The boxing-arena
crate provides a very simply reuse of Box
allocation by
keeping a vector of reusable Box
allocations that can be used when wanting to
wrap a value in Box
.
It would be sometimes easier to introduce boxing-arena
in code bases where
Box
is already used extensively than to use some other arena crate that
affects type and life-time semantics more drastically.
Basic usage demonstration:
// Prepare a long-lived arena:
let mut ba = new;
// ... per allocation ... :
// Instead of using `Box::new` directly, we do:
let boxed_big_value = ba.rebox;
// Instead of letting Rust drop and deallocate the Box, we do:
ba.unbox;