[erlang-questions] Dynamically generated atoms get reused if they are the same?
Mon Nov 5 23:41:02 CET 2007
2007/11/5, nindeu@REDACTED <nindeu@REDACTED>:
> According to http://www.erlang.org/doc/efficiency_guide/bif.html#6.1 atoms do not get garbage collected. Meaning if you constantly produce atoms by using list_to_atom/1 you sooner or later will run out of space for them.
> Now I just wrote a small test program which indicates that as long as you produce the same atom, it will not take up additional space:
> atomTest() ->
> NewAtom = list_to_atom("itsme"),
> io:format("New memory size: ~p, Atoms used: ~p~n",
> [erlang:memory(atom), erlang:memory(atom_used)]),
> register(NewAtom, self()),
> after 1000 ->
> So, can anyone confirm, is it correct that dynamically generated Atoms are of no concern as long as you do not produce too many _different_ ones?
> Thank you!
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