%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2018. 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(dump_SUITE).
-include_lib("common_test/include/ct.hrl").
-export([all/0, suite/0, init_per_testcase/2, end_per_testcase/2]).
-export([signal_abort/1, exiting_dump/1, free_dump/1]).
-export([load/0]).
-include_lib("kernel/include/file.hrl").
suite() ->
[{ct_hooks,[ts_install_cth]},
{timetrap, {minutes, 2}}].
all() ->
[signal_abort, exiting_dump, free_dump].
init_per_testcase(signal_abort, Config) ->
SO = erlang:system_info(schedulers_online),
erts_debug:set_internal_state(available_internal_state, true),
Dump = erts_debug:get_internal_state(scheduler_dump),
erts_debug:set_internal_state(available_internal_state, false),
if SO < 3 ->
{skip, "not enough schedulers"};
not Dump ->
{skip, "the platform does not support scheduler dump"};
Dump ->
Config
end;
init_per_testcase(_, Config) ->
Config.
end_per_testcase(_, Config) ->
Config.
%%%
%%% The test cases -------------------------------------------------------------
%%%
%% Test that a snapshot is taken of other schedulers using a signal
%% when a crash dump is generated.
signal_abort(Config) ->
Dump = filename:join(proplists:get_value(priv_dir, Config),"signal_abort.dump"),
{ok, Node} = start_node(Config),
SO = rpc:call(Node, erlang, system_info, [schedulers_online]),
_P1 = spawn_opt(Node, ?MODULE, load, [], [{scheduler, (0 rem SO) + 1}]),
_P2 = spawn_opt(Node, ?MODULE, load, [], [{scheduler, (1 rem SO) + 1}]),
_P3 = spawn_opt(Node, ?MODULE, load, [], [{scheduler, (2 rem SO) + 1}]),
_P4 = spawn_opt(Node, ?MODULE, load, [], [{scheduler, (3 rem SO) + 1}]),
_P5 = spawn_opt(Node, ?MODULE, load, [], [{scheduler, (4 rem SO) + 1}]),
_P6 = spawn_opt(Node, ?MODULE, load, [], [{scheduler, (5 rem SO) + 1}]),
timer:sleep(500),
true = rpc:call(Node, os, putenv, ["ERL_CRASH_DUMP",Dump]),
rpc:call(Node, erlang, halt, ["dump"]),
{ok, Bin} = get_dump_when_done(Dump),
{match, Matches} = re:run(Bin,"Current Process: <",[global]),
ct:log("Found ~p",[Matches]),
true = length(Matches) > 1,
file:delete(Dump),
ok.
load() ->
lists:seq(1,10000),
load().
%% Test that crash dumping when a process is in the state EXITING works
exiting_dump(Config) when is_list(Config) ->
Dump = filename:join(proplists:get_value(priv_dir, Config),"signal_abort.dump"),
{ok, Node} = start_node(Config),
Self = self(),
Pid = spawn_link(Node,
fun() ->
[begin
T = ets:new(hej,[]),
[ets:insert(T,{I,I}) || I <- lists:seq(1,1000)]
end || _ <- lists:seq(1,1000)],
Self ! ready,
receive ok -> ok end
end),
true = rpc:call(Node, os, putenv, ["ERL_CRASH_DUMP",Dump]),
receive ready -> unlink(Pid), Pid ! ok end,
rpc:call(Node, erlang, halt, ["dump"]),
{ok, Bin} = get_dump_when_done(Dump),
{match, Matches} = re:run(Bin,"^State: Exiting", [global, multiline]),
ct:log("Found ~p",[Matches]),
true = length(Matches) == 1,
file:delete(Dump),
ok.
%% Test that crash dumping when a process is in the state FREE works
free_dump(Config) when is_list(Config) ->
Dump = filename:join(proplists:get_value(priv_dir, Config),"signal_abort.dump"),
{ok, NodeA} = start_node(Config),
{ok, NodeB} = start_node(Config),
Self = self(),
PidA = spawn_link(
NodeA,
fun() ->
Self ! ready,
Reason = lists:duplicate(1000000,100),
receive
ok ->
spawn(fun() ->
erlang:system_monitor(self(), [busy_dist_port]),
timer:sleep(5),
receive
M ->
io:format("~p",[M])
%% We may want to add this timeout here in-case no busy condition is triggered
%% after 60 * 1000 ->
%% io:format("Timeout")
end,
erlang:halt("dump")
end),
exit(Reason)
end
end),
PidB = spawn_link(NodeB,
fun() ->
[erlang:monitor(process, PidA) || _ <- lists:seq(1,10000)],
Self ! done,
receive _ -> ok end
end),
receive done -> ok end,
true = rpc:call(NodeA, os, putenv, ["ERL_CRASH_DUMP",Dump]),
%% Make the node busy towards NodeB for 10 seconds.
BusyPid = rpc:call(NodeA, distribution_SUITE, make_busy, [NodeB,10000]),
ct:pal("~p",[BusyPid]),
receive ready -> unlink(PidA), PidA ! ok end,
{ok, Bin} = get_dump_when_done(Dump),
{match, Matches} = re:run(Bin,"^State: Non Existing", [global, multiline]),
ct:log("Found ~p",[Matches]),
true = length(Matches) == 1,
file:delete(Dump),
unlink(PidB),
rpc:call(NodeB, erlang, halt, [0]),
ok.
get_dump_when_done(Dump) ->
case file:read_file_info(Dump) of
{ok, #file_info{ size = Sz }} ->
get_dump_when_done(Dump, Sz);
{error, enoent} ->
timer:sleep(1000),
get_dump_when_done(Dump)
end.
get_dump_when_done(Dump, Sz) ->
timer:sleep(1000),
case file:read_file_info(Dump) of
{ok, #file_info{ size = Sz }} ->
{ok, Bin} = file:read_file(Dump),
ct:log("~s",[Bin]),
{ok, Bin};
{ok, #file_info{ size = NewSz }} ->
get_dump_when_done(Dump, NewSz)
end.
start_node(Config) 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(second))
++ "-"
++ integer_to_list(erlang:unique_integer([positive]))),
test_server:start_node(Name, slave, [{args, "-pa "++Pa}]).
