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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/dialyzer/src/dialyzer_races.erl
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The R13B03 release.OTP_R13B03
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+%% -*- erlang-indent-level: 2 -*-
+%%-----------------------------------------------------------------------
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%%----------------------------------------------------------------------
+%%% File : dialyzer_races.erl
+%%% Author : Maria Christakis <[email protected]>
+%%% Description : Utility functions for race condition detection
+%%%
+%%% Created : 21 Nov 2008 by Maria Christakis <[email protected]>
+%%%----------------------------------------------------------------------
+-module(dialyzer_races).
+
+%% Race Analysis
+
+-export([store_race_call/5, race/1, get_race_warnings/2, format_args/4]).
+
+%% Record Interfaces
+
+-export([beg_clause_new/3, cleanup/1, end_case_new/1, end_clause_new/3,
+ get_curr_fun/1, get_curr_fun_args/1, get_new_table/1,
+ get_race_analysis/1, get_race_list/1, get_race_list_size/1,
+ let_tag_new/2, new/0, put_curr_fun/3, put_fun_args/2,
+ put_race_analysis/2, put_race_list/3]).
+
+-include("dialyzer.hrl").
+
+%%% ===========================================================================
+%%%
+%%% Definitions
+%%%
+%%% ===========================================================================
+
+-define(local, 5).
+-define(no_arg, no_arg).
+-define(no_label, no_label).
+
+-define(WARN_WHEREIS_REGISTER, warn_whereis_register).
+-define(WARN_ETS_LOOKUP_INSERT, warn_ets_lookup_insert).
+-define(WARN_MNESIA_DIRTY_READ_WRITE, warn_mnesia_dirty_read_write).
+-define(WARN_NO_WARN, warn_no_warn).
+
+%%% ===========================================================================
+%%%
+%%% Local Types
+%%%
+%%% ===========================================================================
+
+-type mfa_or_funlbl() :: label() | mfa().
+
+-type label_type() :: label() | [label()] | {label()} | ?no_label.
+-type args() :: [label_type() | [string()]].
+-type core_vars() :: cerl:cerl() | ?no_arg.
+-type var_to_map() :: core_vars() | [cerl:cerl()].
+-type core_args() :: [core_vars()] | 'empty'.
+-type op() :: 'bind' | 'unbind'.
+
+-type dep_calls() :: 'whereis' | 'ets_lookup' | 'mnesia_dirty_read'.
+-type warn_calls() :: 'register' | 'ets_insert' | 'mnesia_dirty_write'.
+-type call() :: 'whereis' | 'register' | 'ets_new' | 'ets_lookup'
+ | 'ets_insert' | 'mnesia_dirty_read1'
+ | 'mnesia_dirty_read2' | 'mnesia_dirty_write1'
+ | 'mnesia_dirty_write2' | 'function_call'.
+-type race_tag() :: 'whereis_register' | 'ets_lookup_insert'
+ | 'mnesia_dirty_read_write'.
+
+-record(beg_clause, {arg :: var_to_map(),
+ pats :: var_to_map(),
+ guard :: cerl:cerl()}).
+-record(end_clause, {arg :: var_to_map(),
+ pats :: var_to_map(),
+ guard :: cerl:cerl()}).
+-record(end_case, {clauses :: [#end_clause{}]}).
+-record(curr_fun, {status :: 'in' | 'out',
+ mfa :: mfa_or_funlbl(),
+ label :: label(),
+ def_vars :: [core_vars()],
+ arg_types :: [erl_types:erl_type()],
+ call_vars :: [core_vars()],
+ var_map :: dict()}).
+-record(dep_call, {call_name :: dep_calls(),
+ args :: args(),
+ arg_types :: [erl_types:erl_type()],
+ vars :: [core_vars()],
+ state :: _,
+ file_line :: file_line(),
+ var_map :: dict()}).
+-record(fun_call, {caller :: mfa_or_funlbl(),
+ callee :: mfa_or_funlbl(),
+ arg_types :: [erl_types:erl_type()],
+ vars :: [core_vars()]}).
+-record(let_tag, {var :: var_to_map(),
+ arg :: var_to_map()}).
+-record(warn_call, {call_name :: warn_calls(),
+ args :: args(),
+ var_map :: dict()}).
+
+-type case_tags() :: 'beg_case' | #beg_clause{} | #end_clause{} | #end_case{}.
+-type code() :: [#dep_call{} | #warn_call{} | #fun_call{} |
+ #curr_fun{} | #let_tag{} | case_tags() | race_tag()].
+
+-type table_var() :: label() | ?no_label.
+-type table() :: {'named', table_var(), [string()]} | 'other' | 'no_t'.
+
+-record(race_fun, {mfa :: mfa(),
+ args :: args(),
+ arg_types :: [erl_types:erl_type()],
+ vars :: [core_vars()],
+ file_line :: file_line(),
+ index :: non_neg_integer(),
+ fun_mfa :: mfa_or_funlbl(),
+ fun_label :: label()}).
+
+-record(races, {curr_fun :: mfa_or_funlbl(),
+ curr_fun_label :: label(),
+ curr_fun_args = 'empty' :: core_args(),
+ new_table = 'no_t' :: table(),
+ race_list = [] :: code(),
+ race_list_size = 0 :: non_neg_integer(),
+ race_tags = [] :: [#race_fun{}],
+ %% true for fun types and warning mode
+ race_analysis = false :: boolean(),
+ race_warnings = [] :: [dial_warning()]}).
+
+%%% ===========================================================================
+%%%
+%%% Exported Types
+%%%
+%%% ===========================================================================
+
+-opaque races() :: #races{}.
+
+%%% ===========================================================================
+%%%
+%%% Race Analysis
+%%%
+%%% ===========================================================================
+
+-spec store_race_call(mfa_or_funlbl(), [erl_types:erl_type()], [core_vars()],
+ file_line(), dialyzer_dataflow:state()) ->
+ dialyzer_dataflow:state().
+
+store_race_call(Fun, ArgTypes, Args, FileLine, State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ CurrFun = Races#races.curr_fun,
+ CurrFunLabel = Races#races.curr_fun_label,
+ RaceTags = Races#races.race_tags,
+ CleanState = dialyzer_dataflow:state__records_only(State),
+ {NewRaceList, NewRaceListSize, NewRaceTags, NewTable} =
+ case CurrFun of
+ {_Module, module_info, A} when A =:= 0 orelse A =:= 1 ->
+ {[], 0, RaceTags, no_t};
+ _Thing ->
+ RaceList = Races#races.race_list,
+ RaceListSize = Races#races.race_list_size,
+ case Fun of
+ {erlang, get_module_info, A} when A =:= 1 orelse A =:= 2 ->
+ {[], 0, RaceTags, no_t};
+ {erlang, register, 2} ->
+ VarArgs = format_args(Args, ArgTypes, CleanState, register),
+ RaceFun = #race_fun{mfa = Fun, args = VarArgs,
+ arg_types = ArgTypes, vars = Args,
+ file_line = FileLine, index = RaceListSize,
+ fun_mfa = CurrFun, fun_label = CurrFunLabel},
+ {[#warn_call{call_name = register, args = VarArgs}|
+ RaceList], RaceListSize + 1, [RaceFun|RaceTags], no_t};
+ {erlang, whereis, 1} ->
+ VarArgs = format_args(Args, ArgTypes, CleanState, whereis),
+ {[#dep_call{call_name = whereis, args = VarArgs,
+ arg_types = ArgTypes, vars = Args,
+ state = CleanState, file_line = FileLine}|
+ RaceList], RaceListSize + 1, RaceTags, no_t};
+ {ets, insert, 2} ->
+ VarArgs = format_args(Args, ArgTypes, CleanState, ets_insert),
+ RaceFun = #race_fun{mfa = Fun, args = VarArgs,
+ arg_types = ArgTypes, vars = Args,
+ file_line = FileLine, index = RaceListSize,
+ fun_mfa = CurrFun, fun_label = CurrFunLabel},
+ {[#warn_call{call_name = ets_insert, args = VarArgs}|
+ RaceList], RaceListSize + 1, [RaceFun|RaceTags], no_t};
+ {ets, lookup, 2} ->
+ VarArgs = format_args(Args, ArgTypes, CleanState, ets_lookup),
+ {[#dep_call{call_name = ets_lookup, args = VarArgs,
+ arg_types = ArgTypes, vars = Args,
+ state = CleanState, file_line = FileLine}|
+ RaceList], RaceListSize + 1, RaceTags, no_t};
+ {ets, new, 2} ->
+ VarArgs = format_args(Args, ArgTypes, CleanState, ets_new),
+ [VarArgs1, VarArgs2, _, Options] = VarArgs,
+ NewTable1 =
+ case lists:member("'public'", Options) of
+ true ->
+ case lists:member("'named_table'", Options) of
+ true ->
+ {named, VarArgs1, VarArgs2};
+ false -> other
+ end;
+ false -> no_t
+ end,
+ {RaceList, RaceListSize, RaceTags, NewTable1};
+ {mnesia, dirty_read, A} when A =:= 1 orelse A =:= 2 ->
+ VarArgs =
+ case A of
+ 1 ->
+ format_args(Args, ArgTypes, CleanState, mnesia_dirty_read1);
+ 2 ->
+ format_args(Args, ArgTypes, CleanState, mnesia_dirty_read2)
+ end,
+ {[#dep_call{call_name = mnesia_dirty_read, args = VarArgs,
+ arg_types = ArgTypes, vars = Args,
+ state = CleanState, file_line = FileLine}|RaceList],
+ RaceListSize + 1, RaceTags, no_t};
+ {mnesia, dirty_write, A} when A =:= 1 orelse A =:= 2 ->
+ VarArgs =
+ case A of
+ 1 ->
+ format_args(Args, ArgTypes, CleanState, mnesia_dirty_write1);
+ 2 ->
+ format_args(Args, ArgTypes, CleanState, mnesia_dirty_write2)
+ end,
+ RaceFun = #race_fun{mfa = Fun, args = VarArgs,
+ arg_types = ArgTypes, vars = Args,
+ file_line = FileLine, index = RaceListSize,
+ fun_mfa = CurrFun, fun_label = CurrFunLabel},
+ {[#warn_call{call_name = mnesia_dirty_write,
+ args = VarArgs}|RaceList],
+ RaceListSize + 1, [RaceFun|RaceTags], no_t};
+ Int when is_integer(Int) ->
+ {[#fun_call{caller = CurrFun, callee = Int, arg_types = ArgTypes,
+ vars = Args}|RaceList],
+ RaceListSize + 1, RaceTags, no_t};
+ _Other ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ case digraph:vertex(dialyzer_callgraph:get_digraph(Callgraph),
+ Fun) of
+ {Fun, confirmed} ->
+ {[#fun_call{caller = CurrFun, callee = Fun,
+ arg_types = ArgTypes, vars = Args}|RaceList],
+ RaceListSize + 1, RaceTags, no_t};
+ false ->
+ {RaceList, RaceListSize, RaceTags, no_t}
+ end
+ end
+ end,
+ state__renew_info(NewRaceList, NewRaceListSize, NewRaceTags, NewTable, State).
+
+-spec race(dialyzer_dataflow:state()) -> dialyzer_dataflow:state().
+
+race(State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ RaceTags = Races#races.race_tags,
+ RetState =
+ case RaceTags of
+ [] -> State;
+ [#race_fun{mfa = Fun,
+ args = VarArgs, arg_types = ArgTypes,
+ vars = Args, file_line = FileLine,
+ index = Index, fun_mfa = CurrFun,
+ fun_label = CurrFunLabel}|T] ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ {ok, [_Args, Code]} =
+ dict:find(CurrFun, dialyzer_callgraph:get_race_code(Callgraph)),
+ RaceList = lists:reverse(Code),
+ RaceWarnTag =
+ case Fun of
+ {erlang, register, 2} -> ?WARN_WHEREIS_REGISTER;
+ {ets, insert, 2} -> ?WARN_ETS_LOOKUP_INSERT;
+ {mnesia, dirty_write, _A} -> ?WARN_MNESIA_DIRTY_READ_WRITE
+ end,
+ State1 =
+ state__renew_curr_fun(CurrFun,
+ state__renew_curr_fun_label(CurrFunLabel,
+ state__renew_race_list(lists:nthtail(length(RaceList) - Index,
+ RaceList), State))),
+ DepList = fixup_race_list(RaceWarnTag, VarArgs, State1),
+ {State2, RaceWarn} =
+ get_race_warn(Fun, Args, ArgTypes, DepList, State),
+ race(
+ state__add_race_warning(
+ state__renew_race_tags(T, State2), RaceWarn, RaceWarnTag,
+ FileLine))
+ end,
+ state__renew_race_tags([], RetState).
+
+fixup_race_list(RaceWarnTag, WarnVarArgs, State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ CurrFun = Races#races.curr_fun,
+ CurrFunLabel = Races#races.curr_fun_label,
+ RaceList = Races#races.race_list,
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ Digraph = dialyzer_callgraph:get_digraph(Callgraph),
+ Calls = digraph:edges(Digraph),
+ RaceTag =
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER -> whereis_register;
+ ?WARN_ETS_LOOKUP_INSERT -> ets_lookup_insert;
+ ?WARN_MNESIA_DIRTY_READ_WRITE -> mnesia_dirty_read_write
+ end,
+ NewRaceList = [RaceTag|RaceList],
+ CleanState = dialyzer_dataflow:state__cleanup(State),
+ NewState = state__renew_race_list(NewRaceList, CleanState),
+ DepList1 =
+ fixup_race_forward_pullout(CurrFun, CurrFunLabel, Calls,
+ lists:reverse(NewRaceList), [], CurrFun,
+ WarnVarArgs, RaceWarnTag, dict:new(),
+ [], [], [], 2 * ?local, NewState),
+ Parents =
+ fixup_race_backward(CurrFun, Calls, Calls, [], ?local),
+ UParents = lists:usort(Parents),
+ Filtered =
+ filter_parents(UParents, UParents, Digraph),
+ NewParents =
+ case lists:member(CurrFun, Filtered) of
+ true -> Filtered;
+ false -> [CurrFun|Filtered]
+ end,
+ DepList2 =
+ fixup_race_list_helper(NewParents, Calls, CurrFun, WarnVarArgs,
+ RaceWarnTag, NewState),
+ lists:usort(cleanup_dep_calls(DepList1 ++ DepList2)).
+
+fixup_race_list_helper(Parents, Calls, CurrFun, WarnVarArgs, RaceWarnTag,
+ State) ->
+ case Parents of
+ [] -> [];
+ [Head|Tail] ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ Code =
+ case dict:find(Head, dialyzer_callgraph:get_race_code(Callgraph)) of
+ error -> [];
+ {ok, [_A, C]} -> C
+ end,
+ {ok, FunLabel} = dialyzer_callgraph:lookup_label(Head, Callgraph),
+ DepList1 =
+ fixup_race_forward_pullout(Head, FunLabel, Calls, Code, [], CurrFun,
+ WarnVarArgs, RaceWarnTag, dict:new(),
+ [], [], [], 2 * ?local, State),
+ DepList2 =
+ fixup_race_list_helper(Tail, Calls, CurrFun, WarnVarArgs,
+ RaceWarnTag, State),
+ DepList1 ++ DepList2
+ end.
+
+%%% ===========================================================================
+%%%
+%%% Forward Analysis
+%%%
+%%% ===========================================================================
+
+fixup_race_forward_pullout(CurrFun, CurrFunLabel, Calls, Code, RaceList,
+ InitFun, WarnVarArgs, RaceWarnTag, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NestingLevel,
+ State) ->
+ {DepList, NewCurrFun, NewCurrFunLabel, NewCalls,
+ NewCode, NewRaceList, NewRaceVarMap, NewFunDefVars,
+ NewFunCallVars, NewFunArgTypes, NewNestingLevel} =
+ fixup_race_forward(CurrFun, CurrFunLabel, Calls, Code, RaceList,
+ InitFun, WarnVarArgs, RaceWarnTag, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NestingLevel,
+ cleanup_race_code(State)),
+ case NewCode of
+ [] -> DepList;
+ [#fun_call{caller = NewCurrFun, callee = Call, arg_types = FunTypes,
+ vars = FunArgs}|Tail] ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ OkCall = {ok, Call},
+ {Name, Label} =
+ case is_integer(Call) of
+ true ->
+ case dialyzer_callgraph:lookup_name(Call, Callgraph) of
+ error -> {OkCall, OkCall};
+ N -> {N, OkCall}
+ end;
+ false ->
+ {OkCall, dialyzer_callgraph:lookup_label(Call, Callgraph)}
+ end,
+ {NewCurrFun1, NewCurrFunLabel1, NewCalls1, NewCode1, NewRaceList1,
+ NewRaceVarMap1, NewFunDefVars1, NewFunCallVars1, NewFunArgTypes1,
+ NewNestingLevel1} =
+ case Label =:= error of
+ true ->
+ {NewCurrFun, NewCurrFunLabel, NewCalls, Tail, NewRaceList,
+ NewRaceVarMap, NewFunDefVars, NewFunCallVars, NewFunArgTypes,
+ NewNestingLevel};
+ false ->
+ {ok, Fun} = Name,
+ {ok, Int} = Label,
+ case dict:find(Fun,
+ dialyzer_callgraph:get_race_code(Callgraph)) of
+ error ->
+ {NewCurrFun, NewCurrFunLabel, NewCalls, Tail, NewRaceList,
+ NewRaceVarMap, NewFunDefVars, NewFunCallVars, NewFunArgTypes,
+ NewNestingLevel};
+ {ok, [Args, CodeB]} ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ {RetCurrFun, RetCurrFunLabel, RetCalls, RetCode,
+ RetRaceList, RetRaceVarMap, RetFunDefVars, RetFunCallVars,
+ RetFunArgTypes, RetNestingLevel} =
+ fixup_race_forward_helper(NewCurrFun,
+ NewCurrFunLabel, Fun, Int, NewCalls, NewCalls,
+ [#curr_fun{status = out, mfa = NewCurrFun,
+ label = NewCurrFunLabel,
+ var_map = NewRaceVarMap,
+ def_vars = NewFunDefVars,
+ call_vars = NewFunCallVars,
+ arg_types = NewFunArgTypes}|
+ Tail],
+ NewRaceList, InitFun, FunArgs, FunTypes, RaceWarnTag,
+ NewRaceVarMap, NewFunDefVars, NewFunCallVars,
+ NewFunArgTypes, NewNestingLevel, Args, CodeB,
+ Races#races.race_list),
+ case RetCode of
+ [#curr_fun{}|_CodeTail] ->
+ {NewCurrFun, NewCurrFunLabel, RetCalls, RetCode,
+ RetRaceList, NewRaceVarMap, NewFunDefVars,
+ NewFunCallVars, NewFunArgTypes, RetNestingLevel};
+ _Else ->
+ {RetCurrFun, RetCurrFunLabel, RetCalls, RetCode,
+ RetRaceList, RetRaceVarMap, RetFunDefVars,
+ RetFunCallVars, RetFunArgTypes, RetNestingLevel}
+ end
+ end
+ end,
+ DepList ++
+ fixup_race_forward_pullout(NewCurrFun1, NewCurrFunLabel1, NewCalls1,
+ NewCode1, NewRaceList1, InitFun, WarnVarArgs,
+ RaceWarnTag, NewRaceVarMap1, NewFunDefVars1,
+ NewFunCallVars1, NewFunArgTypes1,
+ NewNestingLevel1, State)
+ end.
+
+fixup_race_forward(CurrFun, CurrFunLabel, Calls, Code, RaceList,
+ InitFun, WarnVarArgs, RaceWarnTag, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NestingLevel,
+ State) ->
+ case Code of
+ [] ->
+ {[], CurrFun, CurrFunLabel, Calls, Code, RaceList, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NestingLevel};
+ [Head|Tail] ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ {NewRL, DepList, NewNL, Return} =
+ case Head of
+ #dep_call{call_name = whereis} ->
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ {[Head#dep_call{var_map = RaceVarMap}|RaceList],
+ [], NestingLevel, false};
+ _Other ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ #dep_call{call_name = ets_lookup, args = DepCallArgs} ->
+ case RaceWarnTag of
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [Tab, Names, _, _] = DepCallArgs,
+ case compare_var_list(Tab,
+ dialyzer_callgraph:get_public_tables(Callgraph),
+ RaceVarMap)
+ orelse
+ length(Names --
+ dialyzer_callgraph:get_named_tables(Callgraph)) <
+ length(Names) of
+ true ->
+ {[Head#dep_call{var_map = RaceVarMap}|RaceList],
+ [], NestingLevel, false};
+ false ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ _Other ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ #dep_call{call_name = mnesia_dirty_read} ->
+ case RaceWarnTag of
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ {[Head#dep_call{var_map = RaceVarMap}|RaceList],
+ [], NestingLevel, false};
+ _Other ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ #warn_call{call_name = register} ->
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ {[Head#warn_call{var_map = RaceVarMap}|RaceList],
+ [], NestingLevel, false};
+ _Other ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ #warn_call{call_name = ets_insert, args = WarnCallArgs} ->
+ case RaceWarnTag of
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [Tab, Names, _, _] = WarnCallArgs,
+ case compare_var_list(Tab,
+ dialyzer_callgraph:get_public_tables(Callgraph),
+ RaceVarMap)
+ orelse
+ length(Names --
+ dialyzer_callgraph:get_named_tables(Callgraph)) <
+ length(Names) of
+ true ->
+ {[Head#warn_call{var_map = RaceVarMap}|RaceList],
+ [], NestingLevel, false};
+ false ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ _Other ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ #warn_call{call_name = mnesia_dirty_write} ->
+ case RaceWarnTag of
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ {[Head#warn_call{var_map = RaceVarMap}|RaceList],
+ [], NestingLevel, false};
+ _Other ->
+ {RaceList, [], NestingLevel, false}
+ end;
+ #fun_call{caller = CurrFun, callee = InitFun} ->
+ {RaceList, [], NestingLevel, false};
+ #fun_call{caller = CurrFun} ->
+ {RaceList, [], NestingLevel - 1, false};
+ beg_case ->
+ {[Head|RaceList], [], NestingLevel, false};
+ #beg_clause{} ->
+ {[#beg_clause{}|RaceList], [], NestingLevel, false};
+ #end_clause{} ->
+ {[#end_clause{}|RaceList], [], NestingLevel, false};
+ #end_case{} ->
+ {[Head|RaceList], [], NestingLevel, false};
+ #let_tag{} ->
+ {RaceList, [], NestingLevel, false};
+ #curr_fun{status = in, mfa = InitFun,
+ label = _InitFunLabel, var_map = _NewRVM,
+ def_vars = NewFDV, call_vars = NewFCV,
+ arg_types = _NewFAT} ->
+ {[#curr_fun{status = out, var_map = RaceVarMap,
+ def_vars = NewFDV, call_vars = NewFCV}|
+ RaceList], [], NestingLevel - 1, false};
+ #curr_fun{status = in, def_vars = NewFDV,
+ call_vars = NewFCV} ->
+ {[#curr_fun{status = out, var_map = RaceVarMap,
+ def_vars = NewFDV, call_vars = NewFCV}|
+ RaceList],
+ [], NestingLevel - 1, false};
+ #curr_fun{status = out} ->
+ {[#curr_fun{status = in, var_map = RaceVarMap}|RaceList], [],
+ NestingLevel + 1, false};
+ RaceTag ->
+ PublicTables = dialyzer_callgraph:get_public_tables(Callgraph),
+ NamedTables = dialyzer_callgraph:get_named_tables(Callgraph),
+ WarnVarArgs1 =
+ var_type_analysis(FunDefVars, FunArgTypes, WarnVarArgs,
+ RaceWarnTag, RaceVarMap,
+ dialyzer_dataflow:state__records_only(State)),
+ {NewDepList, IsPublic, _Return} =
+ get_deplist_paths(RaceList, WarnVarArgs1, RaceWarnTag,
+ RaceVarMap, 0, PublicTables, NamedTables),
+ {NewHead, NewDepList1} =
+ case RaceTag of
+ whereis_register ->
+ {[#warn_call{call_name = register, args = WarnVarArgs,
+ var_map = RaceVarMap}],
+ NewDepList};
+ ets_lookup_insert ->
+ NewWarnCall =
+ [#warn_call{call_name = ets_insert, args = WarnVarArgs,
+ var_map = RaceVarMap}],
+ [Tab, Names, _, _] = WarnVarArgs,
+ case IsPublic orelse
+ compare_var_list(Tab, PublicTables, RaceVarMap)
+ orelse
+ length(Names -- NamedTables) < length(Names) of
+ true ->
+ {NewWarnCall, NewDepList};
+ false -> {NewWarnCall, []}
+ end;
+ mnesia_dirty_read_write ->
+ {[#warn_call{call_name = mnesia_dirty_write,
+ args = WarnVarArgs, var_map = RaceVarMap}],
+ NewDepList}
+ end,
+ {NewHead ++ RaceList, NewDepList1, NestingLevel,
+ is_last_race(RaceTag, InitFun, Tail, Callgraph)}
+ end,
+ {NewCurrFun, NewCurrFunLabel, NewCode, NewRaceList, NewRaceVarMap,
+ NewFunDefVars, NewFunCallVars, NewFunArgTypes, NewNestingLevel,
+ PullOut} =
+ case Head of
+ #fun_call{caller = CurrFun} ->
+ case NewNL =:= 0 of
+ true ->
+ {CurrFun, CurrFunLabel, Tail, NewRL, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL, false};
+ false ->
+ {CurrFun, CurrFunLabel, Code, NewRL, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL, true}
+ end;
+ #beg_clause{arg = Arg, pats = Pats, guard = Guard} ->
+ {RaceVarMap1, RemoveClause} =
+ race_var_map_guard(Arg, Pats, Guard, RaceVarMap, bind),
+ case RemoveClause of
+ true ->
+ {RaceList2,
+ #curr_fun{mfa = CurrFun2, label = CurrFunLabel2,
+ var_map = RaceVarMap2, def_vars = FunDefVars2,
+ call_vars = FunCallVars2, arg_types = FunArgTypes2},
+ Code2, NestingLevel2} =
+ remove_clause(NewRL,
+ #curr_fun{mfa = CurrFun, label = CurrFunLabel,
+ var_map = RaceVarMap1,
+ def_vars = FunDefVars,
+ call_vars = FunCallVars,
+ arg_types = FunArgTypes},
+ Tail, NewNL),
+ {CurrFun2, CurrFunLabel2, Code2, RaceList2,
+ RaceVarMap2, FunDefVars2, FunCallVars2, FunArgTypes2,
+ NestingLevel2, false};
+ false ->
+ {CurrFun, CurrFunLabel, Tail, NewRL, RaceVarMap1,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL, false}
+ end;
+ #end_clause{arg = Arg, pats = Pats, guard = Guard} ->
+ {RaceVarMap1, _RemoveClause} =
+ race_var_map_guard(Arg, Pats, Guard, RaceVarMap, unbind),
+ {CurrFun, CurrFunLabel, Tail, NewRL, RaceVarMap1,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL,
+ false};
+ #end_case{clauses = Clauses} ->
+ RaceVarMap1 =
+ race_var_map_clauses(Clauses, RaceVarMap),
+ {CurrFun, CurrFunLabel, Tail, NewRL, RaceVarMap1,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL,
+ false};
+ #let_tag{var = Var, arg = Arg} ->
+ {CurrFun, CurrFunLabel, Tail, NewRL,
+ race_var_map(Var, Arg, RaceVarMap, bind), FunDefVars,
+ FunCallVars, FunArgTypes, NewNL, false};
+ #curr_fun{mfa = CurrFun1, label = CurrFunLabel1,
+ var_map = RaceVarMap1, def_vars = FunDefVars1,
+ call_vars = FunCallVars1, arg_types = FunArgTypes1} ->
+ case NewNL =:= 0 of
+ true ->
+ {CurrFun, CurrFunLabel,
+ remove_nonlocal_functions(Tail, 1), NewRL, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL, false};
+ false ->
+ {CurrFun1, CurrFunLabel1, Tail, NewRL, RaceVarMap1,
+ FunDefVars1, FunCallVars1, FunArgTypes1, NewNL, false}
+ end;
+ _Thing ->
+ {CurrFun, CurrFunLabel, Tail, NewRL, RaceVarMap,
+ FunDefVars, FunCallVars, FunArgTypes, NewNL, false}
+ end,
+ case Return of
+ true ->
+ {DepList, NewCurrFun, NewCurrFunLabel, Calls,
+ [], NewRaceList, NewRaceVarMap, NewFunDefVars,
+ NewFunCallVars, NewFunArgTypes, NewNestingLevel};
+ false ->
+ NewNestingLevel1 =
+ case NewNestingLevel =:= 0 of
+ true -> NewNestingLevel + 1;
+ false -> NewNestingLevel
+ end,
+ case PullOut of
+ true ->
+ {DepList, NewCurrFun, NewCurrFunLabel, Calls,
+ NewCode, NewRaceList, NewRaceVarMap, NewFunDefVars,
+ NewFunCallVars, NewFunArgTypes, NewNestingLevel1};
+ false ->
+ {RetDepList, NewCurrFun1, NewCurrFunLabel1, NewCalls1,
+ NewCode1, NewRaceList1, NewRaceVarMap1, NewFunDefVars1,
+ NewFunCallVars1, NewFunArgTypes1, NewNestingLevel2} =
+ fixup_race_forward(NewCurrFun, NewCurrFunLabel, Calls,
+ NewCode, NewRaceList, InitFun, WarnVarArgs,
+ RaceWarnTag, NewRaceVarMap, NewFunDefVars,
+ NewFunCallVars, NewFunArgTypes,
+ NewNestingLevel1, State),
+ {DepList ++ RetDepList, NewCurrFun1, NewCurrFunLabel1,
+ NewCalls1, NewCode1, NewRaceList1, NewRaceVarMap1,
+ NewFunDefVars1, NewFunCallVars1, NewFunArgTypes1,
+ NewNestingLevel2}
+ end
+ end
+ end.
+
+get_deplist_paths(RaceList, WarnVarArgs, RaceWarnTag, RaceVarMap, CurrLevel,
+ PublicTables, NamedTables) ->
+ case RaceList of
+ [] -> {[], false, true};
+ [Head|Tail] ->
+ case Head of
+ #end_case{} ->
+ {RaceList1, DepList1, IsPublic1, Continue1} =
+ handle_case(Tail, WarnVarArgs, RaceWarnTag, RaceVarMap, CurrLevel,
+ PublicTables, NamedTables),
+ case Continue1 of
+ true ->
+ {DepList2, IsPublic2, Continue2} =
+ get_deplist_paths(RaceList1, WarnVarArgs, RaceWarnTag,
+ RaceVarMap, CurrLevel, PublicTables,
+ NamedTables),
+ {DepList1 ++ DepList2, IsPublic1 orelse IsPublic2, Continue2};
+ false -> {DepList1, IsPublic1, false}
+ end;
+ #beg_clause{} ->
+ get_deplist_paths(fixup_before_case_path(Tail), WarnVarArgs,
+ RaceWarnTag, RaceVarMap, CurrLevel, PublicTables,
+ NamedTables);
+ #curr_fun{status = in, var_map = RaceVarMap1} ->
+ {DepList, IsPublic, Continue} =
+ get_deplist_paths(Tail, WarnVarArgs, RaceWarnTag, RaceVarMap,
+ CurrLevel + 1, PublicTables, NamedTables),
+ IsPublic1 =
+ case RaceWarnTag of
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [Tabs, Names, _, _] = WarnVarArgs,
+ IsPublic orelse
+ lists:any(
+ fun (T) ->
+ compare_var_list(T, PublicTables, RaceVarMap1)
+ end, Tabs)
+ orelse
+ length(Names -- NamedTables) < length(Names);
+ _ -> true
+ end,
+ {DepList, IsPublic1, Continue};
+ #curr_fun{status = out, var_map = RaceVarMap1, def_vars = FunDefVars,
+ call_vars = FunCallVars} ->
+ WarnVarArgs1 =
+ var_analysis([format_arg(DefVar) || DefVar <- FunDefVars],
+ [format_arg(CallVar) || CallVar <- FunCallVars],
+ WarnVarArgs, RaceWarnTag),
+ {WarnVarArgs2, Stop} =
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs1,
+ Vars =
+ lists:flatten(
+ [find_all_bound_vars(V, RaceVarMap1) || V <- WVA1]),
+ case {Vars, CurrLevel} of
+ {[], 0} ->
+ {WarnVarArgs, true};
+ {[], _} ->
+ {WarnVarArgs, false};
+ _ ->
+ {[Vars, WVA2, WVA3, WVA4], false}
+ end;
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs1,
+ Vars1 =
+ lists:flatten(
+ [find_all_bound_vars(V1, RaceVarMap1) || V1 <- WVA1]),
+ Vars2 =
+ lists:flatten(
+ [find_all_bound_vars(V2, RaceVarMap1) || V2 <- WVA3]),
+ case {Vars1, Vars2, CurrLevel} of
+ {[], _, 0} ->
+ {WarnVarArgs, true};
+ {[], _, _} ->
+ {WarnVarArgs, false};
+ {_, [], 0} ->
+ {WarnVarArgs, true};
+ {_, [], _} ->
+ {WarnVarArgs, false};
+ _ ->
+ {[Vars1, WVA2, Vars2, WVA4], false}
+ end;
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ [WVA1, WVA2|T] = WarnVarArgs1,
+ Vars =
+ lists:flatten(
+ [find_all_bound_vars(V, RaceVarMap1) || V <- WVA1]),
+ case {Vars, CurrLevel} of
+ {[], 0} ->
+ {WarnVarArgs, true};
+ {[], _} ->
+ {WarnVarArgs, false};
+ _ ->
+ {[Vars, WVA2|T], false}
+ end
+ end,
+ case Stop of
+ true -> {[], false, false};
+ false ->
+ CurrLevel1 =
+ case CurrLevel of
+ 0 -> CurrLevel;
+ _ -> CurrLevel - 1
+ end,
+ get_deplist_paths(Tail, WarnVarArgs2, RaceWarnTag, RaceVarMap1,
+ CurrLevel1, PublicTables, NamedTables)
+ end;
+ #warn_call{call_name = register, args = WarnVarArgs1,
+ var_map = RaceVarMap1} ->
+ case compare_first_arg(WarnVarArgs, WarnVarArgs1, RaceVarMap1) of
+ true -> {[], false, false};
+ NewWarnVarArgs ->
+ get_deplist_paths(Tail, NewWarnVarArgs, RaceWarnTag, RaceVarMap,
+ CurrLevel, PublicTables, NamedTables)
+ end;
+ #warn_call{call_name = ets_insert, args = WarnVarArgs1,
+ var_map = RaceVarMap1} ->
+ case compare_ets_insert(WarnVarArgs, WarnVarArgs1, RaceVarMap1) of
+ true -> {[], false, false};
+ NewWarnVarArgs ->
+ get_deplist_paths(Tail, NewWarnVarArgs, RaceWarnTag, RaceVarMap,
+ CurrLevel, PublicTables, NamedTables)
+ end;
+ #warn_call{call_name = mnesia_dirty_write, args = WarnVarArgs1,
+ var_map = RaceVarMap1} ->
+ case compare_first_arg(WarnVarArgs, WarnVarArgs1, RaceVarMap1) of
+ true -> {[], false, false};
+ NewWarnVarArgs ->
+ get_deplist_paths(Tail, NewWarnVarArgs, RaceWarnTag, RaceVarMap,
+ CurrLevel, PublicTables, NamedTables)
+ end;
+ #dep_call{var_map = RaceVarMap1} ->
+ {DepList, IsPublic, Continue} =
+ get_deplist_paths(Tail, WarnVarArgs, RaceWarnTag, RaceVarMap,
+ CurrLevel, PublicTables, NamedTables),
+ {refine_race(Head, WarnVarArgs, RaceWarnTag, DepList, RaceVarMap1),
+ IsPublic, Continue}
+ end
+ end.
+
+handle_case(RaceList, WarnVarArgs, RaceWarnTag, RaceVarMap, CurrLevel,
+ PublicTables, NamedTables) ->
+ case RaceList of
+ [] -> {[], [], false, true};
+ [Head|Tail] ->
+ case Head of
+ #end_clause{} ->
+ {RestRaceList, DepList1, IsPublic1, Continue1} =
+ do_clause(Tail, WarnVarArgs, RaceWarnTag, RaceVarMap, CurrLevel,
+ PublicTables, NamedTables),
+ {RetRaceList, DepList2, IsPublic2, Continue2} =
+ handle_case(RestRaceList, WarnVarArgs, RaceWarnTag, RaceVarMap,
+ CurrLevel, PublicTables, NamedTables),
+ {RetRaceList, DepList1 ++ DepList2, IsPublic1 orelse IsPublic2,
+ Continue1 orelse Continue2};
+ beg_case -> {Tail, [], false, false}
+ end
+ end.
+
+do_clause(RaceList, WarnVarArgs, RaceWarnTag, RaceVarMap, CurrLevel,
+ PublicTables, NamedTables) ->
+ {DepList, IsPublic, Continue} =
+ get_deplist_paths(fixup_case_path(RaceList, 0), WarnVarArgs,
+ RaceWarnTag, RaceVarMap, CurrLevel,
+ PublicTables, NamedTables),
+ {fixup_case_rest_paths(RaceList, 0), DepList, IsPublic, Continue}.
+
+fixup_case_path(RaceList, NestingLevel) ->
+ case RaceList of
+ [] -> [];
+ [Head|Tail] ->
+ {NewNestingLevel, Return} =
+ case Head of
+ beg_case -> {NestingLevel - 1, false};
+ #end_case{} -> {NestingLevel + 1, false};
+ #beg_clause{} ->
+ case NestingLevel =:= 0 of
+ true -> {NestingLevel, true};
+ false -> {NestingLevel, false}
+ end;
+ _Other -> {NestingLevel, false}
+ end,
+ case Return of
+ true -> [];
+ false -> [Head|fixup_case_path(Tail, NewNestingLevel)]
+ end
+ end.
+
+%% Gets the race list before a case clause.
+fixup_before_case_path(RaceList) ->
+ case RaceList of
+ [] -> [];
+ [Head|Tail] ->
+ case Head of
+ #end_clause{} ->
+ fixup_before_case_path(fixup_case_rest_paths(Tail, 0));
+ beg_case -> Tail
+ end
+ end.
+
+fixup_case_rest_paths(RaceList, NestingLevel) ->
+ case RaceList of
+ [] -> [];
+ [Head|Tail] ->
+ {NewNestingLevel, Return} =
+ case Head of
+ beg_case -> {NestingLevel - 1, false};
+ #end_case{} -> {NestingLevel + 1, false};
+ #beg_clause{} ->
+ case NestingLevel =:= 0 of
+ true -> {NestingLevel, true};
+ false -> {NestingLevel, false}
+ end;
+ _Other -> {NestingLevel, false}
+ end,
+ case Return of
+ true -> Tail;
+ false -> fixup_case_rest_paths(Tail, NewNestingLevel)
+ end
+ end.
+
+fixup_race_forward_helper(CurrFun, CurrFunLabel, Fun, FunLabel,
+ Calls, CallsToAnalyze, Code, RaceList,
+ InitFun, NewFunArgs, NewFunTypes,
+ RaceWarnTag, RaceVarMap, FunDefVars,
+ FunCallVars, FunArgTypes, NestingLevel,
+ Args, CodeB, StateRaceList) ->
+ case Calls of
+ [] ->
+ {NewRaceList,
+ #curr_fun{mfa = NewCurrFun, label = NewCurrFunLabel,
+ var_map = NewRaceVarMap, def_vars = NewFunDefVars,
+ call_vars = NewFunCallVars, arg_types = NewFunArgTypes},
+ NewCode, NewNestingLevel} =
+ remove_clause(RaceList,
+ #curr_fun{mfa = CurrFun, label = CurrFunLabel, var_map = RaceVarMap,
+ def_vars = FunDefVars, call_vars = FunCallVars,
+ arg_types = FunArgTypes},
+ Code, NestingLevel),
+ {NewCurrFun, NewCurrFunLabel, CallsToAnalyze, NewCode, NewRaceList,
+ NewRaceVarMap, NewFunDefVars, NewFunCallVars, NewFunArgTypes,
+ NewNestingLevel};
+ [Head|Tail] ->
+ case Head of
+ {InitFun, InitFun} when CurrFun =:= InitFun, Fun =:= InitFun ->
+ NewCallsToAnalyze = lists:delete(Head, CallsToAnalyze),
+ NewRaceVarMap =
+ race_var_map(Args, NewFunArgs, RaceVarMap, bind),
+ RetC =
+ fixup_all_calls(InitFun, InitFun, FunLabel, Args,
+ CodeB ++
+ [#curr_fun{status = out, mfa = InitFun,
+ label = CurrFunLabel, var_map = RaceVarMap,
+ def_vars = FunDefVars, call_vars = FunCallVars,
+ arg_types = FunArgTypes}],
+ Code, RaceVarMap),
+ NewCode =
+ fixup_all_calls(InitFun, InitFun, FunLabel, Args,
+ CodeB ++
+ [#curr_fun{status = out, mfa = InitFun,
+ label = CurrFunLabel, var_map = NewRaceVarMap,
+ def_vars = Args, call_vars = NewFunArgs,
+ arg_types = NewFunTypes}],
+ [#curr_fun{status = in, mfa = Fun,
+ label = FunLabel, var_map = NewRaceVarMap,
+ def_vars = Args, call_vars = NewFunArgs,
+ arg_types = NewFunTypes}|
+ lists:reverse(StateRaceList)] ++
+ RetC, NewRaceVarMap),
+ {InitFun, FunLabel, NewCallsToAnalyze, NewCode, RaceList,
+ NewRaceVarMap, Args, NewFunArgs, NewFunTypes, NestingLevel};
+ {CurrFun, Fun} ->
+ NewCallsToAnalyze = lists:delete(Head, CallsToAnalyze),
+ NewRaceVarMap =
+ race_var_map(Args, NewFunArgs, RaceVarMap, bind),
+ RetC =
+ case Fun of
+ InitFun ->
+ fixup_all_calls(CurrFun, Fun, FunLabel, Args,
+ lists:reverse(StateRaceList) ++
+ [#curr_fun{status = out, mfa = CurrFun,
+ label = CurrFunLabel, var_map = RaceVarMap,
+ def_vars = FunDefVars, call_vars = FunCallVars,
+ arg_types = FunArgTypes}],
+ Code, RaceVarMap);
+ _Other1 ->
+ fixup_all_calls(CurrFun, Fun, FunLabel, Args,
+ CodeB ++
+ [#curr_fun{status = out, mfa = CurrFun,
+ label = CurrFunLabel, var_map = RaceVarMap,
+ def_vars = FunDefVars, call_vars = FunCallVars,
+ arg_types = FunArgTypes}],
+ Code, RaceVarMap)
+ end,
+ NewCode =
+ case Fun of
+ InitFun ->
+ [#curr_fun{status = in, mfa = Fun,
+ label = FunLabel, var_map = NewRaceVarMap,
+ def_vars = Args, call_vars = NewFunArgs,
+ arg_types = NewFunTypes}|
+ lists:reverse(StateRaceList)] ++
+ RetC;
+ _ ->
+ [#curr_fun{status = in, mfa = Fun,
+ label = FunLabel, var_map = NewRaceVarMap,
+ def_vars = Args, call_vars = NewFunArgs,
+ arg_types = NewFunTypes}|CodeB] ++
+ RetC
+ end,
+ {Fun, FunLabel, NewCallsToAnalyze, NewCode, RaceList, NewRaceVarMap,
+ Args, NewFunArgs, NewFunTypes, NestingLevel};
+ {_TupleA, _TupleB} ->
+ fixup_race_forward_helper(CurrFun, CurrFunLabel, Fun, FunLabel,
+ Tail, CallsToAnalyze, Code, RaceList, InitFun, NewFunArgs,
+ NewFunTypes, RaceWarnTag, RaceVarMap, FunDefVars, FunCallVars,
+ FunArgTypes, NestingLevel, Args, CodeB, StateRaceList)
+ end
+ end.
+
+%%% ===========================================================================
+%%%
+%%% Backward Analysis
+%%%
+%%% ===========================================================================
+
+fixup_race_backward(CurrFun, Calls, CallsToAnalyze, Parents, Height) ->
+ case Height =:= 0 of
+ true -> Parents;
+ false ->
+ case Calls of
+ [] ->
+ case is_integer(CurrFun) orelse lists:member(CurrFun, Parents) of
+ true -> Parents;
+ false -> [CurrFun|Parents]
+ end;
+ [Head|Tail] ->
+ MorePaths =
+ case Head of
+ {Parent, CurrFun} -> true;
+ {Parent, _TupleB} -> false
+ end,
+ case MorePaths of
+ true ->
+ NewCallsToAnalyze = lists:delete(Head, CallsToAnalyze),
+ NewParents =
+ fixup_race_backward(Parent, NewCallsToAnalyze,
+ NewCallsToAnalyze, Parents, Height - 1),
+ fixup_race_backward(CurrFun, Tail, NewCallsToAnalyze, NewParents,
+ Height);
+ false ->
+ fixup_race_backward(CurrFun, Tail, CallsToAnalyze, Parents,
+ Height)
+ end
+ end
+ end.
+
+%%% ===========================================================================
+%%%
+%%% Utilities
+%%%
+%%% ===========================================================================
+
+are_bound_labels(Label1, Label2, RaceVarMap) ->
+ case dict:find(Label1, RaceVarMap) of
+ error -> false;
+ {ok, Labels} ->
+ lists:member(Label2, Labels) orelse
+ are_bound_labels_helper(Labels, Label1, Label2, RaceVarMap)
+ end.
+
+are_bound_labels_helper(Labels, OldLabel, CompLabel, RaceVarMap) ->
+ case dict:size(RaceVarMap) of
+ 0 -> false;
+ _ ->
+ case Labels of
+ [] -> false;
+ [Head|Tail] ->
+ NewRaceVarMap = dict:erase(OldLabel, RaceVarMap),
+ are_bound_labels(Head, CompLabel, NewRaceVarMap) orelse
+ are_bound_labels_helper(Tail, Head, CompLabel, NewRaceVarMap)
+ end
+ end.
+
+are_bound_vars(Vars1, Vars2, RaceVarMap) ->
+ case is_list(Vars1) andalso is_list(Vars2) of
+ true ->
+ case Vars1 of
+ [] -> false;
+ [AHead|ATail] ->
+ case Vars2 of
+ [] -> false;
+ [PHead|PTail] ->
+ are_bound_vars(AHead, PHead, RaceVarMap) andalso
+ are_bound_vars(ATail, PTail, RaceVarMap)
+ end
+ end;
+ false ->
+ {NewVars1, NewVars2, IsList} =
+ case is_list(Vars1) of
+ true ->
+ case Vars1 of
+ [Var1] -> {Var1, Vars2, true};
+ _Thing -> {Vars1, Vars2, false}
+ end;
+ false ->
+ case is_list(Vars2) of
+ true ->
+ case Vars2 of
+ [Var2] -> {Vars1, Var2, true};
+ _Thing -> {Vars1, Vars2, false}
+ end;
+ false -> {Vars1, Vars2, true}
+ end
+ end,
+ case IsList of
+ true ->
+ case cerl:type(NewVars1) of
+ var ->
+ case cerl:type(NewVars2) of
+ var ->
+ ALabel = cerl_trees:get_label(NewVars1),
+ PLabel = cerl_trees:get_label(NewVars2),
+ are_bound_labels(ALabel, PLabel, RaceVarMap) orelse
+ are_bound_labels(PLabel, ALabel, RaceVarMap);
+ alias ->
+ are_bound_vars(NewVars1, cerl:alias_var(NewVars2),
+ RaceVarMap);
+ values ->
+ are_bound_vars(NewVars1, cerl:values_es(NewVars2),
+ RaceVarMap);
+ _Other -> false
+ end;
+ tuple ->
+ case cerl:type(NewVars2) of
+ tuple ->
+ are_bound_vars(cerl:tuple_es(NewVars1),
+ cerl:tuple_es(NewVars2), RaceVarMap);
+ alias ->
+ are_bound_vars(NewVars1, cerl:alias_var(NewVars2),
+ RaceVarMap);
+ values ->
+ are_bound_vars(NewVars1, cerl:values_es(NewVars2),
+ RaceVarMap);
+ _Other -> false
+ end;
+ cons ->
+ case cerl:type(NewVars2) of
+ cons ->
+ are_bound_vars(cerl:cons_hd(NewVars1),
+ cerl:cons_hd(NewVars2), RaceVarMap)
+ andalso
+ are_bound_vars(cerl:cons_tl(NewVars1),
+ cerl:cons_tl(NewVars2), RaceVarMap);
+ alias ->
+ are_bound_vars(NewVars1, cerl:alias_var(NewVars2),
+ RaceVarMap);
+ values ->
+ are_bound_vars(NewVars1, cerl:values_es(NewVars2),
+ RaceVarMap);
+ _Other -> false
+ end;
+ alias ->
+ case cerl:type(NewVars2) of
+ alias ->
+ are_bound_vars(cerl:alias_var(NewVars1),
+ cerl:alias_var(NewVars2), RaceVarMap);
+ _Other ->
+ are_bound_vars(cerl:alias_var(NewVars1),
+ NewVars2, RaceVarMap)
+ end;
+ values ->
+ case cerl:type(NewVars2) of
+ values ->
+ are_bound_vars(cerl:values_es(NewVars1),
+ cerl:values_es(NewVars2), RaceVarMap);
+ _Other ->
+ are_bound_vars(cerl:values_es(NewVars1),
+ NewVars2, RaceVarMap)
+ end;
+ _Other -> false
+ end;
+ false -> false
+ end
+ end.
+
+callgraph__renew_tables(Table, Callgraph) ->
+ case Table of
+ {named, NameLabel, Names} ->
+ PTablesToAdd =
+ case NameLabel of
+ ?no_label -> [];
+ _Other -> [NameLabel]
+ end,
+ NamesToAdd = filter_named_tables(Names),
+ PTables = dialyzer_callgraph:get_public_tables(Callgraph),
+ NTables = dialyzer_callgraph:get_named_tables(Callgraph),
+ dialyzer_callgraph:put_public_tables(
+ lists:usort(PTablesToAdd ++ PTables),
+ dialyzer_callgraph:put_named_tables(
+ NamesToAdd ++ NTables, Callgraph));
+ _Other ->
+ Callgraph
+ end.
+
+cleanup_clause_code(#curr_fun{mfa = CurrFun} = CurrTuple, Code,
+ NestingLevel, LocalNestingLevel) ->
+ case Code of
+ [] -> {CurrTuple, []};
+ [Head|Tail] ->
+ {NewLocalNestingLevel, NewNestingLevel, NewCurrTuple, Return} =
+ case Head of
+ beg_case ->
+ {LocalNestingLevel, NestingLevel + 1, CurrTuple, false};
+ #end_case{} ->
+ {LocalNestingLevel, NestingLevel - 1, CurrTuple, false};
+ #end_clause{} ->
+ case NestingLevel =:= 0 of
+ true ->
+ {LocalNestingLevel, NestingLevel, CurrTuple, true};
+ false ->
+ {LocalNestingLevel, NestingLevel, CurrTuple, false}
+ end;
+ #fun_call{caller = CurrFun} ->
+ {LocalNestingLevel - 1, NestingLevel, CurrTuple, false};
+ #curr_fun{status = in} ->
+ {LocalNestingLevel - 1, NestingLevel, Head, false};
+ #curr_fun{status = out} ->
+ {LocalNestingLevel + 1, NestingLevel, Head, false};
+ Other when Other =/= #fun_call{} ->
+ {LocalNestingLevel, NestingLevel, CurrTuple, false}
+ end,
+ case Return of
+ true -> {NewCurrTuple, Tail};
+ false ->
+ cleanup_clause_code(NewCurrTuple, Tail, NewNestingLevel,
+ NewLocalNestingLevel)
+ end
+ end.
+
+cleanup_dep_calls(DepList) ->
+ case DepList of
+ [] -> [];
+ [#dep_call{call_name = CallName, arg_types = ArgTypes,
+ vars = Vars, state = State, file_line = FileLine}|T] ->
+ [#dep_call{call_name = CallName, arg_types = ArgTypes,
+ vars = Vars, state = State, file_line = FileLine}|
+ cleanup_dep_calls(T)]
+ end.
+
+cleanup_race_code(State) ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ dialyzer_dataflow:state__put_callgraph(
+ dialyzer_callgraph:race_code_new(Callgraph), State).
+
+filter_named_tables(NamesList) ->
+ case NamesList of
+ [] -> [];
+ [Head|Tail] ->
+ NewHead =
+ case string:rstr(Head, "()") of
+ 0 -> [Head];
+ _Other -> []
+ end,
+ NewHead ++ filter_named_tables(Tail)
+ end.
+
+filter_parents(Parents, NewParents, Digraph) ->
+ case Parents of
+ [] -> NewParents;
+ [Head|Tail] ->
+ NewParents1 = filter_parents_helper1(Head, Tail, NewParents, Digraph),
+ filter_parents(Tail, NewParents1, Digraph)
+ end.
+
+filter_parents_helper1(First, Rest, NewParents, Digraph) ->
+ case Rest of
+ [] -> NewParents;
+ [Head|Tail] ->
+ NewParents1 = filter_parents_helper2(First, Head, NewParents, Digraph),
+ filter_parents_helper1(First, Tail, NewParents1, Digraph)
+ end.
+
+filter_parents_helper2(Parent1, Parent2, NewParents, Digraph) ->
+ case digraph:get_path(Digraph, Parent1, Parent2) of
+ false ->
+ case digraph:get_path(Digraph, Parent2, Parent1) of
+ false -> NewParents;
+ _Vertices -> NewParents -- [Parent1]
+ end;
+ _Vertices -> NewParents -- [Parent2]
+ end.
+
+find_all_bound_vars(Label, RaceVarMap) ->
+ case dict:find(Label, RaceVarMap) of
+ error -> [Label];
+ {ok, Labels} ->
+ lists:usort(Labels ++
+ find_all_bound_vars_helper(Labels, Label, RaceVarMap))
+ end.
+
+find_all_bound_vars_helper(Labels, Label, RaceVarMap) ->
+ case dict:size(RaceVarMap) of
+ 0 -> [];
+ _ ->
+ case Labels of
+ [] -> [];
+ [Head|Tail] ->
+ NewRaceVarMap = dict:erase(Label, RaceVarMap),
+ find_all_bound_vars(Head, NewRaceVarMap) ++
+ find_all_bound_vars_helper(Tail, Head, NewRaceVarMap)
+ end
+ end.
+
+fixup_all_calls(CurrFun, NextFun, NextFunLabel, Args, CodeToReplace,
+ Code, RaceVarMap) ->
+ case Code of
+ [] -> [];
+ [Head|Tail] ->
+ NewCode =
+ case Head of
+ #fun_call{caller = CurrFun, callee = Callee,
+ arg_types = FunArgTypes, vars = FunArgs}
+ when Callee =:= NextFun orelse Callee =:= NextFunLabel ->
+ RaceVarMap1 = race_var_map(Args, FunArgs, RaceVarMap, bind),
+ [#curr_fun{status = in, mfa = NextFun, label = NextFunLabel,
+ var_map = RaceVarMap1, def_vars = Args,
+ call_vars = FunArgs, arg_types = FunArgTypes}|
+ CodeToReplace];
+ _Other -> [Head]
+ end,
+ RetCode =
+ fixup_all_calls(CurrFun, NextFun, NextFunLabel, Args, CodeToReplace,
+ Tail, RaceVarMap),
+ NewCode ++ RetCode
+ end.
+
+is_last_race(RaceTag, InitFun, Code, Callgraph) ->
+ case Code of
+ [] -> true;
+ [Head|Tail] ->
+ case Head of
+ RaceTag -> false;
+ #fun_call{callee = Fun} ->
+ FunName =
+ case is_integer(Fun) of
+ true ->
+ case dialyzer_callgraph:lookup_name(Fun, Callgraph) of
+ error -> Fun;
+ {ok, Name} -> Name
+ end;
+ false -> Fun
+ end,
+ Digraph = dialyzer_callgraph:get_digraph(Callgraph),
+ case FunName =:= InitFun orelse
+ digraph:get_path(Digraph, FunName, InitFun) of
+ false -> is_last_race(RaceTag, InitFun, Tail, Callgraph);
+ _Vertices -> false
+ end;
+ _Other -> is_last_race(RaceTag, InitFun, Tail, Callgraph)
+ end
+ end.
+
+lists_key_member(Member, List, N) when is_integer(Member) ->
+ case List of
+ [] -> 0;
+ [Head|Tail] ->
+ NewN = N + 1,
+ case Head of
+ Member -> NewN;
+ _Other -> lists_key_member(Member, Tail, NewN)
+ end
+ end;
+lists_key_member(_M, _L, _N) ->
+ 0.
+
+lists_key_member_lists(MemberList, List) ->
+ case MemberList of
+ [] -> 0;
+ [Head|Tail] ->
+ case lists_key_member(Head, List, 0) of
+ 0 -> lists_key_member_lists(Tail, List);
+ Other -> Other
+ end
+ end.
+
+lists_key_members_lists(MemberList, List) ->
+ case MemberList of
+ [] -> [];
+ [Head|Tail] ->
+ lists:usort(
+ lists_key_members_lists_helper(Head, List, 1) ++
+ lists_key_members_lists(Tail, List))
+ end.
+
+lists_key_members_lists_helper(Elem, List, N) when is_integer(Elem) ->
+ case List of
+ [] -> [];
+ [Head|Tail] ->
+ NewHead =
+ case Head =:= Elem of
+ true -> [N];
+ false -> []
+ end,
+ NewHead ++ lists_key_members_lists_helper(Elem, Tail, N + 1)
+ end;
+lists_key_members_lists_helper(_Elem, _List, _N) ->
+ [0].
+
+lists_key_replace(N, List, NewMember) ->
+ {Before, [_|After]} = lists:split(N - 1, List),
+ Before ++ [NewMember|After].
+
+lists_get(0, _List) -> ?no_label;
+lists_get(N, List) -> lists:nth(N, List).
+
+refine_race(RaceCall, WarnVarArgs, RaceWarnTag, DependencyList, RaceVarMap) ->
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ case RaceCall of
+ #dep_call{call_name = ets_lookup} ->
+ DependencyList;
+ #dep_call{call_name = mnesia_dirty_read} ->
+ DependencyList;
+ #dep_call{call_name = whereis, args = VarArgs} ->
+ refine_race_helper(RaceCall, VarArgs, WarnVarArgs, RaceWarnTag,
+ DependencyList, RaceVarMap)
+ end;
+ ?WARN_ETS_LOOKUP_INSERT ->
+ case RaceCall of
+ #dep_call{call_name = whereis} ->
+ DependencyList;
+ #dep_call{call_name = mnesia_dirty_read} ->
+ DependencyList;
+ #dep_call{call_name = ets_lookup, args = VarArgs} ->
+ refine_race_helper(RaceCall, VarArgs, WarnVarArgs, RaceWarnTag,
+ DependencyList, RaceVarMap)
+ end;
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ case RaceCall of
+ #dep_call{call_name = whereis} ->
+ DependencyList;
+ #dep_call{call_name = ets_lookup} ->
+ DependencyList;
+ #dep_call{call_name = mnesia_dirty_read, args = VarArgs} ->
+ refine_race_helper(RaceCall, VarArgs, WarnVarArgs, RaceWarnTag,
+ DependencyList, RaceVarMap)
+ end
+ end.
+
+refine_race_helper(RaceCall, VarArgs, WarnVarArgs, RaceWarnTag, DependencyList,
+ RaceVarMap) ->
+ case compare_types(VarArgs, WarnVarArgs, RaceWarnTag, RaceVarMap) of
+ true -> [RaceCall|DependencyList];
+ false -> DependencyList
+ end.
+
+remove_clause(RaceList, CurrTuple, Code, NestingLevel) ->
+ NewRaceList = fixup_case_rest_paths(RaceList, 0),
+ {NewCurrTuple, NewCode} =
+ cleanup_clause_code(CurrTuple, Code, 0, NestingLevel),
+ ReturnTuple = {NewRaceList, NewCurrTuple, NewCode, NestingLevel},
+ case NewRaceList of
+ [beg_case|RTail] ->
+ case NewCode of
+ [#end_case{}|CTail] ->
+ remove_clause(RTail, NewCurrTuple, CTail, NestingLevel);
+ _Other -> ReturnTuple
+ end;
+ _Else -> ReturnTuple
+ end.
+
+remove_nonlocal_functions(Code, NestingLevel) ->
+ case Code of
+ [] -> [];
+ [H|T] ->
+ NewNL =
+ case H of
+ #curr_fun{status = in} ->
+ NestingLevel + 1;
+ #curr_fun{status = out} ->
+ NestingLevel - 1;
+ _Other ->
+ NestingLevel
+ end,
+ case NewNL =:= 0 of
+ true -> T;
+ false -> remove_nonlocal_functions(T, NewNL)
+ end
+ end.
+
+renew_curr_fun(CurrFun, Races) ->
+ Races#races{curr_fun = CurrFun}.
+
+renew_curr_fun_label(CurrFunLabel, Races) ->
+ Races#races{curr_fun_label = CurrFunLabel}.
+
+renew_race_list(RaceList, Races) ->
+ Races#races{race_list = RaceList}.
+
+renew_race_list_size(RaceListSize, Races) ->
+ Races#races{race_list_size = RaceListSize}.
+
+renew_race_tags(RaceTags, Races) ->
+ Races#races{race_tags = RaceTags}.
+
+renew_table(Table, Races) ->
+ Races#races{new_table = Table}.
+
+state__renew_curr_fun(CurrFun, State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ dialyzer_dataflow:state__put_races(renew_curr_fun(CurrFun, Races), State).
+
+state__renew_curr_fun_label(CurrFunLabel, State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ dialyzer_dataflow:state__put_races(
+ renew_curr_fun_label(CurrFunLabel, Races), State).
+
+state__renew_race_list(RaceList, State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ dialyzer_dataflow:state__put_races(renew_race_list(RaceList, Races), State).
+
+state__renew_race_tags(RaceTags, State) ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ dialyzer_dataflow:state__put_races(renew_race_tags(RaceTags, Races), State).
+
+state__renew_info(RaceList, RaceListSize, RaceTags, Table, State) ->
+ Callgraph = dialyzer_dataflow:state__get_callgraph(State),
+ Races = dialyzer_dataflow:state__get_races(State),
+ dialyzer_dataflow:state__put_callgraph(
+ callgraph__renew_tables(Table, Callgraph),
+ dialyzer_dataflow:state__put_races(
+ renew_table(Table,
+ renew_race_list(RaceList,
+ renew_race_list_size(RaceListSize,
+ renew_race_tags(RaceTags, Races)))), State)).
+
+%%% ===========================================================================
+%%%
+%%% Variable and Type Utilities
+%%%
+%%% ===========================================================================
+
+any_args(StrList) ->
+ case StrList of
+ [] -> false;
+ [Head|Tail] ->
+ case string:rstr(Head, "()") of
+ 0 -> any_args(Tail);
+ _Other -> true
+ end
+ end.
+
+-spec bind_dict_vars(label(), label(), dict()) -> dict().
+
+bind_dict_vars(Key, Label, RaceVarMap) ->
+ case Key =:= Label of
+ true -> RaceVarMap;
+ false ->
+ case dict:find(Key, RaceVarMap) of
+ error -> dict:store(Key, [Label], RaceVarMap);
+ {ok, Labels} ->
+ case lists:member(Label, Labels) of
+ true -> RaceVarMap;
+ false -> dict:store(Key, [Label|Labels], RaceVarMap)
+ end
+ end
+ end.
+
+bind_dict_vars_list(Key, Labels, RaceVarMap) ->
+ case Labels of
+ [] -> RaceVarMap;
+ [Head|Tail] ->
+ bind_dict_vars_list(Key, Tail, bind_dict_vars(Key, Head, RaceVarMap))
+ end.
+
+compare_ets_insert(OldWarnVarArgs, NewWarnVarArgs, RaceVarMap) ->
+ [Old1, Old2, Old3, Old4] = OldWarnVarArgs,
+ [New1, New2, New3, New4] = NewWarnVarArgs,
+ Bool =
+ case any_args(Old2) of
+ true -> compare_var_list(New1, Old1, RaceVarMap);
+ false ->
+ case any_args(New2) of
+ true -> compare_var_list(New1, Old1, RaceVarMap);
+ false -> compare_var_list(New1, Old1, RaceVarMap)
+ orelse (Old2 =:= New2)
+ end
+ end,
+ case Bool of
+ true ->
+ case any_args(Old4) of
+ true ->
+ case compare_list_vars(Old3, ets_list_args(New3), [], RaceVarMap) of
+ true -> true;
+ Args3 -> lists_key_replace(3, OldWarnVarArgs, Args3)
+ end;
+ false ->
+ case any_args(New4) of
+ true ->
+ case compare_list_vars(Old3, ets_list_args(New3), [],
+ RaceVarMap) of
+ true -> true;
+ Args3 -> lists_key_replace(3, OldWarnVarArgs, Args3)
+ end;
+ false ->
+ case compare_list_vars(Old3, ets_list_args(New3), [],
+ RaceVarMap) of
+ true -> true;
+ Args3 ->
+ lists_key_replace(4,
+ lists_key_replace(3, OldWarnVarArgs, Args3), Old4 -- New4)
+ end
+ end
+ end;
+ false -> OldWarnVarArgs
+ end.
+
+compare_first_arg(OldWarnVarArgs, NewWarnVarArgs, RaceVarMap) ->
+ [Old1, Old2|_OldT] = OldWarnVarArgs,
+ [New1, New2|_NewT] = NewWarnVarArgs,
+ case any_args(Old2) of
+ true ->
+ case compare_var_list(New1, Old1, RaceVarMap) of
+ true -> true;
+ false -> OldWarnVarArgs
+ end;
+ false ->
+ case any_args(New2) of
+ true ->
+ case compare_var_list(New1, Old1, RaceVarMap) of
+ true -> true;
+ false -> OldWarnVarArgs
+ end;
+ false ->
+ case compare_var_list(New1, Old1, RaceVarMap) of
+ true -> true;
+ false -> lists_key_replace(2, OldWarnVarArgs, Old2 -- New2)
+ end
+ end
+ end.
+
+compare_argtypes(ArgTypes, WarnArgTypes) ->
+ lists:any(fun (X) -> lists:member(X, WarnArgTypes) end, ArgTypes).
+
+%% Compares the argument types of the two suspicious calls.
+compare_types(VarArgs, WarnVarArgs, RaceWarnTag, RaceVarMap) ->
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ [VA1, VA2] = VarArgs,
+ [WVA1, WVA2, _, _] = WarnVarArgs,
+ case any_args(VA2) of
+ true -> compare_var_list(VA1, WVA1, RaceVarMap);
+ false ->
+ case any_args(WVA2) of
+ true -> compare_var_list(VA1, WVA1, RaceVarMap);
+ false ->
+ compare_var_list(VA1, WVA1, RaceVarMap) orelse
+ compare_argtypes(VA2, WVA2)
+
+ end
+ end;
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [VA1, VA2, VA3, VA4] = VarArgs,
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs,
+ Bool =
+ case any_args(VA2) of
+ true -> compare_var_list(VA1, WVA1, RaceVarMap);
+ false ->
+ case any_args(WVA2) of
+ true -> compare_var_list(VA1, WVA1, RaceVarMap);
+ false ->
+ compare_var_list(VA1, WVA1, RaceVarMap) orelse
+ compare_argtypes(VA2, WVA2)
+ end
+ end,
+ Bool andalso
+ (case any_args(VA4) of
+ true ->
+ compare_var_list(VA3, WVA3, RaceVarMap);
+ false ->
+ case any_args(WVA4) of
+ true ->
+ compare_var_list(VA3, WVA3, RaceVarMap);
+ false ->
+ compare_var_list(VA3, WVA3, RaceVarMap)
+ orelse compare_argtypes(VA4, WVA4)
+ end
+ end);
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ [VA1, VA2|_] = VarArgs, %% Two or four elements
+ [WVA1, WVA2|_] = WarnVarArgs,
+ case any_args(VA2) of
+ true -> compare_var_list(VA1, WVA1, RaceVarMap);
+ false ->
+ case any_args(WVA2) of
+ true -> compare_var_list(VA1, WVA1, RaceVarMap);
+ false ->
+ compare_var_list(VA1, WVA1, RaceVarMap) orelse
+ compare_argtypes(VA2, WVA2)
+ end
+ end
+ end.
+
+compare_list_vars(VarList1, VarList2, NewVarList1, RaceVarMap) ->
+ case VarList1 of
+ [] ->
+ case NewVarList1 of
+ [] -> true;
+ _Other -> NewVarList1
+ end;
+ [Head|Tail] ->
+ NewHead =
+ case compare_var_list(Head, VarList2, RaceVarMap) of
+ true -> [];
+ false -> [Head]
+ end,
+ compare_list_vars(Tail, VarList2, NewHead ++ NewVarList1, RaceVarMap)
+ end.
+
+compare_vars(Var1, Var2, RaceVarMap) when is_integer(Var1), is_integer(Var2) ->
+ Var1 =:= Var2 orelse
+ are_bound_labels(Var1, Var2, RaceVarMap) orelse
+ are_bound_labels(Var2, Var1, RaceVarMap);
+compare_vars(_Var1, _Var2, _RaceVarMap) ->
+ false.
+
+-spec compare_var_list(label_type(), [label_type()], dict()) -> boolean().
+
+compare_var_list(Var, VarList, RaceVarMap) ->
+ lists:any(fun (V) -> compare_vars(Var, V, RaceVarMap) end, VarList).
+
+ets_list_args(MaybeList) ->
+ case is_list(MaybeList) of
+ true -> [ets_tuple_args(T) || T <- MaybeList];
+ false -> [ets_tuple_args(MaybeList)]
+ end.
+
+ets_list_argtypes(ListStr) ->
+ ListStr1 = string:strip(ListStr, left, $[),
+ ListStr2 = string:strip(ListStr1, right, $]),
+ ListStr3 = string:strip(ListStr2, right, $.),
+ string:strip(ListStr3, right, $,).
+
+ets_tuple_args(MaybeTuple) ->
+ case is_tuple(MaybeTuple) of
+ true -> element(1, MaybeTuple);
+ false -> ?no_label
+ end.
+
+ets_tuple_argtypes2(TupleList, ElemList) ->
+ case TupleList of
+ [] -> ElemList;
+ [H|T] ->
+ ets_tuple_argtypes2(T,
+ ets_tuple_argtypes2_helper(H, [], 0) ++ ElemList)
+ end.
+
+ets_tuple_argtypes2_helper(TupleStr, ElemStr, NestingLevel) ->
+ case TupleStr of
+ [] -> [];
+ [H|T] ->
+ {NewElemStr, NewNestingLevel, Return} =
+ case H of
+ ${ when NestingLevel =:= 0 ->
+ {ElemStr, NestingLevel + 1, false};
+ ${ ->
+ {[H|ElemStr], NestingLevel + 1, false};
+ $[ ->
+ {[H|ElemStr], NestingLevel + 1, false};
+ $( ->
+ {[H|ElemStr], NestingLevel + 1, false};
+ $} ->
+ {[H|ElemStr], NestingLevel - 1, false};
+ $] ->
+ {[H|ElemStr], NestingLevel - 1, false};
+ $) ->
+ {[H|ElemStr], NestingLevel - 1, false};
+ $, when NestingLevel =:= 1 ->
+ {lists:reverse(ElemStr), NestingLevel, true};
+ _Other ->
+ {[H|ElemStr], NestingLevel, false}
+ end,
+ case Return of
+ true -> string:tokens(NewElemStr, " |");
+ false ->
+ ets_tuple_argtypes2_helper(T, NewElemStr, NewNestingLevel)
+ end
+ end.
+
+ets_tuple_argtypes1(Str, Tuple, TupleList, NestingLevel) ->
+ case Str of
+ [] -> TupleList;
+ [H|T] ->
+ {NewTuple, NewNestingLevel, Add} =
+ case H of
+ ${ ->
+ {[H|Tuple], NestingLevel + 1, false};
+ $} ->
+ case NestingLevel of
+ 1 ->
+ {[H|Tuple], NestingLevel - 1, true};
+ _Else ->
+ {[H|Tuple], NestingLevel - 1, false}
+ end;
+ _Other1 when NestingLevel =:= 0 ->
+ {Tuple, NestingLevel, false};
+ _Other2 ->
+ {[H|Tuple], NestingLevel, false}
+ end,
+ case Add of
+ true ->
+ ets_tuple_argtypes1(T, [],
+ [lists:reverse(NewTuple)|TupleList],
+ NewNestingLevel);
+ false ->
+ ets_tuple_argtypes1(T, NewTuple, TupleList, NewNestingLevel)
+ end
+ end.
+
+format_arg(Arg) ->
+ case cerl:type(Arg) of
+ var -> cerl_trees:get_label(Arg);
+ tuple -> list_to_tuple([format_arg(A) || A <- cerl:tuple_es(Arg)]);
+ cons -> [format_arg(cerl:cons_hd(Arg))|format_arg(cerl:cons_tl(Arg))];
+ alias -> format_arg(cerl:alias_var(Arg));
+ literal ->
+ case cerl:is_c_nil(Arg) of
+ true -> [];
+ false -> ?no_label
+ end;
+ _Other -> ?no_label
+ end.
+
+-spec format_args([core_vars()], [erl_types:erl_type()],
+ dialyzer_dataflow:state(), call()) ->
+ args().
+
+format_args([], [], _State, _Call) ->
+ [];
+format_args(ArgList, TypeList, CleanState, Call) ->
+ format_args_2(format_args_1(ArgList, TypeList, CleanState), Call).
+
+format_args_1([Arg], [Type], CleanState) ->
+ [format_arg(Arg), format_type(Type, CleanState)];
+format_args_1([Arg|Args], [Type|Types], CleanState) ->
+ List =
+ case cerl:is_literal(Arg) of
+ true -> [?no_label, format_cerl(Arg)];
+ false -> [format_arg(Arg), format_type(Type, CleanState)]
+ end,
+ List ++ format_args_1(Args, Types, CleanState).
+
+format_args_2(StrArgList, Call) ->
+ case Call of
+ whereis ->
+ lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |"));
+ register ->
+ lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |"));
+ ets_new ->
+ StrArgList1 = lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |")),
+ lists_key_replace(4, StrArgList1,
+ string:tokens(ets_list_argtypes(lists:nth(4, StrArgList1)), " |"));
+ ets_lookup ->
+ StrArgList1 = lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |")),
+ lists_key_replace(4, StrArgList1,
+ string:tokens(lists:nth(4, StrArgList1), " |"));
+ ets_insert ->
+ StrArgList1 = lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |")),
+ lists_key_replace(4, StrArgList1,
+ ets_tuple_argtypes2(
+ ets_tuple_argtypes1(lists:nth(4, StrArgList1), [], [], 0),
+ []));
+ mnesia_dirty_read1 ->
+ lists_key_replace(2, StrArgList,
+ [mnesia_tuple_argtypes(T) || T <- string:tokens(
+ lists:nth(2, StrArgList), " |")]);
+ mnesia_dirty_read2 ->
+ lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |"));
+ mnesia_dirty_write1 ->
+ lists_key_replace(2, StrArgList,
+ [mnesia_record_tab(R) || R <- string:tokens(
+ lists:nth(2, StrArgList), " |")]);
+ mnesia_dirty_write2 ->
+ lists_key_replace(2, StrArgList,
+ string:tokens(lists:nth(2, StrArgList), " |"));
+ function_call -> StrArgList
+ end.
+
+format_cerl(Tree) ->
+ cerl_prettypr:format(cerl:set_ann(Tree, []),
+ [{hook, dialyzer_utils:pp_hook()},
+ {noann, true},
+ {paper, 100000},
+ {ribbon, 100000}
+ ]).
+
+format_type(Type, State) ->
+ R = dialyzer_dataflow:state__get_records(State),
+ erl_types:t_to_string(Type, R).
+
+mnesia_record_tab(RecordStr) ->
+ case string:str(RecordStr, "#") =:= 1 of
+ true ->
+ "'" ++
+ string:sub_string(RecordStr, 2, string:str(RecordStr, "{") - 1) ++
+ "'";
+ false -> RecordStr
+ end.
+
+mnesia_tuple_argtypes(TupleStr) ->
+ TupleStr1 = string:strip(TupleStr, left, ${),
+ [TupleStr2|_T] = string:tokens(TupleStr1, " ,"),
+ lists:flatten(string:tokens(TupleStr2, " |")).
+
+-spec race_var_map(var_to_map(), cerl:cerl() | [cerl:cerl()], dict(), op()) -> dict().
+
+race_var_map(Vars1, Vars2, RaceVarMap, Op) ->
+ case Vars1 =:= ?no_arg of
+ true -> RaceVarMap;
+ false ->
+ case is_list(Vars1) andalso is_list(Vars2) of
+ true ->
+ case Vars1 of
+ [] -> RaceVarMap;
+ [AHead|ATail] ->
+ case Vars2 of
+ [] -> RaceVarMap;
+ [PHead|PTail] ->
+ NewRaceVarMap = race_var_map(AHead, PHead, RaceVarMap, Op),
+ race_var_map(ATail, PTail, NewRaceVarMap, Op)
+ end
+ end;
+ false ->
+ {NewVars1, NewVars2, Bool} =
+ case is_list(Vars1) of
+ true ->
+ case Vars1 of
+ [Var1] -> {Var1, Vars2, true};
+ _Thing -> {Vars1, Vars2, false}
+ end;
+ false ->
+ case is_list(Vars2) of
+ true ->
+ case Vars2 of
+ [Var2] -> {Vars1, Var2, true};
+ _Thing -> {Vars1, Vars2, false}
+ end;
+ false -> {Vars1, Vars2, true}
+ end
+ end,
+ case Bool of
+ true ->
+ case cerl:type(NewVars1) of
+ var ->
+ case cerl:type(NewVars2) of
+ var ->
+ ALabel = cerl_trees:get_label(NewVars1),
+ PLabel = cerl_trees:get_label(NewVars2),
+ case Op of
+ bind ->
+ TempRaceVarMap =
+ bind_dict_vars(ALabel, PLabel, RaceVarMap),
+ bind_dict_vars(PLabel, ALabel, TempRaceVarMap);
+ unbind ->
+ TempRaceVarMap =
+ unbind_dict_vars(ALabel, PLabel, RaceVarMap),
+ unbind_dict_vars(PLabel, ALabel, TempRaceVarMap)
+ end;
+ alias ->
+ race_var_map(NewVars1, cerl:alias_var(NewVars2),
+ RaceVarMap, Op);
+ values ->
+ race_var_map(NewVars1, cerl:values_es(NewVars2),
+ RaceVarMap, Op);
+ _Other -> RaceVarMap
+ end;
+ tuple ->
+ case cerl:type(NewVars2) of
+ tuple ->
+ race_var_map(cerl:tuple_es(NewVars1),
+ cerl:tuple_es(NewVars2), RaceVarMap, Op);
+ alias ->
+ race_var_map(NewVars1, cerl:alias_var(NewVars2),
+ RaceVarMap, Op);
+ values ->
+ race_var_map(NewVars1, cerl:values_es(NewVars2),
+ RaceVarMap, Op);
+ _Other -> RaceVarMap
+ end;
+ cons ->
+ case cerl:type(NewVars2) of
+ cons ->
+ NewRaceVarMap = race_var_map(cerl:cons_hd(NewVars1),
+ cerl:cons_hd(NewVars2), RaceVarMap, Op),
+ race_var_map(cerl:cons_tl(NewVars1),
+ cerl:cons_tl(NewVars2), NewRaceVarMap, Op);
+ alias ->
+ race_var_map(NewVars1, cerl:alias_var(NewVars2),
+ RaceVarMap, Op);
+ values ->
+ race_var_map(NewVars1, cerl:values_es(NewVars2),
+ RaceVarMap, Op);
+ _Other -> RaceVarMap
+ end;
+ alias ->
+ case cerl:type(NewVars2) of
+ alias ->
+ race_var_map(cerl:alias_var(NewVars1),
+ cerl:alias_var(NewVars2), RaceVarMap, Op);
+ _Other ->
+ race_var_map(cerl:alias_var(NewVars1),
+ NewVars2, RaceVarMap, Op)
+ end;
+ values ->
+ case cerl:type(NewVars2) of
+ values ->
+ race_var_map(cerl:values_es(NewVars1),
+ cerl:values_es(NewVars2), RaceVarMap, Op);
+ _Other ->
+ race_var_map(cerl:values_es(NewVars1),
+ NewVars2, RaceVarMap, Op)
+ end;
+ _Other -> RaceVarMap
+ end;
+ false -> RaceVarMap
+ end
+ end
+ end.
+
+race_var_map_clauses(Clauses, RaceVarMap) ->
+ case Clauses of
+ [] -> RaceVarMap;
+ [#end_clause{arg = Arg, pats = Pats, guard = Guard}|T] ->
+ {RaceVarMap1, _RemoveClause} =
+ race_var_map_guard(Arg, Pats, Guard, RaceVarMap, bind),
+ race_var_map_clauses(T, RaceVarMap1)
+ end.
+
+race_var_map_guard(Arg, Pats, Guard, RaceVarMap, Op) ->
+ {NewRaceVarMap, RemoveClause} =
+ case cerl:type(Guard) of
+ call ->
+ CallName = cerl:call_name(Guard),
+ case cerl:is_literal(CallName) of
+ true ->
+ case cerl:concrete(CallName) of
+ '=:=' ->
+ [Arg1, Arg2] = cerl:call_args(Guard),
+ {race_var_map(Arg1, Arg2, RaceVarMap, Op), false};
+ '==' ->
+ [Arg1, Arg2] = cerl:call_args(Guard),
+ {race_var_map(Arg1, Arg2, RaceVarMap, Op), false};
+ '=/=' ->
+ case Op of
+ bind ->
+ [Arg1, Arg2] = cerl:call_args(Guard),
+ {RaceVarMap, are_bound_vars(Arg1, Arg2, RaceVarMap)};
+ unbind -> {RaceVarMap, false}
+ end;
+ _Other -> {RaceVarMap, false}
+ end;
+ false -> {RaceVarMap, false}
+ end;
+ _Other -> {RaceVarMap, false}
+ end,
+ {RaceVarMap1, RemoveClause1} =
+ race_var_map_guard_helper1(Arg, Pats,
+ race_var_map(Arg, Pats, NewRaceVarMap, Op), Op),
+ {RaceVarMap1, RemoveClause orelse RemoveClause1}.
+
+race_var_map_guard_helper1(Arg, Pats, RaceVarMap, Op) ->
+ case Arg =:= ?no_arg of
+ true -> {RaceVarMap, false};
+ false ->
+ case cerl:type(Arg) of
+ call ->
+ case Pats of
+ [NewPat] ->
+ ModName = cerl:call_module(Arg),
+ CallName = cerl:call_name(Arg),
+ case cerl:is_literal(ModName) andalso
+ cerl:is_literal(CallName) of
+ true ->
+ case {cerl:concrete(ModName),
+ cerl:concrete(CallName)} of
+ {erlang, '=:='} ->
+ race_var_map_guard_helper2(Arg, NewPat, true,
+ RaceVarMap, Op);
+ {erlang, '=='} ->
+ race_var_map_guard_helper2(Arg, NewPat, true,
+ RaceVarMap, Op);
+ {erlang, '=/='} ->
+ race_var_map_guard_helper2(Arg, NewPat, false,
+ RaceVarMap, Op);
+ _Else -> {RaceVarMap, false}
+ end;
+ false -> {RaceVarMap, false}
+ end;
+ _Other -> {RaceVarMap, false}
+ end;
+ _Other -> {RaceVarMap, false}
+ end
+ end.
+
+race_var_map_guard_helper2(Arg, Pat, Bool, RaceVarMap, Op) ->
+ case cerl:type(Pat) of
+ literal ->
+ [Arg1, Arg2] = cerl:call_args(Arg),
+ case cerl:concrete(Pat) of
+ Bool ->
+ {race_var_map(Arg1, Arg2, RaceVarMap, Op), false};
+ _Else ->
+ case Op of
+ bind ->
+ {RaceVarMap, are_bound_vars(Arg1, Arg2, RaceVarMap)};
+ unbind -> {RaceVarMap, false}
+ end
+ end;
+ _Else -> {RaceVarMap, false}
+ end.
+
+unbind_dict_vars(Var, Var, RaceVarMap) ->
+ RaceVarMap;
+unbind_dict_vars(Var1, Var2, RaceVarMap) ->
+ case dict:find(Var1, RaceVarMap) of
+ error -> RaceVarMap;
+ {ok, Labels} ->
+ case Labels of
+ [] -> dict:erase(Var1, RaceVarMap);
+ _Else ->
+ case lists:member(Var2, Labels) of
+ true ->
+ unbind_dict_vars(Var1, Var2,
+ bind_dict_vars_list(Var1, Labels -- [Var2],
+ dict:erase(Var1, RaceVarMap)));
+ false ->
+ unbind_dict_vars_helper(Labels, Var1, Var2, RaceVarMap)
+ end
+ end
+ end.
+
+unbind_dict_vars_helper(Labels, Key, CompLabel, RaceVarMap) ->
+ case dict:size(RaceVarMap) of
+ 0 -> RaceVarMap;
+ _ ->
+ case Labels of
+ [] -> RaceVarMap;
+ [Head|Tail] ->
+ NewRaceVarMap =
+ case are_bound_labels(Head, CompLabel, RaceVarMap) orelse
+ are_bound_labels(CompLabel, Head, RaceVarMap) of
+ true ->
+ bind_dict_vars_list(Key, Labels -- [Head],
+ dict:erase(Key, RaceVarMap));
+ false -> RaceVarMap
+ end,
+ unbind_dict_vars_helper(Tail, Key, CompLabel, NewRaceVarMap)
+ end
+ end.
+
+var_analysis(FunDefArgs, FunCallArgs, WarnVarArgs, RaceWarnTag) ->
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs,
+ ArgNos = lists_key_members_lists(WVA1, FunDefArgs),
+ [[lists_get(N, FunCallArgs) || N <- ArgNos], WVA2, WVA3, WVA4];
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs,
+ ArgNos1 = lists_key_members_lists(WVA1, FunDefArgs),
+ ArgNos2 = lists_key_members_lists(WVA3, FunDefArgs),
+ [[lists_get(N1, FunCallArgs) || N1 <- ArgNos1], WVA2,
+ [lists_get(N2, FunCallArgs) || N2 <- ArgNos2], WVA4];
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ [WVA1, WVA2|T] = WarnVarArgs,
+ ArgNos = lists_key_members_lists(WVA1, FunDefArgs),
+ [[lists_get(N, FunCallArgs) || N <- ArgNos], WVA2|T]
+ end.
+
+var_type_analysis(FunDefArgs, FunCallTypes, WarnVarArgs, RaceWarnTag,
+ RaceVarMap, CleanState) ->
+ FunVarArgs = format_args(FunDefArgs, FunCallTypes, CleanState,
+ function_call),
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs,
+ Vars = find_all_bound_vars(WVA1, RaceVarMap),
+ case lists_key_member_lists(Vars, FunVarArgs) of
+ 0 -> [Vars, WVA2, WVA3, WVA4];
+ N when is_integer(N) ->
+ NewWVA2 = string:tokens(lists:nth(N + 1, FunVarArgs), " |"),
+ [Vars, NewWVA2, WVA3, WVA4]
+ end;
+ ?WARN_ETS_LOOKUP_INSERT ->
+ [WVA1, WVA2, WVA3, WVA4] = WarnVarArgs,
+ Vars1 = find_all_bound_vars(WVA1, RaceVarMap),
+ FirstVarArg =
+ case lists_key_member_lists(Vars1, FunVarArgs) of
+ 0 -> [Vars1, WVA2];
+ N1 when is_integer(N1) ->
+ NewWVA2 = string:tokens(lists:nth(N1 + 1, FunVarArgs), " |"),
+ [Vars1, NewWVA2]
+ end,
+ Vars2 =
+ lists:flatten(
+ [find_all_bound_vars(A, RaceVarMap) || A <- ets_list_args(WVA3)]),
+ case lists_key_member_lists(Vars2, FunVarArgs) of
+ 0 -> FirstVarArg ++ [Vars2, WVA4];
+ N2 when is_integer(N2) ->
+ NewWVA4 =
+ ets_tuple_argtypes2(
+ ets_tuple_argtypes1(lists:nth(N2 + 1, FunVarArgs), [], [], 0),
+ []),
+ FirstVarArg ++ [Vars2, NewWVA4]
+
+ end;
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ [WVA1, WVA2|T] = WarnVarArgs,
+ Arity =
+ case T of
+ [] -> 1;
+ _Else -> 2
+ end,
+ Vars = find_all_bound_vars(WVA1, RaceVarMap),
+ case lists_key_member_lists(Vars, FunVarArgs) of
+ 0 -> [Vars, WVA2|T];
+ N when is_integer(N) ->
+ NewWVA2 =
+ case Arity of
+ 1 ->
+ [mnesia_record_tab(R) || R <- string:tokens(
+ lists:nth(2, FunVarArgs), " |")];
+ 2 ->
+ string:tokens(lists:nth(N + 1, FunVarArgs), " |")
+ end,
+ [Vars, NewWVA2|T]
+ end
+ end.
+
+%%% ===========================================================================
+%%%
+%%% Warning Format Utilities
+%%%
+%%% ===========================================================================
+
+add_race_warning(Warn, #races{race_warnings = Warns} = Races) ->
+ Races#races{race_warnings = [Warn|Warns]}.
+
+get_race_warn(Fun, Args, ArgTypes, DepList, State) ->
+ {M, F, _A} = Fun,
+ case DepList of
+ [] -> {State, no_race};
+ _Other ->
+ {State, {race_condition, [M, F, Args, ArgTypes, State, DepList]}}
+ end.
+
+-spec get_race_warnings(races(), dialyzer_dataflow:state()) ->
+ {races(), dialyzer_dataflow:state()}.
+
+get_race_warnings(#races{race_warnings = RaceWarnings}, State) ->
+ get_race_warnings_helper(RaceWarnings, State).
+
+get_race_warnings_helper(Warnings, State) ->
+ case Warnings of
+ [] ->
+ {dialyzer_dataflow:state__get_races(State), State};
+ [H|T] ->
+ {RaceWarnTag, FileLine, {race_condition, [M, F, A, AT, S, DepList]}} = H,
+ Reason =
+ case RaceWarnTag of
+ ?WARN_WHEREIS_REGISTER ->
+ get_reason(lists:keysort(7, DepList),
+ "might fail due to a possible race condition "
+ "caused by its combination with ");
+ ?WARN_ETS_LOOKUP_INSERT ->
+ get_reason(lists:keysort(7, DepList),
+ "might have an unintended effect due to " ++
+ "a possible race condition " ++
+ "caused by its combination with ");
+ ?WARN_MNESIA_DIRTY_READ_WRITE ->
+ get_reason(lists:keysort(7, DepList),
+ "might have an unintended effect due to " ++
+ "a possible race condition " ++
+ "caused by its combination with ")
+ end,
+ W =
+ {?WARN_RACE_CONDITION, FileLine,
+ {race_condition,
+ [M, F, dialyzer_dataflow:format_args(A, AT, S), Reason]}},
+ get_race_warnings_helper(T,
+ dialyzer_dataflow:state__add_warning(W, State))
+ end.
+
+get_reason(DependencyList, Reason) ->
+ case DependencyList of
+ [] -> "";
+ [#dep_call{call_name = Call, arg_types = ArgTypes, vars = Args,
+ state = State, file_line = {File, Line}}|T] ->
+ R =
+ Reason ++
+ case Call of
+ whereis -> "the erlang:whereis";
+ ets_lookup -> "the ets:lookup";
+ mnesia_dirty_read -> "the mnesia:dirty_read"
+ end ++
+ dialyzer_dataflow:format_args(Args, ArgTypes, State) ++
+ " call in " ++
+ filename:basename(File) ++
+ " on line " ++
+ lists:flatten(io_lib:write(Line)),
+ case T of
+ [] -> R;
+ _ -> get_reason(T, R ++ ", ")
+ end
+ end.
+
+state__add_race_warning(State, RaceWarn, RaceWarnTag, FileLine) ->
+ case RaceWarn of
+ no_race -> State;
+ _Else ->
+ Races = dialyzer_dataflow:state__get_races(State),
+ Warn = {RaceWarnTag, FileLine, RaceWarn},
+ dialyzer_dataflow:state__put_races(add_race_warning(Warn, Races), State)
+ end.
+
+%%% ===========================================================================
+%%%
+%%% Record Interfaces
+%%%
+%%% ===========================================================================
+
+-spec beg_clause_new(var_to_map(), var_to_map(), cerl:cerl()) ->
+ #beg_clause{}.
+
+beg_clause_new(Arg, Pats, Guard) ->
+ #beg_clause{arg = Arg, pats = Pats, guard = Guard}.
+
+-spec cleanup(races()) -> races().
+
+cleanup(#races{race_list = RaceList}) ->
+ #races{race_list = RaceList}.
+
+-spec end_case_new([#end_clause{}]) -> #end_case{}.
+
+end_case_new(Clauses) ->
+ #end_case{clauses = Clauses}.
+
+-spec end_clause_new(var_to_map(), var_to_map(), cerl:cerl()) ->
+ #end_clause{}.
+
+end_clause_new(Arg, Pats, Guard) ->
+ #end_clause{arg = Arg, pats = Pats, guard = Guard}.
+
+-spec get_curr_fun(races()) -> mfa_or_funlbl().
+
+get_curr_fun(#races{curr_fun = CurrFun}) ->
+ CurrFun.
+
+-spec get_curr_fun_args(races()) -> core_args().
+
+get_curr_fun_args(#races{curr_fun_args = CurrFunArgs}) ->
+ CurrFunArgs.
+
+-spec get_new_table(races()) -> table().
+
+get_new_table(#races{new_table = Table}) ->
+ Table.
+
+-spec get_race_analysis(races()) -> boolean().
+
+get_race_analysis(#races{race_analysis = RaceAnalysis}) ->
+ RaceAnalysis.
+
+-spec get_race_list(races()) -> code().
+
+get_race_list(#races{race_list = RaceList}) ->
+ RaceList.
+
+-spec get_race_list_size(races()) -> non_neg_integer().
+
+get_race_list_size(#races{race_list_size = RaceListSize}) ->
+ RaceListSize.
+
+-spec let_tag_new(var_to_map(), var_to_map()) -> #let_tag{}.
+
+let_tag_new(Var, Arg) ->
+ #let_tag{var = Var, arg = Arg}.
+
+-spec new() -> races().
+
+new() -> #races{}.
+
+-spec put_curr_fun(mfa_or_funlbl(), label(), races()) ->
+ races().
+
+put_curr_fun(CurrFun, CurrFunLabel, Races) ->
+ Races#races{curr_fun = CurrFun,
+ curr_fun_label = CurrFunLabel,
+ curr_fun_args = empty}.
+
+-spec put_fun_args(core_args(), races()) -> races().
+
+put_fun_args(Args, #races{curr_fun_args = CurrFunArgs} = Races) ->
+ case CurrFunArgs of
+ empty -> Races#races{curr_fun_args = Args};
+ _Other -> Races
+ end.
+
+-spec put_race_analysis(boolean(), races()) ->
+ races().
+
+put_race_analysis(Analysis, Races) ->
+ Races#races{race_analysis = Analysis}.
+
+-spec put_race_list(code(), non_neg_integer(), races()) ->
+ races().
+
+put_race_list(RaceList, RaceListSize, Races) ->
+ Races#races{race_list = RaceList,
+ race_list_size = RaceListSize}.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 22:42:37 +0000