Struct fixed_bump::Rc

pub struct Rc<Bump>(pub Rc<Bump>);

A wrapper around Rc.

This type exists mainly so that Allocator can be implemented for it:

use fixed_bump::Bump;
let rc = std::rc::Rc::new(Bump::<[u32; 16]>::new());
// Error: `std::rc::Rc<Bump<...>>` doesn't implement `Allocator`:
//let b = Box::new_in(1_u32, rc);
// Compiles: `fixed_bump::Rc<Bump<...>>` implements `Allocator`:
let b = Box::new_in(1_u32, fixed_bump::Rc(rc));

Tuple Fields

0: Rc<Bump>

Implementations

impl<Bump> Rc<Bump>

pub fn new(bump: Bump) -> Self

Creates a new Rc. This simply returns Rc(rc::Rc::new(bump)).

Examples found in repository

src/rc.rs (line 59)

    fn default() -> Self {
        Self::new(Bump::default())
    }

Trait Implementations

impl<Bump: Allocator> Allocator for Rc<Bump>

Available on crate features allocator_api or allocator-fallback only.

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

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to allocate a block of memory.

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

🔬This is a nightly-only experimental API. (allocator_api)

Deallocates the memory referenced by ptr.

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

🔬This is a nightly-only experimental API. (allocator_api)

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>

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to extend the memory block.

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

🔬This is a nightly-only experimental API. (allocator_api)

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>

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to shrink the memory block.

fn by_ref(&self) -> &Selfwhere
    Self: Sized,

🔬This is a nightly-only experimental API. (allocator_api)

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

impl<Bump> Clone for Rc<Bump>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Bump: Default> Default for Rc<Bump>

fn default() -> Self

Returns the “default value” for a type.

impl<Bump> Deref for Rc<Bump>

type Target = Bump

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.