Struct Bump 

pub struct Bump { /* private fields */ }

Fixed-capacity bump-pointer arena.

Implementations

impl Bump

pub fn new() -> Self

New empty arena with a 4 KiB chunk.

pub fn with_capacity(capacity: usize) -> Self

New arena, pre-allocating a single chunk of capacity bytes (promoted to a 64-byte floor and 16-byte alignment).

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

Allocate a Copy value. Panics if the arena is out of room.

pub fn try_alloc_copy<T: Copy>(&mut self, value: T) -> Option<&mut T>

Fallible alloc. Returns None if the arena can’t fit the value at its natural alignment.

pub fn alloc_raw(&mut self, layout: Layout) -> *mut u8

Allocate layout.size() bytes aligned to layout.align(). Panics if the request doesn’t fit.

pub fn try_alloc_raw(&mut self, layout: Layout) -> Option<*mut u8>

Fallible raw alloc. Returns None if the request doesn’t fit.

pub fn reset(&mut self)

Rewind to empty. The buffer is retained for reuse.

pub fn used(&self) -> usize

Bytes used so far in the current chunk.

pub fn capacity(&self) -> usize

Total capacity of the single backing chunk.

pub fn total_capacity(&self) -> usize

Backwards-compatible alias for [capacity].

Trait Implementations

impl Default for Bump

fn default() -> Self

Returns the “default value” for a type.

impl Drop for Bump

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.