Struct Arena 

pub struct Arena { /* private fields */ }

Pre-allocated memory arena for graph execution.

Implementations

impl Arena

pub fn from_plan(plan: MemoryPlan) -> Self

Allocate arena from a memory plan.

pub fn size(&self) -> usize

Total arena size in bytes.

pub fn slice_mut(&mut self, id: NodeId) -> &mut [f32]

Get a mutable f32 slice for a node’s buffer.

Panics

Panics if the node has no buffer assignment.

pub fn slice(&self, id: NodeId) -> &[f32]

Get a read-only f32 slice for a node’s buffer.

pub fn slice_mut_f64(&mut self, id: NodeId) -> &mut [f64]

Get a mutable f64 slice for a node’s buffer.

Panics

Panics if the node has no buffer assignment, or if the slot’s byte size is not 8-aligned.

pub fn slice_f64(&self, id: NodeId) -> &[f64]

Get a read-only f64 slice for a node’s buffer.

pub fn has_buffer(&self, id: NodeId) -> bool

Check if a node has a buffer assignment.

pub fn raw_ptr(&self, id: NodeId) -> (*mut f32, usize)

Get a raw pointer + length for a node’s buffer. SAFETY: caller must ensure no aliasing writes to the same buffer.

pub fn schedule(&self) -> &[NodeId]

The execution schedule from the memory plan.

pub fn byte_offset(&self, id: NodeId) -> usize

Byte offset of a node’s buffer within the arena.

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

Raw mutable access to the arena buffer (for thunk executor).

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

Read-only access to the arena buffer (for typed reads).

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

Raw pointer to arena start (for zero-copy output reads).

Trait Implementations

impl Clone for Arena

fn clone(&self) -> Arena

Returns a duplicate of the value.

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

Performs copy-assignment from source.