diff options
Diffstat (limited to 'lib/dialyzer/src/dialyzer_callgraph.erl')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_callgraph.erl | 59 |
1 files changed, 39 insertions, 20 deletions
diff --git a/lib/dialyzer/src/dialyzer_callgraph.erl b/lib/dialyzer/src/dialyzer_callgraph.erl index b9ad3f857d..00b01fbd36 100644 --- a/lib/dialyzer/src/dialyzer_callgraph.erl +++ b/lib/dialyzer/src/dialyzer_callgraph.erl @@ -2,7 +2,7 @@ %%----------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2013. All Rights Reserved. +%% Copyright Ericsson AB 2006-2014. 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 @@ -35,6 +35,7 @@ is_escaping/2, is_self_rec/2, non_local_calls/1, + lookup_letrec/2, lookup_rec_var/2, lookup_call_site/2, lookup_label/2, @@ -63,14 +64,16 @@ put_named_tables/2, put_public_tables/2, put_behaviour_api_calls/2, get_behaviour_api_calls/1, dispose_race_server/1, duplicate/1]). --export_type([callgraph/0, mfa_or_funlbl/0, callgraph_edge/0]). +-export_type([callgraph/0, mfa_or_funlbl/0, callgraph_edge/0, mod_deps/0]). -include("dialyzer.hrl"). %%---------------------------------------------------------------------- -type scc() :: [mfa_or_funlbl()]. --type mfa_calls() :: [{mfa_or_funlbl(), mfa_or_funlbl()}]. +-type mfa_call() :: {mfa_or_funlbl(), mfa_or_funlbl()}. +-type mfa_calls() :: [mfa_call()]. +-type mod_deps() :: dict:dict(module(), [module()]). %%----------------------------------------------------------------------------- %% A callgraph is a directed graph where the nodes are functions and a @@ -81,6 +84,8 @@ %% digraph - A digraph representing the callgraph. %% Nodes are represented as MFAs or labels. %% esc - A set of all escaping functions as reported by dialyzer_dep. +%% letrec_map - A dict mapping from letrec bound labels to function labels. +%% Includes all functions. %% name_map - A mapping from label to MFA. %% rev_name_map - A reverse mapping of the name_map. %% rec_var_map - A dict mapping from letrec bound labels to function names. @@ -90,9 +95,10 @@ %% whenever applicable. %%----------------------------------------------------------------------------- --record(callgraph, {digraph = digraph:new() :: digraph(), +-record(callgraph, {digraph = digraph:new() :: digraph:graph(), active_digraph :: active_digraph(), esc :: ets:tid(), + letrec_map :: ets:tid(), name_map :: ets:tid(), rev_name_map :: ets:tid(), rec_var_map :: ets:tid(), @@ -101,7 +107,7 @@ race_detection = false :: boolean(), race_data_server = new_race_data_server() :: pid()}). --record(race_data_state, {race_code = dict:new() :: dict(), +-record(race_data_state, {race_code = dict:new() :: dict:dict(), public_tables = [] :: [label()], named_tables = [] :: [string()], beh_api_calls = [] :: [{mfa(), mfa()}]}). @@ -110,18 +116,19 @@ -type callgraph() :: #callgraph{}. --type active_digraph() :: {'d', digraph()} | {'e', ets:tid(), ets:tid()}. +-type active_digraph() :: {'d', digraph:graph()} | {'e', ets:tid(), ets:tid()}. %%---------------------------------------------------------------------- -spec new() -> callgraph(). new() -> - [ETSEsc, ETSNameMap, ETSRevNameMap, ETSRecVarMap, ETSSelfRec, ETSCalls] = + [ETSEsc, ETSNameMap, ETSRevNameMap, ETSRecVarMap, ETSLetrecMap, ETSSelfRec, ETSCalls] = [ets:new(N,[public, {read_concurrency, true}]) || N <- [callgraph_esc, callgraph_name_map, callgraph_rev_name_map, - callgraph_rec_var_map, callgraph_self_rec, callgraph_calls]], + callgraph_rec_var_map, callgraph_letrec_map, callgraph_self_rec, callgraph_calls]], #callgraph{esc = ETSEsc, + letrec_map = ETSLetrecMap, name_map = ETSNameMap, rev_name_map = ETSRevNameMap, rec_var_map = ETSRecVarMap, @@ -144,6 +151,12 @@ lookup_rec_var(Label, #callgraph{rec_var_map = RecVarMap}) when is_integer(Label) -> ets_lookup_dict(Label, RecVarMap). +-spec lookup_letrec(label(), callgraph()) -> 'error' | {'ok', label()}. + +lookup_letrec(Label, #callgraph{letrec_map = LetrecMap}) + when is_integer(Label) -> + ets_lookup_dict(Label, LetrecMap). + -spec lookup_call_site(label(), callgraph()) -> 'error' | {'ok', [_]}. % XXX: refine lookup_call_site(Label, #callgraph{calls = Calls}) @@ -211,7 +224,10 @@ non_local_calls(#callgraph{digraph = DG}) -> Edges = digraph_edges(DG), find_non_local_calls(Edges, sets:new()). --spec find_non_local_calls([{mfa_or_funlbl(), mfa_or_funlbl()}], set()) -> mfa_calls(). +-type call_tab() :: sets:set(mfa_call()). + +-spec find_non_local_calls([{mfa_or_funlbl(), mfa_or_funlbl()}], call_tab()) -> + mfa_calls(). find_non_local_calls([{{M,_,_}, {M,_,_}}|Left], Set) -> find_non_local_calls(Left, Set); @@ -256,7 +272,7 @@ get_required_by(SCC, #callgraph{active_digraph = {'d', DG}}) -> modules(#callgraph{digraph = DG}) -> ordsets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]). --spec module_postorder(callgraph()) -> {[module()], {'d', digraph()}}. +-spec module_postorder(callgraph()) -> {[module()], {'d', digraph:graph()}}. module_postorder(#callgraph{digraph = DG}) -> Edges = lists:foldl(fun edge_fold/2, sets:new(), digraph_edges(DG)), @@ -276,7 +292,7 @@ edge_fold(_, Set) -> Set. %% The module deps of a module are modules that depend on the module --spec module_deps(callgraph()) -> dict(). +-spec module_deps(callgraph()) -> mod_deps(). module_deps(#callgraph{digraph = DG}) -> Edges = lists:foldl(fun edge_fold/2, sets:new(), digraph_edges(DG)), @@ -290,7 +306,7 @@ module_deps(#callgraph{digraph = DG}) -> digraph_delete(MDG), dict:from_list(Deps). --spec strip_module_deps(dict(), set()) -> dict(). +-spec strip_module_deps(mod_deps(), sets:set(module())) -> mod_deps(). strip_module_deps(ModDeps, StripSet) -> FilterFun1 = fun(Val) -> not sets:is_element(Val, StripSet) end, @@ -348,16 +364,18 @@ ets_lookup_set(Key, Table) -> scan_core_tree(Tree, #callgraph{calls = ETSCalls, esc = ETSEsc, + letrec_map = ETSLetrecMap, name_map = ETSNameMap, rec_var_map = ETSRecVarMap, rev_name_map = ETSRevNameMap, self_rec = ETSSelfRec}) -> %% Build name map and recursion variable maps. - build_maps(Tree, ETSRecVarMap, ETSNameMap, ETSRevNameMap), + build_maps(Tree, ETSRecVarMap, ETSNameMap, ETSRevNameMap, ETSLetrecMap), %% First find the module-local dependencies. - {Deps0, EscapingFuns, Calls} = dialyzer_dep:analyze(Tree), + {Deps0, EscapingFuns, Calls, Letrecs} = dialyzer_dep:analyze(Tree), true = ets:insert(ETSCalls, dict:to_list(Calls)), + true = ets:insert(ETSLetrecMap, dict:to_list(Letrecs)), true = ets:insert(ETSEsc, [{E} || E <- EscapingFuns]), LabelEdges = get_edges_from_deps(Deps0), @@ -394,7 +412,7 @@ scan_core_tree(Tree, #callgraph{calls = ETSCalls, NamedEdges3 = NewNamedEdges1 ++ NewNamedEdges2, {Names3, NamedEdges3}. -build_maps(Tree, ETSRecVarMap, ETSNameMap, ETSRevNameMap) -> +build_maps(Tree, ETSRecVarMap, ETSNameMap, ETSRevNameMap, ETSLetrecMap) -> %% We only care about the named (top level) functions. The anonymous %% functions will be analysed together with their parents. Defs = cerl:module_defs(Tree), @@ -406,6 +424,7 @@ build_maps(Tree, ETSRecVarMap, ETSNameMap, ETSRevNameMap) -> MFA = {Mod, FunName, Arity}, FunLabel = get_label(Function), VarLabel = get_label(Var), + true = ets:insert(ETSLetrecMap, {VarLabel, FunLabel}), true = ets:insert(ETSNameMap, {FunLabel, MFA}), true = ets:insert(ETSRevNameMap, {MFA, FunLabel}), true = ets:insert(ETSRecVarMap, {VarLabel, MFA}) @@ -561,7 +580,7 @@ digraph_reaching_subgraph(Funs, DG) -> %% Races %%---------------------------------------------------------------------- --spec renew_race_info(callgraph(), dict(), [label()], [string()]) -> +-spec renew_race_info(callgraph(), dict:dict(), [label()], [string()]) -> callgraph(). renew_race_info(#callgraph{race_data_server = RaceDataServer} = CG, @@ -627,7 +646,7 @@ duplicate(#callgraph{race_data_server = RaceDataServer} = Callgraph) -> dispose_race_server(#callgraph{race_data_server = RaceDataServer}) -> race_data_server_cast(stop, RaceDataServer). --spec get_digraph(callgraph()) -> digraph(). +-spec get_digraph(callgraph()) -> digraph:graph(). get_digraph(#callgraph{digraph = Digraph}) -> Digraph. @@ -642,7 +661,7 @@ get_named_tables(#callgraph{race_data_server = RaceDataServer}) -> get_public_tables(#callgraph{race_data_server = RaceDataServer}) -> race_data_server_call(get_public_tables, RaceDataServer). --spec get_race_code(callgraph()) -> dict(). +-spec get_race_code(callgraph()) -> dict:dict(). get_race_code(#callgraph{race_data_server = RaceDataServer}) -> race_data_server_call(get_race_code, RaceDataServer). @@ -663,12 +682,12 @@ race_code_new(#callgraph{race_data_server = RaceDataServer} = CG) -> ok = race_data_server_cast(race_code_new, RaceDataServer), CG. --spec put_digraph(digraph(), callgraph()) -> callgraph(). +-spec put_digraph(digraph:graph(), callgraph()) -> callgraph(). put_digraph(Digraph, Callgraph) -> Callgraph#callgraph{digraph = Digraph}. --spec put_race_code(dict(), callgraph()) -> callgraph(). +-spec put_race_code(dict:dict(), callgraph()) -> callgraph(). put_race_code(RaceCode, #callgraph{race_data_server = RaceDataServer} = CG) -> ok = race_data_server_cast({put_race_code, RaceCode}, RaceDataServer), |