Struct NullJitBackend 

pub struct NullJitBackend;

No-op backend installed by crate::vm::Vm::new_minimal in luna-core. Both calls report “nothing compiled” so the interp dispatcher always takes the standard path. Embedders who want a real JIT either depend on the luna crate (whose Vm::new_minimal_with_jit swaps in CraneliftBackend) or write their own IntChunkCompiler / TraceCompiler implementation.

Trait Implementations

impl Clone for NullJitBackend

fn clone(&self) -> NullJitBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NullJitBackend

impl Debug for NullJitBackend

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

Formats the value using the given formatter.

impl Default for NullJitBackend

fn default() -> NullJitBackend

Returns the “default value” for a type.

impl IntChunkCompiler for NullJitBackend

fn try_compile( &self, _: &mut dyn JitStorage, _: Gc<Proto>, _: bool, _: bool, ) -> CompileResult

Attempt to compile proto. Returns CompileResult::Compiled on a whitelist hit or CompileResult::Skipped when the body is outside the JIT’s supported shape.

fn enter(&self, _: *mut Vm, _: Option<Gc<LuaClosure>>) -> JitVmGuard

Install the active Vm + closure pointer into the JIT helpers’ thread-local slots; the returned guard restores state on drop. For NullJitBackend this is a no-op (helpers never fire because nothing compiled).

impl TraceCompiler for NullJitBackend

fn try_compile_trace( &self, _: &mut dyn JitStorage, _: &TraceRecord, _: CompileOptions, ) -> Option<CompiledTrace>

Attempt to lower record into native code under opts. Returns None if the lowerer bailed at any checkpoint.

fn last_compile_checkpoint(&self) -> &'static str

Name of the lowerer’s last-reached checkpoint (diagnostic; lets the recorder bucket failures by phase).