From 641e18ccac9e5f346dcac51f65385f8656bcdce1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jos=C3=A9=20Valim?= Date: Wed, 8 May 2013 16:37:28 -0600 Subject: Improve erl_lint performance The default_types() in erl_lint returned a dictionary with all default types. However, calculating this dict was expensive and we actually didn't use the default values in this dictionary. This patch replaces the dictionary use for one function that checks if the type is a default type or not, and remove the bits that checked explicitly for those default types when iterating the dictionary. --- lib/stdlib/src/erl_lint.erl | 134 +++++++++++++++++++++----------------------- 1 file changed, 63 insertions(+), 71 deletions(-) (limited to 'lib') diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl index 68a8534f15..b37ee5066c 100644 --- a/lib/stdlib/src/erl_lint.erl +++ b/lib/stdlib/src/erl_lint.erl @@ -522,8 +522,7 @@ start(File, Opts) -> warn_format = value_option(warn_format, 1, warn_format, 1, nowarn_format, 0, Opts), enabled_warnings = Enabled, - file = File, - types = default_types() + file = File }. %% is_warn_enabled(Category, St) -> boolean(). @@ -1007,7 +1006,7 @@ check_undefined_functions(#lint{called=Called0,defined=Def0}=St0) -> check_undefined_types(#lint{usage=Usage,types=Def}=St0) -> Used = Usage#usage.used_types, UTAs = dict:fetch_keys(Used), - Undef = [{TA,dict:fetch(TA, Used)} || TA <- UTAs, not dict:is_key(TA, Def)], + Undef = [{TA,dict:fetch(TA, Used)} || TA <- UTAs, not dict:is_key(TA, Def), not is_default_type(TA)], foldl(fun ({TA,L}, St) -> add_error(L, {undefined_type,TA}, St) end, St0, Undef). @@ -2440,7 +2439,7 @@ type_def(Attr, Line, TypeName, ProtoType, Args, St0) -> end, case (dict:is_key(TypePair, TypeDefs) orelse is_var_arity_type(TypeName)) of true -> - case dict:is_key(TypePair, default_types()) of + case is_default_type(TypePair) of true -> case is_newly_introduced_builtin_type(TypePair) of %% allow some types just for bootstrapping @@ -2488,8 +2487,8 @@ check_type({paren_type, _L, [Type]}, SeenVars, St) -> check_type({remote_type, L, [{atom, _, Mod}, {atom, _, Name}, Args]}, SeenVars, #lint{module=CurrentMod} = St) -> St1 = - case (dict:is_key({Name, length(Args)}, default_types()) - orelse is_var_arity_type(Name)) of + case is_default_type({Name, length(Args)}) + orelse is_var_arity_type(Name) of true -> add_error(L, {imported_predefined_type, Name}, St); false -> St end, @@ -2606,63 +2605,62 @@ is_var_arity_type(union) -> true; is_var_arity_type(record) -> true; is_var_arity_type(_) -> false. -default_types() -> - DefTypes = [{any, 0}, - {arity, 0}, - {array, 0}, - {atom, 0}, - {atom, 1}, - {binary, 0}, - {binary, 2}, - {bitstring, 0}, - {bool, 0}, - {boolean, 0}, - {byte, 0}, - {char, 0}, - {dict, 0}, - {digraph, 0}, - {float, 0}, - {'fun', 0}, - {'fun', 2}, - {function, 0}, - {gb_set, 0}, - {gb_tree, 0}, - {identifier, 0}, - {integer, 0}, - {integer, 1}, - {iodata, 0}, - {iolist, 0}, - {list, 0}, - {list, 1}, - {maybe_improper_list, 0}, - {maybe_improper_list, 2}, - {mfa, 0}, - {module, 0}, - {neg_integer, 0}, - {nil, 0}, - {no_return, 0}, - {node, 0}, - {non_neg_integer, 0}, - {none, 0}, - {nonempty_list, 0}, - {nonempty_list, 1}, - {nonempty_improper_list, 2}, - {nonempty_maybe_improper_list, 0}, - {nonempty_maybe_improper_list, 2}, - {nonempty_string, 0}, - {number, 0}, - {pid, 0}, - {port, 0}, - {pos_integer, 0}, - {queue, 0}, - {range, 2}, - {reference, 0}, - {set, 0}, - {string, 0}, - {term, 0}, - {timeout, 0}, - {var, 1}], - dict:from_list([{T, -1} || T <- DefTypes]). +is_default_type({any, 0}) -> true; +is_default_type({arity, 0}) -> true; +is_default_type({array, 0}) -> true; +is_default_type({atom, 0}) -> true; +is_default_type({atom, 1}) -> true; +is_default_type({binary, 0}) -> true; +is_default_type({binary, 2}) -> true; +is_default_type({bitstring, 0}) -> true; +is_default_type({bool, 0}) -> true; +is_default_type({boolean, 0}) -> true; +is_default_type({byte, 0}) -> true; +is_default_type({char, 0}) -> true; +is_default_type({dict, 0}) -> true; +is_default_type({digraph, 0}) -> true; +is_default_type({float, 0}) -> true; +is_default_type({'fun', 0}) -> true; +is_default_type({'fun', 2}) -> true; +is_default_type({function, 0}) -> true; +is_default_type({gb_set, 0}) -> true; +is_default_type({gb_tree, 0}) -> true; +is_default_type({identifier, 0}) -> true; +is_default_type({integer, 0}) -> true; +is_default_type({integer, 1}) -> true; +is_default_type({iodata, 0}) -> true; +is_default_type({iolist, 0}) -> true; +is_default_type({list, 0}) -> true; +is_default_type({list, 1}) -> true; +is_default_type({maybe_improper_list, 0}) -> true; +is_default_type({maybe_improper_list, 2}) -> true; +is_default_type({mfa, 0}) -> true; +is_default_type({module, 0}) -> true; +is_default_type({neg_integer, 0}) -> true; +is_default_type({nil, 0}) -> true; +is_default_type({no_return, 0}) -> true; +is_default_type({node, 0}) -> true; +is_default_type({non_neg_integer, 0}) -> true; +is_default_type({none, 0}) -> true; +is_default_type({nonempty_list, 0}) -> true; +is_default_type({nonempty_list, 1}) -> true; +is_default_type({nonempty_improper_list, 2}) -> true; +is_default_type({nonempty_maybe_improper_list, 0}) -> true; +is_default_type({nonempty_maybe_improper_list, 2}) -> true; +is_default_type({nonempty_string, 0}) -> true; +is_default_type({number, 0}) -> true; +is_default_type({pid, 0}) -> true; +is_default_type({port, 0}) -> true; +is_default_type({pos_integer, 0}) -> true; +is_default_type({queue, 0}) -> true; +is_default_type({range, 2}) -> true; +is_default_type({reference, 0}) -> true; +is_default_type({set, 0}) -> true; +is_default_type({string, 0}) -> true; +is_default_type({term, 0}) -> true; +is_default_type({timeout, 0}) -> true; +is_default_type({var, 1}) -> true; +is_default_type(_) -> false. %% R13 is_newly_introduced_builtin_type({arity, 0}) -> true; @@ -2776,10 +2774,7 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) -> L = gb_sets:to_list(ExpTs) ++ dict:fetch_keys(D), UsedTypes = gb_sets:from_list(L), FoldFun = - fun(_Type, -1, AccSt) -> - %% Default type - AccSt; - (Type, #typeinfo{line = FileLine}, AccSt) -> + fun(Type, #typeinfo{line = FileLine}, AccSt) -> case loc(FileLine) of {FirstFile, _} -> case gb_sets:is_member(Type, UsedTypes) of @@ -2801,10 +2796,7 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) -> check_local_opaque_types(St) -> #lint{types=Ts, exp_types=ExpTs} = St, FoldFun = - fun(_Type, -1, AccSt) -> - %% Default type - AccSt; - (_Type, #typeinfo{attr = type}, AccSt) -> + fun(_Type, #typeinfo{attr = type}, AccSt) -> AccSt; (Type, #typeinfo{attr = opaque, line = FileLine}, AccSt) -> case gb_sets:is_element(Type, ExpTs) of -- cgit v1.2.3 From 48b246a571a18a91999d64d2e1700c2b4e5b152c Mon Sep 17 00:00:00 2001 From: Fredrik Gustafsson Date: Wed, 15 May 2013 11:08:19 +0200 Subject: stdlib: re-factored erl_lint.erl --- lib/stdlib/src/erl_lint.erl | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl index b37ee5066c..08b8541014 100644 --- a/lib/stdlib/src/erl_lint.erl +++ b/lib/stdlib/src/erl_lint.erl @@ -1006,7 +1006,10 @@ check_undefined_functions(#lint{called=Called0,defined=Def0}=St0) -> check_undefined_types(#lint{usage=Usage,types=Def}=St0) -> Used = Usage#usage.used_types, UTAs = dict:fetch_keys(Used), - Undef = [{TA,dict:fetch(TA, Used)} || TA <- UTAs, not dict:is_key(TA, Def), not is_default_type(TA)], + Undef = [{TA,dict:fetch(TA, Used)} || + TA <- UTAs, + not dict:is_key(TA, Def), + not is_default_type(TA)], foldl(fun ({TA,L}, St) -> add_error(L, {undefined_type,TA}, St) end, St0, Undef). -- cgit v1.2.3