diff options
Diffstat (limited to 'lib/stdlib/test/supervisor_SUITE.erl')
| -rw-r--r-- | lib/stdlib/test/supervisor_SUITE.erl | 134 |
1 files changed, 105 insertions, 29 deletions
diff --git a/lib/stdlib/test/supervisor_SUITE.erl b/lib/stdlib/test/supervisor_SUITE.erl index f9ceed8f84..b48450c151 100644 --- a/lib/stdlib/test/supervisor_SUITE.erl +++ b/lib/stdlib/test/supervisor_SUITE.erl @@ -20,7 +20,7 @@ -module(supervisor_SUITE). --include_lib("test_server/include/test_server.hrl"). +-include_lib("common_test/include/ct.hrl"). -define(TIMEOUT, 1000). %% Testserver specific export @@ -28,8 +28,8 @@ init_per_group/2,end_per_group/2, init_per_testcase/2, end_per_testcase/2]). -%% Indirect spawn export --export([init/1]). +%% Internal export +-export([init/1, terminate_all_children/1]). %% API tests -export([ sup_start_normal/1, sup_start_ignore_init/1, @@ -42,7 +42,7 @@ -export([ permanent_normal/1, transient_normal/1, temporary_normal/1, permanent_abnormal/1, transient_abnormal/1, - temporary_abnormal/1]). + temporary_abnormal/1, temporary_bystander/1]). %% Restart strategy tests -export([ one_for_one/1, @@ -55,7 +55,8 @@ %% Misc tests -export([child_unlink/1, tree/1, count_children_memory/1, do_not_save_start_parameters_for_temporary_children/1, - do_not_save_child_specs_for_temporary_children/1]). + do_not_save_child_specs_for_temporary_children/1, + simple_one_for_one_scale_many_temporary_children/1]). %%------------------------------------------------------------------------- @@ -72,7 +73,8 @@ all() -> {group, normal_termination}, {group, abnormal_termination}, child_unlink, tree, count_children_memory, do_not_save_start_parameters_for_temporary_children, - do_not_save_child_specs_for_temporary_children]. + do_not_save_child_specs_for_temporary_children, + simple_one_for_one_scale_many_temporary_children, temporary_bystander]. groups() -> [{sup_start, [], @@ -112,10 +114,9 @@ end_per_group(_GroupName, Config) -> Config. init_per_testcase(count_children_memory, Config) -> - MemoryState = erlang:system_info(allocator), - case count_children_allocator_test(MemoryState) of - true -> Config; - false -> + try erlang:memory() of + _ -> Config + catch error:notsup -> {skip, "+Meamin used during test; erlang:memory/1 not available"} end; init_per_testcase(_Case, Config) -> @@ -349,8 +350,7 @@ child_adm(Config) when is_list(Config) -> ok = supervisor:terminate_child(sup_test, child1), %% Start of already existing but not running process - {error,already_present} = - supervisor:start_child(sup_test, Child), + {error,already_present} = supervisor:start_child(sup_test, Child), %% Restart {ok, CPid2} = supervisor:restart_child(sup_test, child1), @@ -377,6 +377,11 @@ child_adm(Config) when is_list(Config) -> [{child1, CPid3, worker, []}] = supervisor:which_children(sup_test), [1,1,0,1] = get_child_counts(sup_test), + %% Terminate with Pid not allowed when not simple_one_for_one + {error,not_found} = supervisor:terminate_child(sup_test, CPid3), + [{child1, CPid3, worker, []}] = supervisor:which_children(sup_test), + [1,1,0,1] = get_child_counts(sup_test), + {'EXIT',{noproc,{gen_server,call,[foo,which_children,infinity]}}} = (catch supervisor:which_children(foo)), {'EXIT',{noproc,{gen_server,call,[foo,count_children,infinity]}}} @@ -412,16 +417,26 @@ child_adm_simple(Config) when is_list(Config) -> [1,2,0,2] = get_child_counts(sup_test), %% Termination - {error, simple_one_for_one} = - supervisor:terminate_child(sup_test, child1), + {error, simple_one_for_one} = supervisor:terminate_child(sup_test, child1), + [1,2,0,2] = get_child_counts(sup_test), + ok = supervisor:terminate_child(sup_test,CPid1), + [_] = supervisor:which_children(sup_test), + [1,1,0,1] = get_child_counts(sup_test), + false = erlang:is_process_alive(CPid1), + %% Terminate non-existing proccess is ok + ok = supervisor:terminate_child(sup_test,CPid1), + [_] = supervisor:which_children(sup_test), + [1,1,0,1] = get_child_counts(sup_test), + %% Terminate pid which is not a child of this supervisor is not ok + NoChildPid = spawn_link(fun() -> receive after infinity -> ok end end), + {error, not_found} = supervisor:terminate_child(sup_test, NoChildPid), + true = erlang:is_process_alive(NoChildPid), %% Restart - {error, simple_one_for_one} = - supervisor:restart_child(sup_test, child1), + {error, simple_one_for_one} = supervisor:restart_child(sup_test, child1), %% Deletion - {error, simple_one_for_one} = - supervisor:delete_child(sup_test, child1), + {error, simple_one_for_one} = supervisor:delete_child(sup_test, child1), ok. %%------------------------------------------------------------------------- @@ -592,6 +607,37 @@ temporary_abnormal(Config) when is_list(Config) -> [0,0,0,0] = get_child_counts(sup_test). %%------------------------------------------------------------------------- +temporary_bystander(doc) -> + ["A temporary process killed as part of a rest_for_one or one_for_all " + "restart strategy should not be restarted given its args are not " + " saved. Otherwise the supervisor hits its limit and crashes."]; +temporary_bystander(suite) -> []; +temporary_bystander(_Config) -> + Child1 = {child1, {supervisor_1, start_child, []}, permanent, 100, + worker, []}, + Child2 = {child2, {supervisor_1, start_child, []}, temporary, 100, + worker, []}, + {ok, SupPid1} = supervisor:start_link(?MODULE, {ok, {{one_for_all, 2, 300}, []}}), + {ok, SupPid2} = supervisor:start_link(?MODULE, {ok, {{rest_for_one, 2, 300}, []}}), + unlink(SupPid1), % otherwise we crash with it + unlink(SupPid2), % otherwise we crash with it + {ok, CPid1} = supervisor:start_child(SupPid1, Child1), + {ok, _CPid2} = supervisor:start_child(SupPid1, Child2), + {ok, CPid3} = supervisor:start_child(SupPid2, Child1), + {ok, _CPid4} = supervisor:start_child(SupPid2, Child2), + terminate(SupPid1, CPid1, child1, normal), + terminate(SupPid2, CPid3, child1, normal), + timer:sleep(350), + catch link(SupPid1), + catch link(SupPid2), + %% The supervisor would die attempting to restart child2 + true = erlang:is_process_alive(SupPid1), + true = erlang:is_process_alive(SupPid2), + %% Child2 has not been restarted + [{child1, _, _, _}] = supervisor:which_children(SupPid1), + [{child1, _, _, _}] = supervisor:which_children(SupPid2). + +%%------------------------------------------------------------------------- one_for_one(doc) -> ["Test the one_for_one base case."]; one_for_one(suite) -> []; @@ -1016,17 +1062,6 @@ count_children_memory(Config) when is_list(Config) -> [terminate(SupPid, Pid, child, kill) || {undefined, Pid, worker, _Modules} <- Children3], [1,0,0,0] = get_child_counts(sup_test). -count_children_allocator_test(MemoryState) -> - Allocators = [temp_alloc, eheap_alloc, binary_alloc, ets_alloc, - driver_alloc, sl_alloc, ll_alloc, fix_alloc, std_alloc, - sys_alloc], - MemoryStateList = element(4, MemoryState), - AllocTypes = [lists:keyfind(Alloc, 1, MemoryStateList) - || Alloc <- Allocators], - AllocStates = [lists:keyfind(e, 1, AllocValue) - || {_Type, AllocValue} <- AllocTypes], - lists:all(fun(State) -> State == {e, true} end, AllocStates). - %%------------------------------------------------------------------------- do_not_save_start_parameters_for_temporary_children(doc) -> ["Temporary children shall not be restarted so they should not " @@ -1187,6 +1222,47 @@ restarted(Sup, {Id,_,_,_,_,_} = ChildSpec, TerminateHow) -> {error, {already_started, _}} = supervisor:start_child(Sup, ChildSpec). +%%------------------------------------------------------------------------- +%% OTP-9242: Pids for dynamic temporary children were saved as a list, +%% which caused bad scaling when adding/deleting many processes. +simple_one_for_one_scale_many_temporary_children(_Config) -> + process_flag(trap_exit, true), + Child = {child, {supervisor_1, start_child, []}, temporary, 1000, + worker, []}, + {ok, _SupPid} = start_link({ok, {{simple_one_for_one, 2, 3600}, [Child]}}), + + C1 = [begin + {ok,P} = supervisor:start_child(sup_test,[]), + P + end || _<- lists:seq(1,1000)], + {T1,done} = timer:tc(?MODULE,terminate_all_children,[C1]), + + C2 = [begin + {ok,P} = supervisor:start_child(sup_test,[]), + P + end || _<- lists:seq(1,10000)], + {T2,done} = timer:tc(?MODULE,terminate_all_children,[C2]), + + Scaling = T2 div T1, + if Scaling > 20 -> + %% The scaling shoul be linear (i.e.10, really), but we + %% give some extra here to avoid failing the test + %% unecessarily. + ?t:fail({bad_scaling,Scaling}); + true -> + ok + end. + + +terminate_all_children([C|Cs]) -> + ok = supervisor:terminate_child(sup_test,C), + terminate_all_children(Cs); +terminate_all_children([]) -> + done. + + + +%%------------------------------------------------------------------------- terminate(Pid, Reason) when Reason =/= supervisor -> terminate(dummy, Pid, dummy, Reason). |