26 lines
867 B
OCaml
26 lines
867 B
OCaml
(** The result is the size given in word.
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The word size in octet can be found with (Sys.word_size / 8).
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(The size of all the datas in OCaml is at least one word, even chars and bools.)
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*)
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let sizeof v =
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let rec rec_size d r =
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if List.memq r d then (1, d) else
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if not(Obj.is_block r) then (1, r::d) else
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if (Obj.tag r) = (Obj.double_tag) then (2, r::d) else
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if (Obj.tag r) = (Obj.string_tag) then (Obj.size r, r::d) else
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if (Obj.tag r) = (Obj.object_tag) ||
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(Obj.tag r) = (Obj.closure_tag)
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then invalid_arg "please only provide datas"
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else
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let len = Obj.size r in
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let rec aux d sum i =
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if i >= len then (sum, r::d) else
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let this = Obj.field r i in
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let this_size, d = rec_size d this in
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aux d (sum + this_size) (i+1)
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in
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aux d (1) 0
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in
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fst(rec_size [] (Obj.repr v))
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;;
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