diff options
Diffstat (limited to 'lib/stdlib/test/gen_server_SUITE.erl')
| -rw-r--r-- | lib/stdlib/test/gen_server_SUITE.erl | 115 |
1 files changed, 105 insertions, 10 deletions
diff --git a/lib/stdlib/test/gen_server_SUITE.erl b/lib/stdlib/test/gen_server_SUITE.erl index 6efdce78a1..99388ba2e3 100644 --- a/lib/stdlib/test/gen_server_SUITE.erl +++ b/lib/stdlib/test/gen_server_SUITE.erl @@ -1,19 +1,19 @@ %% %% %CopyrightBegin% -%% -%% Copyright Ericsson AB 1996-2009. All Rights Reserved. -%% +%% +%% Copyright Ericsson AB 1996-2010. 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% %% -module(gen_server_SUITE). @@ -30,7 +30,8 @@ call_remote_n1/1, call_remote_n2/1, call_remote_n3/1, spec_init/1, spec_init_local_registered_parent/1, spec_init_global_registered_parent/1, - otp_5854/1, hibernate/1, otp_7669/1, call_format_status/1 + otp_5854/1, hibernate/1, otp_7669/1, call_format_status/1, + error_format_status/1, call_with_huge_message_queue/1 ]). % spawn export @@ -51,7 +52,9 @@ all(suite) -> call_remote_n2, call_remote_n3, spec_init, spec_init_local_registered_parent, spec_init_global_registered_parent, - otp_5854, hibernate, otp_7669, call_format_status]. + otp_5854, hibernate, otp_7669, + call_format_status, error_format_status, + call_with_huge_message_queue]. -define(default_timeout, ?t:minutes(1)). @@ -895,15 +898,105 @@ call_format_status(doc) -> ["Test that sys:get_status/1,2 calls format_status/2"]; call_format_status(Config) when is_list(Config) -> ?line {ok, Pid} = gen_server:start_link({local, call_format_status}, - gen_server_SUITE, [], []), + ?MODULE, [], []), ?line Status1 = sys:get_status(call_format_status), ?line {status, Pid, _Mod, [_PDict, running, _Parent, _, Data1]} = Status1, ?line [format_status_called | _] = lists:reverse(Data1), ?line Status2 = sys:get_status(call_format_status, 5000), ?line {status, Pid, _Mod, [_PDict, running, _Parent, _, Data2]} = Status2, ?line [format_status_called | _] = lists:reverse(Data2), + + %% check that format_status can handle a name being a pid (atom is + %% already checked by the previous test) + ?line {ok, Pid3} = gen_server:start_link(gen_server_SUITE, [], []), + ?line Status3 = sys:get_status(Pid3), + ?line {status, Pid3, _Mod, [_PDict3, running, _Parent, _, Data3]} = Status3, + ?line [format_status_called | _] = lists:reverse(Data3), + + %% check that format_status can handle a name being a term other than a + %% pid or atom + GlobalName1 = {global, "CallFormatStatus"}, + ?line {ok, Pid4} = gen_server:start_link(GlobalName1, + gen_server_SUITE, [], []), + ?line Status4 = sys:get_status(Pid4), + ?line {status, Pid4, _Mod, [_PDict4, running, _Parent, _, Data4]} = Status4, + ?line [format_status_called | _] = lists:reverse(Data4), + GlobalName2 = {global, {name, "term"}}, + ?line {ok, Pid5} = gen_server:start_link(GlobalName2, + gen_server_SUITE, [], []), + ?line Status5 = sys:get_status(GlobalName2), + ?line {status, Pid5, _Mod, [_PDict5, running, _Parent, _, Data5]} = Status5, + ?line [format_status_called | _] = lists:reverse(Data5), + ok. + +%% Verify that error termination correctly calls our format_status/2 fun +%% +error_format_status(suite) -> + []; +error_format_status(doc) -> + ["Test that an error termination calls format_status/2"]; +error_format_status(Config) when is_list(Config) -> + ?line error_logger_forwarder:register(), + OldFl = process_flag(trap_exit, true), + State = "called format_status", + ?line {ok, Pid} = gen_server:start_link(?MODULE, {state, State}, []), + ?line {'EXIT',{crashed,_}} = (catch gen_server:call(Pid, crash)), + receive + {'EXIT', Pid, crashed} -> + ok + end, + receive + {error,_GroupLeader,{Pid, + "** Generic server"++_, + [Pid,crash,State,crashed]}} -> + ok; + Other -> + ?line io:format("Unexpected: ~p", [Other]), + ?line ?t:fail() + end, + ?t:messages_get(), + process_flag(trap_exit, OldFl), + ok. + +%% Test that the time for a huge message queue is not +%% significantly slower than with an empty message queue. +call_with_huge_message_queue(Config) when is_list(Config) -> + ?line Pid = spawn_link(fun echo_loop/0), + + ?line {Time,ok} = tc(fun() -> calls(10, Pid) end), + + ?line [self() ! {msg,N} || N <- lists:seq(1, 500000)], + erlang:garbage_collect(), + ?line {NewTime,ok} = tc(fun() -> calls(10, Pid) end), + io:format("Time for empty message queue: ~p", [Time]), + io:format("Time for huge message queue: ~p", [NewTime]), + + case (NewTime+1) / (Time+1) of + Q when Q < 10 -> + ok; + Q -> + io:format("Q = ~p", [Q]), + ?line ?t:fail() + end, ok. +calls(0, _) -> ok; +calls(N, Pid) -> + {ultimate_answer,42} = call(Pid, {ultimate_answer,42}), + calls(N-1, Pid). + +call(Pid, Msg) -> + gen_server:call(Pid, Msg, infinity). + +tc(Fun) -> + timer:tc(erlang, apply, [Fun,[]]). + +echo_loop() -> + receive + {'$gen_call',{Pid,Ref},Msg} -> + Pid ! {Ref,Msg}, + echo_loop() + end. %%-------------------------------------------------------------- %% Help functions to spec_init_* @@ -1064,5 +1157,7 @@ terminate({From, stopped_info}, _State) -> terminate(_Reason, _State) -> ok. -format_status(_Opt, [_PDict, _State]) -> - [format_status_called]. +format_status(terminate, [_PDict, State]) -> + State; +format_status(normal, [_PDict, _State]) -> + format_status_called. |