Struct JitCodeCache 

pub struct JitCodeCache { /* private fields */ }

Cache of JIT-compiled function pointers, keyed by content hash.

Same blob hash = skip recompilation, reuse function pointer.

Tracks dependency edges so that when an inlined callee changes, all callers that embedded it can be invalidated.

Safety

The raw *const u8 pointers stored here point into Cranelift JITModule memory regions. Callers must ensure that the JITModule that produced a pointer outlives any use of that pointer through this cache.

Implementations

impl JitCodeCache

pub fn new() -> Self

Create an empty cache.

pub fn with_capacity(capacity: usize) -> Self

Create a cache pre-sized for capacity entries.

pub fn get(&self, hash: &FunctionHash) -> Option<*const u8>

Look up a cached native code pointer by content hash.

pub fn insert(&mut self, hash: FunctionHash, ptr: *const u8)

Insert a compiled function pointer for the given content hash.

Creates a minimal CacheEntry with no dependencies and zero version/epoch. If an entry with the same hash already exists it is overwritten.

pub fn insert_entry(&mut self, entry: CacheEntry)

Insert a cache entry with full dependency information.

Builds reverse-index edges so that invalidate_by_dependency() can find this entry when any of its dependencies change.

pub fn invalidate_by_dependency( &mut self, changed_hash: &FunctionHash, ) -> Vec<FunctionHash>

Invalidate all entries that depend on the given function hash.

Performs a transitive walk: if A depends on B and B depends on C, invalidating C will remove both B and A.

Returns the list of invalidated function hashes.

pub fn get_entry(&self, hash: &FunctionHash) -> Option<&CacheEntry>

Get a cache entry with full metadata.

pub fn contains(&self, hash: &FunctionHash) -> bool

Check whether a function with the given hash has been compiled.

pub fn len(&self) -> usize

Number of cached entries.

pub fn is_empty(&self) -> bool

Returns true if the cache is empty.

pub fn clear(&mut self)

Remove all entries from the cache.

This does not free the underlying native code memory (that is owned by the Cranelift JITModule).

Trait Implementations

impl Default for JitCodeCache

fn default() -> Self

Returns the “default value” for a type.

impl Send for JitCodeCache

impl Sync for JitCodeCache