Struct BumpAllocator 

pub struct BumpAllocator { /* private fields */ }

A fast bump allocator for temporary allocations.

Allocates memory by simply incrementing a pointer. All allocated memory is freed at once when the allocator is reset or dropped.

This allocator is not thread-safe and should only be used from a single thread.

Implementations

impl BumpAllocator

pub fn new() -> Self

Creates a new bump allocator.

pub fn with_capacity(capacity: usize) -> Self

Creates a new bump allocator with the given initial capacity.

pub fn alloc<T>(&self, value: T) -> &mut T

Allocates memory for a value of type T and initializes it.

pub fn alloc_slice_copy<T: Copy>(&self, values: &[T]) -> &mut [T]

Allocates memory for a slice and copies the values.

pub fn alloc_slice_clone<T: Clone>(&self, values: &[T]) -> &mut [T]

Allocates memory for a slice and clones the values.

pub fn alloc_str(&self, s: &str) -> &mut str

Allocates memory for a string and returns a mutable reference.

pub fn alloc_layout(&self, layout: Layout) -> NonNull<u8>

Allocates raw bytes with the given layout.

pub fn reset(&mut self)

Resets the allocator, freeing all allocated memory.

This is very fast - it just resets the internal pointer.

pub fn allocated_bytes(&self) -> usize

Returns the number of bytes currently allocated.

pub fn allocation_count(&self) -> usize

Returns the number of allocations made.

pub fn chunk_count(&mut self) -> usize

Returns the number of chunks in use.

Trait Implementations

impl Default for BumpAllocator

fn default() -> Self

Returns the “default value” for a type.