Struct Zallocator

pub struct Zallocator { /* private fields */ }

Amortizes the cost of small allocations by allocating memory in bigger chunks.

Implementations

impl Zallocator

pub const MAX_ALLOC: u64 = 1_073_741_824u64

The maximum size of an allocator

pub fn new(size: usize, tag: &'static str) -> Result<Self>

Creates an allocator starting with the given size.

pub fn get_tag(&self) -> &'static str

Get the tag of the allocator

pub fn set_tag(&self, tag: &'static str)

Set the tag for this allocator

pub fn reset(&self)

Reset the allocator

pub fn size(&self) -> usize

Returns the size of the allocations so far.

pub fn release(self)

Release would release the allocator.

pub fn allocate_aligned(&self, size: u64) -> Result<Buffer>

Allocate a buffer with according to size (well-aligned)

pub fn allocate_aligned_unchecked(&self, size: u64) -> Buffer

Allocate a buffer with according to size (well-aligned) without checking size

Panics

Size larger than 1 << 30.

pub fn allocate(&self, size: u64) -> Result<Buffer>

Allocate a buffer with according to size

pub fn allocate_unchecked(&self, size: u64) -> Buffer

Allocate a buffer with according to size without checking size.

Panics

Size larger than 1 << 30.

pub fn copy_from(&self, buf: impl AsRef<[u8]>) -> Result<Buffer>

Allocate a buffer with the same length of buf, and copy the contents of buf to the Buffer.

pub fn truncate(&self, max: u64)

Truncate the allocator to new size.

pub fn allocated(&self) -> u64

Returns how many bytes are allocated

Trait Implementations

impl Clone for Zallocator

fn clone(&self) -> Zallocator

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Zallocator

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

Formats the value using the given formatter.

impl Display for Zallocator

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

Formats the value using the given formatter.