Struct FixedBlockTestMemory 

pub struct FixedBlockTestMemory { /* private fields */ }

A memory provider that cuts the memory allocation into blocks of fixed size and delegates to the Rust global allocator for allocating those blocks.

This is meant for test scenarios where a specific memory block size is important.

This memory provider is a simple implementation that does not perform any pooling or performance optimization, so should not be used in real code.

Implementations

impl FixedBlockTestMemory

pub fn new(block_size: NonZero<BlockSize>) -> Self

Creates a new instance of the memory provider.

pub fn reserve(&self, min_bytes: usize) -> BytesBuf

Reserves at least min_bytes bytes of memory capacity.

Returns an empty BytesBuf that can be used to fill the reserved memory with data.

The memory provider may provide more memory than requested.

The memory reservation request will always be fulfilled, obtaining more memory from the operating system if necessary.

Zero-sized reservations

Reserving zero bytes of memory is a valid operation and will return a BytesBuf with zero or more bytes of capacity.

Panics

May panic if the operating system runs out of memory.

Trait Implementations

impl Clone for FixedBlockTestMemory

fn clone(&self) -> FixedBlockTestMemory

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FixedBlockTestMemory

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

Formats the value using the given formatter.

impl Memory for FixedBlockTestMemory

fn reserve(&self, min_bytes: usize) -> BytesBuf

Reserves at least min_bytes bytes of memory capacity.