Struct composable_allocators::stacked::Stacked

pub struct Stacked<P: Params> { /* private fields */ }

Implementations

impl Stacked<RtParams>

pub fn from_static_slice(buf: &'static mut [MaybeUninit<u8>]) -> Self

impl<const BUF_LEN: usize> Stacked<CtParams<BUF_LEN>>

pub fn from_static_array(buf: &'static mut [MaybeUninit<u8>; BUF_LEN]) -> Self

impl<P: Params> Stacked<P>

pub unsafe fn with_params<T>(
    params: P,
    buf_ptr: NonNull<MaybeUninit<u8>>,
    f: impl for<'a> FnOnce(&'a Stacked<P>) -> T
) -> T

Safety

buf_ptr should be a valid pointer to a slice with params.buf_len() bytes length.

Arguments should satisfy (isize::MAX as usize) - params.buf_len() >= buf_ptr as usize

Trait Implementations

impl<P: Params> Allocator for Stacked<P>

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.

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 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 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_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.

fn by_ref(&self) -> &Self

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

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

impl<P: Params> Drop for Stacked<P>

fn drop(&mut self)

Executes the destructor for this type.

impl<P: Params> Fallbackable for Stacked<P>

unsafe fn has_allocated(&self, ptr: NonNull<u8>, _layout: Layout) -> bool

Safety

fn allows_fallback(&self, _layout: Layout) -> bool

impl<P: Params> NonUnwinding for Stacked<P>