%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2006-2009. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in %% compliance with the License. You should have received a copy of the %% Erlang Public License along with this software. If not, it can be %% retrieved online at http://www.erlang.org/. %% %% Software distributed under the License is distributed on an "AS IS" %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See %% the License for the specific language governing rights and limitations %% under the License. %% %% %CopyrightEnd% %% %%%------------------------------------------------------------------- %%% File : z_SUITE.erl %%% Author : Rickard Green <rickard.s.green@ericsson.com> %%% Description : Misc tests that should be run last %%% %%% Created : 15 Jul 2005 by Rickard Green <rickard.s.green@ericsson.com> %%%------------------------------------------------------------------- -module(z_SUITE). -author('rickard.s.green@ericsson.com'). %-define(line_trace, 1). -include("test_server.hrl"). %-compile(export_all). -export([all/1, init_per_testcase/2, fin_per_testcase/2]). -export([schedulers_alive/1, node_container_refc_check/1, long_timers/1, pollset_size/1, check_io_debug/1]). -define(DEFAULT_TIMEOUT, ?t:minutes(5)). all(doc) -> []; all(suite) -> [schedulers_alive, node_container_refc_check, long_timers, pollset_size, check_io_debug]. init_per_testcase(_Case, Config) when is_list(Config) -> Dog = ?t:timetrap(?DEFAULT_TIMEOUT), [{watchdog, Dog}|Config]. fin_per_testcase(_Case, Config) when is_list(Config) -> Dog = ?config(watchdog, Config), ?t:timetrap_cancel(Dog), ok. %%% %%% The test cases ------------------------------------------------------------- %%% schedulers_alive(doc) -> ["Tests that all schedulers are actually used"]; schedulers_alive(suite) -> []; schedulers_alive(Config) when is_list(Config) -> ?line Master = self(), ?line NoSchedulersOnline = erlang:system_flag( schedulers_online, erlang:system_info(schedulers)), ?line NoSchedulers = erlang:system_info(schedulers), UsedScheds = try ?line ?t:format("Number of schedulers configured: ~p~n", [NoSchedulers]), ?line case erlang:system_info(multi_scheduling) of blocked -> ?line ?t:fail(multi_scheduling_blocked); disabled -> ?line ok; enabled -> ?t:format("Testing blocking process exit~n"), BF = fun () -> blocked = erlang:system_flag(multi_scheduling, block), Master ! {self(), blocking}, receive after infinity -> ok end end, ?line Blocker = spawn_link(BF), ?line Mon = erlang:monitor(process, Blocker), ?line receive {Blocker, blocking} -> ok end, ?line [Blocker] = erlang:system_info(multi_scheduling_blockers), ?line unlink(Blocker), ?line exit(Blocker, kill), ?line receive {'DOWN', Mon, _, _, _} -> ok end, ?line enabled = erlang:system_info(multi_scheduling), ?line [] = erlang:system_info(multi_scheduling_blockers), ?line ok end, ?t:format("Testing blocked~n"), ?line erlang:system_flag(multi_scheduling, block), ?line case erlang:system_info(multi_scheduling) of enabled -> ?line ?t:fail(multi_scheduling_enabled); blocked -> ?line [Master] = erlang:system_info(multi_scheduling_blockers); disabled -> ?line ok end, ?line Ps = lists:map( fun (_) -> spawn_link(fun () -> run_on_schedulers(none, [], Master) end) end, lists:seq(1,NoSchedulers)), ?line receive after 1000 -> ok end, ?line {_, 1} = verify_all_schedulers_used({[],0}, 1), ?line lists:foreach(fun (P) -> unlink(P), exit(P, bang) end, Ps), ?line case erlang:system_flag(multi_scheduling, unblock) of blocked -> ?line ?t:fail(multi_scheduling_blocked); disabled -> ?line ok; enabled -> ?line ok end, erts_debug:set_internal_state(available_internal_state, true), %% node_and_dist_references will use emulator interal thread blocking... erts_debug:get_internal_state(node_and_dist_references), erts_debug:set_internal_state(available_internal_state, false), ?t:format("Testing not blocked~n"), ?line Ps2 = lists:map( fun (_) -> spawn_link(fun () -> run_on_schedulers(none, [], Master) end) end, lists:seq(1,NoSchedulers)), ?line receive after 1000 -> ok end, ?line {_, NoSIDs} = verify_all_schedulers_used({[],0},NoSchedulers), ?line lists:foreach(fun (P) -> unlink(P), exit(P, bang) end, Ps2), NoSIDs after NoSchedulers = erlang:system_flag(schedulers_online, NoSchedulersOnline), NoSchedulersOnline = erlang:system_info(schedulers_online) end, ?line {comment, "Number of schedulers " ++ integer_to_list(UsedScheds)}. run_on_schedulers(LastSID, SIDs, ReportTo) -> case erlang:system_info(scheduler_id) of LastSID -> erlang:yield(), run_on_schedulers(LastSID, SIDs, ReportTo); SID -> NewSIDs = case lists:member(SID, SIDs) of true -> SIDs; false -> ReportTo ! {scheduler_used, SID}, [SID | SIDs] end, erlang:yield(), run_on_schedulers(SID, NewSIDs, ReportTo) end. wait_on_used_scheduler({SIDs, SIDsLen} = State) -> receive {scheduler_used, SID} -> case lists:member(SID, SIDs) of true -> wait_on_used_scheduler(State); false -> ?t:format("Scheduler ~p used~n", [SID]), {[SID|SIDs], SIDsLen+1} end end. verify_all_schedulers_used({UsedSIDs, UsedSIDsLen} = State, NoSchedulers) -> ?line case NoSchedulers of UsedSIDsLen -> ?line State; NoSchdlrs when NoSchdlrs < UsedSIDsLen -> ?line ?t:fail({more_schedulers_used_than_exist, {existing_schedulers, NoSchdlrs}, {used_schedulers, UsedSIDsLen}, {used_scheduler_ids, UsedSIDs}}); _ -> ?line NewState = wait_on_used_scheduler(State), ?line verify_all_schedulers_used(NewState, NoSchedulers) end. node_container_refc_check(doc) -> []; node_container_refc_check(suite) -> []; node_container_refc_check(Config) when is_list(Config) -> ?line node_container_SUITE:node_container_refc_check(node()), ?line ok. long_timers(doc) -> []; long_timers(suite) -> []; long_timers(Config) when is_list(Config) -> ?line ok = long_timers_test:check_result(). pollset_size(doc) -> []; pollset_size(suite) -> []; pollset_size(Config) when is_list(Config) -> ?line Name = pollset_size_testcase_initial_state_holder, ?line Mon = erlang:monitor(process, Name), ?line (catch Name ! {get_initial_check_io_result, self()}), ?line InitChkIo = receive {initial_check_io_result, ICIO} -> ?line erlang:demonitor(Mon, [flush]), ?line ICIO; {'DOWN', Mon, _, _, Reason} -> ?line ?t:fail({non_existing, Name, Reason}) end, ?line FinChkIo = get_check_io_info(), ?line io:format("Initial: ~p~nFinal: ~p~n", [InitChkIo, FinChkIo]), ?line InitPollsetSize = lists:keysearch(total_poll_set_size, 1, InitChkIo), ?line FinPollsetSize = lists:keysearch(total_poll_set_size, 1, FinChkIo), ?line case InitPollsetSize =:= FinPollsetSize of true -> case InitPollsetSize of {value, {total_poll_set_size, Size}} -> ?line {comment, "Pollset size: " ++ integer_to_list(Size)}; _ -> ?line {skipped, "Pollset size information not available"} end; false -> %% Somtimes we have fewer descriptors in the %% pollset at the end than when we started, but %% that is ok as long as there are at least 2 %% descriptors (dist listen socket and %% epmd socket) in the pollset. ?line {value, {total_poll_set_size, InitSize}} = InitPollsetSize, ?line {value, {total_poll_set_size, FinSize}} = FinPollsetSize, ?line true = FinSize < InitSize, ?line true = 2 =< FinSize, ?line {comment, "Start pollset size: " ++ integer_to_list(InitSize) ++ " End pollset size: " ++ integer_to_list(FinSize)} end. check_io_debug(doc) -> []; check_io_debug(suite) -> []; check_io_debug(Config) when is_list(Config) -> ?line case lists:keysearch(name, 1, erlang:system_info(check_io)) of {value, {name, erts_poll}} -> ?line check_io_debug_test(); _ -> ?line {skipped, "Not implemented in this emulator"} end. check_io_debug_test() -> ?line erts_debug:set_internal_state(available_internal_state, true), ?line erlang:display(erlang:system_info(check_io)), ?line NoOfErrorFds = erts_debug:get_internal_state(check_io_debug), ?line erts_debug:set_internal_state(available_internal_state, false), ?line 0 = NoOfErrorFds, ?line ok. %% %% Internal functions... %% display_check_io(ChkIo) -> catch erlang:display('--- CHECK IO INFO ---'), catch erlang:display(ChkIo), catch erts_debug:set_internal_state(available_internal_state, true), NoOfErrorFds = (catch erts_debug:get_internal_state(check_io_debug)), catch erlang:display({'NoOfErrorFds', NoOfErrorFds}), catch erts_debug:set_internal_state(available_internal_state, false), catch erlang:display('--- CHECK IO INFO ---'), ok. get_check_io_info() -> ChkIo = erlang:system_info(check_io), case lists:keysearch(pending_updates, 1, ChkIo) of {value, {pending_updates, 0}} -> display_check_io(ChkIo), ChkIo; false -> ChkIo; _ -> receive after 10 -> ok end, get_check_io_info() end.