Trait compio_buf::IoBufMut
source · pub unsafe trait IoBufMut: IoBuf + SetBufInit {
// Required method
fn as_buf_mut_ptr(&mut self) -> *mut u8;
// Provided method
fn as_uninit_slice(&mut self) -> &mut [MaybeUninit<u8>] { ... }
}Expand description
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§
sourcefn as_buf_mut_ptr(&mut self) -> *mut u8
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.
The implementation must ensure that, while the compio runtime
owns the value, the pointer returned does not change.
Provided Methods§
sourcefn as_uninit_slice(&mut self) -> &mut [MaybeUninit<u8>]
fn as_uninit_slice(&mut self) -> &mut [MaybeUninit<u8>]
Get the uninitialized part of the buffer.