Struct DummyAllocator 

pub struct DummyAllocator;

A dummy allocator.

Allocation will always fail by returning a null pointer. Deallocation will always do nothing.

Example

You may use it as the global allocator like so:

use dummy_alloc::DummyAllocator;

#[global_allocator]
static GLOBAL: DummyAllocator = DummyAllocator;

See the alloc documentation for more information.

Trait Implementations

impl Clone for DummyAllocator

fn clone(&self) -> DummyAllocator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DummyAllocator

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

Formats the value using the given formatter.

impl Default for DummyAllocator

fn default() -> DummyAllocator

Returns the “default value” for a type.

impl GlobalAlloc for DummyAllocator

unsafe fn alloc(&self, _layout: Layout) -> *mut u8

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, _layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc( &self, _ptr: *mut u8, _layout: Layout, _new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout.

impl Copy for DummyAllocator