Struct ThreadLocalArena 

pub struct ThreadLocalArena;

Thread-local BTreeMap-based arena.

This provides the lowest overhead for protection operations by eliminating RefCell borrow checking.

Trait Implementations

impl ThreadLocalArenaOps for ThreadLocalArena

type Map = BTreeMap<usize, Entry>

The map storage type used by this arena.

fn with_state<R, F: FnOnce(&mut ThreadLocalState<BTreeMap<usize, Entry>>) -> R>( f: F, ) -> R

Access the thread-local state.

unsafe fn init()

Initialize the arena with default capacity (called automatically on first use).

unsafe fn init_with_capacity(capacity: usize)

Initialize the arena with specific capacity.

unsafe fn protect(x: SEXP) -> SEXP

Protect a SEXP, incrementing its reference count.

unsafe fn unprotect(x: SEXP)

Unprotect a SEXP.

unsafe fn try_unprotect(x: SEXP) -> bool

Try to unprotect a SEXP.

unsafe fn protect_fast(x: SEXP) -> SEXP

Protect without checking initialization.

unsafe fn unprotect_fast(x: SEXP)

Unprotect without checking initialization.

unsafe fn try_unprotect_fast(x: SEXP) -> bool

Try to unprotect without checking initialization.

fn is_protected(x: SEXP) -> bool

Check if a SEXP is protected.

fn ref_count(x: SEXP) -> usize

Get reference count.

fn len() -> usize

Number of protected SEXPs.

fn is_empty() -> bool

Check if empty.

fn capacity() -> usize

Get capacity.

unsafe fn clear()

Clear all protections.