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Diffstat (limited to 'tvix/eval/src/value')
-rw-r--r-- | tvix/eval/src/value/thunk.rs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tvix/eval/src/value/thunk.rs b/tvix/eval/src/value/thunk.rs index 1be3370b2377..1c7ed615527c 100644 --- a/tvix/eval/src/value/thunk.rs +++ b/tvix/eval/src/value/thunk.rs @@ -488,3 +488,14 @@ impl ThunkSet { self.0.insert(ptr) } } + +#[derive(Default, Clone)] +pub struct SharedThunkSet(Rc<RefCell<ThunkSet>>); + +impl SharedThunkSet { + /// Check whether the given thunk has already been seen. Will mark the thunk + /// as seen otherwise. + pub fn insert(&self, thunk: &Thunk) -> bool { + self.0.borrow_mut().insert(thunk) + } +} |