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Diffstat (limited to 'erts/emulator/test/multi_load_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/multi_load_SUITE.erl | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/erts/emulator/test/multi_load_SUITE.erl b/erts/emulator/test/multi_load_SUITE.erl new file mode 100644 index 0000000000..edf3205812 --- /dev/null +++ b/erts/emulator/test/multi_load_SUITE.erl @@ -0,0 +1,181 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 1999-2016. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +-module(multi_load_SUITE). +-export([all/0, suite/0, many/1, on_load/1, errors/1]). + +-include_lib("common_test/include/ct.hrl"). + +suite() -> + [{ct_hooks,[ts_install_cth]}]. + +all() -> + [many,on_load,errors]. + +many(_Config) -> + Ms = make_modules(100, fun many_module/1), + + io:put_chars("Light load\n" + "=========="), + many_measure(Ms), + + _ = [spawn_link(fun many_worker/0) || _ <- lists:seq(1, 8)], + erlang:yield(), + io:put_chars("Heavy load\n" + "=========="), + many_measure(Ms), + ok. + +many_module(M) -> + ["-module("++M++").", + "-compile(export_all).", + "f1() -> ok.", + "f2() -> ok.", + "f3() -> ok.", + "f4() -> ok."]. + +many_measure(Ms) -> + many_purge(Ms), + MsPrep1 = prepare_modules(Ms), + Us1 = ms(fun() -> many_load_seq(MsPrep1) end), + many_try_call(Ms), + many_purge(Ms), + MsPrep2 = prepare_modules(Ms), + Us2 = ms(fun() -> many_load_par(MsPrep2) end), + many_try_call(Ms), + io:format("# modules: ~9w\n" + "Sequential: ~9w µs\n" + "Parallel: ~9w µs\n" + "Ratio: ~9w\n", + [length(Ms),Us1,Us2,divide(Us1,Us2)]), + ok. + +divide(A,B) when B > 0 -> A div B; +divide(_,_) -> inf. + +many_load_seq(Ms) -> + [erlang:finish_loading([M]) || M <- Ms], + ok. + +many_load_par(Ms) -> + erlang:finish_loading(Ms). + +many_purge(Ms) -> + _ = [catch erlang:purge_module(M) || {M,_} <- Ms], + ok. + +many_try_call(Ms) -> + _ = [begin + ok = M:f1(), + ok = M:f2(), + ok = M:f3(), + ok = M:f4() + end || {M,_} <- Ms], + ok. + +many_worker() -> + many_worker(lists:seq(1, 100)). + +many_worker(L) -> + N0 = length(L), + N1 = N0 * N0 * N0, + N2 = N1 div (N0 * N0), + N3 = N2 + 10, + _ = N3 - 10, + many_worker(L). + + +on_load(_Config) -> + On = make_modules(2, fun on_load_module/1), + OnPrep = prepare_modules(On), + {'EXIT',{system_limit,_}} = (catch erlang:finish_loading(OnPrep)), + + Normal = make_modules(1, fun on_load_normal/1), + Mixed = Normal ++ tl(On), + MixedPrep = prepare_modules(Mixed), + {'EXIT',{system_limit,_}} = (catch erlang:finish_loading(MixedPrep)), + + [false,true] = [erlang:has_prepared_code_on_load(Code) || + Code <- MixedPrep], + {'EXIT',{badarg,_}} = (catch erlang:has_prepared_code_on_load(<<1,2,3>>)), + Magic = ets:match_spec_compile([{'_',[true],['$_']}]), + {'EXIT',{badarg,_}} = (catch erlang:has_prepared_code_on_load(Magic)), + + SingleOnPrep = tl(OnPrep), + {on_load,[OnLoadMod]} = erlang:finish_loading(SingleOnPrep), + ok = erlang:call_on_load_function(OnLoadMod), + ok. + +on_load_module(M) -> + ["-module("++M++").", + "-on_load(f/0).", + "f() -> ok."]. + +on_load_normal(M) -> + ["-module("++M++")."]. + + +errors(_Config) -> + finish_loading_badarg(x), + finish_loading_badarg([x|y]), + finish_loading_badarg([x]), + finish_loading_badarg([<<>>]), + + Mods = make_modules(2, fun errors_module/1), + Ms = lists:sort([M || {M,_} <- Mods]), + Prep = prepare_modules(Mods), + {duplicated,Dups} = erlang:finish_loading(Prep ++ Prep), + Ms = lists:sort(Dups), + ok. + +finish_loading_badarg(Arg) -> + {'EXIT',{badarg,[{erlang,finish_loading,[Arg],_}|_]}} = + (catch erlang:finish_loading(Arg)). + +errors_module(M) -> + ["-module("++M++").", + "-export([f/0]).", + "f() -> ok."]. + +%%% +%%% Common utilities +%%% + +ms(Fun) -> + {Ms,ok} = timer:tc(Fun), + Ms. + +make_modules(0, _) -> + []; +make_modules(N, Fun) -> + U = erlang:unique_integer([positive]), + M0 = "m__" ++ integer_to_list(N) ++ "_" ++ integer_to_list(U), + Contents = Fun(M0), + Forms = [make_form(S) || S <- Contents], + {ok,M,Code} = compile:forms(Forms), + [{M,Code}|make_modules(N-1, Fun)]. + +make_form(S) -> + {ok,Toks,_} = erl_scan:string(S), + {ok,Form} = erl_parse:parse_form(Toks), + Form. + +prepare_modules(Ms) -> + [erlang:prepare_loading(M, Code) || {M,Code} <- Ms]. |