%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2009. 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(distribution_SUITE).
-compile(r12).
%% Tests distribution and the tcp driver.
-include("test_server.hrl").
-export([all/1,
ping/1, bulk_send/1, bulk_send_small/1,
bulk_send_big/1,
local_send/1, local_send_small/1, local_send_big/1,
local_send_legal/1, link_to_busy/1, exit_to_busy/1,
lost_exit/1, link_to_dead/1, link_to_dead_new_node/1,
applied_monitor_node/1, ref_port_roundtrip/1, nil_roundtrip/1,
trap_bif/1, trap_bif_1/1, trap_bif_2/1, trap_bif_3/1,
stop_dist/1, dist_auto_connect/1,
dist_auto_connect_never/1, dist_auto_connect_once/1,
dist_parallel_send/1,
atom_roundtrip/1,
atom_roundtrip_r12b/1,
contended_atom_cache_entry/1,
bad_dist_ext/1,
bad_dist_ext_receive/1,
bad_dist_ext_process_info/1,
bad_dist_ext_control/1,
bad_dist_ext_connection_id/1]).
-export([init_per_testcase/2, fin_per_testcase/2]).
%% Internal exports.
-export([sender/3, receiver2/2, dummy_waiter/0, dead_process/0,
roundtrip/1, bounce/1, do_dist_auto_connect/1, inet_rpc_server/1,
dist_parallel_sender/3, dist_parallel_receiver/0,
dist_evil_parallel_receiver/0]).
all(suite) -> [
ping, bulk_send, local_send, link_to_busy, exit_to_busy,
lost_exit, link_to_dead, link_to_dead_new_node,
applied_monitor_node, ref_port_roundtrip, nil_roundtrip,
stop_dist, trap_bif, dist_auto_connect, dist_parallel_send,
atom_roundtrip, atom_roundtrip_r12b,
contended_atom_cache_entry,
bad_dist_ext
].
-define(DEFAULT_TIMETRAP, 4*60*1000).
init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
Dog=?t:timetrap(?DEFAULT_TIMETRAP),
[{watchdog, Dog},{testcase, Func}|Config].
fin_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
Dog=?config(watchdog, Config),
?t:timetrap_cancel(Dog).
%%% Don't be too hard on vxworks, the cross server gets nodedown
%%% cause the card is too busy if we don't sleep a little between pings.
sleep() ->
case os:type() of
vxworks ->
receive
after 10 ->
ok
end;
_ ->
ok
end.
ping(doc) ->
["Tests pinging a node in different ways."];
ping(Config) when is_list(Config) ->
Times = 1024,
%% Ping a non-existing node many times. This used to crash the emulator
%% on Windows.
?line Host = hostname(),
?line BadName = list_to_atom("__pucko__@" ++ Host),
?line io:format("Pinging ~s (assumed to not exist)", [BadName]),
?line test_server:do_times(Times,
fun() -> pang = net_adm:ping(BadName),
sleep()
end),
%% Pings another node.
?line {ok, OtherNode} = start_node(distribution_SUITE_other),
?line io:format("Pinging ~s (assumed to exist)", [OtherNode]),
?line test_server:do_times(Times, fun() -> pong = net_adm:ping(OtherNode),sleep() end),
?line stop_node(OtherNode),
%% Pings our own node many times.
?line Node = node(),
?line io:format("Pinging ~s (the same node)", [Node]),
?line test_server:do_times(Times, fun() -> pong = net_adm:ping(Node),sleep() end),
ok.
bulk_send(doc) ->
["Tests sending large amount of data to another node and measure",
"the time. This tests that a process that is suspended on a ",
"busy port will eventually be resumed."];
bulk_send(suite) ->
[bulk_send_small, bulk_send_big].
bulk_send_small(Config) when is_list(Config) ->
?line bulk_send(64, 32).
bulk_send_big(Config) when is_list(Config) ->
?line bulk_send(32, 64).
bulk_send(Terms, BinSize) ->
?line Dog = test_server:timetrap(test_server:seconds(30)),
?line io:format("Sending ~w binaries, each of size ~w K",
[Terms, BinSize]),
?line {ok, Node} = start_node(bulk_receiver),
?line Recv = spawn(Node, erlang, apply, [fun receiver/2, [0, 0]]),
?line Bin = list_to_binary(lists:duplicate(BinSize*1024, 253)),
?line Size = Terms*size(Bin),
?line {Elapsed, {Terms, Size}} = test_server:timecall(?MODULE, sender,
[Recv, Bin, Terms]),
?line stop_node(Node),
?line test_server:timetrap_cancel(Dog),
{comment, integer_to_list(trunc(Size/1024/Elapsed+0.5)) ++ " K/s"}.
sender(To, _Bin, 0) ->
To ! {done, self()},
receive
Any ->
Any
end;
sender(To, Bin, Left) ->
To ! {term, Bin},
sender(To, Bin, Left-1).
%% Receiver process to be run on a slave node.
receiver(Terms, Size) ->
receive
{term, Bin} ->
receiver(Terms+1, Size+size(Bin));
{done, ReplyTo} ->
ReplyTo ! {Terms, Size}
end.
local_send(suite) ->
[local_send_small, local_send_big, local_send_legal];
local_send(doc) ->
["Tests sending small and big messages to a non-existing ",
"local registered process."].
local_send_big(doc) ->
["Sends several big message to an non-registered process on ",
"the local node."];
local_send_big(Config) when is_list(Config) ->
Data0=local_send_big(doc)++local_send(doc),
Data1=[Data0,[Data0, Data0, [Data0], Data0],Data0],
Data2=Data0++lists:flatten(Data1)++
list_to_binary(lists:flatten(Data1)),
Func=fun() -> Data2= {arbitrary_name, node()} ! Data2 end,
?line test_server:do_times(4096, Func),
ok.
local_send_small(doc) ->
["Sends a small message to an non-registered process on the ",
"local node."];
local_send_small(Config) when is_list(Config) ->
Data={some_stupid, "arbitrary", 'Data'},
Func=fun() -> Data= {unregistered_name, node()} ! Data end,
?line test_server:do_times(4096, Func),
ok.
local_send_legal(doc) ->
["Sends data to a registered process on the local node, ",
"as if it was on another node."];
local_send_legal(Config) when is_list(Config) ->
Times=16384,
Data={local_send_legal(doc), local_send_legal(doc)},
Pid=spawn(?MODULE,receiver2, [0, 0]) ,
?line true=register(registered_process, Pid),
Func=fun() -> Data={registered_process, node()} ! Data end,
TotalSize=size(Data)*Times,
?line test_server:do_times(Times, Func),
% Check that all msgs really came through.
Me=self(),
?line {done, Me}=
{registered_process, node()} ! {done, Me},
receive
{Times, TotalSize} ->
ok;
_ ->
test_server:fail("Wrong number of msgs received.")
end,
ok.
receiver2(Num, TotSize) ->
receive
{done, ReplyTo} ->
ReplyTo ! {Num, TotSize};
Stuff ->
receiver2(Num+1, TotSize+size(Stuff))
end.
link_to_busy(doc) -> "Test that link/1 to a busy distribution port works.";
link_to_busy(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(30)),
?line {ok, Node} = start_node(link_to_busy),
?line Recv = spawn(Node, erlang, apply, [fun sink/1, [link_to_busy_sink]]),
Tracer = case os:getenv("TRACE_BUSY_DIST_PORT") of
"true" -> start_busy_dist_port_tracer();
_ -> false
end,
%% We will spawn off a process which will try to link to the other
%% node. The linker process will not actually run until this
%% process is suspended due to the busy distribution port (because
%% of the big send). When the link/1 is run, the linker
%% process will block, too, because of the because busy port,
%% and will later be restarted.
?line do_busy_test(Node, fun () -> linker(Recv) end),
%% Same thing, but we apply link/1 instead of calling it directly.
?line do_busy_test(Node, fun () -> applied_linker(Recv) end),
%% Same thing again, but we apply link/1 in the tail of a function.
?line do_busy_test(Node, fun () -> tail_applied_linker(Recv) end),
%% Done.
?line stop_node(Node),
?line stop_busy_dist_port_tracer(Tracer),
?line test_server:timetrap_cancel(Dog),
ok.
linker(Pid) ->
true = link(Pid),
{links, Links} = process_info(self(), links),
true = lists:member(Pid, Links).
applied_linker(Pid) ->
true = apply(erlang, link, [Pid]),
{links, Links} = process_info(self(), links),
true = lists:member(Pid, Links).
tail_applied_linker(Pid) ->
apply(erlang, link, [Pid]).
exit_to_busy(doc) -> "Test that exit/2 to a busy distribution port works.";
exit_to_busy(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(30)),
?line {ok, Node} = start_node(exit_to_busy),
Tracer = case os:getenv("TRACE_BUSY_DIST_PORT") of
"true" -> start_busy_dist_port_tracer();
_ -> false
end,
%% We will spawn off a process which will try to exit a process on
%% the other node. That process will not actually run until this
%% process is suspended due to the busy distribution port
%% The process executing exit/2 will block,
%% too, because of the busy distribution port, and will be allowed
%% to continue when the port becomes non-busy.
?line Recv1 = spawn(Node, fun () -> sink(exit_to_busy_sink) end),
?line M1 = erlang:monitor(process, Recv1),
?line do_busy_test(Node, fun () -> joey_killer(Recv1) end),
?line receive
{'DOWN', M1, process, Recv1, R1} ->
?line joey_said_die = R1
end,
%% Same thing, but tail call to exit/2.
?line Recv2 = spawn(Node, fun () -> sink(exit_to_busy_sink) end),
?line M2 = erlang:monitor(process, Recv2),
?line do_busy_test(Node, fun () -> tail_joey_killer(Recv2) end),
?line receive
{'DOWN', M2, process, Recv2, R2} ->
?line joey_said_die = R2
end,
%% Same thing, but we apply exit/2 instead of calling it directly.
?line Recv3 = spawn(Node, fun () -> sink(exit_to_busy_sink) end),
?line M3 = erlang:monitor(process, Recv3),
?line do_busy_test(Node, fun () -> applied_joey_killer(Recv3) end),
?line receive
{'DOWN', M3, process, Recv3, R3} ->
?line joey_said_die = R3
end,
%% Same thing again, but we apply exit/2 in the tail of a function.
?line Recv4 = spawn(Node, fun () -> sink(exit_to_busy_sink) end),
?line M4 = erlang:monitor(process, Recv4),
?line do_busy_test(Node, fun () -> tail_applied_joey_killer(Recv4) end),
?line receive
{'DOWN', M4, process, Recv4, R4} ->
?line joey_said_die = R4
end,
%% Done.
?line stop_node(Node),
?line stop_busy_dist_port_tracer(Tracer),
?line test_server:timetrap_cancel(Dog),
ok.
make_busy_data() ->
Size = 1024*1024,
Key = '__busy__port__data__',
case get(Key) of
undefined ->
Data = list_to_binary(lists:duplicate(Size, 253)),
put(Key, Data),
Data;
Data ->
true = is_binary(Data),
true = size(Data) == Size,
Data
end.
make_busy(Node, Time) when is_integer(Time) ->
Own = 500,
freeze_node(Node, Time+Own),
Data = make_busy_data(),
%% first make port busy
Pid = spawn_link(fun () ->
forever(fun () ->
dport_reg_send(Node,
'__noone__',
Data)
end)
end),
receive after Own -> ok end,
until(fun () ->
case process_info(Pid, status) of
{status, suspended} -> true;
_ -> false
end
end),
%% then dist entry
make_busy(Node, [nosuspend], Data),
Pid.
make_busy(Node, Opts, Data) ->
case erlang:send({'__noone__', Node}, Data, Opts) of
nosuspend -> nosuspend;
_ -> make_busy(Node, Opts, Data)
end.
unmake_busy(Pid) ->
unlink(Pid),
exit(Pid, bang).
do_busy_test(Node, Fun) ->
Busy = make_busy(Node, 1000),
{P, M} = spawn_monitor(Fun),
receive after 100 -> ok end,
Pinfo = process_info(P, [status, current_function]),
unmake_busy(Busy),
?t:format("~p : ~p~n", [P, Pinfo]),
case Pinfo of
undefined ->
receive
{'DOWN', M, process, P, Reason} ->
?t:format("~p died with exit reason ~p~n", [P, Reason])
end,
?t:fail(premature_death);
_ ->
%% Don't match arity; it is different in debug and
%% optimized emulator
[{status, suspended},
{current_function, {erlang, bif_return_trap, _}}] = Pinfo,
receive
{'DOWN', M, process, P, Reason} ->
?t:format("~p died with exit reason ~p~n", [P, Reason]),
normal = Reason
end
end.
remote_is_process_alive(Pid) ->
rpc:call(node(Pid), erlang, is_process_alive,
[Pid]).
joey_killer(Pid) ->
exit(Pid, joey_said_die),
until(fun () -> false == remote_is_process_alive(Pid) end).
tail_joey_killer(Pid) ->
exit(Pid, joey_said_die).
applied_joey_killer(Pid) ->
apply(erlang, exit, [Pid, joey_said_die]),
until(fun () -> false == remote_is_process_alive(Pid) end).
tail_applied_joey_killer(Pid) ->
apply(erlang, exit, [Pid, joey_said_die]).
sink(Name) ->
register(Name, self()),
sink1().
sink1() ->
receive
_Any -> sink1()
end.
lost_exit(doc) ->
"Test that EXIT and DOWN messages send to another node are not lost if "
"if the distribution port is busy.";
lost_exit(Config) when is_list(Config) ->
?line {ok, Node} = start_node(lost_exit),
Tracer = case os:getenv("TRACE_BUSY_DIST_PORT") of
"true" -> start_busy_dist_port_tracer();
_ -> false
end,
Self = self(),
Die = make_ref(),
?line R1 = spawn(fun () -> receive after infinity -> ok end end),
?line MR1 = erlang:monitor(process, R1),
?line {L1, ML1} = spawn_monitor(fun() ->
link(R1),
Self ! {self(), linked},
receive
Die ->
exit(controlled_suicide)
end
end),
?line R2 = spawn(fun () ->
M = erlang:monitor(process, L1),
receive
{'DOWN', M, process, L1, R} ->
Self ! {self(), got_down_message, L1, R}
end
end),
?line receive {L1, linked} -> ok end,
Busy = make_busy(Node, 2000),
receive after 100 -> ok end,
L1 ! Die,
?line receive
{'DOWN', ML1, process, L1, RL1} ->
?line controlled_suicide = RL1
end,
receive after 500 -> ok end,
unmake_busy(Busy),
?line receive
{'DOWN', MR1, process, R1, RR1} ->
?line controlled_suicide = RR1
end,
?line receive
{R2, got_down_message, L1, RR2} ->
?line controlled_suicide = RR2
end,
%% Done.
?line stop_busy_dist_port_tracer(Tracer),
?line stop_node(Node),
ok.
dummy_waiter() ->
receive
after infinity ->
ok
end.
link_to_dead(doc) ->
["Test that linking to a dead remote process gives an EXIT message ",
"AND that the link is teared down."];
link_to_dead(Config) when is_list(Config) ->
?line process_flag(trap_exit, true),
?line {ok, Node} = start_node(link_to_dead),
% ?line monitor_node(Node, true),
?line net_adm:ping(Node), %% Ts_cross_server workaround.
?line Pid = spawn(Node, ?MODULE, dead_process, []),
receive
after 5000 -> ok
end,
?line link(Pid),
?line receive
{'EXIT', Pid, noproc} ->
ok;
Other ->
?line test_server:fail({unexpected_message, Other})
after 5000 ->
?line test_server:fail(nothing_received)
end,
?line {links, Links} = process_info(self(), links),
?line io:format("Pid=~p, links=~p", [Pid, Links]),
?line false = lists:member(Pid, Links),
?line stop_node(Node),
?line receive
Message ->
?line test_server:fail({unexpected_message, Message})
after 3000 ->
ok
end,
ok.
dead_process() ->
erlang:error(die).
link_to_dead_new_node(doc) ->
["Test that linking to a pid on node that has gone and restarted gives ",
"the correct EXIT message (OTP-2304)."];
link_to_dead_new_node(Config) when is_list(Config) ->
?line process_flag(trap_exit, true),
%% Start the node, get a Pid and stop the node again.
?line {ok, Node} = start_node(link_to_dead_new_node),
?line Pid = spawn(Node, ?MODULE, dead_process, []),
?line stop_node(Node),
%% Start a new node with the same name.
?line {ok, Node} = start_node(link_to_dead_new_node),
?line link(Pid),
?line receive
{'EXIT', Pid, noproc} ->
ok;
Other ->
?line test_server:fail({unexpected_message, Other})
after 5000 ->
?line test_server:fail(nothing_received)
end,
%% Make sure that the link wasn't created.
?line {links, Links} = process_info(self(), links),
?line io:format("Pid=~p, links=~p", [Pid, Links]),
?line false = lists:member(Pid, Links),
?line stop_node(Node),
?line receive
Message ->
?line test_server:fail({unexpected_message, Message})
after 3000 ->
ok
end,
ok.
applied_monitor_node(doc) ->
"Test that monitor_node/2 works when applied.";
applied_monitor_node(Config) when is_list(Config) ->
?line NonExisting = list_to_atom("__non_existing__@" ++ hostname()),
%% Tail-recursive call to apply (since the node is non-existing,
%% there will be a trap).
?line true = tail_apply(erlang, monitor_node, [NonExisting, true]),
?line [{nodedown, NonExisting}] = test_server:messages_get(),
%% Ordinary call (with trap).
?line true = apply(erlang, monitor_node, [NonExisting, true]),
?line [{nodedown, NonExisting}] = test_server:messages_get(),
ok.
tail_apply(M, F, A) ->
apply(M, F, A).
ref_port_roundtrip(doc) ->
"Test that sending a port or reference to another node and back again "
"doesn't correct them in any way.";
ref_port_roundtrip(Config) when is_list(Config) ->
?line process_flag(trap_exit, true),
?line Port = open_port({spawn, efile}, []),
?line Ref = make_ref(),
?line {ok, Node} = start_node(ref_port_roundtrip),
?line net_adm:ping(Node),
?line Term = {Port, Ref},
?line io:format("Term before: ~p", [show_term(Term)]),
?line Pid = spawn_link(Node, ?MODULE, roundtrip, [Term]),
?line receive after 5000 -> ok end,
?line stop_node(Node),
?line receive
{'EXIT', Pid, {Port, Ref}} ->
?line io:format("Term after: ~p", [show_term(Term)]),
ok;
Other ->
?line io:format("Term after: ~p", [show_term(Term)]),
?line test_server:fail({unexpected, Other})
after 10000 ->
?line test_server:fail(timeout)
end,
ok.
roundtrip(Term) ->
exit(Term).
nil_roundtrip(doc) ->
"Test that the smallest external term [] aka NIL can be sent to "
"another node node and back again.";
nil_roundtrip(Config) when is_list(Config) ->
?line process_flag(trap_exit, true),
?line {ok, Node} = start_node(nil_roundtrip),
?line net_adm:ping(Node),
?line Pid = spawn_link(Node, ?MODULE, bounce, [self()]),
?line Pid ! [],
?line receive
[] ->
?line receive
{'EXIT', Pid, []} ->
?line stop_node(Node),
ok
end
end.
bounce(Dest) ->
receive Msg ->
Dest ! Msg,
exit(Msg)
end.
show_term(Term) ->
binary_to_list(term_to_binary(Term)).
stop_dist(doc) ->
["Tests behaviour after net_kernel:stop (OTP-2586)."];
stop_dist(Config) when is_list(Config) ->
?line Str = os:cmd(atom_to_list(lib:progname())
++ " -noshell -pa "
++ ?config(data_dir, Config)
++ " -s run"),
%% The "true" may be followed by an error report, so ignore anything that
%% follows it.
?line "true\n"++_ = Str,
%% "May fail on FreeBSD due to differently configured name lookup - ask Arndt",
%% if you can find him.
ok.
trap_bif(doc) ->
["Verifies that BIFs which are traps to Erlang work (OTP-2680)."];
trap_bif(suite) -> [trap_bif_1, trap_bif_2, trap_bif_3].
trap_bif_1(doc) ->
[""];
trap_bif_1(Config) when is_list(Config) ->
?line {true} = tr1(),
ok.
trap_bif_2(doc) ->
[""];
trap_bif_2(Config) when is_list(Config) ->
?line {true} = tr2(),
ok.
trap_bif_3(doc) ->
[""];
trap_bif_3(Config) when is_list(Config) ->
?line {hoo} = tr3(),
ok.
tr1() ->
?line NonExisting = 'abc@boromir',
?line X = erlang:monitor_node(NonExisting, true),
{X}.
tr2() ->
?line NonExisting = 'abc@boromir',
?line X = apply(erlang, monitor_node, [NonExisting, true]),
{X}.
tr3() ->
?line NonExisting = 'abc@boromir',
?line X = {NonExisting, glirp} ! hoo,
{X}.
dist_auto_connect(doc) ->
["Tests the kernel parameter 'dist_auto_connect'."];
dist_auto_connect(suite) ->
[dist_auto_connect_never, dist_auto_connect_once].
% This has to be done by nodes with differrent cookies, otherwise global
% will connect nodes, which is correct, but makes it hard to test.
% * Start two nodes, n1 and n2. n2 with the dist_auto_connect once parameter
% * n2 pings n1 -> connection
% * check that they now know each other
% * Kill n1
% * Make sure n2 gets pang when pinging n1
% * restart n1
% * Make sure n2 *still gets pang*!
% * Ping n2 from n1 -> pong
% * n2 now also gets pong when pinging n1
% * disconnect n2 from n1
% * n2 gets pang when pinging n1
% * n2 forces connection by using net_kernel:connect_node (ovverrides)
% * n2 gets pong when pinging n1.
dist_auto_connect_once(doc) -> "Test the dist_auto_connect once kernel parameter";
dist_auto_connect_once(Config) when is_list(Config) ->
?line Sock = start_relay_node(dist_auto_connect_relay_node,[]),
?line NN = inet_rpc_nodename(Sock),
?line Sock2 = start_relay_node(dist_auto_connect_once_node,
"-kernel dist_auto_connect once"),
?line NN2 = inet_rpc_nodename(Sock2),
?line {ok,[]} = do_inet_rpc(Sock,erlang,nodes,[]),
?line {ok, pong} = do_inet_rpc(Sock2,net_adm,ping,[NN]),
?line {ok,[NN2]} = do_inet_rpc(Sock,erlang,nodes,[]),
?line {ok,[NN]} = do_inet_rpc(Sock2,erlang,nodes,[]),
?line [_,HostPartPeer] = string:tokens(atom_to_list(NN),"@"),
?line [_,MyHostPart] = string:tokens(atom_to_list(node()),"@"),
% Give net_kernel a chance to change the state of the node to up to.
?line receive after 1000 -> ok end,
case HostPartPeer of
MyHostPart ->
?line ok = stop_relay_node(Sock),
?line {ok,pang} = do_inet_rpc(Sock2,net_adm,ping,[NN]);
_ ->
?line {ok, true} = do_inet_rpc(Sock,net_kernel,disconnect,[NN2]),
receive
after 500 -> ok
end
end,
?line {ok, []} = do_inet_rpc(Sock2,erlang,nodes,[]),
Sock3 = case HostPartPeer of
MyHostPart ->
?line start_relay_node(dist_auto_connect_relay_node,[]);
_ ->
Sock
end,
?line TS1 = timestamp(),
?line {ok, pang} = do_inet_rpc(Sock2,net_adm,ping,[NN]),
?line TS2 = timestamp(),
RefT = net_kernel:connecttime() - 1000,
?line true = ((TS2 - TS1) < RefT),
?line TS3 = timestamp(),
?line {ok, true} = do_inet_rpc(Sock2,erlang,monitor_node,
[NN,true,[allow_passive_connect]]),
?line TS4 = timestamp(),
?line true = ((TS4 - TS3) > RefT),
?line {ok, pong} = do_inet_rpc(Sock3,net_adm,ping,[NN2]),
?line {ok, pong} = do_inet_rpc(Sock2,net_adm,ping,[NN]),
?line {ok, true} = do_inet_rpc(Sock3,net_kernel,disconnect,[NN2]),
receive
after 500 -> ok
end,
?line {ok, pang} = do_inet_rpc(Sock2,net_adm,ping,[NN]),
?line {ok, true} = do_inet_rpc(Sock2,net_kernel,connect_node,[NN]),
?line {ok, pong} = do_inet_rpc(Sock2,net_adm,ping,[NN]),
?line stop_relay_node(Sock3),
?line stop_relay_node(Sock2).
%% Start a relay node and a lonely (dist_auto_connect never) node.
%% Lonely node pings relay node. That should fail.
%% Lonely node connects to relay node with net_kernel:connect_node/1.
%% Result is sent here through relay node.
dist_auto_connect_never(Config) when is_list(Config) ->
Self = self(),
?line {ok, RelayNode} =
start_node(dist_auto_connect_relay),
?line spawn(RelayNode,
fun() ->
register(dist_auto_connect_relay, self()),
dist_auto_connect_relay(Self)
end),
?line {ok, Handle} = dist_auto_connect_start(dist_auto_connect, never),
?line Result =
receive
{do_dist_auto_connect, ok} ->
ok;
{do_dist_auto_connect, Error} ->
{error, Error};
Other ->
{error, Other}
after 32000 ->
timeout
end,
?line stop_node(RelayNode),
?line Stopped = dist_auto_connect_stop(Handle),
?line Junk =
receive
{do_dist_auto_connect, _} = J ->
J
after 0 ->
ok
end,
?line {ok, ok, ok} = {Result, Stopped, Junk},
ok.
do_dist_auto_connect([never]) ->
Node = list_to_atom("dist_auto_connect_relay@" ++ hostname()),
io:format("~p:do_dist_auto_connect([false]) Node=~p~n",
[?MODULE, Node]),
Ping = net_adm:ping(Node),
io:format("~p:do_dist_auto_connect([false]) Ping=~p~n",
[?MODULE, Ping]),
Result = case Ping of
pang -> ok;
_ -> {error, Ping}
end,
io:format("~p:do_dist_auto_connect([false]) Result=~p~n",
[?MODULE, Result]),
net_kernel:connect_node(Node),
catch {dist_auto_connect_relay, Node} ! {do_dist_auto_connect, Result};
% receive after 1000 -> ok end,
% halt();
do_dist_auto_connect(Arg) ->
io:format("~p:do_dist_auto_connect(~p)~n",
[?MODULE, Arg]),
receive after 10000 -> ok end,
halt().
dist_auto_connect_start(Name, Value) when is_atom(Name) ->
dist_auto_connect_start(atom_to_list(Name), Value);
dist_auto_connect_start(Name, Value) when is_list(Name), is_atom(Value) ->
Node = list_to_atom(lists:append([Name, "@", hostname()])),
ModuleDir = filename:dirname(code:which(?MODULE)),
ValueStr = atom_to_list(Value),
Cookie = atom_to_list(erlang:get_cookie()),
Cmd = lists:concat(
[%"xterm -e ",
atom_to_list(lib:progname()),
% " -noinput ",
" -detached ",
long_or_short(), " ", Name,
" -setcookie ", Cookie,
" -pa ", ModuleDir,
" -s ", atom_to_list(?MODULE),
" do_dist_auto_connect ", ValueStr,
" -kernel dist_auto_connect ", ValueStr]),
io:format("~p:dist_auto_connect_start() cmd: ~p~n", [?MODULE, Cmd]),
Port = open_port({spawn, Cmd}, [stream]),
{ok, {Port, Node}}.
dist_auto_connect_stop({Port, Node}) ->
Pid = spawn_link(fun() -> rpc:call(Node, erlang, halt, []) end),
dist_auto_connect_stop(Port, Node, Pid, 5000).
dist_auto_connect_stop(Port, _Node, Pid, N) when is_integer(N), N =< 0 ->
exit(Pid, normal),
catch erlang:port_close(Port),
Result = {error, node_not_down},
io:format("~p:dist_auto_connect_stop() ~p~n", [?MODULE, Result]),
Result;
dist_auto_connect_stop(Port, Node, Pid, N) when is_integer(N) ->
case net_adm:ping(Node) of
pong ->
receive after 100 -> ok end,
dist_auto_connect_stop(Port, Node, Pid, N-100);
pang ->
exit(Pid, normal),
catch erlang:port_close(Port),
io:format("~p:dist_auto_connect_stop() ok~n", [?MODULE]),
ok
end.
dist_auto_connect_relay(Parent) ->
receive X ->
catch Parent ! X
end,
dist_auto_connect_relay(Parent).
dist_parallel_send(doc) ->
[];
dist_parallel_send(suite) ->
[];
dist_parallel_send(Config) when is_list(Config) ->
?line {ok, RNode} = start_node(dist_parallel_receiver),
?line {ok, SNode} = start_node(dist_parallel_sender),
?line WatchDog = spawn_link(
fun () ->
TRef = erlang:start_timer((?DEFAULT_TIMETRAP
div 2),
self(),
oops),
receive
{timeout, TRef, _ } ->
spawn(SNode,
fun () ->
abort(timeout)
end),
spawn(RNode,
fun () ->
abort(timeout)
end)
%% rpc:cast(SNode, erlang, halt,
%% ["Timetrap (sender)"]),
%% rpc:cast(RNode, erlang, halt,
%% ["Timetrap (receiver)"])
end
end),
?line MkSndrs = fun (Receiver) ->
lists:map(fun (_) ->
spawn_link(SNode,
?MODULE,
dist_parallel_sender,
[self(),
Receiver,
1000])
end,
lists:seq(1, 64))
end,
?line SndrsStart = fun (Sndrs) ->
Parent = self(),
spawn_link(
SNode,
fun () ->
lists:foreach(fun (P) ->
P ! {go, Parent}
end,
Sndrs)
end)
end,
?line SndrsWait = fun (Sndrs) ->
lists:foreach(fun (P) ->
receive {P, done} -> ok end
end,
Sndrs)
end,
?line DPR = spawn_link(RNode, ?MODULE, dist_parallel_receiver, []),
?line Sndrs1 = MkSndrs(DPR),
?line SndrsStart(Sndrs1),
?line SndrsWait(Sndrs1),
?line unlink(DPR),
?line exit(DPR, bang),
?line DEPR = spawn_link(RNode, ?MODULE, dist_evil_parallel_receiver, []),
?line Sndrs2 = MkSndrs(DEPR),
?line SndrsStart(Sndrs2),
?line SndrsWait(Sndrs2),
?line unlink(DEPR),
?line exit(DEPR, bang),
?line unlink(WatchDog),
?line exit(WatchDog, bang),
?line stop_node(RNode),
?line stop_node(SNode),
?line ok.
do_dist_parallel_sender(Parent, _Receiver, 0) ->
Parent ! {self(), done};
do_dist_parallel_sender(Parent, Receiver, N) ->
Receiver ! {self(), "Some data"},
do_dist_parallel_sender(Parent, Receiver, N-1).
dist_parallel_sender(Parent, Receiver, N) ->
receive {go, Parent} -> ok end,
do_dist_parallel_sender(Parent, Receiver, N).
dist_parallel_receiver() ->
receive {_Sender, _Data} -> ok end,
dist_parallel_receiver().
dist_evil_parallel_receiver() ->
receive {Sender, _Data} -> ok end,
net_kernel:disconnect(node(Sender)),
dist_evil_parallel_receiver().
atom_roundtrip(Config) when is_list(Config) ->
?line AtomData = atom_data(),
?line verify_atom_data(AtomData),
?line {ok, Node} = start_node(Config),
?line do_atom_roundtrip(Node, AtomData),
?line stop_node(Node),
?line ok.
atom_roundtrip_r12b(Config) when is_list(Config) ->
case ?t:is_release_available("r12b") of
true ->
?line AtomData = atom_data(),
?line verify_atom_data(AtomData),
?line {ok, Node} = start_node(Config, [], "r12b"),
?line do_atom_roundtrip(Node, AtomData),
?line stop_node(Node),
?line ok;
false ->
?line {skip,"No OTP R12B available"}
end.
do_atom_roundtrip(Node, AtomData) ->
?line Parent = self(),
?line Proc = spawn_link(Node, fun () -> verify_atom_data_loop(Parent) end),
?line Proc ! {self(), AtomData},
?line receive {Proc, AD1} -> AtomData = AD1 end,
?line Proc ! {self(), AtomData},
?line receive {Proc, AD2} -> AtomData = AD2 end,
?line RevAtomData = lists:reverse(AtomData),
?line Proc ! {self(), RevAtomData},
?line receive {Proc, RAD1} -> RevAtomData = RAD1 end,
?line unlink(Proc),
?line exit(Proc, bang),
?line ok.
verify_atom_data_loop(From) ->
receive
{From, AtomData} ->
verify_atom_data(AtomData),
From ! {self(), AtomData},
verify_atom_data_loop(From)
end.
atom_data() ->
lists:map(fun (N) ->
ATxt = "a"++integer_to_list(N),
{list_to_atom(ATxt), ATxt}
end,
lists:seq(1, 2000)).
verify_atom_data(AtomData) ->
lists:foreach(fun ({Atom, AtomTxt}) ->
AtomTxt = atom_to_list(Atom)
end,
AtomData).
contended_atom_cache_entry(Config) when is_list(Config) ->
?line TestServer = self(),
?line ProcessPairs = 10,
?line Msgs = 100000,
?line {ok, SNode} = start_node(Config),
?line {ok, RNode} = start_node(Config),
?line Success = make_ref(),
?line Mstr
= spawn_link(
SNode,
fun () ->
erts_debug:set_internal_state(available_internal_state,
true),
Master = self(),
CIX = get_cix(),
TestAtoms = get_conflicting_atoms(CIX, ProcessPairs),
io:format("Testing with the following atoms all using "
"cache index ~p:~n ~p~n",
[CIX, TestAtoms]),
Ps = lists:map(
fun (A) ->
Ref = make_ref(),
R = spawn_link(
RNode,
fun () ->
Atom = receive
{Ref, txt, ATxt} ->
list_to_atom(
ATxt)
end,
receive_ref_atom(Ref,
Atom,
Msgs),
Master ! {self(), success}
end),
S = spawn_link(
SNode,
fun () ->
receive go -> ok end,
R ! {Ref,
txt,
atom_to_list(A)},
send_ref_atom(R, Ref, A, Msgs)
end),
{S, R}
end,
TestAtoms),
lists:foreach(fun ({S, _}) ->
S ! go
end,
Ps),
lists:foreach(fun ({_, R}) ->
receive {R, success} -> ok end
end,
Ps),
TestServer ! Success
end),
?line receive
Success ->
ok
end,
?line stop_node(SNode),
?line stop_node(RNode),
?line ok.
send_ref_atom(To, Ref, Atom, 0) ->
ok;
send_ref_atom(To, Ref, Atom, N) ->
To ! {Ref, Atom},
send_ref_atom(To, Ref, Atom, N-1).
receive_ref_atom(Ref, Atom, 0) ->
ok;
receive_ref_atom(Ref, Atom, N) ->
receive
{Ref, Value} ->
Atom = Value
end,
receive_ref_atom(Ref, Atom, N-1).
get_cix() ->
get_cix(1000).
get_cix(CIX) when is_integer(CIX), CIX < 0 ->
get_cix(0);
get_cix(CIX) when is_integer(CIX) ->
get_cix(CIX,
unwanted_cixs(),
erts_debug:get_internal_state(max_atom_out_cache_index)).
get_cix(CIX, Unwanted, MaxCIX) when CIX > MaxCIX ->
get_cix(0, Unwanted, MaxCIX);
get_cix(CIX, Unwanted, MaxCIX) ->
case lists:member(CIX, Unwanted) of
true -> get_cix(CIX+1, Unwanted, MaxCIX);
false -> CIX
end.
unwanted_cixs() ->
lists:map(fun (Node) ->
erts_debug:get_internal_state({atom_out_cache_index,
Node})
end,
nodes()).
get_conflicting_atoms(CIX, 0) ->
[];
get_conflicting_atoms(CIX, N) ->
{A, B, C} = now(),
Atom = list_to_atom("atom" ++ integer_to_list(A*1000000000000
+ B*1000000
+ C)),
case erts_debug:get_internal_state({atom_out_cache_index, Atom}) of
CIX ->
[Atom|get_conflicting_atoms(CIX, N-1)];
_ ->
get_conflicting_atoms(CIX, N)
end.
bad_dist_ext(doc) -> [];
bad_dist_ext(suite) ->
[bad_dist_ext_receive,
bad_dist_ext_process_info,
bad_dist_ext_control,
bad_dist_ext_connection_id].
bad_dist_ext_receive(Config) when is_list(Config) ->
?line {ok, Offender} = start_node(bad_dist_ext_receive_offender),
?line {ok, Victim} = start_node(bad_dist_ext_receive_victim),
?line start_node_monitors([Offender,Victim]),
?line Parent = self(),
?line P = spawn_link(Victim,
fun () ->
Parent ! {self(), started},
receive check_msgs -> ok end,
bad_dist_ext_check_msgs([one,
two,
three]),
Parent ! {self(), messages_checked},
receive done -> ok end
end),
?line receive {P, started} -> ok end,
?line pong = rpc:call(Victim, net_adm, ping, [Offender]),
?line verify_up(Offender, Victim),
?line true = lists:member(Offender, rpc:call(Victim, erlang, nodes, [])),
?line P ! one,
?line send_bad_msg(Offender, P),
?line P ! two,
?line verify_down(Offender, connection_closed, Victim, killed),
?line {message_queue_len, 2}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line Suspended = make_ref(),
?line S = spawn(Victim,
fun () ->
erlang:suspend_process(P),
Parent ! Suspended,
receive after infinity -> ok end
end),
?line MS = erlang:monitor(process, S),
?line receive Suspended -> ok end,
?line pong = rpc:call(Victim, net_adm, ping, [Offender]),
?line verify_up(Offender, Victim),
?line true = lists:member(Offender, rpc:call(Victim, erlang, nodes, [])),
?line send_bad_msgs(Offender, P, 5),
?line true = lists:member(Offender, rpc:call(Victim, erlang, nodes, [])),
?line P ! three,
?line send_bad_msgs(Offender, P, 5),
%% Make sure bad msgs has reached Victim
?line rpc:call(Offender, rpc, call, [Victim, erlang, node, []]),
?line verify_still_up(Offender, Victim),
?line {message_queue_len, 13}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line exit(S, bang),
?line receive {'DOWN', MS, process, S, bang} -> ok end,
?line verify_down(Offender, connection_closed, Victim, killed),
?line {message_queue_len, 3}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line P ! check_msgs,
?line receive {P, messages_checked} -> ok end,
?line {message_queue_len, 0}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line P ! done,
?line unlink(P),
?line verify_no_down(Offender, Victim),
?line stop_node(Offender),
?line stop_node(Victim).
bad_dist_ext_process_info(Config) when is_list(Config) ->
?line {ok, Offender} = start_node(bad_dist_ext_process_info_offender),
?line {ok, Victim} = start_node(bad_dist_ext_process_info_victim),
?line start_node_monitors([Offender,Victim]),
?line Parent = self(),
?line P = spawn_link(Victim,
fun () ->
Parent ! {self(), started},
receive check_msgs -> ok end,
bad_dist_ext_check_msgs([one, two]),
Parent ! {self(), messages_checked},
receive done -> ok end
end),
?line receive {P, started} -> ok end,
?line P ! one,
?line Suspended = make_ref(),
?line S = spawn(Victim,
fun () ->
erlang:suspend_process(P),
Parent ! Suspended,
receive after infinity -> ok end
end),
?line receive Suspended -> ok end,
?line pong = rpc:call(Victim, net_adm, ping, [Offender]),
?line verify_up(Offender, Victim),
?line send_bad_msgs(Offender, P, 5),
?line P ! two,
?line send_bad_msgs(Offender, P, 5),
%% Make sure bad msgs has reached Victim
?line rpc:call(Offender, rpc, call, [Victim, erlang, node, []]),
?line verify_still_up(Offender, Victim),
?line {message_queue_len, 12}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line verify_still_up(Offender, Victim),
?line [{message_queue_len, 2},
{messages, [one, two]}]
= rpc:call(Victim, erlang, process_info, [P, [message_queue_len,
messages]]),
?line verify_down(Offender, connection_closed, Victim, killed),
?line P ! check_msgs,
?line exit(S, bang),
?line receive {P, messages_checked} -> ok end,
?line {message_queue_len, 0}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line P ! done,
?line unlink(P),
?line verify_no_down(Offender, Victim),
?line stop_node(Offender),
?line stop_node(Victim).
bad_dist_ext_control(Config) when is_list(Config) ->
?line {ok, Offender} = start_node(bad_dist_ext_control_offender),
?line {ok, Victim} = start_node(bad_dist_ext_control_victim),
?line start_node_monitors([Offender,Victim]),
?line pong = rpc:call(Victim, net_adm, ping, [Offender]),
?line verify_up(Offender, Victim),
?line send_bad_dhdr(Offender, Victim),
?line verify_down(Offender, connection_closed, Victim, killed),
?line pong = rpc:call(Victim, net_adm, ping, [Offender]),
?line verify_up(Offender, Victim),
?line send_bad_ctl(Offender, Victim),
?line verify_down(Offender, connection_closed, Victim, killed),
?line verify_no_down(Offender, Victim),
?line stop_node(Offender),
?line stop_node(Victim).
bad_dist_ext_connection_id(Config) when is_list(Config) ->
?line {ok, Offender} = start_node(bad_dist_ext_receive_offender),
?line {ok, Victim} = start_node(bad_dist_ext_receive_victim),
?line start_node_monitors([Offender,Victim]),
?line Parent = self(),
?line P = spawn_link(Victim,
fun () ->
Parent ! {self(), started},
receive check_msgs -> ok end,
bad_dist_ext_check_msgs([]),
Parent ! {self(), messages_checked},
receive done -> ok end
end),
?line receive {P, started} -> ok end,
?line Suspended = make_ref(),
?line S = spawn(Victim,
fun () ->
erlang:suspend_process(P),
Parent ! Suspended,
receive after infinity -> ok end
end),
?line MS = erlang:monitor(process, S),
?line receive Suspended -> ok end,
?line pong = rpc:call(Victim, net_adm, ping, [Offender]),
?line verify_up(Offender, Victim),
?line send_bad_msg(Offender, P),
%% Make sure bad msg has reached Victim
?line rpc:call(Offender, rpc, call, [Victim, erlang, node, []]),
?line {message_queue_len, 1}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line true = rpc:call(Offender, net_kernel, disconnect, [Victim]),
?line verify_down(Offender, disconnect, Victim, connection_closed),
?line pong = rpc:call(Offender, net_adm, ping, [Victim]),
?line verify_up(Offender, Victim),
%% We have a new connection between Offender and Victim, bad message
%% should not bring it down.
?line {message_queue_len, 1}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line exit(S, bang),
?line receive {'DOWN', MS, process, S, bang} -> ok end,
%% Wait for a while (if the connection is taken down it might take a
%% while).
?line receive after 2000 -> ok end,
?line verify_still_up(Offender, Victim),
?line P ! check_msgs,
?line receive {P, messages_checked} -> ok end,
?line {message_queue_len, 0}
= rpc:call(Victim, erlang, process_info, [P, message_queue_len]),
?line verify_still_up(Offender, Victim),
?line P ! done,
?line unlink(P),
?line verify_no_down(Offender, Victim),
?line stop_node(Offender),
?line stop_node(Victim).
bad_dist_ext_check_msgs([]) ->
receive
Msg ->
exit({unexpected_message, Msg})
after 0 ->
ok
end;
bad_dist_ext_check_msgs([M|Ms]) ->
receive
Msg ->
M = Msg,
bad_dist_ext_check_msgs(Ms)
end.
-define(COOKIE, '').
-define(DOP_LINK, 1).
-define(DOP_SEND, 2).
-define(DOP_EXIT, 3).
-define(DOP_UNLINK, 4).
-define(DOP_NODE_LINK, 5).
-define(DOP_REG_SEND, 6).
-define(DOP_GROUP_LEADER, 7).
-define(DOP_EXIT2, 8).
-define(DOP_SEND_TT, 12).
-define(DOP_EXIT_TT, 13).
-define(DOP_REG_SEND_TT, 16).
-define(DOP_EXIT2_TT, 18).
-define(DOP_MONITOR_P, 19).
-define(DOP_DEMONITOR_P, 20).
-define(DOP_MONITOR_P_EXIT, 21).
dport_reg_send(Node, Name, Msg) ->
DPrt = case dport(Node) of
undefined ->
pong = net_adm:ping(Node),
dport(Node);
Prt ->
Prt
end,
port_command(DPrt, [dmsg_hdr(),
dmsg_ext({?DOP_REG_SEND,
self(),
?COOKIE,
Name}),
dmsg_ext(Msg)]).
dport_send(To, Msg) ->
Node = node(To),
DPrt = case dport(Node) of
undefined ->
pong = net_adm:ping(Node),
dport(Node);
Prt ->
Prt
end,
port_command(DPrt, [dmsg_hdr(),
dmsg_ext({?DOP_SEND,
?COOKIE,
To}),
dmsg_ext(Msg)]).
%% send_bad_msgs():
%% Send a valid distribution header and control message
%% but an invalid message. This invalid message will be
%% enqueued in the receivers message queue.
send_bad_msg(BadNode, To) ->
send_bad_msgs(BadNode, To, 1).
send_bad_msgs(BadNode, To, Repeat) when is_atom(BadNode),
is_pid(To),
is_integer(Repeat) ->
Parent = self(),
Done = make_ref(),
spawn_link(BadNode,
fun () ->
Node = node(To),
pong = net_adm:ping(Node),
DPrt = dport(Node),
DData = [dmsg_hdr(),
dmsg_ext({?DOP_SEND, ?COOKIE, To}),
dmsg_bad_atom_cache_ref()],
repeat(fun () -> port_command(DPrt, DData) end, Repeat),
Parent ! Done
end),
receive Done -> ok end.
%% send_bad_ctl():
%% Send a valid distribution header but an invalid control message.
send_bad_ctl(BadNode, ToNode) when is_atom(BadNode), is_atom(ToNode) ->
Parent = self(),
Done = make_ref(),
spawn_link(BadNode,
fun () ->
pong = net_adm:ping(ToNode),
%% We creat a valid ctl msg and replace an
%% atom with an invalid atom cache reference
<<131,Replace/binary>> = term_to_binary(replace),
Ctl = dmsg_ext({?DOP_REG_SEND,
self(),
?COOKIE,
replace}),
CtlBeginSize = size(Ctl) - size(Replace),
<<CtlBegin:CtlBeginSize/binary, Replace/binary>> = Ctl,
port_command(dport(ToNode),
[dmsg_fake_hdr2(),
CtlBegin,
dmsg_bad_atom_cache_ref(),
dmsg_ext({a, message})]),
Parent ! Done
end),
receive Done -> ok end.
%% send_bad_dhr():
%% Send an invalid distribution header
send_bad_dhdr(BadNode, ToNode) when is_atom(BadNode), is_atom(ToNode) ->
Parent = self(),
Done = make_ref(),
spawn_link(BadNode,
fun () ->
pong = net_adm:ping(ToNode),
port_command(dport(ToNode), dmsg_bad_hdr()),
Parent ! Done
end),
receive Done -> ok end.
dport(Node) when is_atom(Node) ->
case catch erts_debug:get_internal_state(available_internal_state) of
true -> true;
_ -> erts_debug:set_internal_state(available_internal_state, true)
end,
erts_debug:get_internal_state({dist_port, Node}).
dmsg_hdr() ->
[131, % Version Magic
$D, % Dist header
0]. % No atom cache referenses
dmsg_bad_hdr() ->
[131, % Version Magic
$D, % Dist header
255]. % 255 atom references
dmsg_fake_hdr1() ->
A = <<"fake header atom 1">>,
[131, % Version Magic
$D, 1, 16#8, 0, size(A), A]. % Fake header
dmsg_fake_hdr2() ->
A1 = <<"fake header atom 1">>,
A2 = <<"atom 2">>,
A3 = <<"atom 3">>,
[131, % Version Magic
$D,
3,
16#88, 16#08, % Flags
0, size(A1), A1,
1, size(A2), A2,
2, size(A3), A3].
dmsg_ext(Term) ->
<<131, Res/binary>> = term_to_binary(Term),
Res.
dmsg_bad_atom_cache_ref() ->
[$R, 137].
%%% Utilities
timestamp() ->
{A,B,C} = erlang:now(),
(C div 1000) + (B * 1000) + (A * 1000000000).
start_node(X) ->
start_node(X, [], []).
start_node(X, Y) ->
start_node(X, Y, []).
start_node(Name, Args, Rel) when is_atom(Name), is_list(Rel) ->
Pa = filename:dirname(code:which(?MODULE)),
Cookie = atom_to_list(erlang:get_cookie()),
RelArg = case Rel of
[] -> [];
_ -> [{erl,[{release,Rel}]}]
end,
test_server:start_node(Name, slave,
[{args,
Args++" -setcookie "++Cookie++" -pa "++Pa}
| RelArg]);
start_node(Config, Args, Rel) when is_list(Config), is_list(Rel) ->
Name = list_to_atom((atom_to_list(?MODULE)
++ "-"
++ atom_to_list(?config(testcase, Config))
++ "-"
++ integer_to_list(timestamp()))),
start_node(Name, Args, Rel).
stop_node(Node) ->
test_server:stop_node(Node).
freeze_node(Node, MS) ->
Own = 300,
DoingIt = make_ref(),
Freezer = self(),
spawn_link(Node,
fun () ->
erts_debug:set_internal_state(available_internal_state,
true),
dport_send(Freezer, DoingIt),
receive after Own -> ok end,
erts_debug:set_internal_state(block, MS+Own)
end),
receive DoingIt -> ok end,
receive after Own -> ok end.
inet_rpc_nodename({N,H,_Sock}) ->
list_to_atom(N++"@"++H).
do_inet_rpc({_,_,Sock},M,F,A) ->
Bin = term_to_binary({M,F,A}),
gen_tcp:send(Sock,Bin),
case gen_tcp:recv(Sock,0) of
{ok, Bin2} ->
T = binary_to_term(Bin2),
{ok,T};
Else ->
{error, Else}
end.
inet_rpc_server([Host, PortList]) ->
Port = list_to_integer(PortList),
{ok, Sock} = gen_tcp:connect(Host, Port,[binary, {packet, 4},
{active, false}]),
inet_rpc_server_loop(Sock).
inet_rpc_server_loop(Sock) ->
case gen_tcp:recv(Sock,0) of
{ok, Bin} ->
{M,F,A} = binary_to_term(Bin),
Res = (catch apply(M,F,A)),
RB = term_to_binary(Res),
gen_tcp:send(Sock,RB),
inet_rpc_server_loop(Sock);
_ ->
erlang:halt()
end.
start_relay_node(Node, Args) ->
Pa = filename:dirname(code:which(?MODULE)),
Cookie = "NOT"++atom_to_list(erlang:get_cookie()),
{ok, LSock} = gen_tcp:listen(0, [binary, {packet, 4},
{active, false}]),
{ok, Port} = inet:port(LSock),
{ok, Host} = inet:gethostname(),
RunArg = "-run " ++ atom_to_list(?MODULE) ++ " inet_rpc_server " ++
Host ++ " " ++ integer_to_list(Port),
{ok, NN} =
test_server:start_node(Node, peer,
[{args, Args ++
" -setcookie "++Cookie++" -pa "++Pa++" "++
RunArg}]),
[N,H] = string:tokens(atom_to_list(NN),"@"),
{ok, Sock} = gen_tcp:accept(LSock),
pang = net_adm:ping(NN),
{N,H,Sock}.
stop_relay_node({N,H,Sock}) ->
catch do_inet_rpc(Sock,erlang,halt,[]),
catch gen_tcp:close(Sock),
wait_dead(N,H,10).
wait_dead(N,H,0) ->
{error,{not_dead,N,H}};
wait_dead(N,H,X) ->
case erl_epmd:port_please(N,H) of
{port,_,_} ->
receive
after 1000 ->
ok
end,
wait_dead(N,H,X-1);
noport ->
ok;
Else ->
{error, {unexpected, Else}}
end.
start_node_monitors(Nodes) ->
Master = self(),
lists:foreach(fun (Node) ->
spawn(Node,
fun () ->
node_monitor(Master)
end)
end,
Nodes),
ok.
node_monitor(Master) ->
Opts = [nodedown_reason,{node_type,all}],
Nodes0 = nodes(connected),
net_kernel:monitor_nodes(true, Opts),
Nodes1 = nodes(connected),
case lists:sort(Nodes0) == lists:sort(Nodes1) of
true ->
lists:foreach(fun (Node) ->
Master ! {nodeup, node(), Node}
end,
Nodes0),
?t:format("~p ~p: ~p~n", [node(), erlang:now(), Nodes0]),
node_monitor_loop(Master);
false ->
net_kernel:monitor_nodes(false, Opts),
flush_node_changes(),
node_monitor(Master)
end.
flush_node_changes() ->
receive
{NodeChange, _Node, _InfoList} when NodeChange == nodeup;
NodeChange == nodedown ->
flush_node_changes()
after 0 ->
ok
end.
node_monitor_loop(Master) ->
receive
{nodeup, Node, InfoList} = Msg ->
Master ! {nodeup, node(), Node},
?t:format("~p ~p: ~p~n", [node(), erlang:now(), Msg]),
node_monitor_loop(Master);
{nodedown, Node, InfoList} = Msg ->
Reason = case lists:keysearch(nodedown_reason, 1, InfoList) of
{value, {nodedown_reason, R}} -> R;
_ -> undefined
end,
Master ! {nodedown, node(), Node, Reason},
?t:format("~p ~p: ~p~n", [node(), erlang:now(), Msg]),
node_monitor_loop(Master)
end.
verify_up(A, B) ->
receive {nodeup, A, B} -> ok end,
receive {nodeup, B, A} -> ok end.
verify_still_up(A, B) ->
true = lists:member(B, rpc:call(A, erlang, nodes, [connected])),
true = lists:member(A, rpc:call(B, erlang, nodes, [connected])),
verify_no_down(A, B).
verify_no_down(A, B) ->
receive
{nodedown, A, B, _} = Msg0 ->
?t:fail(Msg0)
after 0 ->
ok
end,
receive
{nodedown, B, A, _} = Msg1 ->
?t:fail(Msg1)
after 0 ->
ok
end.
verify_down(A, B) ->
receive {nodedown, A, B, _} -> ok end,
receive {nodedown, B, A, _} -> ok end.
verify_down(A, ReasonA, B, ReasonB) ->
receive
{nodedown, A, B, _} = Msg0 ->
{nodedown, A, B, ReasonA} = Msg0
end,
receive
{nodedown, B, A, _} = Msg1 ->
{nodedown, B, A, ReasonB} = Msg1
end,
ok.
hostname() ->
from($@, atom_to_list(node())).
from(H, [H | T]) -> T;
from(H, [_ | T]) -> from(H, T);
from(_, []) -> [].
fun_spawn(Fun) ->
fun_spawn(Fun, []).
fun_spawn(Fun, Args) ->
spawn_link(erlang, apply, [Fun, Args]).
long_or_short() ->
case net_kernel:longnames() of
true -> " -name ";
false -> " -sname "
end.
until(Fun) ->
case Fun() of
true ->
ok;
false ->
receive after 10 -> ok end,
until(Fun)
end.
forever(Fun) ->
Fun(),
forever(Fun).
abort(Why) ->
erts_debug:set_internal_state(available_internal_state, true),
erts_debug:set_internal_state(abort, Why).
start_busy_dist_port_tracer() ->
Tracer = spawn_link(fun () -> busy_dist_port_tracer() end),
erlang:system_monitor(Tracer, [busy_dist_port]),
Tracer.
stop_busy_dist_port_tracer(Tracer) when is_pid(Tracer) ->
unlink(Tracer),
exit(Tracer, bye);
stop_busy_dist_port_tracer(_) ->
true.
busy_dist_port_tracer() ->
receive
{monitor, _SuspendedProcess, busy_dist_port, _Port} = M ->
erlang:display(M),
busy_dist_port_tracer()
end.
repeat(_Fun, 0) ->
ok;
repeat(Fun, N) ->
Fun(),
repeat(Fun, N-1).
