Struct AllocatorApi2V03Compat 

#[repr(transparent)]
pub struct AllocatorApi2V03Compat<A: ?Sized>(pub A);

Available on crate feature allocator-api2-03 only.

Wraps an allocator_api2::alloc::Allocator to implement bump_scope::alloc::Allocator and vice versa.

Example

use allocator_api2::alloc::Allocator;

use bump_scope::{Bump, alloc::compat::AllocatorApi2V03Compat};

#[derive(Clone)]
struct MyAllocatorApi2Allocator;

unsafe impl Allocator for MyAllocatorApi2Allocator {
    ...
}

let bump: Bump<_> = Bump::new_in(AllocatorApi2V03Compat(MyAllocatorApi2Allocator));

Tuple Fields

0: A

Implementations

impl<A: ?Sized> AllocatorApi2V03Compat<A>

pub fn from_ref(allocator: &A) -> &Self

pub fn from_mut(allocator: &mut A) -> &mut Self

Trait Implementations

impl<A: ?Sized + Allocator> Allocator for AllocatorApi2V03Compat<A>

fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, CrateAllocError>

Attempts to allocate a block of memory.

unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout)

Deallocates the memory referenced by ptr.

fn allocate_zeroed( &self, layout: Layout, ) -> Result<NonNull<[u8]>, CrateAllocError>

Behaves like allocate, but also ensures that the returned memory is zero-initialized.

unsafe fn grow( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, CrateAllocError>

Attempts to extend the memory block.

unsafe fn grow_zeroed( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, CrateAllocError>

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

unsafe fn shrink( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, CrateAllocError>

Attempts to shrink the memory block.

fn by_ref(&self) -> &Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Allocator.

impl<A: ?Sized + CrateAllocator> Allocator for AllocatorApi2V03Compat<A>

fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>

Attempts to allocate a block of memory.

unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout)

Deallocates the memory referenced by ptr.

fn allocate_zeroed(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>

Behaves like allocate, but also ensures that the returned memory is zero-initialized.

unsafe fn grow( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

Attempts to extend the memory block.

unsafe fn grow_zeroed( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

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

unsafe fn shrink( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

Attempts to shrink the memory block.

fn by_ref(&self) -> &Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Allocator.

impl<A: Clone + ?Sized> Clone for AllocatorApi2V03Compat<A>

fn clone(&self) -> AllocatorApi2V03Compat<A>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<A: Debug + ?Sized> Debug for AllocatorApi2V03Compat<A>

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

Formats the value using the given formatter.

impl<A: Default + ?Sized> Default for AllocatorApi2V03Compat<A>

fn default() -> AllocatorApi2V03Compat<A>

Returns the “default value” for a type.