%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2010. 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.
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%%
%%%-------------------------------------------------------------------
%%% File : system_info_SUITE.erl
%%% Author : Rickard Green <[email protected]>
%%% Description : Misc tests of erlang:system_info/1
%%%
%%% Created : 15 Jul 2005 by Rickard Green <[email protected]>
%%%-------------------------------------------------------------------
-module(system_info_SUITE).
-author('[email protected]').
%-define(line_trace, 1).
-include("test_server.hrl").
%-compile(export_all).
-export([all/1, init_per_testcase/2, fin_per_testcase/2]).
-export([process_count/1, system_version/1, misc_smoke_tests/1, heap_size/1, wordsize/1]).
-define(DEFAULT_TIMEOUT, ?t:minutes(2)).
all(doc) -> [];
all(suite) -> [process_count, system_version, misc_smoke_tests, heap_size, wordsize].
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 -------------------------------------------------------------
%%%
process_count(doc) -> [];
process_count(suite) -> [];
process_count(Config) when is_list(Config) ->
case catch erlang:system_info(modified_timing_level) of
Level when is_integer(Level) ->
{skipped,
"Modified timing (level " ++ integer_to_list(Level)
++ ") is enabled. spawn() is too slow for this "
" test when modified timing is enabled."};
_ ->
process_count_test()
end.
process_count_test() ->
?line OldPrio = process_flag(priority, max),
?line check_procs(10),
?line check_procs(11234),
?line check_procs(57),
?line check_procs(1030),
?line check_procs(687),
?line check_procs(7923),
?line check_procs(5302),
?line check_procs(12456),
?line check_procs(14),
?line check_procs(1125),
?line check_procs(236),
?line check_procs(125),
?line check_procs(2346),
?line process_flag(priority, OldPrio),
?line ok.
check_procs(N) ->
?line CP = length(processes()),
?line Procs = start_procs(N),
?line check_pc(CP+N),
?line stop_procs(Procs),
?line check_pc(CP).
check_pc(E) ->
?line P = length(processes()),
?line SI = erlang:system_info(process_count),
?line ?t:format("E=~p; P=~p; SI=~p~n", [E, P, SI]),
?line E = P,
?line P = SI.
start_procs(N) ->
lists:map(fun (_) ->
P = spawn_opt(fun () ->
receive after infinity -> bye end
end,
[{priority, max}]),
{P, erlang:monitor(process, P)}
end,
lists:seq(1, N)).
stop_procs(PMs) ->
lists:foreach(fun ({P, _}) ->
exit(P, boom)
end, PMs),
lists:foreach(fun ({P, M}) ->
receive {'DOWN', M, process, P, boom} -> ok end
end, PMs).
system_version(doc) -> [];
system_version(suite) -> [];
system_version(Config) when is_list(Config) ->
?line {comment, erlang:system_info(system_version)}.
misc_smoke_tests(doc) -> [];
misc_smoke_tests(suite) -> [];
misc_smoke_tests(Config) when is_list(Config) ->
?line true = is_binary(erlang:system_info(info)),
?line true = is_binary(erlang:system_info(procs)),
?line true = is_binary(erlang:system_info(loaded)),
?line true = is_binary(erlang:system_info(dist)),
?line ok.
heap_size(doc) -> [];
heap_size(suite) -> [];
heap_size(Config) when is_list(Config) ->
?line {min_bin_vheap_size, VHmin} = erlang:system_info(min_bin_vheap_size),
?line {min_heap_size, Hmin} = erlang:system_info(min_heap_size),
?line GCinf = erlang:system_info(garbage_collection),
?line VHmin = proplists:get_value(min_bin_vheap_size, GCinf),
?line Hmin = proplists:get_value(min_heap_size, GCinf),
ok.
wordsize(suite) ->
[];
wordsize(doc) ->
["Tests the various wordsize variants"];
wordsize(Config) when is_list(Config) ->
?line A = erlang:system_info(wordsize),
?line true = is_integer(A),
?line A = erlang:system_info({wordsize,internal}),
?line B = erlang:system_info({wordsize,external}),
?line true = A =< B,
case {B,A} of
{4,4} ->
{comment, "True 32-bit emulator"};
{8,8} ->
{comment, "True 64-bit emulator"};
{8,4} ->
{comment, "Halfword 64-bit emulator"};
Other ->
exit({unexpected_wordsizes,Other})
end.
