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-rw-r--r--erts/emulator/test/process_SUITE.erl95
1 files changed, 91 insertions, 4 deletions
diff --git a/erts/emulator/test/process_SUITE.erl b/erts/emulator/test/process_SUITE.erl
index 5641489f5c..fdc55a4cc5 100644
--- a/erts/emulator/test/process_SUITE.erl
+++ b/erts/emulator/test/process_SUITE.erl
@@ -35,7 +35,7 @@
self_exit/1, normal_suicide_exit/1, abnormal_suicide_exit/1,
t_exit_2_catch/1, trap_exit_badarg/1, trap_exit_badarg_in_bif/1,
exit_and_timeout/1, exit_twice/1,
- t_process_info/1, process_info_other_msg/1,
+ t_process_info/1, process_info_other/1, process_info_other_msg/1,
process_info_other_dist_msg/1,
process_info_2_list/1, process_info_lock_reschedule/1,
process_info_lock_reschedule2/1,
@@ -64,7 +64,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[spawn_with_binaries, t_exit_1, {group, t_exit_2},
trap_exit_badarg, trap_exit_badarg_in_bif,
- t_process_info, process_info_other_msg,
+ t_process_info, process_info_other, process_info_other_msg,
process_info_other_dist_msg, process_info_2_list,
process_info_lock_reschedule,
process_info_lock_reschedule2,
@@ -412,7 +412,7 @@ etwice_high(Low) ->
exit(Low, first),
exit(Low, second).
-%% Tests the process_info/1 BIF.
+%% Tests the process_info/2 BIF.
t_process_info(Config) when is_list(Config) ->
?line [] = process_info(self(), registered_name),
?line register(my_name, self()),
@@ -420,13 +420,100 @@ t_process_info(Config) when is_list(Config) ->
?line {status, running} = process_info(self(), status),
?line {min_heap_size, 233} = process_info(self(), min_heap_size),
?line {min_bin_vheap_size, 46368} = process_info(self(), min_bin_vheap_size),
- ?line {current_function, {?MODULE, t_process_info, 1}} =
+ ?line {current_function,{?MODULE,t_process_info,1}} =
process_info(self(), current_function),
+ ?line {current_function,{?MODULE,t_process_info,1}} =
+ apply(erlang, process_info, [self(),current_function]),
+
+ %% current_location and current_stacktrace
+ {Line1,Res1} = {?LINE,process_info(self(), current_location)},
+ verify_loc(Line1, Res1),
+ {Line2,Res2} = {?LINE,apply(erlang, process_info,
+ [self(),current_location])},
+ verify_loc(Line2, Res2),
+ pi_stacktrace([{?MODULE,t_process_info,1,?LINE}]),
+
?line Gleader = group_leader(),
?line {group_leader, Gleader} = process_info(self(), group_leader),
?line {'EXIT',{badarg,_Info}} = (catch process_info('not_a_pid')),
ok.
+pi_stacktrace(Expected0) ->
+ {Line,Res} = {?LINE,erlang:process_info(self(), current_stacktrace)},
+ {current_stacktrace,Stack} = Res,
+ Expected = [{?MODULE,pi_stacktrace,1,Line}|Expected0],
+ pi_stacktrace_1(Stack, Expected).
+
+pi_stacktrace_1([{M,F,A,Loc}|Stk], [{M,F,A,Line}|Exp]) ->
+ case Loc of
+ [] ->
+ %% No location info for some reason (+L, native code).
+ io:format("Missing location information for ~w:~w/~w",
+ [M,F,A]),
+ ok;
+ [_|_] ->
+ Line = proplists:get_value(line, Loc),
+ File = proplists:get_value(file, Loc),
+ File = ?MODULE_STRING ++ ".erl"
+ end,
+ pi_stacktrace_1(Stk, Exp);
+pi_stacktrace_1([_|_], []) -> ok.
+
+verify_loc(Line, {current_location,{?MODULE,t_process_info=F,1=A,Loc}}) ->
+ case Loc of
+ [] ->
+ %% No location info for some reason (+L, native code).
+ io:format("Missing location information for ~w:~w/~w",
+ [?MODULE,F,A]),
+ ok;
+ [_|_] ->
+ Line = proplists:get_value(line, Loc),
+ File = proplists:get_value(file, Loc),
+ File = ?MODULE_STRING ++ ".erl"
+ end.
+
+process_info_other(Config) when is_list(Config) ->
+ Self = self(),
+ Pid = spawn_link(fun() -> process_info_looper(Self) end),
+ receive after 1 -> ok end,
+ pio_current_location(10000, Pid, 0, 0),
+ pio_current_stacktrace().
+
+pio_current_location(0, _, Pi, Looper) ->
+ io:format("~w call(s) to erlang:process_info/2", [Pi]),
+ io:format("~w call(s) to ~w:process_info_looper/1", [Looper,?MODULE]);
+pio_current_location(N, Pid, Pi, Looper) ->
+ erlang:yield(),
+ {current_location,Where} = process_info(Pid, current_location),
+ case Where of
+ {erlang,process_info,2,[]} ->
+ pio_current_location(N-1, Pid, Pi+1, Looper);
+ {?MODULE,process_info_looper,1,Loc} when is_list(Loc) ->
+ pio_current_location(N-1, Pid, Pi, Looper+1)
+ end.
+
+pio_current_stacktrace() ->
+ L = [begin
+ {current_stacktrace,Stk} = process_info(P, current_stacktrace),
+ {P,Stk}
+ end || P <- processes()],
+ [erlang:garbage_collect(P) || {P,_} <- L],
+ erlang:garbage_collect(),
+ [verify_stacktrace(Stk) || {_,Stk} <- L],
+ ok.
+
+verify_stacktrace([{M,F,A,Loc}|T])
+ when is_atom(M),
+ is_atom(F),
+ is_integer(A),
+ is_list(Loc) ->
+ verify_stacktrace(T);
+verify_stacktrace([]) -> ok.
+
+process_info_looper(Parent) ->
+ process_info(Parent, current_location),
+ process_info_looper(Parent).
+
%% Tests the process_info/1 BIF on another process with messages.
process_info_other_msg(Config) when is_list(Config) ->
Self = self(),