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lib/live_debugger/utils/memory.ex
defmodule LiveDebugger.Utils.Memory do
@moduledoc """
Utility functions for measuring memory usage and size of data structures.
These functions provide only a good approximation
"""
@doc """
Returns the memory size of an ETS table in bytes.
"""
@spec table_size(table :: :ets.table()) :: non_neg_integer()
def table_size(table) do
case :ets.info(table, :memory) do
size when is_integer(size) ->
size * :erlang.system_info(:wordsize)
_ ->
0
end
end
@doc """
Returns the approximate size of an elixir term in bytes.
"""
@spec term_size(term :: term()) :: non_neg_integer()
def term_size(term) do
term |> :erlang.term_to_binary() |> byte_size()
end
end