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authorHans Bolinder <[email protected]>2016-12-09 16:16:11 +0100
committerHans Bolinder <[email protected]>2017-01-11 09:34:59 +0100
commit7a6ea7e9946e72a03167145c476e66ee77098b6e (patch)
tree173a4689b82de0835073929c414a026cf029de52 /lib/dialyzer/src
parent7f3b77274958b62523e83ab2b37ad29ec9a6cf3c (diff)
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dialyzer: Optimize memory consumption
Some SCC info is no longer cached. It reduces the peak memory consumption of workers during the typesig phase, and seems to cost very little time.
Diffstat (limited to 'lib/dialyzer/src')
-rw-r--r--lib/dialyzer/src/dialyzer_analysis_callgraph.erl4
-rw-r--r--lib/dialyzer/src/dialyzer_codeserver.erl10
-rw-r--r--lib/dialyzer/src/dialyzer_contracts.erl2
-rw-r--r--lib/dialyzer/src/dialyzer_succ_typings.erl22
-rw-r--r--lib/dialyzer/src/dialyzer_typesig.erl50
5 files changed, 50 insertions, 38 deletions
diff --git a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl
index 8b3f70aa23..c8129cfbaa 100644
--- a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl
+++ b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl
@@ -121,6 +121,7 @@ loop(#server_state{parent = Parent} = State,
%% The Analysis
%%--------------------------------------------------------------------
+%% Calls to erlang:garbage_collect() help to reduce the heap size.
analysis_start(Parent, Analysis, LegalWarnings) ->
CServer = dialyzer_codeserver:new(),
Plt = Analysis#analysis.plt,
@@ -157,6 +158,7 @@ analysis_start(Parent, Analysis, LegalWarnings) ->
TmpCServer1 = dialyzer_codeserver:set_temp_records(MergedRecords, TmpCServer0),
TmpCServer2 =
dialyzer_codeserver:finalize_exported_types(MergedExpTypes, TmpCServer1),
+ erlang:garbage_collect(),
?timing(State#analysis_state.timing_server, "remote",
begin
TmpCServer3 =
@@ -185,8 +187,6 @@ analysis_start(Parent, Analysis, LegalWarnings) ->
true -> dialyzer_callgraph:put_race_detection(true, Callgraph);
false -> Callgraph
end,
- %% Calls to erlang:garbage_collect() help to reduce the heap size.
- %% An alternative is to spawn more processes to do the job(s).
erlang:garbage_collect(),
State2 = analyze_callgraph(NewCallgraph, State1),
#analysis_state{plt = MiniPlt2, doc_plt = DocPlt} = State2,
diff --git a/lib/dialyzer/src/dialyzer_codeserver.erl b/lib/dialyzer/src/dialyzer_codeserver.erl
index 03cd9671af..5028c4f3ba 100644
--- a/lib/dialyzer/src/dialyzer_codeserver.erl
+++ b/lib/dialyzer/src/dialyzer_codeserver.erl
@@ -48,6 +48,7 @@
is_exported/2,
lookup_mod_code/2,
lookup_mfa_code/2,
+ lookup_mfa_var_label/2,
lookup_mod_records/2,
lookup_mod_contracts/2,
lookup_mfa_contract/2,
@@ -173,8 +174,8 @@ insert(Mod, ModCode, CS) ->
As = cerl:get_ann(ModCode),
Funs =
[{{Mod, cerl:fname_id(Var), cerl:fname_arity(Var)},
- Val} || Val = {Var, _Fun} <- Defs],
- Keys = [Key || {Key, _Value} <- Funs],
+ Val, {Var, cerl_trees:get_label(Fun)}} || Val = {Var, Fun} <- Defs],
+ Keys = [Key || {Key, _Value, _Label} <- Funs],
ModEntry = {Mod, {Name, Exports, Attrs, Keys, As}},
true = ets:insert(CS#codeserver.code, [ModEntry|Funs]),
CS.
@@ -237,6 +238,11 @@ lookup_mod_code(Mod, CS) when is_atom(Mod) ->
lookup_mfa_code({_M, _F, _A} = MFA, CS) ->
table__lookup(CS#codeserver.code, MFA).
+-spec lookup_mfa_var_label(mfa(), codeserver()) -> {cerl:c_var(), label()}.
+
+lookup_mfa_var_label({_M, _F, _A} = MFA, CS) ->
+ ets:lookup_element(CS#codeserver.code, MFA, 3).
+
-spec get_next_core_label(codeserver()) -> label().
get_next_core_label(#codeserver{next_core_label = NCL}) ->
diff --git a/lib/dialyzer/src/dialyzer_contracts.erl b/lib/dialyzer/src/dialyzer_contracts.erl
index 82275d5df7..2cca16d085 100644
--- a/lib/dialyzer/src/dialyzer_contracts.erl
+++ b/lib/dialyzer/src/dialyzer_contracts.erl
@@ -176,7 +176,7 @@ process_contract_remote_types(CodeServer) ->
NewCallbackList = lists:map(ModuleFun, dict:to_list(TmpCallbackDict)),
NewContractDict = dict:from_list(NewContractList),
NewCallbackDict = dict:from_list(NewCallbackList),
- %% Make sure the (huge) cache is garbage collected:
+ %% Make sure temporary data and the (huge) cache are garbage collected:
erlang:garbage_collect(),
dialyzer_codeserver:finalize_contracts(NewContractDict, NewCallbackDict,
CodeServer).
diff --git a/lib/dialyzer/src/dialyzer_succ_typings.erl b/lib/dialyzer/src/dialyzer_succ_typings.erl
index 986def52bf..d92173875c 100644
--- a/lib/dialyzer/src/dialyzer_succ_typings.erl
+++ b/lib/dialyzer/src/dialyzer_succ_typings.erl
@@ -349,21 +349,25 @@ find_succ_typings(SCCs, #st{codeserver = Codeserver, callgraph = Callgraph,
-spec find_succ_types_for_scc(scc(), typesig_init_data()) -> [mfa_or_funlbl()].
-find_succ_types_for_scc(SCC, {Codeserver, Callgraph, Plt, Solvers}) ->
- SCC_Info = [{MFA,
- dialyzer_codeserver:lookup_mfa_code(MFA, Codeserver),
- dialyzer_codeserver:lookup_mod_records(M, Codeserver)}
- || {M, _, _} = MFA <- SCC],
+find_succ_types_for_scc(SCC0, {Codeserver, Callgraph, Plt, Solvers}) ->
+ SCC = [MFA || {_, _, _} = MFA <- SCC0],
Contracts1 = [{MFA, dialyzer_codeserver:lookup_mfa_contract(MFA, Codeserver)}
- || {_, _, _} = MFA <- SCC],
+ || MFA <- SCC],
Contracts2 = [{MFA, Contract} || {MFA, {ok, Contract}} <- Contracts1],
Contracts3 = orddict:from_list(Contracts2),
Label = dialyzer_codeserver:get_next_core_label(Codeserver),
- AllFuns = collect_fun_info([Fun || {_MFA, {_Var, Fun}, _Rec} <- SCC_Info]),
+ AllFuns = lists:append(
+ [begin
+ {_Var, Fun} =
+ dialyzer_codeserver:lookup_mfa_code(MFA, Codeserver),
+ collect_fun_info([Fun])
+ end || MFA <- SCC]),
+ erlang:garbage_collect(),
PropTypes = get_fun_types_from_plt(AllFuns, Callgraph, Plt),
%% Assume that the PLT contains the current propagated types
- FunTypes = dialyzer_typesig:analyze_scc(SCC_Info, Label, Callgraph,
- Plt, PropTypes, Solvers),
+ FunTypes = dialyzer_typesig:analyze_scc(SCC, Label, Callgraph,
+ Codeserver, Plt, PropTypes,
+ Solvers),
AllFunSet = sets:from_list([X || {X, _} <- AllFuns]),
FilteredFunTypes =
dict:filter(fun(X, _) -> sets:is_element(X, AllFunSet) end, FunTypes),
diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl
index 1787b66192..075b6ee165 100644
--- a/lib/dialyzer/src/dialyzer_typesig.erl
+++ b/lib/dialyzer/src/dialyzer_typesig.erl
@@ -29,7 +29,7 @@
-module(dialyzer_typesig).
--export([analyze_scc/6]).
+-export([analyze_scc/7]).
-export([get_safe_underapprox/2]).
%%-import(helper, %% 'helper' could be any module doing sanity checks...
@@ -101,7 +101,6 @@
-type types() :: erl_types:type_table().
--type typesig_scc() :: [{mfa(), {cerl:c_var(), cerl:c_fun()}, types()}].
-type typesig_funmap() :: #{type_var() => type_var()}.
-type prop_types() :: dict:dict(label(), types()).
@@ -160,11 +159,10 @@
%%-----------------------------------------------------------------------------
%% Analysis of strongly connected components.
%%
-%% analyze_scc(SCC, NextLabel, CallGraph, PLT, PropTypes, Solvers) -> FunTypes
+%% analyze_scc(SCC, NextLabel, CallGraph, CodeServer,
+%% PLT, PropTypes, Solvers) -> FunTypes
%%
-%% SCC - [{MFA, Def, Records}]
-%% where Def = {Var, Fun} as in the Core Erlang module definitions.
-%% Records = dict(RecName, {Arity, [{FieldName, FieldType}]})
+%% SCC - [{MFA}]
%% NextLabel - An integer that is higher than any label in the code.
%% CallGraph - A callgraph as produced by dialyzer_callgraph.erl
%% Note: The callgraph must have been built with all the
@@ -176,28 +174,27 @@
%% Solvers - User specified solvers.
%%-----------------------------------------------------------------------------
--spec analyze_scc(typesig_scc(), label(),
+-spec analyze_scc([mfa()], label(),
dialyzer_callgraph:callgraph(),
+ dialyzer_codeserver:codeserver(),
dialyzer_plt:plt(), prop_types(), [solver()]) -> prop_types().
-analyze_scc(SCC, NextLabel, CallGraph, Plt, PropTypes, Solvers0) ->
+analyze_scc(SCC, NextLabel, CallGraph, CServer, Plt, PropTypes, Solvers0) ->
Solvers = solvers(Solvers0),
- assert_format_of_scc(SCC),
- State1 = new_state(SCC, NextLabel, CallGraph, Plt, PropTypes, Solvers),
- DefSet = add_def_list([Var || {_MFA, {Var, _Fun}, _Rec} <- SCC], sets:new()),
- State2 = traverse_scc(SCC, DefSet, State1),
+ State1 = new_state(SCC, NextLabel, CallGraph, CServer, Plt, PropTypes,
+ Solvers),
+ DefSet = add_def_list(maps:values(State1#state.name_map), sets:new()),
+ ModRecs = [{M, dialyzer_codeserver:lookup_mod_records(M, CServer)} ||
+ M <- lists:usort([M || {M, _, _} <- SCC])],
+ State2 = traverse_scc(SCC, CServer, DefSet, ModRecs, State1),
State3 = state__finalize(State2),
+ erlang:garbage_collect(),
Funs = state__scc(State3),
pp_constrs_scc(Funs, State3),
constraints_to_dot_scc(Funs, State3),
T = solve(Funs, State3),
dict:from_list(maps:to_list(T)).
-assert_format_of_scc([{_MFA, {_Var, _Fun}, _Records}|Left]) ->
- assert_format_of_scc(Left);
-assert_format_of_scc([]) ->
- ok.
-
solvers([]) -> [v2];
solvers(Solvers) -> Solvers.
@@ -207,12 +204,14 @@ solvers(Solvers) -> Solvers.
%%
%% ============================================================================
-traverse_scc([{_MFA, Def, Rec}|Left], DefSet, AccState) ->
+traverse_scc([{M,_,_}=MFA|Left], Codeserver, DefSet, ModRecs, AccState) ->
+ Def = dialyzer_codeserver:lookup_mfa_code(MFA, Codeserver),
+ {M, Rec} = lists:keyfind(M, 1, ModRecs),
TmpState1 = state__set_rec_dict(AccState, Rec),
DummyLetrec = cerl:c_letrec([Def], cerl:c_atom(foo)),
{NewAccState, _} = traverse(DummyLetrec, DefSet, TmpState1),
- traverse_scc(Left, DefSet, NewAccState);
-traverse_scc([], _DefSet, AccState) ->
+ traverse_scc(Left, Codeserver, DefSet, ModRecs, NewAccState);
+traverse_scc([], _Codeserver, _DefSet, _ModRecs, AccState) ->
AccState.
traverse(Tree, DefinedVars, State) ->
@@ -2702,11 +2701,14 @@ pp_map(_S, _Map) ->
%%
%% ============================================================================
-new_state(SCC0, NextLabel, CallGraph, Plt, PropTypes, Solvers) ->
- List = [{MFA, Var} || {MFA, {Var, _Fun}, _Rec} <- SCC0],
+new_state(MFAs, NextLabel, CallGraph, CServer, Plt, PropTypes, Solvers) ->
+ List_SCC =
+ [begin
+ {Var, Label} = dialyzer_codeserver:lookup_mfa_var_label(MFA, CServer),
+ {{MFA, Var}, t_var(Label)}
+ end || MFA <- MFAs],
+ {List, SCC} = lists:unzip(List_SCC),
NameMap = maps:from_list(List),
- MFAs = [MFA || {MFA, _Var} <- List],
- SCC = [mk_var(Fun) || {_MFA, {_Var, Fun}, _Rec} <- SCC0],
SelfRec =
case SCC of
[OneF] ->