%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2010-2014. 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(dirty_nif_SUITE).
%%-define(line_trace,true).
-define(CHECK(Exp,Got), check(Exp,Got,?LINE)).
%%-define(CHECK(Exp,Got), Exp = Got).
-include_lib("common_test/include/ct.hrl").
-export([all/0, suite/0,
init_per_suite/1, end_per_suite/1,
init_per_testcase/2, end_per_testcase/2,
dirty_nif/1, dirty_nif_send/1,
dirty_nif_exception/1, call_dirty_nif_exception/1,
dirty_scheduler_exit/1]).
-define(nif_stub,nif_stub_error(?LINE)).
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[dirty_nif,
dirty_nif_send,
dirty_nif_exception,
dirty_scheduler_exit].
init_per_suite(Config) ->
try erlang:system_info(dirty_cpu_schedulers) of
N when is_integer(N), N > 0 ->
case lib_loaded() of
false ->
ok = erlang:load_nif(
filename:join(?config(data_dir, Config),
"dirty_nif_SUITE"), []);
true ->
ok
end,
Config
catch _:_ ->
{skipped, "No dirty scheduler support"}
end.
end_per_suite(_Config) ->
ok.
init_per_testcase(Case, Config) ->
[{testcase, Case} | Config].
end_per_testcase(_Case, _Config) ->
ok.
dirty_nif(Config) when is_list(Config) ->
Val1 = 42,
Val2 = "Erlang",
Val3 = list_to_binary([Val2, 0]),
{Val1, Val2, Val3} = call_dirty_nif(Val1, Val2, Val3),
LargeArray = lists:duplicate(1000, ok),
LargeArray = call_dirty_nif_zero_args(),
ok.
dirty_nif_send(Config) when is_list(Config) ->
Parent = self(),
Pid = spawn_link(fun() ->
Self = self(),
{ok, Self} = receive_any(),
Parent ! {ok, Self}
end),
{ok, Pid} = send_from_dirty_nif(Pid),
{ok, Pid} = receive_any(),
ok.
dirty_nif_exception(Config) when is_list(Config) ->
try
%% this checks that the expected exception occurs when the
%% dirty NIF returns the result of enif_make_badarg
%% directly
call_dirty_nif_exception(1),
ct:fail(expected_badarg)
catch
error:badarg ->
[{?MODULE,call_dirty_nif_exception,[1],_}|_] =
erlang:get_stacktrace(),
ok
end,
try
%% this checks that the expected exception occurs when the
%% dirty NIF calls enif_make_badarg at some point but then
%% returns a value that isn't an exception
call_dirty_nif_exception(0),
ct:fail(expected_badarg)
catch
error:badarg ->
[{?MODULE,call_dirty_nif_exception,[0],_}|_] =
erlang:get_stacktrace(),
ok
end,
%% this checks that a dirty NIF can raise various terms as
%% exceptions
ok = nif_raise_exceptions(call_dirty_nif_exception).
nif_raise_exceptions(NifFunc) ->
ExcTerms = [{error, test}, "a string", <<"a binary">>,
42, [1,2,3,4,5], [{p,1},{p,2},{p,3}]],
lists:foldl(fun(Term, ok) ->
try
erlang:apply(?MODULE,NifFunc,[Term]),
ct:fail({expected,Term})
catch
error:Term ->
[{?MODULE,NifFunc,[Term],_}|_] = erlang:get_stacktrace(),
ok
end
end, ok, ExcTerms).
dirty_scheduler_exit(Config) when is_list(Config) ->
try
erlang:system_info(dirty_cpu_schedulers),
dirty_scheduler_exit_test(Config)
catch
error:badarg ->
{skipped, "No dirty scheduler support"}
end.
dirty_scheduler_exit_test(Config) ->
{ok, Node} = start_node(Config, "+SDio 1"),
Path = proplists:get_value(data_dir, Config),
NifLib = filename:join(Path, atom_to_list(?MODULE)),
[ok] = mcall(Node,
[fun() ->
ok = erlang:load_nif(NifLib, []),
Start = erlang:monotonic_time(milli_seconds),
ok = test_dirty_scheduler_exit(),
End = erlang:monotonic_time(milli_seconds),
io:format("Time=~p ms~n", [End-Start]),
ok
end]),
stop_node(Node),
ok.
test_dirty_scheduler_exit() ->
process_flag(trap_exit,true),
test_dse(10,[]).
test_dse(0,Pids) ->
timer:sleep(100),
kill_dse(Pids,[]);
test_dse(N,Pids) ->
Pid = spawn_link(fun () ->
F = fun dirty_sleeper/0,
F()
end),
test_dse(N-1,[Pid|Pids]).
kill_dse([],Killed) ->
wait_dse(Killed);
kill_dse([Pid|Pids],AlreadyKilled) ->
exit(Pid,kill),
kill_dse(Pids,[Pid|AlreadyKilled]).
wait_dse([]) ->
ok;
wait_dse([Pid|Pids]) ->
receive
{'EXIT',Pid,Reason} ->
killed = Reason
end,
wait_dse(Pids).
%%
%% Internal...
%%
receive_any() ->
receive M -> M end.
start_node(Config) ->
start_node(Config, "").
start_node(Config, Args) when is_list(Config) ->
Pa = filename:dirname(code:which(?MODULE)),
Name = list_to_atom(atom_to_list(?MODULE)
++ "-"
++ atom_to_list(proplists:get_value(testcase, Config))
++ "-"
++ integer_to_list(erlang:system_time(seconds))
++ "-"
++ integer_to_list(erlang:unique_integer([positive]))),
test_server:start_node(Name, slave, [{args, "-pa "++Pa++" "++Args}]).
stop_node(Node) ->
test_server:stop_node(Node).
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).
%% The NIFs:
lib_loaded() -> false.
call_nif_schedule(_,_) -> ?nif_stub.
call_dirty_nif(_,_,_) -> ?nif_stub.
send_from_dirty_nif(_) -> ?nif_stub.
call_dirty_nif_exception(_) -> ?nif_stub.
call_dirty_nif_zero_args() -> ?nif_stub.
dirty_sleeper() -> ?nif_stub.
nif_stub_error(Line) ->
exit({nif_not_loaded,module,?MODULE,line,Line}).
