RawTable::allocation_info #371
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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.
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We are implementing memory profiler for Rust.
We can approximate how much memory is occupied by
RawTableby replicating some logic ofRawTable, but it would be more correct/reliable ifRawTablejust exposed this information.RawTable::allocation_inforeturns just that.It returns both
Layoutand pointer to allocated memory.Pointer is helpful when using with jemalloc: the pointer can be passed to
malloc_usable_sizefunction to measure precisely not just how much memory is requested byRawTable, but also what is malloc padding for the allocation.