Struct SendBuffer 

pub struct SendBuffer { /* private fields */ }

An owned, writable “zero-copy” software bus message buffer.

This struct safely manages a memory buffer allocated directly from CFE’s internal pool. You can get a writable view of it using MessageMut::from() and then send it with zero memory copies.

If the buffer is dropped without being sent, it is automatically released back to the CFE pool, preventing memory leaks.

Implementations

impl SendBuffer

pub fn new(size: usize) -> Result<Self>

Allocates a new zero-copy send buffer of the specified size from the CFE SB pool.

pub fn send(self, is_origination: bool) -> Result<()>

Transmits the message in this buffer.

This consumes the SendBuffer, transferring ownership of the memory to CFE. After this call, the buffer is no longer accessible from Rust.

On failure, the caller still owns the buffer (state is unchanged) and the Drop impl will release it.

Arguments

• is_origination: Set to true to have CFE automatically fill in fields like sequence count and timestamp. Set to false when forwarding a message.

pub fn view(&mut self) -> MessageMut<'_>

Returns a read-only slice view of the buffer’s contents.

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

Returns the raw byte slice of the buffer’s contents.

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

Returns the raw mutable byte slice of the buffer’s contents.

Trait Implementations

impl Debug for SendBuffer

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

Formats the value using the given formatter.

impl Drop for SendBuffer

fn drop(&mut self)

Automatically releases the buffer back to the CFE pool if it hasn’t been sent.