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-rw-r--r--lib/stdlib/test/supervisor_1.erl2
-rw-r--r--lib/stdlib/test/supervisor_SUITE.erl299
-rw-r--r--lib/stdlib/test/supervisor_deadlock.erl2
3 files changed, 283 insertions, 20 deletions
diff --git a/lib/stdlib/test/supervisor_1.erl b/lib/stdlib/test/supervisor_1.erl
index 419026749b..c3ccacc587 100644
--- a/lib/stdlib/test/supervisor_1.erl
+++ b/lib/stdlib/test/supervisor_1.erl
@@ -42,6 +42,8 @@ start_child(error) ->
set -> gen_server:start_link(?MODULE, error, [])
end;
+start_child({return, Term}) ->
+ Term;
start_child(Extra) ->
{ok, Pid} = gen_server:start_link(?MODULE, normal, []),
diff --git a/lib/stdlib/test/supervisor_SUITE.erl b/lib/stdlib/test/supervisor_SUITE.erl
index cd2c6b0cbb..ee26ba9309 100644
--- a/lib/stdlib/test/supervisor_SUITE.erl
+++ b/lib/stdlib/test/supervisor_SUITE.erl
@@ -39,6 +39,9 @@
sup_start_ignore_temporary_child_start_child_simple/1,
sup_start_ignore_permanent_child_start_child_simple/1,
sup_start_error_return/1, sup_start_fail/1,
+ sup_start_child_returns_error/1,
+ sup_start_restart_child_returns_error/1,
+ sup_start_child_returns_error_simple/1,
sup_start_map/1, sup_start_map_simple/1,
sup_start_map_faulty_specs/1,
sup_stop_infinity/1, sup_stop_timeout/1, sup_stop_brutal_kill/1,
@@ -65,14 +68,16 @@
simple_one_for_one_extra/1, simple_one_for_one_shutdown/1]).
%% Misc tests
--export([child_unlink/1, tree/1, count_children/1,
+-export([child_unlink/1, tree/1, count_children/1, count_children_supervisor/1,
count_restarting_children/1, get_callback_module/1,
do_not_save_start_parameters_for_temporary_children/1,
do_not_save_child_specs_for_temporary_children/1,
simple_one_for_one_scale_many_temporary_children/1,
simple_global_supervisor/1, hanging_restart_loop/1,
+ hanging_restart_loop_rest_for_one/1,
hanging_restart_loop_simple/1, code_change/1, code_change_map/1,
- code_change_simple/1, code_change_simple_map/1]).
+ code_change_simple/1, code_change_simple_map/1,
+ order_of_children/1]).
%%-------------------------------------------------------------------------
@@ -91,12 +96,15 @@ all() ->
{group, normal_termination},
{group, shutdown_termination},
{group, abnormal_termination}, child_unlink, tree,
- count_children, count_restarting_children, get_callback_module,
+ count_children, count_children_supervisor, count_restarting_children,
+ get_callback_module,
do_not_save_start_parameters_for_temporary_children,
do_not_save_child_specs_for_temporary_children,
simple_one_for_one_scale_many_temporary_children, temporary_bystander,
- simple_global_supervisor, hanging_restart_loop, hanging_restart_loop_simple,
- code_change, code_change_map, code_change_simple, code_change_simple_map].
+ simple_global_supervisor, hanging_restart_loop,
+ hanging_restart_loop_rest_for_one, hanging_restart_loop_simple,
+ code_change, code_change_map, code_change_simple, code_change_simple_map,
+ order_of_children].
groups() ->
[{sup_start, [],
@@ -105,7 +113,10 @@ groups() ->
sup_start_ignore_temporary_child_start_child,
sup_start_ignore_temporary_child_start_child_simple,
sup_start_ignore_permanent_child_start_child_simple,
- sup_start_error_return, sup_start_fail]},
+ sup_start_error_return, sup_start_fail,
+ sup_start_child_returns_error, sup_start_restart_child_returns_error,
+ sup_start_child_returns_error_simple
+ ]},
{sup_start_map, [],
[sup_start_map, sup_start_map_simple, sup_start_map_faulty_specs]},
{sup_stop, [],
@@ -147,6 +158,15 @@ init_per_testcase(_Case, Config) ->
Config.
end_per_testcase(_Case, _Config) ->
+ %% Clean up to avoid unnecessary error reports in the shell
+ case whereis(sup_test) of
+ SupPid when is_pid(SupPid) ->
+ unlink(SupPid),
+ exit(SupPid,shutdown),
+ ok;
+ _ ->
+ error
+ end,
ok.
start_link(InitResult) ->
@@ -274,6 +294,7 @@ sup_start_ignore_permanent_child_start_child_simple(Config)
%% Regression test: check that the supervisor terminates without error.
exit(Pid, shutdown),
check_exit_reason(Pid, shutdown).
+
%%-------------------------------------------------------------------------
%% Tests what happens if init-callback returns a invalid value.
sup_start_error_return(Config) when is_list(Config) ->
@@ -289,6 +310,53 @@ sup_start_fail(Config) when is_list(Config) ->
check_exit_reason(Term).
%%-------------------------------------------------------------------------
+%% Test what happens when the start function for a child returns
+%% {error,Reason} or some other term().
+sup_start_restart_child_returns_error(_Config) ->
+ process_flag(trap_exit, true),
+ Child = {child1, {supervisor_1, start_child, [error]},
+ permanent, 1000, worker, []},
+ {ok, _Pid} = start_link({ok, {{one_for_one, 2, 3600}, [Child]}}),
+
+ ok = supervisor:terminate_child(sup_test, child1),
+ {error,{function_clause,_}} = supervisor:restart_child(sup_test,child1),
+
+ [{child1,undefined,worker,[]}] = supervisor:which_children(sup_test),
+ ok.
+
+%%-------------------------------------------------------------------------
+%% Test what happens when the start function for a child returns
+%% {error,Reason} or some other term().
+sup_start_child_returns_error(_Config) ->
+ process_flag(trap_exit, true),
+ Child1 = {child1, {supervisor_1, start_child, [{return,{error,reason}}]},
+ permanent, 1000, worker, []},
+ Child2 = {child2, {supervisor_1, start_child, [{return,error_reason}]},
+ permanent, 1000, worker, []},
+ {ok, _Pid} = start_link({ok, {{one_for_one, 2, 3600}, []}}),
+
+ {error,{reason,_}} = supervisor:start_child(sup_test,Child1),
+ {error,{error_reason,_}} = supervisor:start_child(sup_test,Child2),
+
+ [] = supervisor:which_children(sup_test),
+ ok.
+
+%%-------------------------------------------------------------------------
+%% Test what happens when the start function for a child returns
+%% {error,Reason} - simple_one_for_one
+sup_start_child_returns_error_simple(_Config) ->
+ process_flag(trap_exit, true),
+ Child = {child1, {supervisor_1, start_child, []},
+ permanent, 1000, worker, []},
+ {ok, _Pid} = start_link({ok, {{simple_one_for_one, 2, 3600}, [Child]}}),
+
+ {error,reason} = supervisor:start_child(sup_test,[{return,{error,reason}}]),
+ {error,error_reason} = supervisor:start_child(sup_test,[{return,error_reason}]),
+
+ [] = supervisor:which_children(sup_test),
+ ok.
+
+%%-------------------------------------------------------------------------
%% Tests that the supervisor process starts correctly with map
%% startspec, and that the full childspec can be read.
sup_start_map(Config) when is_list(Config) ->
@@ -468,7 +536,16 @@ extra_return(Config) when is_list(Config) ->
[{child1, CPid3, worker, []}] = supervisor:which_children(sup_test),
[1,1,0,1] = get_child_counts(sup_test),
- ok.
+ %% Check that it can be automatically restarted
+ terminate(CPid3, abnormal),
+ [{child1, CPid4, worker, []}] = supervisor:which_children(sup_test),
+ [1,1,0,1] = get_child_counts(sup_test),
+ if (not is_pid(CPid4)) orelse CPid4=:=CPid3 ->
+ ct:fail({not_restarted,CPid3,CPid4});
+ true ->
+ ok
+ end.
+
%%-------------------------------------------------------------------------
%% Test API functions start_child/2, terminate_child/2, delete_child/2
%% restart_child/2, which_children/1, count_children/1. Only correct
@@ -1378,6 +1455,11 @@ tree(Config) when is_list(Config) ->
[?MODULE, {ok, {{one_for_one, 4, 3600}, []}}]},
permanent, infinity,
supervisor, []},
+ ChildSup3 = {supchild3,
+ {supervisor, start_link,
+ [?MODULE, {ok, {{one_for_one, 4, 3600}, []}}]},
+ transient, infinity,
+ supervisor, []},
%% Top supervisor
{ok, SupPid} = start_link({ok, {{one_for_all, 4, 3600}, []}}),
@@ -1385,7 +1467,9 @@ tree(Config) when is_list(Config) ->
%% Child supervisors
{ok, Sup1} = supervisor:start_child(SupPid, ChildSup1),
{ok, Sup2} = supervisor:start_child(SupPid, ChildSup2),
- [2,2,2,0] = get_child_counts(SupPid),
+ {ok, _Sup3} = supervisor:start_child(SupPid, ChildSup3),
+ ok = supervisor:terminate_child(SupPid, supchild3),
+ [3,2,3,0] = get_child_counts(SupPid),
%% Workers
[{_, CPid2, _, _},{_, CPid1, _, _}] =
@@ -1417,16 +1501,21 @@ tree(Config) when is_list(Config) ->
timer:sleep(1000),
- [{supchild2, NewSup2, _, _},{supchild1, NewSup1, _, _}] =
+ [{supchild3, NewSup3, _, _},
+ {supchild2, NewSup2, _, _},
+ {supchild1, NewSup1, _, _}] =
supervisor:which_children(SupPid),
- [2,2,2,0] = get_child_counts(SupPid),
+ [3,3,3,0] = get_child_counts(SupPid),
[{child2, _, _, _},{child1, _, _, _}] =
supervisor:which_children(NewSup1),
[2,2,0,2] = get_child_counts(NewSup1),
[] = supervisor:which_children(NewSup2),
- [0,0,0,0] = get_child_counts(NewSup2).
+ [0,0,0,0] = get_child_counts(NewSup2),
+
+ [] = supervisor:which_children(NewSup3),
+ [0,0,0,0] = get_child_counts(NewSup3).
%%-------------------------------------------------------------------------
%% Test count_children
@@ -1459,6 +1548,36 @@ count_children(Config) when is_list(Config) ->
[1,0,0,0] = get_child_counts(sup_test).
%%-------------------------------------------------------------------------
+%% Test count_children for simple_one_for_one, when children are supervisors
+count_children_supervisor(Config) when is_list(Config) ->
+ process_flag(trap_exit, true),
+ Child = {child, {supervisor_1, start_child, []}, temporary, infinity,
+ supervisor, []},
+ {ok, SupPid} = start_link({ok, {{simple_one_for_one, 2, 3600}, [Child]}}),
+ [supervisor:start_child(sup_test, []) || _Ignore <- lists:seq(1,1000)],
+
+ Children = supervisor:which_children(sup_test),
+ ChildCount = get_child_counts(sup_test),
+
+ [supervisor:start_child(sup_test, []) || _Ignore2 <- lists:seq(1,1000)],
+
+ ChildCount2 = get_child_counts(sup_test),
+ Children2 = supervisor:which_children(sup_test),
+
+ ChildCount3 = get_child_counts(sup_test),
+ Children3 = supervisor:which_children(sup_test),
+
+ 1000 = length(Children),
+ [1,1000,1000,0] = ChildCount,
+ 2000 = length(Children2),
+ [1,2000,2000,0] = ChildCount2,
+ Children3 = Children2,
+ ChildCount3 = ChildCount2,
+
+ [terminate(SupPid, Pid, child, kill) || {undefined, Pid, supervisor, _Modules} <- Children3],
+ [1,0,0,0] = get_child_counts(sup_test).
+
+%%-------------------------------------------------------------------------
%% Test count_children when some children are restarting
count_restarting_children(Config) when is_list(Config) ->
process_flag(trap_exit, true),
@@ -1577,11 +1696,11 @@ dont_save_start_parameters_for_temporary_children(simple_one_for_one = Type) ->
start_children(Sup2, [LargeList], 100),
start_children(Sup3, [LargeList], 100),
- [{memory,Mem1}] = process_info(Sup1, [memory]),
- [{memory,Mem2}] = process_info(Sup2, [memory]),
- [{memory,Mem3}] = process_info(Sup3, [memory]),
+ Size1 = erts_debug:flat_size(sys:get_status(Sup1)),
+ Size2 = erts_debug:flat_size(sys:get_status(Sup2)),
+ Size3 = erts_debug:flat_size(sys:get_status(Sup3)),
- true = (Mem3 < Mem1) and (Mem3 < Mem2),
+ true = (Size3 < Size1) and (Size3 < Size2),
terminate(Sup1, shutdown),
terminate(Sup2, shutdown),
@@ -1605,11 +1724,11 @@ dont_save_start_parameters_for_temporary_children(Type) ->
start_children(Sup2, Transient, 100),
start_children(Sup3, Temporary, 100),
- [{memory,Mem1}] = process_info(Sup1, [memory]),
- [{memory,Mem2}] = process_info(Sup2, [memory]),
- [{memory,Mem3}] = process_info(Sup3, [memory]),
+ Size1 = erts_debug:flat_size(sys:get_status(Sup1)),
+ Size2 = erts_debug:flat_size(sys:get_status(Sup2)),
+ Size3 = erts_debug:flat_size(sys:get_status(Sup3)),
- true = (Mem3 < Mem1) and (Mem3 < Mem2),
+ true = (Size3 < Size1) and (Size3 < Size2),
terminate(Sup1, shutdown),
terminate(Sup2, shutdown),
@@ -1847,6 +1966,61 @@ hanging_restart_loop(Config) when is_list(Config) ->
undefined = whereis(sup_test),
ok.
+hanging_restart_loop_rest_for_one(Config) when is_list(Config) ->
+ process_flag(trap_exit, true),
+ {ok, Pid} = start_link({ok, {{rest_for_one, 8, 10}, []}}),
+ Child1 = {child1, {supervisor_1, start_child, []},
+ permanent, brutal_kill, worker, []},
+ Child2 = {child2, {supervisor_deadlock, start_child, []},
+ permanent, brutal_kill, worker, []},
+ Child3 = {child3, {supervisor_1, start_child, []},
+ permanent, brutal_kill, worker, []},
+
+ %% Ets table with state read by supervisor_deadlock.erl
+ ets:new(supervisor_deadlock,[set,named_table,public]),
+ ets:insert(supervisor_deadlock,{fail_start,false}),
+
+ {ok, CPid1} = supervisor:start_child(sup_test, Child1),
+ {ok, CPid2} = supervisor:start_child(sup_test, Child2),
+ link(CPid2),
+ {ok, _CPid3} = supervisor:start_child(sup_test, Child3),
+
+ ets:insert(supervisor_deadlock,{fail_start,true}),
+ supervisor_deadlock:restart_child(),
+ timer:sleep(2000), % allow restart to happen before proceeding
+
+ {error, already_present} = supervisor:start_child(sup_test, Child2),
+ {error, restarting} = supervisor:restart_child(sup_test, child2),
+ {error, restarting} = supervisor:delete_child(sup_test, child2),
+ [{child3,undefined,worker,[]},
+ {child2,restarting,worker,[]},
+ {child1,CPid1,worker,[]}] = supervisor:which_children(sup_test),
+ [3,1,0,3] = get_child_counts(sup_test),
+
+ ok = supervisor:terminate_child(sup_test, child2),
+ check_exit_reason(CPid2, error),
+ [{child3,undefined,worker,[]},
+ {child2,undefined,worker,[]},
+ {child1,CPid1,worker,[]}] = supervisor:which_children(sup_test),
+
+ ets:insert(supervisor_deadlock,{fail_start,false}),
+ {ok, CPid22} = supervisor:restart_child(sup_test, child2),
+ link(CPid22),
+
+ ets:insert(supervisor_deadlock,{fail_start,true}),
+ supervisor_deadlock:restart_child(),
+ timer:sleep(2000), % allow restart to happen before proceeding
+
+ %% Terminating supervisor.
+ %% OTP-9549 fixes so this does not give a timetrap timeout -
+ %% i.e. that supervisor does not hang in restart loop.
+ terminate(Pid,shutdown),
+
+ %% Check that child died with reason from 'restart' request above
+ check_exit_reason(CPid22, error),
+ undefined = whereis(sup_test),
+ ok.
+
%%-------------------------------------------------------------------------
%% Test that child and supervisor can be shutdown while hanging in
%% restart loop, simple_one_for_one.
@@ -2075,6 +2249,93 @@ fake_upgrade(Pid,NewInitReturn) ->
ok = sys:resume(Pid),
R.
+%% Test that children are started in the order they are given, and
+%% terminated in the opposite order
+order_of_children(_Config) ->
+ process_flag(trap_exit, true),
+ %% Use child ids that are not alphabetically storted
+ Id1 = ch7,
+ Id2 = ch3,
+ Id3 = ch10,
+ Id4 = ch2,
+ Id5 = ch5,
+ Children =
+ [{Id, {supervisor_1, start_child, []}, permanent, 1000, worker, []} ||
+ Id <- [Id1,Id2,Id3,Id4,Id5]],
+
+ {ok, SupPid} = start_link({ok, {{rest_for_one, 2, 3600}, Children}}),
+
+
+ %% Check start order (pids are growing)
+ Which1 = supervisor:which_children(sup_test),
+ IsPid = fun({_,P,_,_}) when is_pid(P) -> true; (_) -> false end,
+ true = lists:all(IsPid,Which1),
+ SortedOnPid1 = lists:keysort(2,Which1),
+ [{Id1,Pid1,_,_},
+ {Id2,Pid2,_,_},
+ {Id3,Pid3,_,_},
+ {Id4,Pid4,_,_},
+ {Id5,Pid5,_,_}] = SortedOnPid1,
+
+ TPid = self(),
+ TraceHandler = fun({trace,P,exit,_},{Last,Ps}) when P=:=Last ->
+ TPid ! {exited,lists:reverse([P|Ps])},
+ {Last,Ps};
+ ({trace,P,exit,_},{Last,Ps}) ->
+ {Last,[P|Ps]};
+ (_T,Acc) ->
+ Acc
+ end,
+
+ %% Terminate Pid3 and check that Pid4 and Pid5 are terminated in
+ %% expected order.
+ Expected1 = [Pid5,Pid4],
+ {ok,_} = dbg:tracer(process,{TraceHandler,{Pid4,[]}}),
+ [{ok,[_]} = dbg:p(P,procs) || P <- Expected1],
+ terminate(Pid3, abnormal),
+ receive {exited,ExitedPids1} ->
+ dbg:stop_clear(),
+ case ExitedPids1 of
+ Expected1 -> ok;
+ _ -> ct:fail({faulty_termination_order,
+ {expected,Expected1},
+ {got,ExitedPids1}})
+ end
+ after 3000 ->
+ dbg:stop_clear(),
+ ct:fail({shutdown_fail,timeout})
+ end,
+
+ %% Then check that Id3-5 are started again in correct order
+ Which2 = supervisor:which_children(sup_test),
+ true = lists:all(IsPid,Which2),
+ SortedOnPid2 = lists:keysort(2,Which2),
+ [{Id1,Pid1,_,_},
+ {Id2,Pid2,_,_},
+ {Id3,Pid32,_,_},
+ {Id4,Pid42,_,_},
+ {Id5,Pid52,_,_}] = SortedOnPid2,
+
+ %% Terminate supervisor and check that all children are terminated
+ %% in opposite start order
+ Expected2 = [Pid52,Pid42,Pid32,Pid2,Pid1],
+ {ok,_} = dbg:tracer(process,{TraceHandler,{Pid1,[]}}),
+ [{ok,[_]} = dbg:p(P,procs) || P <- Expected2],
+ exit(SupPid,shutdown),
+ receive {exited,ExitedPids2} ->
+ dbg:stop_clear(),
+ case ExitedPids2 of
+ Expected2 -> ok;
+ _ -> ct:fail({faulty_termination_order,
+ {expected,Expected2},
+ {got,ExitedPids2}})
+ end
+ after 3000 ->
+ dbg:stop_clear(),
+ ct:fail({shutdown_fail,timeout})
+ end,
+ ok.
+
%%-------------------------------------------------------------------------
terminate(Pid, Reason) when Reason =/= supervisor ->
terminate(dummy, Pid, dummy, Reason).
diff --git a/lib/stdlib/test/supervisor_deadlock.erl b/lib/stdlib/test/supervisor_deadlock.erl
index 8d3d1c6f30..f51aecccb2 100644
--- a/lib/stdlib/test/supervisor_deadlock.erl
+++ b/lib/stdlib/test/supervisor_deadlock.erl
@@ -1,5 +1,5 @@
-module(supervisor_deadlock).
--compile(export_all).
+-compile([export_all,nowarn_export_all]).
%%%-----------------------------------------------------------------
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 04:21:06 +0000