get-size2

This repo is a fork of get-size, as it is not maintained anymore. The original repo can be found here

This repo contains two crates: get-size2 and get-size-derive2.

get-size2

Determine the size in bytes an object occupies inside RAM.

Tracking shared ownership

To avoid double-counting shared ownership (e.g. Rc, Arc), use a tracker:

use get_size2::{GetSize, StandardTracker};

fn main() {
  let value = std::sync::Arc::new(String::from("hello"));
  let (heap_size, _tracker) = value.get_heap_size_with_tracker(StandardTracker::new());
  assert_eq!(heap_size, std::mem::size_of::<String>() + 5);
}

get-size-derive2

The derive macro will provide a custom implementation of the [get_heap_size] method, which will simply call [get_heap_size] on all contained values and add the values up. This implies that by default all values contained in the struct or enum must implement the [GetSize] trait themselves.