Trait IoBufMut

pub unsafe trait IoBufMut: IoBuf + SetBufInit {
    // Required method
    fn as_buf_mut_ptr(&mut self) -> *mut u8;

    // Provided methods
    fn as_mut_slice(&mut self) -> &mut [MaybeUninit<u8>] { ... }
    unsafe fn as_io_slice_mut(&mut self) -> IoSliceMut { ... }
}

A mutable compio compatible buffer.

The IoBufMut trait is implemented by buffer types that can be passed to compio operations. Users will not need to use this trait directly.

Safety

Buffers passed to compio operations must reference a stable memory region. While the runtime holds ownership to a buffer, the pointer returned by as_buf_mut_ptr must remain valid even if the IoBufMut value is moved.

Required Methods

fn as_buf_mut_ptr(&mut self) -> *mut u8

Returns a raw mutable pointer to the vector’s buffer.

This method is to be used by the compio runtime and it is not expected for users to call it directly.

Provided Methods

fn as_mut_slice(&mut self) -> &mut [MaybeUninit<u8>]

Get the uninitialized part of the buffer.

unsafe fn as_io_slice_mut(&mut self) -> IoSliceMut

Create an IoSliceMut of the uninitialized part of the buffer.

Safety

The return slice will not live longer than self. It is static to provide convenience from writing self-referenced structure.

Implementations on Foreign Types

impl IoBufMut for BorrowedBuf<'static>

Available on crate feature read_buf only.

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl IoBufMut for BytesMut

Available on crate feature bytes only.

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl IoBufMut for [u8]

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl<A: Allocator + 'static> IoBufMut for Vec<u8, A>

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl<B: IoBufMut + ?Sized> IoBufMut for &'static mut B

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl<B: IoBufMut + ?Sized, A: Allocator + 'static> IoBufMut for Box<B, A>

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl<const N: usize> IoBufMut for ArrayVec<u8, N>

Available on crate feature arrayvec only.

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl<const N: usize> IoBufMut for SmallVec<[u8; N]>

where [u8; N]: Array<Item = u8>,

Available on crate feature smallvec only.

fn as_buf_mut_ptr(&mut self) -> *mut u8

impl<const N: usize> IoBufMut for [u8; N]

fn as_buf_mut_ptr(&mut self) -> *mut u8

Implementors

impl<T> IoBufMut for IndexedIter<T>

where T: IndexableMut + 'static, T::Output: IoBufMut,

impl<T: IoBufMut> IoBufMut for Slice<T>