diff options
Diffstat (limited to 'erts/emulator/test/scheduler_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/scheduler_SUITE.erl | 110 |
1 files changed, 102 insertions, 8 deletions
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl index e644ad4dc8..c9101b77c2 100644 --- a/erts/emulator/test/scheduler_SUITE.erl +++ b/erts/emulator/test/scheduler_SUITE.erl @@ -1,19 +1,19 @@ %% %% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2008-2009. All Rights Reserved. -%% +%% +%% Copyright Ericsson AB 2008-2010. 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% %% @@ -48,7 +48,8 @@ scheduler_bind_types/1, cpu_topology/1, sct_cmd/1, - sbt_cmd/1]). + sbt_cmd/1, + scheduler_suspend/1]). -define(DEFAULT_TIMEOUT, ?t:minutes(10)). @@ -65,7 +66,8 @@ all(suite) -> equal_with_high, equal_with_high_max, bound_process, - scheduler_bind]. + scheduler_bind, + scheduler_suspend]. init_per_testcase(Case, Config) when is_list(Config) -> Dog = ?t:timetrap(?DEFAULT_TIMEOUT), @@ -882,11 +884,103 @@ sbt_test(Config, CpuTCmd, ClBt, Bt, LP) -> ?line stop_node(Node), ?line ok. +scheduler_suspend(Config) when is_list(Config) -> + ?line Dog = ?t:timetrap(?t:minutes(2)), + ?line lists:foreach(fun (S) -> scheduler_suspend_test(Config, S) end, + [64, 32, 16, default]), + ?line ?t:timetrap_cancel(Dog), + ?line ok. +scheduler_suspend_test(Config, Schedulers) -> + ?line Cmd = case Schedulers of + default -> + ""; + _ -> + S = integer_to_list(Schedulers), + "+S"++S++":"++S + end, + ?line {ok, Node} = start_node(Config, Cmd), + ?line [SState] = mcall(Node, [fun () -> + erlang:system_info(schedulers_state) + end]), + ?line {Sched, _, _} = SState, + ?line true = is_integer(Sched), + ?line [ok] = mcall(Node, [fun () -> sst0_loop(300) end]), + ?line [ok] = mcall(Node, [fun () -> sst1_loop(300) end]), + ?line [ok] = mcall(Node, [fun () -> sst2_loop(300) end]), + ?line [ok, ok, ok, ok, ok] = mcall(Node, + [fun () -> sst0_loop(200) end, + fun () -> sst1_loop(200) end, + fun () -> sst2_loop(200) end, + fun () -> sst2_loop(200) end, + fun () -> sst3_loop(Sched, 200) end]), + ?line [SState] = mcall(Node, [fun () -> + erlang:system_info(schedulers_state) + end]), + ?line stop_node(Node), + ?line ok. + + +sst0_loop(0) -> + ok; +sst0_loop(N) -> + erlang:system_flag(multi_scheduling, block), + erlang:system_flag(multi_scheduling, unblock), + erlang:yield(), + sst0_loop(N-1). + +sst1_loop(0) -> + ok; +sst1_loop(N) -> + erlang:system_flag(multi_scheduling, block), + erlang:system_flag(multi_scheduling, unblock), + sst1_loop(N-1). + +sst2_loop(0) -> + ok; +sst2_loop(N) -> + erlang:system_flag(multi_scheduling, block), + erlang:system_flag(multi_scheduling, block), + erlang:system_flag(multi_scheduling, block), + erlang:system_flag(multi_scheduling, unblock), + erlang:system_flag(multi_scheduling, unblock), + erlang:system_flag(multi_scheduling, unblock), + sst2_loop(N-1). + +sst3_loop(_S, 0) -> + ok; +sst3_loop(S, N) -> + erlang:system_flag(schedulers_online, (S div 2)+1), + erlang:system_flag(schedulers_online, 1), + erlang:system_flag(schedulers_online, (S div 2)+1), + erlang:system_flag(schedulers_online, S), + erlang:system_flag(schedulers_online, 1), + erlang:system_flag(schedulers_online, S), + sst3_loop(S, N-1). + -% +%% %% Utils %% +mcall(Node, Funs) -> + Parent = self(), + Refs = lists:map(fun (Fun) -> + Ref = make_ref(), + spawn_link(Node, + fun () -> + Res = Fun(), + unlink(Parent), + Parent ! {Ref, Res} + end), + Ref + end, Funs), + lists:map(fun (Ref) -> + receive + {Ref, Res} -> + Res + end + end, Refs). + erl_rel_flag_var() -> "ERL_"++erlang:system_info(otp_release)++"_FLAGS". |