Trait Allocator

pub unsafe trait Allocator {
    // Required methods
    fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>;
    unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout);

    // Provided methods
    fn allocate_zeroed(
        &self,
        layout: Layout,
    ) -> Result<NonNull<[u8]>, AllocError> { ... }
    unsafe fn grow(
        &self,
        ptr: NonNull<u8>,
        old_layout: Layout,
        new_layout: Layout,
    ) -> Result<NonNull<[u8]>, AllocError> { ... }
    unsafe fn grow_zeroed(
        &self,
        ptr: NonNull<u8>,
        old_layout: Layout,
        new_layout: Layout,
    ) -> Result<NonNull<[u8]>, AllocError> { ... }
    unsafe fn shrink(
        &self,
        ptr: NonNull<u8>,
        old_layout: Layout,
        new_layout: Layout,
    ) -> Result<NonNull<[u8]>, AllocError> { ... }
    fn by_ref(&self) -> &Self
       where Self: Sized { ... }
}

A fallback for alloc::alloc::Allocator, which is currently unstable.

Safety

See alloc::alloc::Allocator.

Required Methods

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

See alloc::alloc::Allocator::allocate.

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

See alloc::alloc::Allocator::deallocate.

Safety

See alloc::alloc::Allocator::deallocate.

Provided Methods

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

See alloc::alloc::Allocator::allocate_zeroed.

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

See alloc::alloc::Allocator::grow.

Safety

See alloc::alloc::Allocator::grow.

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

See alloc::alloc::Allocator::grow_zeroed.

Safety

See alloc::alloc::Allocator::grow_zeroed.

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

See alloc::alloc::Allocator::shrink.

Safety

See alloc::alloc::Allocator::shrink.

fn by_ref(&self) -> &Self

where Self: Sized,

See alloc::alloc::Allocator::by_ref.

Implementations on Foreign Types

impl<A> Allocator for &A

where A: Allocator + ?Sized,

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

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

Implementors

impl Allocator for Global