Fields

size: usize

Implementations

impl Preallocator

pub fn new(initial_size: usize) -> Self

pub fn record_vec<T>(&mut self, vec: &Vec<T>)

Record the size of a vector to preallocate it the next frame.

pub fn preallocation_size(&self) -> usize

The size that we’ll preallocate the vector with.

pub fn preallocate_vec<T>(&self, vec: &mut Vec<T>)

Preallocate vector storage.

The preallocated amount depends on the length recorded in the last record_vec call.

Trait Implementations

impl Clone for Preallocator

fn clone(&self) -> Preallocator

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Preallocator

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

Formats the value using the given formatter.

impl Default for Preallocator

fn default() -> Self

Returns the “default value” for a type.

impl Copy for Preallocator