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-rw-r--r--lib/stdlib/test/Makefile1
-rw-r--r--lib/stdlib/test/supervisor_SUITE.erl122
-rw-r--r--lib/stdlib/test/supervisor_deadlock.erl45
3 files changed, 156 insertions, 12 deletions
diff --git a/lib/stdlib/test/Makefile b/lib/stdlib/test/Makefile
index b36265302c..4de6ea3ee7 100644
--- a/lib/stdlib/test/Makefile
+++ b/lib/stdlib/test/Makefile
@@ -67,6 +67,7 @@ MODULES= \
string_SUITE \
supervisor_1 \
supervisor_2 \
+ supervisor_deadlock \
naughty_child \
shell_SUITE \
supervisor_SUITE \
diff --git a/lib/stdlib/test/supervisor_SUITE.erl b/lib/stdlib/test/supervisor_SUITE.erl
index 71b76c093f..767ae3d62c 100644
--- a/lib/stdlib/test/supervisor_SUITE.erl
+++ b/lib/stdlib/test/supervisor_SUITE.erl
@@ -21,7 +21,7 @@
-module(supervisor_SUITE).
-include_lib("common_test/include/ct.hrl").
--define(TIMEOUT, 1000).
+-define(TIMEOUT, ?t:minutes(1)).
%% Testserver specific export
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
@@ -62,7 +62,8 @@
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]).
+ simple_global_supervisor/1, hanging_restart_loop/1,
+ hanging_restart_loop_simple/1]).
%%-------------------------------------------------------------------------
@@ -82,7 +83,7 @@ all() ->
count_children_memory, 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].
+ simple_global_supervisor, hanging_restart_loop, hanging_restart_loop_simple].
groups() ->
[{sup_start, [],
@@ -111,10 +112,8 @@ groups() ->
{restart_rest_for_one, [],
[rest_for_one, rest_for_one_escalation]}].
-init_per_suite(Config0) ->
- Config = lists:keydelete(watchdog, 1, Config0),
- Dog = test_server:timetrap(?TIMEOUT),
- [{watchdog, Dog} | Config].
+init_per_suite(Config) ->
+ Config.
end_per_suite(_Config) ->
ok.
@@ -129,18 +128,21 @@ init_per_testcase(count_children_memory, Config) ->
try erlang:memory() of
_ ->
erts_debug:set_internal_state(available_internal_state, true),
- Config
+ Dog = ?t:timetrap(?TIMEOUT),
+ [{watchdog,Dog}|Config]
catch error:notsup ->
{skip, "+Meamin used during test; erlang:memory/1 not available"}
end;
init_per_testcase(_Case, Config) ->
- erlang:display(_Case),
- Config.
+ Dog = ?t:timetrap(?TIMEOUT),
+ [{watchdog,Dog}|Config].
-end_per_testcase(count_children_memory, _Config) ->
+end_per_testcase(count_children_memory, Config) ->
catch erts_debug:set_internal_state(available_internal_state, false),
+ ?t:timetrap_cancel(?config(watchdog,Config)),
ok;
-end_per_testcase(_Case, _Config) ->
+end_per_testcase(_Case, Config) ->
+ ?t:timetrap_cancel(?config(watchdog,Config)),
ok.
start_link(InitResult) ->
@@ -1455,6 +1457,102 @@ gen_server9212() ->
%%-------------------------------------------------------------------------
+%% Test that child and supervisor can be shutdown while hanging in restart loop.
+%% See OTP-9549.
+hanging_restart_loop(Config) when is_list(Config) ->
+ process_flag(trap_exit, true),
+ {ok, Pid} = start_link({ok, {{one_for_one, 8, 10}, []}}),
+ Child1 = {child1, {supervisor_deadlock, 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),
+ link(CPid1),
+
+ 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, Child1),
+ {error, restarting} = supervisor:restart_child(sup_test, child1),
+ {error, restarting} = supervisor:delete_child(sup_test, child1),
+ [{child1,restarting,worker,[]}] = supervisor:which_children(sup_test),
+ [1,0,0,1] = get_child_counts(sup_test),
+
+ ok = supervisor:terminate_child(sup_test, child1),
+ check_exit_reason(CPid1, error),
+ [{child1,undefined,worker,[]}] = supervisor:which_children(sup_test),
+
+ ets:insert(supervisor_deadlock,{fail_start,false}),
+ {ok, CPid2} = supervisor:restart_child(sup_test, child1),
+ link(CPid2),
+
+ 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(CPid2, error),
+ undefined = whereis(sup_test),
+ ok.
+
+%%-------------------------------------------------------------------------
+%% Test that child and supervisor can be shutdown while hanging in
+%% restart loop, simple_one_for_one.
+%% See OTP-9549.
+hanging_restart_loop_simple(Config) when is_list(Config) ->
+ process_flag(trap_exit, true),
+ Child1 = {child1, {supervisor_deadlock, start_child, []},
+ permanent, brutal_kill, worker, []},
+ {ok, Pid} = start_link({ok, {{simple_one_for_one, 8, 10}, [Child1]}}),
+
+ %% 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, []),
+ link(CPid1),
+
+ ets:insert(supervisor_deadlock,{fail_start,true}),
+ supervisor_deadlock:restart_child(),
+ timer:sleep(2000), % allow restart to happen before proceeding
+
+ {error, simple_one_for_one} = supervisor:restart_child(sup_test, child1),
+ {error, simple_one_for_one} = supervisor:delete_child(sup_test, child1),
+ [{undefined,restarting,worker,[]}] = supervisor:which_children(sup_test),
+ [1,0,0,1] = get_child_counts(sup_test),
+
+ ok = supervisor:terminate_child(sup_test, CPid1),
+ check_exit_reason(CPid1, error),
+ [] = supervisor:which_children(sup_test),
+
+ ets:insert(supervisor_deadlock,{fail_start,false}),
+ {ok, CPid2} = supervisor:start_child(sup_test, []),
+ link(CPid2),
+
+ 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(CPid2, error),
+ undefined = whereis(sup_test),
+ 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
new file mode 100644
index 0000000000..288547a972
--- /dev/null
+++ b/lib/stdlib/test/supervisor_deadlock.erl
@@ -0,0 +1,45 @@
+-module(supervisor_deadlock).
+-compile(export_all).
+
+
+%%%-----------------------------------------------------------------
+%%% gen_server callbacks
+init([child]) ->
+ case ets:lookup(supervisor_deadlock,fail_start) of
+ [{fail_start, false}] ->
+ %% we must not fail on the first init, otherwise supervisor
+ %% terminates immediately
+ {ok, []};
+ [{fail_start, true}] ->
+ %% Restart frequency is MaxR=8, MaxT=10, so this will
+ %% ensure that restart intensity is not reached -> restart
+ %% loop
+ timer:sleep(2000), % NOTE: this could be a gen_server call timeout
+
+ {stop, error}
+ end.
+
+handle_call(_Req, _From, State) ->
+ {reply, ok, State}.
+
+%% Force a restart
+handle_cast(restart, State) ->
+ {stop, error, State}.
+
+handle_info(_Msg, State) ->
+ {noreply, State}.
+
+terminate(_Reason, _State) ->
+ ok.
+
+code_change(_OldVsn, State, _Extra) ->
+ {ok, State}.
+
+
+%%%-----------------------------------------------------------------
+%%% Start child
+start_child() ->
+ gen_server:start_link({local, ?MODULE}, ?MODULE, [child], []).
+
+restart_child() ->
+ gen_server:cast(supervisor_deadlock, restart).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 15:51:07 +0000