%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1998-2013. 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(beam_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
packed_registers/1, apply_last/1, apply_last_bif/1,
buildo_mucho/1, heap_sizes/1, big_lists/1, fconv/1,
select_val/1]).
-export([applied/2]).
-include_lib("common_test/include/ct.hrl").
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[packed_registers, apply_last, apply_last_bif,
buildo_mucho, heap_sizes, big_lists, select_val].
groups() ->
[].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
%% Verify that apply(M, F, A) is really tail recursive.
apply_last(Config) when is_list(Config) ->
Pid = spawn(?MODULE, applied, [self(), 10000]),
Size =
receive
{Pid, finished} ->
stack_size(Pid)
after 30000 ->
?t:fail("applied/2 timed out.")
end,
Pid ! die,
?t:format("Size: ~p~n", [Size]),
if
Size < 700 ->
ok;
true ->
?t:fail("10000 apply() grew stack too much.")
end,
ok.
stack_size(Pid) ->
{heap_size, HS}=process_info(Pid, heap_size),
{stack_size,SS}=process_info(Pid, stack_size),
HS+SS.
applied(Starter, 0) ->
Starter ! {self(), finished},
receive
die ->
ok
end,
ok;
applied(Starter, N) ->
apply(?MODULE, applied, [Starter, N-1]).
%% Verify that tail-recursive use of apply(M,F,A) on a Bif works."
apply_last_bif(Config) when is_list(Config) ->
apply(erlang, abs, [1]).
%% Test three high register numbers in a put_list instruction
%% (to test whether packing works properly).
packed_registers(Config) when is_list(Config) ->
PrivDir = ?config(priv_dir, Config),
Mod = packed_regs,
Name = filename:join(PrivDir, atom_to_list(Mod) ++ ".erl"),
%% Generate a module which generates a list of tuples.
%% put_list(A) -> [{A, 600}, {A, 999}, ... {A, 0}].
Code = gen_packed_regs(600, ["-module("++atom_to_list(Mod)++").\n",
"-export([put_list/1]).\n",
"put_list(A) ->\n["]),
ok = file:write_file(Name, Code),
%% Compile the module.
io:format("Compiling: ~s\n", [Name]),
CompRc = compile:file(Name, [{outdir, PrivDir}, report]),
io:format("Result: ~p\n",[CompRc]),
{ok, Mod} = CompRc,
%% Load it.
io:format("Loading...\n",[]),
LoadRc = code:load_abs(filename:join(PrivDir, atom_to_list(Mod))),
{module,_Module} = LoadRc,
%% Call it and verify result.
Term = {a, b},
L = Mod:put_list(Term),
verify_packed_regs(L, Term, 600),
ok.
gen_packed_regs(0, Acc) ->
[Acc|"{A,0}].\n"];
gen_packed_regs(N, Acc) ->
gen_packed_regs(N-1, [Acc,"{A,",integer_to_list(N)|"},\n"]).
verify_packed_regs([], _, -1) -> ok;
verify_packed_regs([{Term, N}| T], Term, N) ->
verify_packed_regs(T, Term, N-1);
verify_packed_regs(L, Term, N) ->
ok = io:format("Expected [{~p, ~p}|T]; got\n~p\n", [Term, N, L]),
test_server:fail().
buildo_mucho(Config) when is_list(Config) ->
buildo_mucho_1(),
ok.
buildo_mucho_1() ->
%% Thanks to Per Gustafsson, HiPE.
[{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},
{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1},{<<>>,1}].
heap_sizes(Config) when is_list(Config) ->
Sizes = erlang:system_info(heap_sizes),
io:format("~p heap sizes\n", [length(Sizes)]),
io:format("~p\n", [Sizes]),
%% Verify that heap sizes increase monotonically.
Largest = lists:foldl(fun(E, P) when is_integer(P), E > P -> E;
(E, []) -> E
end, [], Sizes),
%% Verify that the largest heap size consists of
%% - 31 bits of bytes on 32 bits arch
%% - atleast 52 bits of bytes (48 is the maximum virtual address)
%% and at the most 63 bits on 64 bit archs
%% heap sizes are in words
case erlang:system_info(wordsize) of
8 ->
0 = (Largest*8) bsr 63,
true = (Largest*8) > (1 bsl 52);
4 ->
1 = (Largest*4) bsr 31
end,
ok.
%% Thanks to Igor Goryachev.
big_lists(Config) when is_list(Config) ->
b(),
ok.
a() ->
{selected,
["uid",
"nickname",
"n_family",
"n_given",
"email_pref",
"tel_home_number",
"tel_cellular_number",
"adr_home_country",
"adr_home_locality",
"adr_home_region",
"url",
"gender",
"bday",
"constitution",
"height",
"weight",
"hair",
"routine",
"smoke",
"maritalstatus",
"children",
"independence",
"school_number",
"school_locality",
"school_title",
"school_period",
"org_orgname",
"title",
"adr_work_locality",
"photo_type",
"photo_binval"],
[{"test"}]}.
b() ->
case a() of
{selected,
["uid",
"nickname",
"n_family",
"n_given",
"email_pref",
"tel_home_number",
"tel_cellular_number",
"adr_home_country",
"adr_home_locality",
"adr_home_region",
"url",
"gender",
"bday",
"constitution",
"height",
"weight",
"hair",
"routine",
"smoke",
"maritalstatus",
"children",
"independence",
"school_number",
"school_locality",
"school_title",
"school_period",
"org_orgname",
"title",
"adr_work_locality",
"photo_type",
"photo_binval"],
_} ->
ok
end.
fconv(Config) when is_list(Config) ->
do_fconv(atom),
do_fconv(nil),
do_fconv(tuple_literal),
3.0 = do_fconv(1.0, 2.0),
ok.
do_fconv(Type) ->
try
do_fconv(Type, 1.0),
test_server:fail()
catch
error:badarith ->
ok
end.
do_fconv(atom, Float) when is_float(Float) ->
Float + a;
do_fconv(nil, Float) when is_float(Float) ->
Float + [];
do_fconv(tuple_literal, Float) when is_float(Float) ->
Float + {a,b}.
select_val(Config) when is_list(Config) ->
zero = do_select_val(0),
big = do_select_val(1 bsl 64),
integer = do_select_val(42),
ok.
do_select_val(X) ->
case X of
0 ->
zero;
1 bsl 64 ->
big;
Int when is_integer(Int) ->
integer
end.
