%%
%% %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(port_SUITE).
%%%
%%% Author: Bjorn Gustavsson; iter_max_ports contributed by Peter Hogfeldt.
%%%
%%
%% There are a lot of things to test with open_port(Name, Settings).
%%
%% Name can be
%%
%% {spawn, Command}
%% which according to The Book and the manual page starts an
%% external program. That is not true. It might very well be
%% a linked-in program (the notion of 'linked-in driver' is
%% silly, since any driver is 'linked-in').
%% [Spawn of external program is tested.]
%%
%% Atom
%% Read all contents of Atom, or write to it.
%%
%% {fd, In, Out}
%% Open file descriptors In and Out. [Not tested]
%%
%% PortSettings can be
%%
%% {packet, N}
%% N is 1, 2 or 4.
%%
%% stream (default)
%% Without packet length.
%%
%% use_stdio (default for spawned ports)
%% The spawned process use file descriptors 0 and 1 for I/O.
%%
%% nouse_stdio [Not tested]
%% Use filedescriptors 3 and 4. This option is probably only
%% meaningful on Unix.
%%
%% in (default for Atom)
%% Input only (from Erlang's point of view).
%%
%% out
%% Output only (from Erlang's point of view).
%%
%% binary
%% The port is a binary port, i.e. messages received and sent
%% to a port are binaries.
%%
%% eof
%% Port is not closed on eof and will not send an exit signal,
%% instead it will send a {Port, eof} to the controlling process
%% (output can still be sent to the port (??)).
%%
-export([all/1, init_per_testcase/2, fin_per_testcase/2,
init_per_suite/1, end_per_suite/1,
stream/1, stream_small/1, stream_big/1,
basic_ping/1, slow_writes/1, bad_packet/1, bad_port_messages/1,
multiple_packets/1, mul_basic/1, mul_slow_writes/1,
dying_port/1, port_program_with_path/1,
open_input_file_port/1, open_output_file_port/1,
iter_max_ports/1, eof/1, input_only/1, output_only/1,
name1/1,
t_binary/1, options/1, parallell/1, t_exit/1,
env/1, bad_env/1, cd/1, exit_status/1,
tps/1, tps_16_bytes/1, tps_1K/1, line/1, stderr_to_stdout/1,
otp_3906/1, otp_4389/1, win_massive/1, win_massive_client/1,
mix_up_ports/1, otp_5112/1, otp_5119/1, otp_6224/1,
exit_status_multi_scheduling_block/1, ports/1,
spawn_driver/1,spawn_executable/1]).
-export([]).
%% Internal exports.
-export([tps/3]).
-export([otp_3906_forker/5, otp_3906_start_forker_starter/4]).
-export([env_slave_main/1]).
-include("test_server.hrl").
-include_lib("kernel/include/file.hrl").
all(suite) ->
[
otp_6224, stream, basic_ping, slow_writes, bad_packet,
bad_port_messages, options, multiple_packets, parallell,
dying_port, port_program_with_path,
open_input_file_port, open_output_file_port,
name1,
env, bad_env, cd, exit_status,
iter_max_ports, t_exit, tps, line, stderr_to_stdout,
otp_3906, otp_4389, win_massive, mix_up_ports,
otp_5112, otp_5119,
exit_status_multi_scheduling_block,
ports, spawn_driver, spawn_executable
].
-define(DEFAULT_TIMEOUT, ?t:minutes(5)).
init_per_testcase(Case, Config) ->
[{testcase, Case} |Config].
fin_per_testcase(_Case, _Config) ->
ok.
init_per_suite(Config) when is_list(Config) ->
ignore_cores:init(Config).
end_per_suite(Config) when is_list(Config) ->
ignore_cores:fini(Config).
-define(WIN_MASSIVE_PORT, 50000).
%% Tests that you can open a massive amount of ports (sockets)
%% on a Windows machine given the correct environment.
win_massive(Config) when is_list(Config) ->
case os:type() of
{win32,_} ->
do_win_massive();
_ ->
{skip,"Only on Windows."}
end.
do_win_massive() ->
?line Dog = test_server:timetrap(test_server:seconds(360)),
?line SuiteDir = filename:dirname(code:which(?MODULE)),
?line Env = " -env ERL_MAX_PORTS 8192",
?line {ok, Node} =
test_server:start_node(win_massive,
slave,
[{args, " -pa " ++ SuiteDir ++ Env}]),
?line ok = rpc:call(Node,?MODULE,win_massive_client,[3000]),
?line test_server:stop_node(Node),
?line test_server:timetrap_cancel(Dog),
ok.
win_massive_client(N) ->
{ok,P}=gen_tcp:listen(?WIN_MASSIVE_PORT,[{reuseaddr,true}]),
L = win_massive_loop(P,N),
Len = length(L),
lists:foreach(fun(E) ->
gen_tcp:close(E)
end,
L),
case Len div 2 of
N ->
ok;
_Else ->
{too_few, Len}
end.
win_massive_loop(_,0) ->
[];
win_massive_loop(P,N) ->
case (catch gen_tcp:connect("localhost",?WIN_MASSIVE_PORT,[])) of
{ok,A} ->
case (catch gen_tcp:accept(P)) of
{ok,B} ->
%erlang:display(N),
[A,B|win_massive_loop(P,N-1)];
_Else ->
[A]
end;
_Else0 ->
[]
end.
stream(suite) -> [stream_small, stream_big].
%% Test that we can send a stream of bytes and get it back.
%% We will send only a small amount of data, to avoid deadlock.
stream_small(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line stream_ping(Config, 512, "", []),
?line stream_ping(Config, 1777, "", []),
?line stream_ping(Config, 1777, "-s512", []),
?line test_server:timetrap_cancel(Dog),
ok.
%% Send big amounts of data (much bigger than the buffer size in port test).
%% This will deadlock the emulator if the spawn driver haven't proper
%% non-blocking reads and writes.
stream_big(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(180)),
case os:type() of
vxworks ->
%% Don't stress VxWorks too much
?line stream_ping(Config, 43755, "", []),
?line stream_ping(Config, 51255, "", []),
?line stream_ping(Config, 52345, " -s40000", []);
_ ->
?line stream_ping(Config, 43755, "", []),
?line stream_ping(Config, 100000, "", []),
?line stream_ping(Config, 77777, " -s40000", [])
end,
?line test_server:timetrap_cancel(Dog),
ok.
%% Sends packet with header size of 1, 2, and 4, with packets of various
%% sizes.
basic_ping(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(120)),
?line ping(Config, sizes(1), 1, "", []),
?line ping(Config, sizes(2), 2, "", []),
?line ping(Config, sizes(4), 4, "", []),
?line test_server:timetrap_cancel(Dog),
ok.
%% Let the port program insert delays between characters sent back to
%% Erlang, to test that the Erlang emulator can handle a packet coming in
%% small chunks rather than all at once.
slow_writes(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(20)),
?line ping(Config, [8], 4, "-s1", []),
?line ping(Config, [10], 2, "-s2", []),
?line test_server:timetrap_cancel(Dog),
ok.
bad_packet(doc) ->
["Test that we get {'EXIT', Port, einval} if we try to send a bigger "
"packet than the packet header allows."];
bad_packet(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line PortTest = port_test(Config),
?line process_flag(trap_exit, true),
?line bad_packet(PortTest, 1, 256),
?line bad_packet(PortTest, 1, 257),
?line bad_packet(PortTest, 2, 65536),
?line bad_packet(PortTest, 2, 65537),
?line test_server:timetrap_cancel(Dog),
ok.
bad_packet(PortTest, HeaderSize, PacketSize) ->
%% Intentionally no ?line macros.
P = open_port({spawn, PortTest}, [{packet, HeaderSize}]),
P ! {self(), {command, make_zero_packet(PacketSize)}},
receive
{'EXIT', P, einval} -> ok;
Other -> test_server:fail({unexpected_message, Other})
end.
make_zero_packet(0) -> [];
make_zero_packet(N) when N rem 2 == 0 ->
P = make_zero_packet(N div 2),
[P|P];
make_zero_packet(N) ->
P = make_zero_packet(N div 2),
[0, P|P].
%% Test sending bad messages to a port.
bad_port_messages(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line PortTest = port_test(Config),
?line process_flag(trap_exit, true),
?line bad_message(PortTest, {a,b}),
?line bad_message(PortTest, {a}),
?line bad_message(PortTest, {self(),{command,bad_command}}),
?line bad_message(PortTest, {self(),{connect,no_pid}}),
?line test_server:timetrap_cancel(Dog),
ok.
bad_message(PortTest, Message) ->
P = open_port({spawn,PortTest}, []),
P ! Message,
receive
{'EXIT',P,badsig} -> ok;
Other -> test_server:fail({unexpected_message, Other})
end.
%% Tests various options (stream and {packet, Number} are implicitly
%% tested in other test cases).
options(suite) -> [t_binary, eof, input_only, output_only].
%% Tests the 'binary' option for a port.
t_binary(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(300)),
%% Packet mode.
?line ping(Config, sizes(1), 1, "", [binary]),
?line ping(Config, sizes(2), 2, "", [binary]),
?line ping(Config, sizes(4), 4, "", [binary]),
%% Stream mode.
case os:type() of
vxworks ->
%% don't stress VxWorks too much
?line stream_ping(Config, 435, "", [binary]),
?line stream_ping(Config, 43755, "", [binary]),
?line stream_ping(Config, 50000, "", [binary]);
_ ->
?line stream_ping(Config, 435, "", [binary]),
?line stream_ping(Config, 43755, "", [binary]),
?line stream_ping(Config, 100000, "", [binary])
end,
?line test_server:timetrap_cancel(Dog),
ok.
name1(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(100)),
?line PortTest = port_test(Config),
?line Command = lists:concat([PortTest, " "]),
?line P = open_port({spawn, Command}, []),
?line register(myport, P),
?line P = whereis(myport),
Text = "hej",
?line myport ! {self(), {command, Text}},
?line receive
{P, {data, Text}} ->
ok
end,
?line myport ! {self(), close},
?line receive
{P, closed} -> ok
end,
?line undefined = whereis(myport),
?line test_server:timetrap_cancel(Dog),
ok.
%% Test that the 'eof' option works.
eof(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(100)),
?line PortTest = port_test(Config),
?line Command = lists:concat([PortTest, " -h0 -q"]),
?line P = open_port({spawn, Command}, [eof]),
?line receive
{P, eof} ->
ok
end,
?line P ! {self(), close},
?line receive
{P, closed} -> ok
end,
?line test_server:timetrap_cancel(Dog),
ok.
%% Tests that the 'in' option for a port works.
input_only(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(300)),
?line expect_input(Config, [0, 1, 10, 13, 127, 128, 255], 1, "", [in]),
?line expect_input(Config, [0, 1, 255, 2048], 2, "", [in]),
?line expect_input(Config, [0, 1, 255, 2048], 4, "", [in]),
?line expect_input(Config, [0, 1, 10, 13, 127, 128, 255],
1, "", [in, binary]),
?line test_server:timetrap_cancel(Dog),
ok.
%% Tests that the 'out' option for a port works.
output_only(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(100)),
?line Dir = ?config(priv_dir, Config),
?line Filename = filename:join(Dir, "output_only_stream"),
?line output_and_verify(Config, Filename, "-h0",
random_packet(35777, "echo")),
?line test_server:timetrap_cancel(Dog),
ok.
output_and_verify(Config, Filename, Options, Data) ->
?line PortTest = port_test(Config),
?line Command = lists:concat([PortTest, " ",
Options, " -o", Filename]),
?line Port = open_port({spawn, Command}, [out]),
?line Port ! {self(), {command, Data}},
?line Port ! {self(), close},
?line receive
{Port, closed} -> ok
end,
Wait_time = case os:type() of
vxworks -> 5000;
_ -> 500
end,
?line test_server:sleep(Wait_time),
?line {ok, Written} = file:read_file(Filename),
?line Data = binary_to_list(Written),
ok.
%% Test that receiving several packages written in the same
%% write operation works.
multiple_packets(suite) -> [mul_basic, mul_slow_writes].
%% Basic test of receiving multiple packages, written in
%% one operation by the other end.
mul_basic(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(600)),
case os:type() of
vxworks ->
%% don't stress vxworks too much
?line expect_input(Config, [0, 1, 255, 10, 13], 1, "", []),
?line expect_input(Config, [0, 10, 13, 1600, 8191, 16383], 2, "", []),
?line expect_input(Config, [10, 35000], 4, "", []);
_ ->
?line expect_input(Config, [0, 1, 255, 10, 13], 1, "", []),
?line expect_input(Config, [0, 10, 13, 1600, 32767, 65535], 2, "", []),
?line expect_input(Config, [10, 70000], 4, "", [])
end,
?line test_server:timetrap_cancel(Dog),
ok.
%% Test reading a buffer consisting of several packets, some
%% of which might be incomplete. (The port program builds
%% a buffer with several packets, but writes it in chunks with
%% delays in between.)
mul_slow_writes(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(250)),
?line expect_input(Config, [0, 20, 255, 10, 1], 1, "-s64", []),
?line test_server:timetrap_cancel(Dog),
ok.
%% Runs several port tests in parallell. Each individual test
%% finishes in about 5 seconds. Running in parallell, all tests
%% should also finish in about 5 seconds.
parallell(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(300)),
?line Testers =
[fun() -> stream_ping(Config, 1007, "-s100", []) end,
fun() -> stream_ping(Config, 10007, "-s1000", []) end,
fun() -> stream_ping(Config, 10007, "-s1000", []) end,
fun() -> expect_input(Config, [21, 22, 23, 24, 25], 1,
"-s10", [in]) end,
fun() -> ping(Config, [10], 1, "-d", []) end,
fun() -> ping(Config, [20000], 2, "-d", []) end,
fun() -> ping(Config, [101], 1, "-s10", []) end,
fun() -> ping(Config, [1001], 2, "-s100", []) end,
fun() -> ping(Config, [10001], 4, "-s1000", []) end,
fun() -> ping(Config, [501, 501], 2, "-s100", []) end,
fun() -> ping(Config, [11, 12, 13, 14, 11], 1, "-s5", []) end],
?line process_flag(trap_exit, true),
?line Pids = lists:map(fun fun_spawn/1, Testers),
?line wait_for(Pids),
?line test_server:timetrap_cancel(Dog),
ok.
wait_for([]) ->
ok;
wait_for(Pids) ->
io:format("Waiting for ~p", [Pids]),
receive
{'EXIT', Pid, normal} ->
wait_for(lists:delete(Pid, Pids));
Other ->
test_server:fail({bad_exit, Other})
end.
%% Tests starting port programs that terminate by themselves.
%% This used to cause problems on Windows.
dying_port(suite) -> [];
dying_port(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(150)),
?line process_flag(trap_exit, true),
?line P1 = make_dying_port(Config),
?line P2 = make_dying_port(Config),
?line P3 = make_dying_port(Config),
?line P4 = make_dying_port(Config),
?line P5 = make_dying_port(Config),
%% This should be big enough to be sure to block in the write.
?line Garbage = random_packet(16384),
?line P1 ! {self(), {command, Garbage}},
?line P3 ! {self(), {command, Garbage}},
?line P5 ! {self(), {command, Garbage}},
?line wait_for_port_exit(P1),
?line wait_for_port_exit(P2),
?line wait_for_port_exit(P3),
?line wait_for_port_exit(P4),
?line wait_for_port_exit(P5),
?line test_server:timetrap_cancel(Dog),
ok.
wait_for_port_exit(Port) ->
receive
{'EXIT', Port, _} ->
ok
end.
make_dying_port(Config) when is_list(Config) ->
PortTest = port_test(Config),
Command = lists:concat([PortTest, " -h0 -d -q"]),
open_port({spawn, Command}, [stream]).
%% Tests that port program with complete path (but without any
%% .exe extension) can be started, even if there is a file with
%% the same name but without the extension in the same directory.
%% (In practice, the file with the same name could be a Unix
%% executable.)
%%
%% This used to failed on Windows (the .exe extension had to be
%% explicitly given).
%%
%% This testcase works on Unix, but is not very useful.
port_program_with_path(suite) -> [];
port_program_with_path(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(100)),
?line DataDir = ?config(data_dir, Config),
?line PrivDir = ?config(priv_dir, Config),
%% Create a copy of the port test program in a directory not
%% included in PATH (i.e. in priv_dir), with the name 'my_port_test.exe'.
%% Also, place a file named 'my_port_test' in the same directory.
%% This used to confuse the CreateProcess() call in spawn driver.
%% (On Unix, there will be a single file created, which will be
%% a copy of the port program.)
?line PortTest = os:find_executable("port_test", DataDir),
io:format("os:find_executable(~p, ~p) returned ~p",
["port_test", DataDir, PortTest]),
?line {ok, PortTestPgm} = file:read_file(PortTest),
?line NewName = filename:join(PrivDir, filename:basename(PortTest)),
?line RedHerring = filename:rootname(NewName),
?line ok = file:write_file(RedHerring, "I'm just here to confuse.\n"),
?line ok = file:write_file(NewName, PortTestPgm),
?line ok = file:write_file_info(NewName, #file_info{mode=8#111}),
?line PgmWithPathAndNoExt = filename:rootname(NewName),
%% Open the port using the path to the copied port test program,
%% but without the .exe extension, and verified that it was started.
%%
%% If the bug is present the open_port call will fail with badarg.
?line Command = lists:concat([PgmWithPathAndNoExt, " -h2"]),
%% allow VxWorks time to write file
case os:type() of
vxworks -> test_server:sleep(2500);
_ -> time
end,
?line P = open_port({spawn, Command}, [{packet, 2}]),
?line Message = "echo back to me",
?line P ! {self(), {command, Message}},
?line receive
{P, {data, Message}} ->
ok
end,
?line test_server:timetrap_cancel(Dog),
ok.
%% Tests that files can be read using open_port(Filename, [in]).
%% This used to fail on Windows.
open_input_file_port(suite) -> [];
open_input_file_port(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line PrivDir = ?config(priv_dir, Config),
%% Create a file with the file driver and read it back using
%% open_port/2.
?line MyFile1 = filename:join(PrivDir, "my_input_file"),
?line FileData1 = "An input file",
?line ok = file:write_file(MyFile1, FileData1),
case os:type() of
vxworks ->
%% Can't open input file with vanilla driver on VxWorks
?line process_flag(trap_exit, true),
?line case catch open_port(MyFile1, [in]) of
{'EXIT', {badarg, _}} ->
ok
end;
_ ->
?line case open_port(MyFile1, [in]) of
InputPort when is_port(InputPort) ->
?line receive
{InputPort, {data, FileData1}} ->
ok
end
end
end,
?line test_server:timetrap_cancel(Dog),
ok.
%% Tests that files can be written using open_port(Filename, [out]).
open_output_file_port(suite) -> [];
open_output_file_port(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(100)),
?line PrivDir = ?config(priv_dir, Config),
%% Create a file with open_port/2 and read it back with
%% the file driver.
?line MyFile2 = filename:join(PrivDir, "my_output_file"),
?line FileData2_0 = "A file created ",
?line FileData2_1 = "with open_port/2.\n",
?line FileData2 = FileData2_0 ++ FileData2_1,
?line OutputPort = open_port(MyFile2, [out]),
?line OutputPort ! {self(), {command, FileData2_0}},
?line OutputPort ! {self(), {command, FileData2_1}},
?line OutputPort ! {self(), close},
?line {ok, Bin} = file:read_file(MyFile2),
?line FileData2 = binary_to_list(Bin),
?line test_server:timetrap_cancel(Dog),
ok.
%%
%% Open as many ports as possible. Do this several times and check
%% that we get the same number of ports every time.
%%
iter_max_ports(suite) -> [];
iter_max_ports(Config) when is_list(Config) ->
%% The child_setup program might dump core if we get out of memory.
%% This is hard to do anything about and is harmless. We run this test
%% in a working directory with an ignore_core_files file which will make
%% the search for core files ignore cores generated by this test.
%%
Config2 = ignore_cores:setup(?MODULE, iter_max_ports, Config, true),
try
iter_max_ports_test(Config2)
after
ignore_cores:restore(Config2)
end.
iter_max_ports_test(Config) ->
?line Dog = test_server:timetrap(test_server:minutes(20)),
?line PortTest = port_test(Config),
?line Command = lists:concat([PortTest, " -h0 -q"]),
?line Iters = case os:type() of
{win32,_} -> 4;
_ -> 10
end,
?line L = do_iter_max_ports(Iters, Command),
io:format("Result: ~p",[L]),
?line all_equal(L),
?line test_server:timetrap_cancel(Dog),
{comment, "Max ports: " ++ integer_to_list(hd(L))}.
do_iter_max_ports(N, Command) when N > 0 ->
[max_ports(Command)| do_iter_max_ports(N-1, Command)];
do_iter_max_ports(_, _) ->
[].
all_equal([E,E|T]) ->
all_equal([E|T]);
all_equal([_]) -> ok;
all_equal([]) -> ok.
max_ports(Command) ->
test_server:sleep(500),
?line Ps = open_ports({spawn, Command}, [eof]),
?line N = length(Ps),
?line close_ports(Ps),
io:format("Got ~p ports\n",[N]),
N.
close_ports([P|Ps]) ->
P ! {self(), close},
receive
{P,closed} ->
ok
end,
close_ports(Ps);
close_ports([]) ->
ok.
open_ports(Name, Settings) ->
test_server:sleep(50),
case catch open_port(Name, Settings) of
P when is_port(P) ->
[P| open_ports(Name, Settings)];
{'EXIT', {Code, _}} ->
case Code of
enfile ->
[];
emfile ->
[];
system_limit ->
[];
Other ->
?line test_server:fail({open_ports, Other})
end;
Other ->
?line test_server:fail({open_ports, Other})
end.
%% Tests that exit(Port, Term) works (has been known to crash the emulator).
t_exit(suite) -> [];
t_exit(Config) when is_list(Config) ->
?line process_flag(trap_exit, true),
?line Pid = fun_spawn(fun suicide_port/1, [Config]),
?line receive
{'EXIT', Pid, die} ->
ok;
Other ->
test_server:fail({bad_message, Other})
end.
suicide_port(Config) when is_list(Config) ->
?line Port = port_expect(Config, [], 0, "", []),
?line exit(Port, die),
?line receive after infinity -> ok end.
tps(suite) -> [tps_16_bytes, tps_1K].
tps_16_bytes(doc) -> "";
tps_16_bytes(suite) -> [];
tps_16_bytes(Config) when is_list(Config) ->
?line tps(16, Config).
tps_1K(doc) -> "";
tps_1K(suite) -> [];
tps_1K(Config) when is_list(Config) ->
?line tps(1024, Config).
tps(Size, Config) ->
?line Dog = test_server:timetrap(test_server:seconds(300)),
?line PortTest = port_test(Config),
?line Packet = list_to_binary(random_packet(Size, "e")),
?line Port = open_port({spawn, PortTest}, [binary, {packet, 2}]),
?line Transactions = 10000,
?line {Elapsed, ok} = test_server:timecall(?MODULE, tps,
[Port, Packet, Transactions]),
?line test_server:timetrap_cancel(Dog),
{comment, integer_to_list(trunc(Transactions/Elapsed+0.5)) ++ " transactions/s"}.
tps(_Port, _Packet, 0) -> ok;
tps(Port, Packet, N) ->
?line port_command(Port, Packet),
?line receive
{Port, {data, Packet}} ->
?line tps(Port, Packet, N-1);
Other ->
?line test_server:fail({bad_message, Other})
end.
%% Line I/O test
line(Config) when is_list(Config) ->
?line Siz = 110,
?line Dog = test_server:timetrap(test_server:seconds(300)),
?line Packet1 = random_packet(Siz),
?line Packet2 = random_packet(Siz div 2),
%% Test that packets are split into lines
?line port_expect(Config,[{lists:append([Packet1, io_lib:nl(), Packet2,
io_lib:nl()]),
[{eol, Packet1}, {eol, Packet2}]}],
0, "", [{line,Siz}]),
%% Test the same for binaries
?line port_expect(Config,[{lists:append([Packet1, io_lib:nl(), Packet2,
io_lib:nl()]),
[{eol, Packet1}, {eol, Packet2}]}],
0, "", [{line,Siz},binary]),
%% Test that too long lines get split
?line port_expect(Config,[{lists:append([Packet1, io_lib:nl(), Packet1,
Packet2, io_lib:nl()]),
[{eol, Packet1}, {noeol, Packet1},
{eol, Packet2}]}], 0, "", [{line,Siz}]),
%% Test that last output from closing port program gets received.
?line L1 = lists:append([Packet1, io_lib:nl(), Packet2]),
?line S1 = lists:flatten(io_lib:format("-l~w", [length(L1)])),
io:format("S1 = ~w, L1 = ~w~n", [S1,L1]),
?line port_expect(Config,[{L1,
[{eol, Packet1}, {noeol, Packet2}, eof]}], 0,
S1, [{line,Siz},eof]),
%% Test that lonely <CR> Don't get treated as newlines
?line port_expect(Config,[{lists:append([Packet1, [13], Packet2,
io_lib:nl()]),
[{noeol, Packet1}, {eol, [13 |Packet2]}]}],
0, "", [{line,Siz}]),
%% Test that packets get built up to lines (delayed output from
%% port program)
?line port_expect(Config,[{Packet2,[]},
{lists:append([Packet2, io_lib:nl(),
Packet1, io_lib:nl()]),
[{eol, lists:append(Packet2, Packet2)},
{eol, Packet1}]}], 0, "-d", [{line,Siz}]),
%% Test that we get badarg if trying both packet and line
?line bad_argument(Config, [{packet, 5}, {line, 5}]),
?line test_server:timetrap_cancel(Dog),
ok.
%%% Redirection of stderr test
stderr_to_stdout(suite) ->
[];
stderr_to_stdout(doc) ->
"Test that redirection of standard error to standard output works.";
stderr_to_stdout(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(60)),
%% See that it works
?line Packet = random_packet(10),
?line port_expect(Config,[{Packet,[Packet]}], 0, "-e -l10",
[stderr_to_stdout]),
%% ?line stream_ping(Config, 10, "-e", [stderr_to_stdout]),
%% See that it doesn't always happen (will generate garbage on stderr)
?line port_expect(Config,[{Packet,[eof]}], 0, "-e -l10", [line,eof]),
?line test_server:timetrap_cancel(Dog),
ok.
bad_argument(Config, ArgList) ->
PortTest = port_test(Config),
case catch open_port({spawn, PortTest}, ArgList) of
{'EXIT', {badarg, _}} ->
ok
end.
%% 'env' option
%% (Can perhaps be made smaller by calling the other utility functions
%% in this module.)
env(suite) ->
[];
env(doc) ->
["Test that the 'env' option works"];
env(Config) when is_list(Config) ->
case os:type() of
vxworks ->
{skipped,"Environments not implemented on VxWorks (could be...)"};
_ ->
env2(Config)
end.
env2(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(60)),
?line Priv = ?config(priv_dir, Config),
?line Temp = filename:join(Priv, "env_fun.bin"),
PluppVal = "dirty monkey",
?line env_slave(Temp, [{"plupp",PluppVal}]),
Long = "LongAndBoringEnvName",
?line os:putenv(Long, "nisse"),
?line env_slave(Temp, [{"plupp",PluppVal},
{"DIR_PLUPP","###glurfrik"}],
fun() ->
PluppVal = os:getenv("plupp"),
"###glurfrik" = os:getenv("DIR_PLUPP"),
"nisse" = os:getenv(Long)
end),
?line env_slave(Temp, [{"must_define_something","some_value"},
{"certainly_not_existing",false},
{Long,false},
{"glurf","a glorfy string"}]),
?line test_server:timetrap_cancel(Dog),
ok.
env_slave(File, Env) ->
F = fun() ->
lists:foreach(fun({Name,Val}) ->
Val = os:getenv(Name)
end, Env)
end,
env_slave(File, Env, F).
env_slave(File, Env, Body) ->
file:write_file(File, term_to_binary(Body)),
Program = atom_to_list(lib:progname()),
Dir = filename:dirname(code:which(?MODULE)),
Cmd = Program ++ " -pz " ++ Dir ++
" -noinput -run " ++ ?MODULE_STRING ++ " env_slave_main " ++
File ++ " -run erlang halt",
Port = open_port({spawn, Cmd}, [{env,Env},{line,256}]),
receive
{Port,{data,{eol,"ok"}}} ->
ok;
{Port,{data,{eol,Error}}} ->
io:format("~p\n", [Error]),
test_server:fail();
Other ->
test_server:fail(Other)
end.
env_slave_main([File]) ->
{ok,Body0} = file:read_file(File),
Body = binary_to_term(Body0),
case Body() of
{'EXIT',Reason} ->
io:format("Error: ~p\n", [Reason]);
_ ->
io:format("ok\n")
end,
init:stop().
%% 'env' option
%% Test bad environments.
bad_env(Config) when is_list(Config) ->
case os:type() of
vxworks ->
{skipped,"Environments not implemented on VxWorks"};
_ ->
bad_env_1()
end.
bad_env_1() ->
?line try_bad_env([abbb]),
?line try_bad_env([{"key","value"}|{"another","value"}]),
?line try_bad_env([{"key","value","value2"}]),
?line try_bad_env([{"key",[a,b,c]}]),
?line try_bad_env([{"key",value}]),
?line try_bad_env({a,tuple}),
?line try_bad_env(42),
?line try_bad_env([a|b]),
?line try_bad_env(self()),
ok.
try_bad_env(Env) ->
try open_port({spawn,"ls"}, [{env,Env}])
catch
error:badarg -> ok
end.
%% 'cd' option
%% (Can perhaps be made smaller by calling the other utility functions
%% in this module.)
cd(suite) ->
[];
cd(doc) ->
["Test that the 'cd' option works"];
cd(Config) when is_list(Config) ->
case os:type() of
vxworks ->
{skipped,"Task specific directories does not exist on VxWorks"};
_ ->
cd2(Config)
end.
cd2(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(60)),
?line Program = atom_to_list(lib:progname()),
?line DataDir = ?config(data_dir, Config),
?line TestDir = filename:join(DataDir, "dir"),
?line Cmd = Program ++ " -pz " ++ DataDir ++
" -noshell -s port_test pwd -s erlang halt",
?line _ = open_port({spawn, Cmd},
[{cd, TestDir},
{line, 256}]),
?line receive
{_, {data, {eol, String}}} ->
case filename_equal(String, TestDir) of
true ->
ok;
false ->
?line test_server:fail({cd, String})
end;
Other2 ->
?line test_server:fail({env, Other2})
end,
?line test_server:timetrap_cancel(Dog),
ok.
filename_equal(A, B) ->
case os:type() of
{win32, _} ->
win_filename_equal(A, B);
_ ->
A == B
end.
win_filename_equal([], []) ->
true;
win_filename_equal([], _) ->
false;
win_filename_equal(_, []) ->
false;
win_filename_equal([C1 | Rest1], [C2 | Rest2]) ->
case tolower(C1) == tolower(C2) of
true ->
win_filename_equal(Rest1, Rest2);
false ->
false
end.
tolower(C) when C >= $A, C =< $Z ->
C + 32;
tolower(C) ->
C.
otp_3906(suite) ->
[];
otp_3906(doc) ->
["Tests that child process deaths are managed correctly when there are "
" a large amount of concurrently dying children. See ticket OTP-3906."];
otp_3906(Config) when is_list(Config) ->
case os:type() of
{unix, OSName} ->
otp_3906(Config, OSName);
_ ->
{skipped, "Only run on Unix systems"}
end.
-define(OTP_3906_CHILDREN, 1000).
-define(OTP_3906_EXIT_STATUS, 17).
-define(OTP_3906_PROGNAME, "otp_3906").
-define(OTP_3906_TICK_TIMEOUT, 5000).
-define(OTP_3906_OSP_P_ERLP, 10).
-define(OTP_3906_MAX_CONC_OSP, 50).
otp_3906(Config, OSName) ->
?line TSDir = filename:dirname(code:which(test_server)),
?line {ok, Variables} = file:consult(filename:join(TSDir, "variables")),
case lists:keysearch('CC', 1, Variables) of
{value,{'CC', CC}} ->
SuiteDir = filename:dirname(code:which(?MODULE)),
PrivDir = ?config(priv_dir, Config),
Prog = otp_3906_make_prog(CC, PrivDir),
{ok, Node} = test_server:start_node(otp_3906,
slave,
[{args, " -pa " ++ SuiteDir},
{linked, false}]),
OP = process_flag(priority, max),
OTE = process_flag(trap_exit, true),
FS = spawn_link(Node,
?MODULE,
otp_3906_start_forker_starter,
[?OTP_3906_CHILDREN, [], self(), Prog]),
Result = receive
{'EXIT', _ForkerStarter, Reason} ->
{failed, Reason};
{emulator_pid, EmPid} ->
case otp_3906_wait_result(FS, 0, 0) of
{succeded,
?OTP_3906_CHILDREN,
?OTP_3906_CHILDREN} ->
succeded;
{succeded, Forked, Exited} ->
otp_3906_list_defunct(EmPid, OSName),
{failed,
{mismatch,
{forked, Forked},
{exited, Exited}}};
Res ->
otp_3906_list_defunct(EmPid, OSName),
Res
end
end,
process_flag(trap_exit, OTE),
process_flag(priority, OP),
test_server:stop_node(Node),
case Result of
succeded ->
ok;
_ ->
?line test_server:fail(Result)
end;
_ ->
{skipped, "No C compiler found"}
end.
otp_3906_list_defunct(EmPid, OSName) ->
% Guess ps switches to use and what to grep for (could be improved)
{Switches, Zombie} = case OSName of
BSD when BSD == darwin;
BSD == openbsd;
BSD == netbsd;
BSD == freebsd ->
{"-ajx", "Z"};
_ ->
{"-ef", "[dD]efunct"}
end,
test_server:format("Emulator pid: ~s~n"
"Listing of zombie processes:~n"
"~s~n",
[EmPid,
otp_3906_htmlize(os:cmd("ps "
++ Switches
++ " | grep "
++ Zombie))]).
otp_3906_htmlize([]) ->
[];
otp_3906_htmlize([C | Cs]) ->
case [C] of
"<" -> "<" ++ otp_3906_htmlize(Cs);
">" -> ">" ++ otp_3906_htmlize(Cs);
_ -> [C | otp_3906_htmlize(Cs)]
end.
otp_3906_make_prog(CC, PrivDir) ->
SrcFileName = filename:join(PrivDir, ?OTP_3906_PROGNAME ++ ".c"),
TrgtFileName = filename:join(PrivDir, ?OTP_3906_PROGNAME),
{ok, SrcFile} = file:open(SrcFileName, write),
io:format(SrcFile,
"int ~n"
"main(void) ~n"
"{ ~n"
" return ~p; ~n"
"} ~n",
[?OTP_3906_EXIT_STATUS]),
file:close(SrcFile),
os:cmd(CC ++ " " ++ SrcFileName ++ " -o " ++ TrgtFileName),
TrgtFileName.
otp_3906_wait_result(ForkerStarter, F, E) ->
receive
{'EXIT', ForkerStarter, Reason} ->
{failed, {Reason, {forked, F}, {exited, E}}};
forked ->
otp_3906_wait_result(ForkerStarter, F+1, E);
exited ->
otp_3906_wait_result(ForkerStarter, F, E+1);
tick ->
otp_3906_wait_result(ForkerStarter, F, E);
succeded ->
{succeded, F, E}
after
?OTP_3906_TICK_TIMEOUT ->
unlink(ForkerStarter),
exit(ForkerStarter, timeout),
{failed, {timeout, {forked, F}, {exited, E}}}
end.
otp_3906_collect([], _) ->
done;
otp_3906_collect(RefList, Sup) ->
otp_3906_collect(otp_3906_collect_one(RefList, Sup), Sup).
otp_3906_collect_one(RefList, Sup) ->
receive
Ref when is_reference(Ref) ->
Sup ! tick,
lists:delete(Ref, RefList)
end.
otp_3906_start_forker(N, Sup, Prog) ->
Ref = make_ref(),
spawn_opt(?MODULE,
otp_3906_forker,
[N, self(), Ref, Sup, Prog],
[link, {priority, max}]),
Ref.
otp_3906_start_forker_starter(N, RefList, Sup, Prog) ->
process_flag(priority, max),
EmPid = os:getpid(),
Sup ! {emulator_pid, EmPid},
otp_3906_forker_starter(N, RefList, Sup, Prog).
otp_3906_forker_starter(0, RefList, Sup, _) ->
otp_3906_collect(RefList, Sup),
unlink(Sup),
Sup ! succeded;
otp_3906_forker_starter(N, RefList, Sup, Prog)
when length(RefList) >= ?OTP_3906_MAX_CONC_OSP ->
otp_3906_forker_starter(N, otp_3906_collect_one(RefList, Sup), Sup, Prog);
otp_3906_forker_starter(N, RefList, Sup, Prog)
when is_integer(N), N > ?OTP_3906_OSP_P_ERLP ->
otp_3906_forker_starter(N-?OTP_3906_OSP_P_ERLP,
[otp_3906_start_forker(?OTP_3906_OSP_P_ERLP,
Sup,
Prog)|RefList],
Sup,
Prog);
otp_3906_forker_starter(N, RefList, Sup, Prog) when is_integer(N) ->
otp_3906_forker_starter(0,
[otp_3906_start_forker(N,
Sup,
Prog)|RefList],
Sup,
Prog).
otp_3906_forker(0, Parent, Ref, _, _) ->
unlink(Parent),
Parent ! Ref;
otp_3906_forker(N, Parent, Ref, Sup, Prog) ->
Port = erlang:open_port({spawn, Prog}, [exit_status, in]),
Sup ! forked,
receive
{Port, {exit_status, ?OTP_3906_EXIT_STATUS}} ->
Sup ! exited,
otp_3906_forker(N-1, Parent, Ref, Sup, Prog);
{Port, Res} ->
exit(Res);
Other ->
exit(Other)
end.
otp_4389(suite) -> [];
otp_4389(doc) -> [];
otp_4389(Config) when is_list(Config) ->
case {os:type(),erlang:system_info(heap_type)} of
{{unix, _},private} ->
?line Dog = test_server:timetrap(test_server:seconds(240)),
?line TCR = self(),
case get_true_cmd() of
True when is_list(True) ->
?line lists:foreach(
fun (P) ->
?line receive
{P, ok} -> ?line ok;
{P, Err} -> ?line ?t:fail(Err)
end
end,
lists:map(
fun(_) ->
spawn_link(
fun() ->
process_flag(trap_exit, true),
case catch open_port({spawn, True},
[stream,exit_status]) of
P when is_port(P) ->
receive
{P,{exit_status,_}} ->
TCR ! {self(),ok};
{'EXIT',_,{R2,_}} when R2 == emfile;
R2 == eagain ->
TCR ! {self(),ok};
Err2 ->
TCR ! {self(),{msg,Err2}}
end;
{'EXIT',{R1,_}} when R1 == emfile;
R1 == eagain ->
TCR ! {self(),ok};
Err1 ->
TCR ! {self(), {open_port,Err1}}
end
end)
end,
lists:duplicate(1000,[]))),
?line test_server:timetrap_cancel(Dog),
{comment,
"This test case doesn't always fail when the bug that "
"it tests for is present (it is most likely to fail on"
" a multi processor machine). If the test case fails it"
" will fail by deadlocking the emulator."};
_ ->
?line {skipped, "\"true\" command not found"}
end;
_ ->
{skip,"Only run on Unix and private heaps"}
end.
get_true_cmd() ->
DoFileExist = fun (FileName) ->
case file:read_file_info(FileName) of
{ok, _} -> throw(FileName);
_ -> not_found
end
end,
catch begin
%% First check in /usr/bin and /bin
DoFileExist("/usr/bin/true"),
DoFileExist("/bin/true"),
%% Try which
case filename:dirname(os:cmd("which true")) of
"." -> not_found;
TrueDir -> filename:join(TrueDir, "true")
end
end.
%% 'exit_status' option
exit_status(suite) ->
[];
exit_status(doc) ->
["Test that the 'exit_status' option works"];
exit_status(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(60)),
?line port_expect(Config,[{"x",
[{exit_status, 5}]}],
1, "", [exit_status]),
?line test_server:timetrap_cancel(Dog),
ok.
spawn_driver(suite) ->
[];
spawn_driver(doc) ->
["Test spawning a driver specifically"];
spawn_driver(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line Path = ?config(data_dir, Config),
?line ok = load_driver(Path, "echo_drv"),
?line Port = erlang:open_port({spawn_driver, "echo_drv"}, []),
?line Port ! {self(), {command, "Hello port!"}},
?line receive
{Port, {data, "Hello port!"}} = Msg1 ->
io:format("~p~n", [Msg1]),
ok;
Other ->
test_server:fail({unexpected, Other})
end,
?line Port ! {self(), close},
?line receive {Port, closed} -> ok end,
?line Port2 = erlang:open_port({spawn_driver, "echo_drv -Hello port?"},
[]),
?line receive
{Port2, {data, "Hello port?"}} = Msg2 ->
io:format("~p~n", [Msg2]),
ok;
Other2 ->
test_server:fail({unexpected2, Other2})
end,
?line Port2 ! {self(), close},
?line receive {Port2, closed} -> ok end,
?line {'EXIT',{badarg,_}} = (catch erlang:open_port({spawn_driver, "ls"}, [])),
?line {'EXIT',{badarg,_}} = (catch erlang:open_port({spawn_driver, "cmd"}, [])),
?line {'EXIT',{badarg,_}} = (catch erlang:open_port({spawn_driver, os:find_executable("erl")}, [])),
?line test_server:timetrap_cancel(Dog),
ok.
spawn_executable(suite) ->
[];
spawn_executable(doc) ->
["Test spawning an executable specifically"];
spawn_executable(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line DataDir = ?config(data_dir, Config),
?line EchoArgs1 = filename:join([DataDir,"echo_args"]),
?line ExactFile1 = filename:nativename(os:find_executable(EchoArgs1)),
?line [ExactFile1] = run_echo_args(DataDir,[]),
?line ["echo_args"] = run_echo_args(DataDir,["echo_args"]),
?line ["echo_arguments"] = run_echo_args(DataDir,["echo_arguments"]),
?line [ExactFile1,"hello world","dlrow olleh"] =
run_echo_args(DataDir,[ExactFile1,"hello world","dlrow olleh"]),
?line [ExactFile1] = run_echo_args(DataDir,[default]),
?line [ExactFile1,"hello world","dlrow olleh"] =
run_echo_args(DataDir,[switch_order,ExactFile1,"hello world",
"dlrow olleh"]),
?line [ExactFile1,"hello world","dlrow olleh"] =
run_echo_args(DataDir,[default,"hello world","dlrow olleh"]),
?line [ExactFile1,"hello world","dlrow olleh"] =
run_echo_args_2("\""++ExactFile1++"\" "++"\"hello world\" \"dlrow olleh\""),
?line PrivDir = ?config(priv_dir, Config),
?line SpaceDir =filename:join([PrivDir,"With Spaces"]),
?line file:make_dir(SpaceDir),
?line Executable = filename:basename(ExactFile1),
?line file:copy(ExactFile1,filename:join([SpaceDir,Executable])),
?line ExactFile2 = filename:nativename(filename:join([SpaceDir,Executable])),
?line chmodplusx(ExactFile2),
io:format("|~s|~n",[ExactFile2]),
?line [ExactFile2] = run_echo_args(SpaceDir,[]),
?line ["echo_args"] = run_echo_args(SpaceDir,["echo_args"]),
?line ["echo_arguments"] = run_echo_args(SpaceDir,["echo_arguments"]),
?line [ExactFile2,"hello world","dlrow olleh"] =
run_echo_args(SpaceDir,[ExactFile2,"hello world","dlrow olleh"]),
?line [ExactFile2] = run_echo_args(SpaceDir,[default]),
?line [ExactFile2,"hello world","dlrow olleh"] =
run_echo_args(SpaceDir,[switch_order,ExactFile2,"hello world",
"dlrow olleh"]),
?line [ExactFile2,"hello world","dlrow olleh"] =
run_echo_args(SpaceDir,[default,"hello world","dlrow olleh"]),
?line [ExactFile2,"hello world","dlrow olleh"] =
run_echo_args_2("\""++ExactFile2++"\" "++"\"hello world\" \"dlrow olleh\""),
?line ExeExt =
case string:to_lower(lists:last(string:tokens(ExactFile2,"."))) of
"exe" ->
".exe";
_ ->
""
end,
Executable2 = "spoky name"++ExeExt,
?line file:copy(ExactFile1,filename:join([SpaceDir,Executable2])),
?line ExactFile3 = filename:nativename(filename:join([SpaceDir,Executable2])),
?line chmodplusx(ExactFile3),
?line [ExactFile3] = run_echo_args(SpaceDir,Executable2,[]),
?line ["echo_args"] = run_echo_args(SpaceDir,Executable2,["echo_args"]),
?line ["echo_arguments"] = run_echo_args(SpaceDir,Executable2,["echo_arguments"]),
?line [ExactFile3,"hello world","dlrow olleh"] =
run_echo_args(SpaceDir,Executable2,[ExactFile3,"hello world","dlrow olleh"]),
?line [ExactFile3] = run_echo_args(SpaceDir,Executable2,[default]),
?line [ExactFile3,"hello world","dlrow olleh"] =
run_echo_args(SpaceDir,Executable2,
[switch_order,ExactFile3,"hello world",
"dlrow olleh"]),
?line [ExactFile3,"hello world","dlrow olleh"] =
run_echo_args(SpaceDir,Executable2,
[default,"hello world","dlrow olleh"]),
?line [ExactFile3,"hello world","dlrow olleh"] =
run_echo_args_2("\""++ExactFile3++"\" "++"\"hello world\" \"dlrow olleh\""),
?line {'EXIT',{enoent,_}} = (catch run_echo_args(SpaceDir,"fnurflmonfi",
[default,"hello world",
"dlrow olleh"])),
NonExec = "kronxfrt"++ExeExt,
?line file:write_file(filename:join([SpaceDir,NonExec]),
<<"Not an executable">>),
?line {'EXIT',{eacces,_}} = (catch run_echo_args(SpaceDir,NonExec,
[default,"hello world",
"dlrow olleh"])),
?line {'EXIT',{enoent,_}} = (catch open_port({spawn_executable,"cmd"},[])),
?line {'EXIT',{enoent,_}} = (catch open_port({spawn_executable,"sh"},[])),
case os:type() of
{win32,_} ->
test_bat_file(SpaceDir);
{unix,_} ->
test_sh_file(SpaceDir)
end,
?line test_server:timetrap_cancel(Dog),
ok.
test_bat_file(Dir) ->
FN = "tf.bat",
Full = filename:join([Dir,FN]),
D = [<<"@echo off\r\n">>,
<<"echo argv[0]:^|%0^|\r\n">>,
<<"if \"%1\" == \"\" goto done\r\n">>,
<<"echo argv[1]:^|%1^|\r\n">>,
<<"if \"%2\" == \"\" goto done\r\n">>,
<<"echo argv[2]:^|%2^|\r\n">>,
<<"if \"%3\" == \"\" goto done\r\n">>,
<<"echo argv[3]:^|%3^|\r\n">>,
<<"if \"%4\" == \"\" goto done\r\n">>,
<<"echo argv[4]:^|%4^|\r\n">>,
<<"if \"%5\" == \"\" goto done\r\n">>,
<<"echo argv[5]:^|%5^|\r\n">>,
<<"\r\n">>,
<<":done\r\n">>,
<<"\r\n">>],
?line file:write_file(Full,list_to_binary(D)),
?line EF = filename:basename(FN),
?line [DN,"hello","world"] =
run_echo_args(Dir,FN,
[default,"hello","world"]),
%% The arg0 argumant should be ignored when running batch files
?line [DN,"hello","world"] =
run_echo_args(Dir,FN,
["knaskurt","hello","world"]),
?line EF = filename:basename(DN),
ok.
test_sh_file(Dir) ->
FN = "tf.sh",
Full = filename:join([Dir,FN]),
D = [<<"#! /bin/sh\n">>,
<<"echo 'argv[0]:|'$0'|'\n">>,
<<"i=1\n">>,
<<"while [ '!' -z \"$1\" ]; do\n">>,
<<" echo 'argv['$i']:|'\"$1\"'|'\n">>,
<<" shift\n">>,
<<" i=`expr $i + 1`\n">>,
<<"done\n">>],
?line file:write_file(Full,list_to_binary(D)),
?line chmodplusx(Full),
?line [Full,"hello","world"] =
run_echo_args(Dir,FN,
[default,"hello","world"]),
?line [Full,"hello","world of spaces"] =
run_echo_args(Dir,FN,
[default,"hello","world of spaces"]),
?line file:write_file(filename:join([Dir,"testfile1"]),<<"testdata1">>),
?line file:write_file(filename:join([Dir,"testfile2"]),<<"testdata2">>),
?line Pattern = filename:join([Dir,"testfile*"]),
?line L = filelib:wildcard(Pattern),
?line 2 = length(L),
?line [Full,"hello",Pattern] =
run_echo_args(Dir,FN,
[default,"hello",Pattern]),
ok.
chmodplusx(Filename) ->
case file:read_file_info(Filename) of
{ok,FI} ->
FI2 = FI#file_info{mode = ((FI#file_info.mode) bor 8#00100)},
file:write_file_info(Filename,FI2);
_ ->
ok
end.
run_echo_args_2(FullnameAndArgs) ->
Port = open_port({spawn,FullnameAndArgs},[eof]),
Data = collect_data(Port),
Port ! {self(), close},
receive {Port, closed} -> ok end,
parse_echo_args_output(Data).
run_echo_args(Where,Args) ->
run_echo_args(Where,"echo_args",Args).
run_echo_args(Where,Prog,Args) ->
ArgvArg = case Args of
[] ->
[];
[default|T] ->
[{args,T}];
[switch_order,H|T] ->
[{args,T},{arg0,H}];
[H|T] ->
[{arg0,H},{args,T}]
end,
Command = filename:join([Where,Prog]),
Port = open_port({spawn_executable,Command},ArgvArg++[eof]),
Data = collect_data(Port),
Port ! {self(), close},
receive {Port, closed} -> ok end,
parse_echo_args_output(Data).
collect_data(Port) ->
receive
{Port, {data, Data}} ->
Data ++ collect_data(Port);
{Port, eof} ->
[]
end.
parse_echo_args_output(Data) ->
[lists:last(string:tokens(S,"|")) || S <- string:tokens(Data,"\r\n")].
mix_up_ports(suite) ->
[];
mix_up_ports(doc) ->
["Test that the emulator does not mix up ports when the port table wraps"];
mix_up_ports(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line Path = ?config(data_dir, Config),
?line ok = load_driver(Path, "echo_drv"),
?line Port = erlang:open_port({spawn, "echo_drv"}, []),
?line Port ! {self(), {command, "Hello port!"}},
?line receive
{Port, {data, "Hello port!"}} = Msg1 ->
io:format("~p~n", [Msg1]),
ok;
Other ->
test_server:fail({unexpected, Other})
end,
?line Port ! {self(), close},
?line receive {Port, closed} -> ok end,
?line loop(start, done,
fun(P) ->
?line Q =
(catch erlang:open_port({spawn, "echo_drv"}, [])),
%% ?line io:format("~p ", [Q]),
if is_port(Q) ->
Q;
true ->
io:format("~p~n", [P]),
done
end
end),
?line Port ! {self(), {command, "Hello again port!"}},
?line receive
Msg2 ->
test_server:fail({unexpected, Msg2})
after 1000 ->
ok
end,
?line test_server:timetrap_cancel(Dog),
ok.
loop(Stop, Stop, Fun) when is_function(Fun) ->
ok;
loop(Start, Stop, Fun) when is_function(Fun) ->
loop(Fun(Start), Stop, Fun).
otp_5112(suite) ->
[];
otp_5112(doc) ->
["Test that link to connected process is taken away when port calls",
"driver_exit() also when the port index has wrapped"];
otp_5112(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line Path = ?config(data_dir, Config),
?line ok = load_driver(Path, "exit_drv"),
?line Port = otp_5112_get_wrapped_port(),
?line ?t:format("Max ports: ~p~n",[max_ports()]),
?line ?t:format("Port: ~p~n",[Port]),
?line {links, Links1} = process_info(self(),links),
?line ?t:format("Links1: ~p~n",[Links1]),
?line true = lists:member(Port, Links1),
?line Port ! {self(), {command, ""}},
?line {links, Links2} = process_info(self(),links),
?line ?t:format("Links2: ~p~n",[Links2]),
?line false = lists:member(Port, Links2), %% This used to fail
?line test_server:timetrap_cancel(Dog),
ok.
otp_5112_get_wrapped_port() ->
?line P1 = erlang:open_port({spawn, "exit_drv"}, []),
?line case port_ix(P1) < max_ports() of
true ->
?line ?t:format("Need to wrap port index (~p)~n", [P1]),
?line otp_5112_wrap_port_ix([P1]),
?line P2 = erlang:open_port({spawn, "exit_drv"}, []),
?line false = port_ix(P2) < max_ports(),
?line P2;
false ->
?line ?t:format("Port index already wrapped (~p)~n", [P1]),
?line P1
end.
otp_5112_wrap_port_ix(Ports) ->
?line case (catch erlang:open_port({spawn, "exit_drv"}, [])) of
Port when is_port(Port) ->
?line otp_5112_wrap_port_ix([Port|Ports]);
_ ->
%% Port table now full; empty port table
?line lists:foreach(fun (P) -> P ! {self(), close} end,
Ports),
?line ok
end.
otp_5119(suite) ->
[];
otp_5119(doc) ->
["Test that port index is not unnecessarily wrapped"];
otp_5119(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line Path = ?config(data_dir, Config),
?line ok = load_driver(Path, "exit_drv"),
?line PI1 = port_ix(otp_5119_fill_empty_port_tab([])),
?line PI2 = port_ix(erlang:open_port({spawn, "exit_drv"}, [])),
?line {PortIx1, PortIx2}
= case PI2 > PI1 of
true ->
?line {PI1, PI2};
false ->
?line {port_ix(otp_5119_fill_empty_port_tab([PI2])),
port_ix(erlang:open_port({spawn, "exit_drv"}, []))}
end,
?line MaxPorts = max_ports(),
?line ?t:format("PortIx1 = ~p ~p~n", [PI1, PortIx1]),
?line ?t:format("PortIx2 = ~p ~p~n", [PI2, PortIx2]),
?line ?t:format("MaxPorts = ~p~n", [MaxPorts]),
?line true = PortIx2 > PortIx1,
?line true = PortIx2 =< PortIx1 + MaxPorts,
?line test_server:timetrap_cancel(Dog),
?line ok.
otp_5119_fill_empty_port_tab(Ports) ->
?line case (catch erlang:open_port({spawn, "exit_drv"}, [])) of
Port when is_port(Port) ->
?line otp_5119_fill_empty_port_tab([Port|Ports]);
_ ->
%% Port table now full; empty port table
?line lists:foreach(fun (P) -> P ! {self(), close} end,
Ports),
?line [LastPort|_] = Ports,
?line LastPort
end.
-define(DEF_MAX_PORTS, 1024).
max_ports_env() ->
?line case os:getenv("ERL_MAX_PORTS") of
EMP when is_list(EMP) ->
case catch list_to_integer(EMP) of
Int when is_integer(Int) -> ?line Int;
_ -> ?line false
end;
_ -> ?line false
end.
max_ports() ->
?line PreMaxPorts
= case max_ports_env() of
Env when is_integer(Env) -> ?line Env;
_ ->
?line case os:type() of
{unix, _} ->
?line UlimStr = string:strip(os:cmd("ulimit -n")
-- "\n"),
?line case catch list_to_integer(UlimStr) of
Ulim when is_integer(Ulim) -> ?line Ulim;
_ -> ?line ?DEF_MAX_PORTS
end;
_ -> ?line ?DEF_MAX_PORTS
end
end,
?line case PreMaxPorts > ?DEF_MAX_PORTS of
true -> ?line PreMaxPorts;
false -> ?line ?DEF_MAX_PORTS
end.
port_ix(Port) when is_port(Port) ->
?line ["#Port",_,PortIxStr] = string:tokens(erlang:port_to_list(Port),
"<.>"),
?line list_to_integer(PortIxStr).
otp_6224(doc) -> ["Check that port command failure doesn't crash the emulator"];
otp_6224(suite) -> [];
otp_6224(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(10)),
?line Path = ?config(data_dir, Config),
?line ok = load_driver(Path, "failure_drv"),
?line Go = make_ref(),
?line Failer = spawn(fun () ->
receive Go -> ok end,
?line Port = open_port({spawn, "failure_drv"},
[]),
Port ! {self(), {command, "Fail, please!"}},
otp_6224_loop()
end),
?line Mon = erlang:monitor(process, Failer),
?line Failer ! Go,
?line receive
{'DOWN', Mon, process, Failer, Reason} ->
?line case Reason of
{driver_failed, _} -> ?line ok;
driver_failed -> ?line ok;
_ -> ?line ?t:fail({unexpected_exit_reason,
Reason})
end
end,
?line test_server:timetrap_cancel(Dog),
?line ok.
otp_6224_loop() ->
receive _ -> ok after 0 -> ok end,
otp_6224_loop().
-define(EXIT_STATUS_MSB_MAX_PROCS, 64).
-define(EXIT_STATUS_MSB_MAX_PORTS, 300).
exit_status_multi_scheduling_block(doc) -> [];
exit_status_multi_scheduling_block(suite) -> [];
exit_status_multi_scheduling_block(Config) when is_list(Config) ->
?line Repeat = 3,
?line case ?t:os_type() of
{unix, _} ->
?line Dog = ?t:timetrap(test_server:minutes(2*Repeat)),
?line SleepSecs = 6,
try
lists:foreach(fun (_) ->
exit_status_msb_test(Config,
SleepSecs)
end,
lists:seq(1, Repeat))
after
%% Wait for the system to recover (regardless
%% of success or not) otherwise later testcases
%% may unnecessarily fail.
?t:timetrap_cancel(Dog),
receive after SleepSecs+500 -> ok end
end;
_ -> ?line {skip, "Not implemented for this OS"}
end.
exit_status_msb_test(Config, SleepSecs) when is_list(Config) ->
%%
%% We want to start port programs from as many schedulers as possible
%% and we want these port programs to terminate while multi-scheduling
%% is blocked.
%%
?line NoSchedsOnln = erlang:system_info(schedulers_online),
?line Parent = self(),
?line ?t:format("SleepSecs = ~p~n", [SleepSecs]),
?line PortProg = "sleep " ++ integer_to_list(SleepSecs),
?line Start = now(),
?line NoProcs = case NoSchedsOnln of
NProcs when NProcs < ?EXIT_STATUS_MSB_MAX_PROCS ->
NProcs;
_ ->
?EXIT_STATUS_MSB_MAX_PROCS
end,
?line NoPortsPerProc = case 20*NoProcs of
TNPorts when TNPorts < ?EXIT_STATUS_MSB_MAX_PORTS -> 20;
_ -> ?EXIT_STATUS_MSB_MAX_PORTS div NoProcs
end,
?line ?t:format("NoProcs = ~p~nNoPortsPerProc = ~p~n",
[NoProcs, NoPortsPerProc]),
ProcFun
= fun () ->
PrtSIds = lists:map(
fun (_) ->
erlang:yield(),
case catch open_port({spawn, PortProg},
[exit_status]) of
Prt when is_port(Prt) ->
{Prt,
erlang:system_info(scheduler_id)};
{'EXIT', {Err, _}} when Err == eagain;
Err == emfile ->
noop;
{'EXIT', Err} when Err == eagain;
Err == emfile ->
noop;
Error ->
?t:fail(Error)
end
end,
lists:seq(1, NoPortsPerProc)),
SIds = lists:filter(fun (noop) -> false;
(_) -> true
end,
lists:map(fun (noop) -> noop;
({_, SId}) -> SId
end,
PrtSIds)),
process_flag(scheduler, 0),
Parent ! {self(), started, SIds},
lists:foreach(
fun (noop) ->
noop;
({Port, _}) ->
receive
{Port, {exit_status, 0}} ->
ok;
{Port, {exit_status, Status}} when Status > 128 ->
%% Sometimes happens when we have created
%% too many ports.
ok;
{Port, {exit_status, _}} = ESMsg ->
{Port, {exit_status, 0}} = ESMsg
end
end,
PrtSIds),
Parent ! {self(), done}
end,
?line Procs = lists:map(fun (N) ->
spawn_opt(ProcFun,
[link,
{scheduler,
(N rem NoSchedsOnln)+1}])
end,
lists:seq(1, NoProcs)),
?line SIds = lists:map(fun (P) ->
receive {P, started, SIds} -> SIds end
end,
Procs),
?line StartedTime = timer:now_diff(now(), Start)/1000000,
?line ?t:format("StartedTime = ~p~n", [StartedTime]),
?line true = StartedTime < SleepSecs,
?line erlang:system_flag(multi_scheduling, block),
?line lists:foreach(fun (P) -> receive {P, done} -> ok end end, Procs),
?line DoneTime = timer:now_diff(now(), Start)/1000000,
?line ?t:format("DoneTime = ~p~n", [DoneTime]),
?line true = DoneTime > SleepSecs,
?line ok = verify_multi_scheduling_blocked(),
?line erlang:system_flag(multi_scheduling, unblock),
?line case {length(lists:usort(lists:flatten(SIds))), NoSchedsOnln} of
{N, N} ->
?line ok;
{N, M} ->
?line ?t:fail("Failed to create ports on all"
++ integer_to_list(M) ++ " available"
"schedulers. Only created ports on "
++ integer_to_list(N) ++ " schedulers.")
end.
save_sid(SIds) ->
SId = erlang:system_info(scheduler_id),
case lists:member(SId, SIds) of
true -> SIds;
false -> [SId|SIds]
end.
sid_proc(SIds) ->
NewSIds = save_sid(SIds),
receive
{From, want_sids} ->
From ! {self(), sids, NewSIds}
after 0 ->
sid_proc(NewSIds)
end.
verify_multi_scheduling_blocked() ->
?line Procs = lists:map(fun (_) ->
spawn_link(fun () -> sid_proc([]) end)
end,
lists:seq(1, 3*erlang:system_info(schedulers_online))),
?line receive after 1000 -> ok end,
?line SIds = lists:map(fun (P) ->
P ! {self(), want_sids},
receive {P, sids, PSIds} -> PSIds end
end,
Procs),
?line 1 = length(lists:usort(lists:flatten(SIds))),
?line ok.
%%% Pinging functions.
stream_ping(Config, Size, CmdLine, Options) ->
Data = random_packet(Size),
port_expect(Config, [{Data, [Data]}], 0, CmdLine, Options).
ping(Config, Sizes, HSize, CmdLine, Options) ->
Actions = lists:map(fun(Size) ->
[$p|Packet] = random_packet(Size, "ping"),
{[$p|Packet], [[$P|Packet]]}
end,
Sizes),
port_expect(Config, Actions, HSize, CmdLine, Options).
%% expect_input(Sizes, HSize, CmdLine, Options)
%%
%% Sizes = Size of packets to generated.
%% HSize = Header size: 1, 2, or 4
%% CmdLine = Additional command line options.
%% Options = Addtional port options.
expect_input(Config, Sizes, HSize, CmdLine, Options) ->
expect_input1(Config, Sizes, {HSize, CmdLine, Options}, [], []).
expect_input1(Config, [0|Rest], Params, Expect, ReplyCommand) ->
expect_input1(Config, Rest, Params, [""|Expect], ["x0"|ReplyCommand]);
expect_input1(Config, [Size|Rest], Params, Expect, ReplyCommand) ->
Packet = random_packet(Size),
Fmt = io_lib:format("~c~p", [hd(Packet), Size]),
expect_input1(Config, Rest, Params, [Packet|Expect], [Fmt|ReplyCommand]);
expect_input1(Config, [], {HSize, CmdLine0, Options}, Expect, ReplyCommand) ->
CmdLine = build_cmd_line(CmdLine0, ReplyCommand, []),
port_expect(Config, [{false, lists:reverse(Expect)}],
HSize, CmdLine, Options).
build_cmd_line(FixedCmdLine, [Cmd|Rest], []) ->
build_cmd_line(FixedCmdLine, Rest, [Cmd]);
build_cmd_line(FixedCmdLine, [Cmd|Rest], Result) ->
build_cmd_line(FixedCmdLine, Rest, [Cmd, $:|Result]);
build_cmd_line(FixedCmdLine, [], Result) ->
lists:flatten([FixedCmdLine, " -r", Result, " -n"]).
%% port_expect(Actions, HSize, CmdLine, Options)
%%
%% Actions = [{Send, ExpectList}|Rest]
%% HSize = 0 (stream), or 1, 2, 4 (header size aka "packet bytes")
%% CmdLine = Command line for port_test. Don't include -h<digit>.
%% Options = Options for open_port/2. Don't include {packet, Number} or
%% or stream.
%%
%% Send = false | list()
%% ExpectList = List of lists or binaries.
%%
%% Returns the port.
port_expect(Config, Actions, HSize, CmdLine, Options0) ->
% io:format("port_expect(~p, ~p, ~p, ~p)",
% [Actions, HSize, CmdLine, Options0]),
?line PortTest = port_test(Config),
?line Cmd = lists:concat([PortTest, " -h", HSize, " ", CmdLine]),
?line PortType =
case HSize of
0 -> stream;
_ -> {packet, HSize}
end,
?line Options = [PortType|Options0],
?line io:format("open_port({spawn, ~p}, ~p)", [Cmd, Options]),
?line Port = open_port({spawn, Cmd}, Options),
?line port_expect(Port, Actions, Options),
Port.
port_expect(Port, [{Send, Expects}|Rest], Options) when is_list(Expects) ->
?line port_send(Port, Send),
?line IsBinaryPort = lists:member(binary, Options),
?line Receiver =
case {lists:member(stream, Options), line_option(Options)} of
{false, _} -> fun receive_all/2;
{true,false} -> fun stream_receive_all/2;
{_, true} -> fun receive_all/2
end,
?line Receiver(Port, maybe_to_binary(Expects, IsBinaryPort)),
?line port_expect(Port, Rest, Options);
port_expect(_, [], _) ->
ok.
%%% Check for either line or {line,N} in option list
line_option([{line,_}|_]) ->
true;
line_option([line|_]) ->
true;
line_option([_|T]) ->
line_option(T);
line_option([]) ->
false.
any_list_to_binary({Atom, List}) ->
{Atom, list_to_binary(List)};
any_list_to_binary(List) ->
list_to_binary(List).
maybe_to_binary(Expects, true) ->
lists:map(fun any_list_to_binary/1, Expects);
maybe_to_binary(Expects, false) ->
Expects.
port_send(_Port, false) -> ok;
port_send(Port, Send) when is_list(Send) ->
% io:format("port_send(~p, ~p)", [Port, Send]),
Port ! {self(), {command, Send}}.
receive_all(Port, [Expect|Rest]) ->
% io:format("receive_all(~p, [~p|Rest])", [Port, Expect]),
receive
{Port, {data, Expect}} ->
io:format("Received ~s", [format(Expect)]),
ok;
{Port, {data, Other}} ->
io:format("Received ~s; expected ~s",
[format(Other), format(Expect)]),
test_server:fail(bad_message);
Other ->
%% (We're not yet prepared for receiving both 'eol' and
%% 'exit_status'; remember that they may appear in any order.)
case {Expect, Rest, Other} of
{eof, [], {Port, eof}} ->
io:format("Received soft EOF.",[]),
ok;
{{exit_status, S}, [], {Port, {exit_status, S}}} ->
io:format("Received exit status ~p.",[S]),
ok;
_ ->
%%% io:format("Unexpected message: ~s", [format(Other)]),
io:format("Unexpected message: ~w", [Other]),
?line test_server:fail(unexpected_message)
end
end,
receive_all(Port, Rest);
receive_all(_Port, []) ->
ok.
stream_receive_all(Port, [Expect]) ->
stream_receive_all1(Port, Expect).
stream_receive_all1(_Port, Empty) when is_binary(Empty), size(Empty) == 0 ->
ok;
stream_receive_all1(_Port, []) ->
ok;
stream_receive_all1(Port, Expect) ->
receive
{Port, {data, Data}} ->
Remaining = compare(Data, Expect),
stream_receive_all1(Port, Remaining);
Other ->
test_server:fail({bad_message, Other})
end.
compare(B1, B2) when is_binary(B1), is_binary(B2), byte_size(B1) =< byte_size(B2) ->
case split_binary(B2, size(B1)) of
{B1,Remaining} ->
Remaining;
_Other ->
test_server:fail(nomatch)
end;
compare(B1, B2) when is_binary(B1), is_binary(B2) ->
test_server:fail(too_much_data);
compare([X|Rest1], [X|Rest2]) ->
compare(Rest1, Rest2);
compare([_|_], [_|_]) ->
test_server:fail(nomatch);
compare([], Remaining) ->
Remaining;
compare(_Data, []) ->
test_server:fail(too_much_data).
maybe_to_list(Bin) when is_binary(Bin) ->
binary_to_list(Bin);
maybe_to_list(List) ->
List.
format({Eol,List}) ->
io_lib:format("tuple<~w,~s>",[Eol, maybe_to_list(List)]);
format(List) when is_list(List) ->
case list_at_least(50, List) of
true ->
io_lib:format("\"~-50s...\"", [List]);
false ->
io_lib:format("~p", [List])
end;
format(Bin) when is_binary(Bin), size(Bin) >= 50 ->
io_lib:format("binary<~-50s...>", [binary_to_list(Bin, 1, 50)]);
format(Bin) when is_binary(Bin) ->
io_lib:format("binary<~s>", [binary_to_list(Bin)]).
list_at_least(Number, [_|Rest]) when Number > 0 ->
list_at_least(Number-1, Rest);
list_at_least(Number, []) when Number > 0 ->
false;
list_at_least(0, _List) -> true.
%%% Utility functions.
random_packet(Size) ->
random_packet(Size, "").
random_packet(Size, Prefix) ->
build_packet(Size-length(Prefix), lists:reverse(Prefix), random_char()).
build_packet(0, Result, _NextChar) ->
lists:reverse(Result);
build_packet(Left, Result, NextChar0) ->
NextChar =
if
NextChar0 >= 126 ->
33;
true ->
NextChar0+1
end,
build_packet(Left-1, [NextChar0|Result], NextChar).
sizes() ->
case os:type() of
vxworks ->
% don't stress VxWorks too much
[10, 13, 64, 127, 128, 255, 256, 1023, 1024,
8191, 8192, 16383, 16384];
_ ->
[10, 13, 64, 127, 128, 255, 256, 1023, 1024,
32767, 32768, 65535, 65536]
end.
sizes(Header_Size) ->
sizes(Header_Size, sizes(), []).
sizes(1, [Packet_Size|Rest], Result) when Packet_Size < 256 ->
sizes(1, Rest, [Packet_Size|Result]);
sizes(2, [Packet_Size|Rest], Result) when Packet_Size < 65536 ->
sizes(2, Rest, [Packet_Size|Result]);
sizes(4, [Packet_Size|Rest], Result) ->
sizes(4, Rest, [Packet_Size|Result]);
sizes(_, _, Result) ->
Result.
random_char() ->
random_char("abcdefghijklmnopqrstuvxyzABCDEFGHIJKLMNOPQRSTUVXYZ0123456789").
random_char(Chars) ->
lists:nth(uniform(length(Chars)), Chars).
uniform(N) ->
case get(random_seed) of
undefined ->
{X, Y, Z} = Seed = time(),
io:format("Random seed = ~p\n",[Seed]),
random:seed(X, Y, Z);
_ ->
ok
end,
random:uniform(N).
fun_spawn(Fun) ->
fun_spawn(Fun, []).
fun_spawn(Fun, Args) ->
spawn_link(erlang, apply, [Fun, Args]).
port_test(Config) when is_list(Config) ->
?line filename:join(?config(data_dir, Config), "port_test").
ports(doc) -> "Test that erlang:ports/0 returns a consistent snapshot of ports";
ports(suite) -> [];
ports(Config) when is_list(Config) ->
?line Path = ?config(data_dir, Config),
?line ok = load_driver(Path, "exit_drv"),
receive after 1000 -> ok end, % Wait for other ports to stabilize
?line OtherPorts = erlang:ports(),
io:format("Other ports: ~p\n",[OtherPorts]),
MaxPorts = 1024 - length(OtherPorts),
TrafficPid = spawn_link(fun() -> ports_traffic(MaxPorts) end),
ports_snapshots(100, TrafficPid, OtherPorts),
TrafficPid ! {self(),die},
?line receive {TrafficPid, dead} -> ok end,
ok.
ports_snapshots(0, _, _) ->
ok;
ports_snapshots(Iter, TrafficPid, OtherPorts) ->
TrafficPid ! start,
?line receive after 1 -> ok end,
Snapshot = erlang:ports(),
TrafficPid ! {self(), stop},
?line receive {TrafficPid, EventList, TrafficPorts} -> ok end,
%%io:format("Snapshot=~p\n", [Snapshot]),
ports_verify(Snapshot, OtherPorts ++ TrafficPorts, EventList),
ports_snapshots(Iter-1, TrafficPid, OtherPorts).
ports_traffic(MaxPorts) ->
ports_traffic_stopped(MaxPorts, {[],0}).
ports_traffic_stopped(MaxPorts, {PortList, PortCnt}) ->
receive
start ->
%%io:format("Traffic started in ~p\n",[self()]),
ports_traffic_started(MaxPorts, {PortList, PortCnt}, []);
{Pid,die} ->
?line lists:foreach(fun(Port)-> erlang:port_close(Port) end,
PortList),
Pid ! {self(),dead}
end.
ports_traffic_started(MaxPorts, {PortList, PortCnt}, EventList) ->
receive
{Pid, stop} ->
%%io:format("Traffic stopped in ~p\n",[self()]),
Pid ! {self(), EventList, PortList},
ports_traffic_stopped(MaxPorts, {PortList, PortCnt})
after 0 ->
ports_traffic_do(MaxPorts, {PortList, PortCnt}, EventList)
end.
ports_traffic_do(MaxPorts, {PortList, PortCnt}, EventList) ->
N = uniform(MaxPorts),
case N > PortCnt of
true -> % Open port
?line P = open_port({spawn, "exit_drv"}, []),
%%io:format("Created port ~p\n",[P]),
ports_traffic_started(MaxPorts, {[P|PortList], PortCnt+1},
[{open,P}|EventList]);
false -> % Close port
?line P = lists:nth(N, PortList),
%%io:format("Close port ~p\n",[P]),
?line true = erlang:port_close(P),
ports_traffic_started(MaxPorts, {lists:delete(P,PortList), PortCnt-1},
[{close,P}|EventList])
end.
ports_verify(Ports, PortsAfter, EventList) ->
%%io:format("Candidate=~p\nEvents=~p\n", [PortsAfter, EventList]),
case lists:sort(Ports) =:= lists:sort(PortsAfter) of
true ->
io:format("Snapshot of ~p ports verified ok.\n",[length(Ports)]),
ok;
false ->
%% Note that we track the event list "backwards", undoing open/close:
case EventList of
[{open,P} | Tail] ->
ports_verify(Ports, lists:delete(P,PortsAfter), Tail);
[{close,P} | Tail] ->
ports_verify(Ports, [P | PortsAfter], Tail);
[] ->
?line test_server:fail("Inconsistent snapshot from erlang:ports()")
end
end.
load_driver(Dir, Driver) ->
case erl_ddll:load_driver(Dir, Driver) of
ok -> ok;
{error, Error} = Res ->
io:format("~s\n", [erl_ddll:format_error(Error)]),
Res
end.
