Struct PageAlignedAllocator 

pub struct PageAlignedAllocator;

Available on crate feature protected only.

Custom page-aligned allocator implementation. Creates blocks of page-aligned heap-allocated memory regions, with no-access pages before and after the allocated region of memory. Allocations whose requested alignment does not divide the host page size are rejected.

Trait Implementations

impl Allocator for PageAlignedAllocator

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

Safety

ptr must be a user-region pointer previously returned by this allocator’s allocate method with the same layout.

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

Attempts to allocate a block of memory.

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.

impl Clone for PageAlignedAllocator

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.