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-rw-r--r--lib/dialyzer/src/dialyzer_callgraph.erl116
1 files changed, 74 insertions, 42 deletions
diff --git a/lib/dialyzer/src/dialyzer_callgraph.erl b/lib/dialyzer/src/dialyzer_callgraph.erl
index 5e02e7a2cc..bb02bc8c0d 100644
--- a/lib/dialyzer/src/dialyzer_callgraph.erl
+++ b/lib/dialyzer/src/dialyzer_callgraph.erl
@@ -1,8 +1,4 @@
%% -*- erlang-indent-level: 2 -*-
-%%-----------------------------------------------------------------------
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2006-2015. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -15,9 +11,6 @@
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
%%%-------------------------------------------------------------------
%%% File : dialyzer_callgraph.erl
@@ -47,7 +40,7 @@
module_postorder_from_funs/2,
new/0,
get_depends_on/2,
- get_required_by/2,
+ %% get_required_by/2,
in_neighbours/2,
renew_race_info/4,
renew_race_code/2,
@@ -257,12 +250,12 @@ get_depends_on(SCC, #callgraph{active_digraph = {'e', Out, _In, Maps}}) ->
get_depends_on(SCC, #callgraph{active_digraph = {'d', DG}}) ->
digraph:out_neighbours(DG, SCC).
--spec get_required_by(scc() | module(), callgraph()) -> [scc()].
+%% -spec get_required_by(scc() | module(), callgraph()) -> [scc()].
-get_required_by(SCC, #callgraph{active_digraph = {'e', _Out, In, Maps}}) ->
- lookup_scc(SCC, In, Maps);
-get_required_by(SCC, #callgraph{active_digraph = {'d', DG}}) ->
- digraph:in_neighbours(DG, SCC).
+%% get_required_by(SCC, #callgraph{active_digraph = {'e', _Out, In, Maps}}) ->
+%% lookup_scc(SCC, In, Maps);
+%% get_required_by(SCC, #callgraph{active_digraph = {'d', DG}}) ->
+%% digraph:in_neighbours(DG, SCC).
lookup_scc(SCC, Table, Maps) ->
case ets_lookup_dict({'scc', SCC}, Maps) of
@@ -292,9 +285,11 @@ module_postorder(#callgraph{digraph = DG}) ->
Nodes = sets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]),
MDG = digraph:new([acyclic]),
digraph_confirm_vertices(sets:to_list(Nodes), MDG),
- Foreach = fun({M1,M2}) -> digraph:add_edge(MDG, M1, M2) end,
+ Foreach = fun({M1,M2}) -> _ = digraph:add_edge(MDG, M1, M2) end,
lists:foreach(Foreach, sets:to_list(Edges)),
- {digraph_utils:topsort(MDG), {'d', MDG}}.
+ %% The out-neighbors of a vertex are the vertices called directly.
+ %% The used vertices are to occur *before* the calling vertex:
+ {lists:reverse(digraph_utils:topsort(MDG)), {'d', MDG}}.
edge_fold({{M1,_,_},{M2,_,_}}, Set) ->
case M1 =/= M2 of
@@ -312,7 +307,7 @@ module_deps(#callgraph{digraph = DG}) ->
Nodes = sets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]),
MDG = digraph:new(),
digraph_confirm_vertices(sets:to_list(Nodes), MDG),
- Foreach = fun({M1,M2}) -> digraph:add_edge(MDG, M1, M2) end,
+ Foreach = fun({M1,M2}) -> check_add_edge(MDG, M1, M2) end,
lists:foreach(Foreach, sets:to_list(Edges)),
Deps = [{N, ordsets:from_list(digraph:in_neighbours(MDG, N))}
|| N <- sets:to_list(Nodes)],
@@ -559,9 +554,21 @@ digraph_add_edge(From, To, DG) ->
false -> digraph:add_vertex(DG, To);
{To, _} -> ok
end,
- digraph:add_edge(DG, {From, To}, From, To, []),
+ check_add_edge(DG, {From, To}, From, To, []),
ok.
+check_add_edge(G, V1, V2) ->
+ case digraph:add_edge(G, V1, V2) of
+ {error, Error} -> exit({add_edge, V1, V2, Error});
+ _Edge -> ok
+ end.
+
+check_add_edge(G, E, V1, V2, L) ->
+ case digraph:add_edge(G, E, V1, V2, L) of
+ {error, Error} -> exit({add_edge, E, V1, V2, L, Error});
+ _Edge -> ok
+ end.
+
digraph_confirm_vertices([MFA|Left], DG) ->
digraph:add_vertex(DG, MFA, confirmed),
digraph_confirm_vertices(Left, DG);
@@ -769,28 +776,53 @@ to_ps(#callgraph{} = CG, File, Args) ->
ok.
condensation(G) ->
- SCCs = digraph_utils:strong_components(G),
- %% Assign unique numbers to SCCs:
- Ints = lists:seq(1, length(SCCs)),
- IntToSCC = lists:zip(Ints, SCCs),
- IntScc = sofs:relation(IntToSCC, [{int, scc}]),
- %% Subsitute strong components for vertices in edges using the
- %% unique numbers:
- C2V = sofs:relation([{SC, V} || SC <- SCCs, V <- SC], [{scc, v}]),
- I2V = sofs:relative_product(IntScc, C2V), % [{v, int}]
- Es = sofs:relation(digraph:edges(G), [{v, v}]),
- R1 = sofs:relative_product(I2V, Es),
- R2 = sofs:relative_product(I2V, sofs:converse(R1)),
- %% Create in- and out-neighbours:
- In = sofs:relation_to_family(sofs:strict_relation(R2)),
- R3 = sofs:converse(R2),
- Out = sofs:relation_to_family(sofs:strict_relation(R3)),
- [OutETS, InETS, MapsETS] =
- [ets:new(Name,[{read_concurrency, true}]) ||
- Name <- [callgraph_deps_out, callgraph_deps_in, callgraph_scc_map]],
- ets:insert(OutETS, sofs:to_external(Out)),
- ets:insert(InETS, sofs:to_external(In)),
- %% Create mappings from SCCs to unique integers, and the inverse:
- ets:insert(MapsETS, lists:zip([{'scc', SCC} || SCC<- SCCs], Ints)),
- ets:insert(MapsETS, IntToSCC),
- {{'e', OutETS, InETS, MapsETS}, SCCs}.
+ erlang:garbage_collect(), % reduce heap size
+ {Pid, Ref} = erlang:spawn_monitor(do_condensation(G, self())),
+ receive {'DOWN', Ref, process, Pid, Result} ->
+ {SCCInts, OutETS, InETS, MapsETS} = Result,
+ NewSCCs = [ets:lookup_element(MapsETS, SCCInt, 2) || SCCInt <- SCCInts],
+ {{'e', OutETS, InETS, MapsETS}, NewSCCs}
+ end.
+
+-spec do_condensation(digraph:graph(), pid()) -> fun(() -> no_return()).
+
+do_condensation(G, Parent) ->
+ fun() ->
+ [OutETS, InETS, MapsETS] =
+ [ets:new(Name,[{read_concurrency, true}]) ||
+ Name <- [callgraph_deps_out, callgraph_deps_in, callgraph_scc_map]],
+ SCCs = digraph_utils:strong_components(G),
+ %% Assign unique numbers to SCCs:
+ Ints = lists:seq(1, length(SCCs)),
+ IntToSCC = lists:zip(Ints, SCCs),
+ IntScc = sofs:relation(IntToSCC, [{int, scc}]),
+ %% Create mapping from unique integers to SCCs:
+ ets:insert(MapsETS, IntToSCC),
+ %% Subsitute strong components for vertices in edges using the
+ %% unique numbers:
+ C2V = sofs:relation([{SC, V} || SC <- SCCs, V <- SC], [{scc, v}]),
+ I2V = sofs:relative_product(IntScc, C2V), % [{v, int}]
+ Es = sofs:relation(digraph:edges(G), [{v, v}]),
+ R1 = sofs:relative_product(I2V, Es),
+ R2 = sofs:relative_product(I2V, sofs:converse(R1)),
+ R2Strict = sofs:strict_relation(R2),
+ %% Create out-neighbours:
+ Out = sofs:relation_to_family(sofs:converse(R2Strict)),
+ ets:insert(OutETS, sofs:to_external(Out)),
+ %% Sort the SCCs topologically:
+ DG = sofs:family_to_digraph(Out),
+ lists:foreach(fun(I) -> digraph:add_vertex(DG, I) end, Ints),
+ SCCInts0 = digraph_utils:topsort(DG),
+ digraph:delete(DG),
+ %% The out-neighbors of a vertex are the vertices called directly.
+ %% The used vertices are to occur *before* the calling vertex:
+ SCCInts = lists:reverse(SCCInts0),
+ %% Create in-neighbours:
+ In = sofs:relation_to_family(R2Strict),
+ ets:insert(InETS, sofs:to_external(In)),
+ %% Create mapping from SCCs to unique integers:
+ ets:insert(MapsETS, lists:zip([{'scc', SCC} || SCC<- SCCs], Ints)),
+ lists:foreach(fun(E) -> true = ets:give_away(E, Parent, any)
+ end, [OutETS, InETS, MapsETS]),
+ exit({SCCInts, OutETS, InETS, MapsETS})
+ end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 13:54:42 +0000