Commits on Nov 3, 2022

1. RawTable::allocation_info …

   We are implementing memory profiler for Rust.
   
   We can approximate how much memory is occupied by `RawTable` by
   replicating some logic of `RawTable`, but it would be more
   correct/reliable if `RawTable` just exposed this information.
   
   `RawTable::allocation_info` returns just that.
   
   It returns both `Layout` and pointer to allocated memory.
   
   Pointer is helpful when using with jemalloc: the pointer can be
   passed to `malloc_usable_size` function to measure precisely not
   just how much memory is requested by `RawTable`, but also what is
   malloc padding for the allocation.

   

   stepancheg committed Nov 3, 2022
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