Struct RawIoBuf 

pub struct RawIoBuf { /* private fields */ }

Raw I/O buffer (Non-owning, Copy) 原始 I/O 缓冲区（不持有所有权，可复制）

For Buffer Pool Arena mode. Implements Copy for ergonomic async IO. 用于 Buffer Pool Arena 模式，实现 Copy 便于异步 IO

Implementations

impl RawIoBuf

pub const unsafe fn new(ptr: *mut u8, cap: usize) -> Self

Create new raw buffer wrapper

Safety

ptr must be valid and aligned for Direct I/O

pub const fn with_len(self, len: usize) -> Self

Set length (chainable) / 设置长度（链式调用）

pub const unsafe fn from_raw_parts( ptr: NonNull<u8>, len: usize, cap: usize, ) -> Self

Create from raw parts / 从原始部分创建

Safety

ptr must be valid and aligned for Direct I/O

pub fn from_slice(slice: &mut [u8]) -> Self

Create from mutable slice / 从可变切片创建

pub unsafe fn slice(self, offset: usize, len: usize) -> Self

Slice for reading (len = 0, waiting for IO to fill) 切片用于读取（len = 0，等待 IO 填充）

Safety

1. offset + len must not exceed capacity
2. offset must be aligned for Direct I/O

pub unsafe fn slice_data(self, offset: usize, len: usize) -> Self

Slice for writing (len = cap, contains data) 切片用于写入（len = cap，包含待写数据）

Safety

1. offset + len must not exceed capacity
2. offset must be aligned for Direct I/O

pub unsafe fn slice_unchecked(self, offset: usize, len: usize) -> Self

Slice unchecked (extreme performance) / 无检查切片（极致性能）

Safety

Caller MUST ensure bounds and alignment

pub const fn len(&self) -> usize

pub const fn cap(&self) -> usize

pub const fn is_empty(&self) -> bool

pub const fn as_ptr(&self) -> *const u8

pub const fn as_mut_ptr(&self) -> *mut u8

pub fn as_slice(&self) -> &[u8]

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

pub unsafe fn set_len(&mut self, len: usize)

Set length

Safety

Caller must ensure data is initialized up to len

Trait Implementations

impl Clone for RawIoBuf

fn clone(&self) -> RawIoBuf

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RawIoBuf

fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult

Formats the value using the given formatter.

impl IoBuf for RawIoBuf

fn as_buf_ptr(&self) -> *const u8

Returns a raw pointer to the vector’s buffer.

fn buf_len(&self) -> usize

Number of initialized bytes.

fn buf_capacity(&self) -> usize

Total size of the buffer, including uninitialized memory, if any.

fn as_slice(&self) -> &[u8]

Get the initialized part of the buffer.

unsafe fn as_io_slice(&self) -> IoSlice

Create an IoSlice of this buffer.

unsafe fn as_io_buffer(&self) -> IoBuffer

Create an IoBuffer of this buffer.

fn slice(self, range: impl RangeBounds<usize>) -> Slice<Self>

where Self: Sized,

Returns a view of the buffer with the specified range.

fn uninit(self) -> Uninit<Self>

where Self: Sized,

Returns an Uninit, which is a Slice that only exposes uninitialized bytes.

fn filled(&self) -> bool

Indicate whether the buffer has been filled (uninit portion is empty)

impl IoBufMut for RawIoBuf

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

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

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.

impl SetBufInit for RawIoBuf

unsafe fn set_buf_init(&mut self, len: usize)

Set the buffer length. If len is less than the current length, nothing should happen.

impl Copy for RawIoBuf

impl Send for RawIoBuf

impl Sync for RawIoBuf