Struct OnSetContext 

pub struct OnSetContext {
    pub a: usize,
    pub b: usize,
}

Two machine words of caller context, carried verbatim to an OnSetParameterFn.

TWO, not one, because of the consumer that drives this API: a C or C++ registration is a FUNCTION POINTER plus a user void*, and the shim needs both to reach the caller’s code. One word would force each wrapper to keep a static side table mapping an index back to the pair — a second, smaller registry with its own bound and its own exhaustion story, which is the class phase-426 spent six work items removing.

usize, not *mut c_void: a raw pointer in this struct would strip ParameterServer’s auto traits, and the store lives inside the executor. The C and C++ shims cast through it and say so.

Fields

a: usize

First word. The wrappers put the user’s void* context here, so a Rust caller with one pointer to carry uses this one and ignores b.

b: usize

Second word. The wrappers put the C function pointer here.

Implementations

impl OnSetContext

pub const fn new(a: usize) -> OnSetContext

One word of context; b is zero.

pub const fn pair(a: usize, b: usize) -> OnSetContext

Both words.

Trait Implementations

impl Clone for OnSetContext

fn clone(&self) -> OnSetContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OnSetContext

impl Debug for OnSetContext

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

Formats the value using the given formatter.

impl Default for OnSetContext

fn default() -> OnSetContext

Returns the “default value” for a type.

impl Eq for OnSetContext

impl PartialEq for OnSetContext

fn eq(&self, other: &OnSetContext) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for OnSetContext