Function live_bytes_in_last_gc

pub fn live_bytes_in_last_gc<VM: VMBinding>(
    mmtk: &MMTK<VM>,
) -> HashMap<&'static str, LiveBytesStats>

Return a hash map for live bytes statistics in the last GC for each space.

MMTk usually accounts for memory in pages by each space. This is a special method that we count the size of every live object in a GC, and sum up the total bytes. We provide this method so users can use crate::LiveBytesStats to know if the space is fragmented. The value returned by this method is only updated when we finish tracing in a GC. A recommended timing to call this method is at the end of a GC (e.g. when the runtime is about to resume threads).