get-size2 0.11.1

Determine the size in bytes an object occupies inside RAM.
Documentation 
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use crate::{GetSize, GetSizeTracker};

impl GetSize for arcstr::ArcStr {
    fn get_heap_size_with_tracker<T: GetSizeTracker>(&self, mut tracker: T) -> (usize, T) {
        // Non-static strings are never empty, so the data pointer uniquely identifies the allocation.
        if Self::is_static(self) || !tracker.track(self.as_ptr()) {
            return (0, tracker);
        }

        // The allocation holds a length/flags word and a strong count in front of the bytes.
        (2 * size_of::<usize>() + self.len(), tracker)
    }
}

impl GetSize for arcstr::Substr {
    fn get_heap_size_with_tracker<T: GetSizeTracker>(&self, tracker: T) -> (usize, T) {
        // A substring shares ownership of the entire parent allocation.
        self.parent().get_heap_size_with_tracker(tracker)
    }
}