%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2004-2010. 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(jinterface_SUITE).
-export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
init_per_suite/1, end_per_suite/1,
init_per_testcase/2, end_per_testcase/2]).
-export([nodename/1, register_and_whereis/1, get_names/1, boolean_atom/1,
node_ping/1, mbox_ping/1,
java_erlang_send_receive/1,
java_internal_send_receive_same_node/1,
java_internal_send_receive_different_nodes/1,
java_internal_send_receive_self/1,
java_link_and_exit/1, erl_link_and_exit/1,
erl_link_java_exit/1, java_link_erl_exit/1,
internal_link_linking_exits/1, internal_link_linked_exits/1,
internal_unlink_linking_exits/1, internal_unlink_linked_exits/1,
normal_exit/1, kill_mbox/1,kill_erl_proc_from_java/1,
kill_mbox_from_erlang/1,
erl_exit_with_reason_any_term/1,
java_exit_with_reason_any_term/1,
status_handler_localStatus/1, status_handler_remoteStatus/1,
status_handler_connAttempt/1]).
-include_lib("common_test/include/ct.hrl").
-include("test_server_line.hrl").
-define(debug,true).
-ifdef(debug).
-define(dbg(Str,Args), io:format(Str,Args)).
-else.
-define(dbg(Str,Args), ok).
-endif.
-define(link_test_reason,link_test_reason).
%% Test cases in MboxSendReceive.java
-define(java_erlang_send_receive,1).
-define(java_internal_send_receive_same_node,2).
-define(java_internal_send_receive_different_nodes,3).
-define(java_internal_send_receive_self,4).
%% Test cases in MboxLinkUnlink.java
-define(java_link_and_exit, 1).
-define(erl_link_and_exit, 2).
-define(erl_link_java_exit, 3).
-define(java_link_erl_exit, 4).
-define(internal_link_linking_exits, 5).
-define(internal_link_linked_exits, 6).
-define(internal_unlink_linking_exits,7).
-define(internal_unlink_linked_exits,8).
-define(normal_exit,9).
-define(kill_mbox,10).
-define(kill_erl_proc_from_java,11).
-define(kill_mbox_from_erlang,12).
-define(erl_exit_with_reason_any_term,13).
-define(java_exit_with_reason_any_term,14).
%% Test cases in NodeStatusHandler.java
-define(status_handler_localStatus,1).
-define(status_handler_remoteStatus,2).
-define(status_handler_connAttempt,3).
%%%-----------------------------------------------------------------
%%% INIT/END
%%%-----------------------------------------------------------------
suite() -> [{suite_callbacks,[ts_install_scb]}].
all() ->
lists:append([fundamental(), ping(), send_receive(),
link_unlink(), status_handler()]).
groups() ->
[].
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
fundamental() ->
[
nodename, % Nodename.java
register_and_whereis, % RegisterAndWhereis.java
get_names, % GetNames.java
boolean_atom % BooleanAtom.java
].
ping() ->
[
%% Implemented in NodePing.java
node_ping,
%% Implemented in MboxPing.java
mbox_ping
].
send_receive() ->
[
%% Implemented in MboxSendReceive.java
java_erlang_send_receive,
java_internal_send_receive_same_node,
java_internal_send_receive_different_nodes,
java_internal_send_receive_self
].
%% Note:
%%
%% The test cases in MboxLinkUnlink.java and in
%% NodePing.java, all uses default cookie, and if there
%% is a problem with having the same default cookie in
%% erlang vs jinterface, e.g because the home directory
%% does not get the same in some cases on Windows
%% - they will all fail.
link_unlink() ->
[
%% Implemented in MboxLinkUnlink.java
java_link_and_exit,
erl_link_and_exit,
erl_link_java_exit,
java_link_erl_exit,
internal_link_linking_exits,
internal_link_linked_exits,
internal_unlink_linking_exits,
internal_unlink_linked_exits,
normal_exit,
kill_mbox,
kill_erl_proc_from_java,
kill_mbox_from_erlang,
erl_exit_with_reason_any_term,
java_exit_with_reason_any_term
].
status_handler() ->
[
%% Implemented in NodeStatusHandler.java
status_handler_localStatus,
status_handler_remoteStatus,
status_handler_connAttempt
].
init_per_suite(Config) when is_list(Config) ->
case case code:priv_dir(jinterface) of
{error,bad_name} -> false;
P -> filelib:is_dir(P) end of
true ->
jitu:init_all(Config);
false ->
{skip,"No jinterface application"}
end.
end_per_suite(Config) when is_list(Config) ->
jitu:finish_all(Config).
init_per_testcase(Case, _Config)
when Case =:= kill_mbox;
Case =:= kill_mbox_from_erlang ->
{skip, "Not yet implemented"};
init_per_testcase(_Case,Config) ->
Dog = ?t:timetrap({seconds,10}),
[{watch_dog,Dog}|Config].
end_per_testcase(_Case,Config) ->
?t:timetrap_cancel(?config(watch_dog,Config)),
ok.
%%%-----------------------------------------------------------------
%%% TEST CASES
%%%-----------------------------------------------------------------
nodename(doc) ->
["Nodename.java: "
"Test OtpNode.node(), OtpNode.alive() and OtpNode.host()"];
nodename(suite) ->
[];
nodename(Config) when is_list(Config) ->
[_,Host] = string:tokens(atom_to_list(node()),"@"),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"Nodename",
[list_to_atom(Host)]).
%%%-----------------------------------------------------------------
register_and_whereis(doc) ->
["RegisterAndWhereis.java: "
"Test OtpNode.registerName(...), OtpMbox.registerName(...) and "
"OtpNode.whereis(...)"];
register_and_whereis(suite) ->
[];
register_and_whereis(Config) when is_list(Config) ->
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"RegisterAndWhereis",
[]).
%%%-----------------------------------------------------------------
get_names(doc) ->
["GetNames.java: "
"Test OtpNode.getNames()"];
get_names(suite) ->
[];
get_names(Config) when is_list(Config) ->
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"GetNames",
[]).
%%%-----------------------------------------------------------------
boolean_atom(doc) ->
["BooleanAtom.java: "
"Test OtpErlangAtom.booleanValue()"];
boolean_atom(suite) ->
[];
boolean_atom(Config) when is_list(Config) ->
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"BooleanAtom",
[]).
%%%-----------------------------------------------------------------
node_ping(doc) ->
["NodePing.java: "
"Test OtpNode.ping(java.lang.String node, long timeout)"];
node_ping(suite) ->
[];
node_ping(Config) when is_list(Config) ->
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"NodePing",
[erlang:get_cookie(),node()]).
%%%-----------------------------------------------------------------
mbox_ping(doc) ->
["MboxPing.java: "
"Test OtpNode.createMbox(...) and OtpMbox.ping(...)"];
mbox_ping(suite) ->
[];
mbox_ping(Config) when is_list(Config) ->
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"MboxPing",
[erlang:get_cookie(),node()]).
%%%-----------------------------------------------------------------
java_erlang_send_receive(doc) ->
["Test sending/receiving of erlang messages between erlang and java"];
java_erlang_send_receive(suite) ->
[];
java_erlang_send_receive(Config) when is_list(Config) ->
send_receive(?java_erlang_send_receive, fun echo_loop/0, Config).
echo_loop() ->
receive
{From,Msg} ->
?dbg("erl_send_receive_server received ~p",[{From,Msg}]),
?dbg("erl_send_receive_server sending ~p",[Msg]),
From ! Msg,
echo_loop();
done ->
ok
end.
%%%-----------------------------------------------------------------
java_internal_send_receive_same_node(doc) ->
["MboxSendReceive.java: "
"Test sending/receiving of erlang messages between mboxes "
"on the same java node."];
java_internal_send_receive_same_node(suite) ->
[];
java_internal_send_receive_same_node(Config) when is_list(Config) ->
send_receive(?java_internal_send_receive_same_node,
fun() -> receive done -> ok end end,
Config).
%%%-----------------------------------------------------------------
java_internal_send_receive_different_nodes(doc) ->
["MboxSendReceive.java: "
"Test sending/receiving of erlang messages between mboxes "
"on different java nodes."];
java_internal_send_receive_different_nodes(suite) ->
[];
java_internal_send_receive_different_nodes(Config) when is_list(Config) ->
send_receive(?java_internal_send_receive_different_nodes,
fun() -> receive done -> ok end end,
Config).
%%%-----------------------------------------------------------------
java_internal_send_receive_self(doc) ->
["MboxSendReceive.java: "
"Test sending/receiving of erlang messages from an mbox to itself"];
java_internal_send_receive_self(suite) ->
[];
java_internal_send_receive_self(Config) when is_list(Config) ->
send_receive(?java_internal_send_receive_self,
fun() -> receive done -> ok end end,
Config).
%%%-----------------------------------------------------------------
java_link_and_exit(doc) ->
["MboxLinkUnlink.java: "
"Test link between erlang process and java mailbox."
"Java mailbox links and exits"];
java_link_and_exit(suite) ->
[];
java_link_and_exit(Config) when is_list(Config) ->
LinkFun =
fun(Mbox) ->
Mbox ! {?java_link_and_exit,self(),?link_test_reason},
receive after infinity -> ok end
end,
erl_java_link(LinkFun,java_link_and_exit,Config).
%%%-----------------------------------------------------------------
erl_link_and_exit(doc) ->
["MboxLinkUnlink.java: "
"Test link between erlang process and java mailbox."
"Erlang process links and exits"];
erl_link_and_exit(suite) ->
[];
erl_link_and_exit(Config) when is_list(Config) ->
LinkFun = fun(Mbox) ->
link(Mbox),
Mbox ! {?erl_link_and_exit,self(),?link_test_reason},
receive ok -> ok end,
exit(?link_test_reason)
end,
erl_java_link(LinkFun,erl_link_and_exit,Config).
%%%-----------------------------------------------------------------
erl_link_java_exit(doc) ->
["MboxLinkUnlink.java: "
"Test link between erlang process and java mailbox."
"Erlang process links and java mailbox exits"];
erl_link_java_exit(suite) ->
[];
erl_link_java_exit(Config) when is_list(Config) ->
LinkFun = fun(Mbox) ->
link(Mbox),
Mbox ! {?erl_link_java_exit,self(),?link_test_reason},
receive after infinity -> ok end
end,
erl_java_link(LinkFun,erl_link_java_exit,Config).
%%%-----------------------------------------------------------------
java_link_erl_exit(doc) ->
["MboxLinkUnlink.java: "
"Test link between erlang process and java mailbox."
"Java mailbox links and erlang process exits"];
java_link_erl_exit(suite) ->
[];
java_link_erl_exit(Config) when is_list(Config) ->
LinkFun =
fun(Mbox) ->
Mbox ! {?java_link_erl_exit,self(),?link_test_reason},
receive ok -> ok end,
exit(?link_test_reason)
end,
erl_java_link(LinkFun,java_link_erl_exit,Config).
%%%-----------------------------------------------------------------
internal_link_linking_exits(doc) ->
["MboxLinkUnlink.java: "
"Test link between two java mailboxes."
"The mailbox which creates the link is the one exiting"];
internal_link_linking_exits(suite) ->
[];
internal_link_linking_exits(Config) when is_list(Config) ->
internal_link_unlink(?internal_link_linking_exits,
internal_link_linking_exits,
Config).
%%%-----------------------------------------------------------------
internal_link_linked_exits(doc) ->
["MboxLinkUnlink.java: "
"Test link between two java mailboxes."
"The mailbox which dies not create the link is the one exiting"];
internal_link_linked_exits(suite) ->
[];
internal_link_linked_exits(Config) when is_list(Config) ->
internal_link_unlink(?internal_link_linked_exits,
internal_link_linked_exits,
Config).
%%%-----------------------------------------------------------------
internal_unlink_linking_exits(doc) ->
["MboxLinkUnlink.java: "
"Test link and unlink between two java mailboxes. "
"Mailbox1 creates a link to mailbox2 and removes it. "
"Then it creates another link and mailbox2 removes is. "
"Finally mailbox1 exits - mailbox2 must survive"];
internal_unlink_linking_exits(suite) ->
[];
internal_unlink_linking_exits(Config) when is_list(Config) ->
internal_link_unlink(?internal_unlink_linking_exits,
internal_unlink_linking_exits,
Config).
%%%-----------------------------------------------------------------
internal_unlink_linked_exits(doc) ->
["MboxLinkUnlink.java: "
"Test link and unlink between two java mailboxes. "
"Mailbox1 creates a link to mailbox2 and removes it. "
"Then it creates another link and mailbox2 removes is. "
"Finally mailbox2 exits - mailbox1 must survive"];
internal_unlink_linked_exits(suite) ->
[];
internal_unlink_linked_exits(Config) when is_list(Config) ->
internal_link_unlink(?internal_unlink_linked_exits,
internal_unlink_linked_exits,
Config).
%%%-----------------------------------------------------------------
normal_exit(doc) ->
["MboxLinkUnlink.java: "
"Test that mbox.close() uses exit reason 'normal', i.e. "
"that linked processes are not terminated."];
normal_exit(suite) ->
[];
normal_exit(Config) when is_list(Config) ->
Fun =
fun() ->
register(erl_link_server,self()),
process_flag(trap_exit,true),
receive
{Main,Mbox} when is_pid(Main), is_pid(Mbox) ->
?dbg("Erlang sending \"~p\"",[normal_exit]),
link(Mbox),
Pid = spawn_link(fun() ->
link(Mbox),
Mbox ! {?normal_exit},
receive after infinity -> ok end
end),
receive
{'EXIT',Mbox,normal} ->
%% Make sure that we don't get the
%% exit signal from Pid, and Pid
%% should still be alive.
receive
{'EXIT',Pid,Reason} ->
?dbg("Got unexpected exit signal: ~p",
[{'EXIT',Pid,Reason}]),
exit({unexpected,{'EXIT',Pid,Reason}})
after 500 ->
true = erlang:is_process_alive(Pid),
exit(Pid,kill)
end,
receive done -> Main ! done end
after 1000 ->
receive
Other ->
?dbg("Got garbage when waiting for exit:"
" ~p", [Other]),
Main ! done,
exit({got_unexpected,Other})
after 0 ->
ok
end
end;
Other ->
?dbg("Got garbage: ~p",[Other]),
exit(Other)
end
end,
spawn_link(Fun),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"MboxLinkUnlink",
[erlang:get_cookie(),node()]).
%%%-----------------------------------------------------------------
kill_mbox(doc) ->
["MboxLinkUnlink.java: "
"Test that mbox.exit(new OtpErlangAtom(\"kill\") causes linked "
"processes to exit with reason 'killed', which can be trapped."];
kill_mbox(suite) ->
{skip, "Not yet implemented"};
kill_mbox(Config) when is_list(Config) ->
Fun =
fun() ->
register(erl_link_server,self()),
process_flag(trap_exit,true),
receive
{Main,Mbox} when is_pid(Main), is_pid(Mbox) ->
?dbg("Erlang sending \"~p\"",[kill_mbox]),
Pid = spawn_link(fun() ->
process_flag(trap_exit,true),
link(Mbox),
Mbox ! {?kill_mbox},
receive
{'EXIT',Mbox,killed} ->
exit(correct_reason);
{'EXIT',Mbox,R} ->
exit({faulty_reason,R})
end
end),
receive
{'EXIT',Pid,{faulty_reason,Reason}} ->
receive done -> Main ! done end,
exit({faulty_reason,Reason});
{'EXIT',Pid,im_killed} ->
receive done -> Main ! done end
after 1000 ->
receive
Other ->
?dbg("Got garbage when waiting for exit:"
" ~p", [Other]),
Main ! done,
exit({got_unexpected,Other})
after 0 ->
ok
end
end;
Other ->
?dbg("Got garbage: ~p",[Other]),
exit(Other)
end
end,
spawn_link(Fun),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"MboxLinkUnlink",
[erlang:get_cookie(),node()]).
%%%-----------------------------------------------------------------
kill_erl_proc_from_java(doc) ->
["MboxLinkUnlink.java: "
"Test that mbox.exit(pid, new OtpErlangAtom(\"kill\") causes erlang "
"processes <pid> to be killed, even if trapping exits"];
kill_erl_proc_from_java(suite) ->
[];
kill_erl_proc_from_java(Config) when is_list(Config) ->
LinkFun = fun(Mbox) ->
process_flag(trap_exit,true),
link(Mbox),
Mbox ! {?kill_erl_proc_from_java, self()},
receive after infinity -> ok end
end,
erl_java_link(LinkFun,kill_erl_proc_from_java,killed,Config).
%%%-----------------------------------------------------------------
kill_mbox_from_erlang(doc) ->
["MboxLinkUnlink.java: "
"Test that exit(Mbox,kill) causes linked the Mbox to be killed, and"
"linked processes to exit with reason 'killed', even if trapping exits"];
kill_mbox_from_erlang(suite) ->
{skip, "Not yet implemented"};
kill_mbox_from_erlang(Config) when is_list(Config) ->
LinkFun = fun(Mbox) ->
link(Mbox),
Mbox ! {?kill_mbox_from_erlang},
exit(Mbox,kill),
receive after infinity -> ok end
end,
erl_java_link(LinkFun,kill_mbox_from_erlang,killed,Config).
%%%-----------------------------------------------------------------
erl_exit_with_reason_any_term(doc) ->
["MboxLinkUnlink.java: "
"Test that any erlang term can be used as exit reason when erlang "
"process exits and is linked to an mbox."];
erl_exit_with_reason_any_term(suite) ->
[];
erl_exit_with_reason_any_term(Config) when is_list(Config) ->
Reason = [hei,self(),{this,is,"a",[different,"reason"]}],
LinkFun = fun(Mbox) ->
link(Mbox),
Mbox ! {?erl_exit_with_reason_any_term,self(),Reason},
receive ok -> ok end,
exit(Reason)
end,
erl_java_link(LinkFun,erl_exit_with_reason_any_term,Reason,Config).
%%%-----------------------------------------------------------------
java_exit_with_reason_any_term(doc) ->
["MboxLinkUnlink.java: "
"Test that any erlang term can be used as exit reason when mbox "
"exits and is linked to an erlang process."];
java_exit_with_reason_any_term(suite) ->
[];
java_exit_with_reason_any_term(Config) when is_list(Config) ->
Reason = [hei,self(),{this,is,"a",[different,"reason"]}],
LinkFun =
fun(Mbox) ->
Mbox ! {?java_exit_with_reason_any_term,self(),Reason},
receive after infinity -> ok end
end,
erl_java_link(LinkFun,java_exit_with_reason_any_term,Reason,Config).
%%%-----------------------------------------------------------------
status_handler_localStatus(doc) ->
["NodeStatusHandler.java: "
"Test OtpNode.registerStatusHandler(...) and the callback "
"OtpNodeStatus.localStatus(...)"];
status_handler_localStatus(suite) ->
[];
status_handler_localStatus(Config) when is_list(Config) ->
spawn_link(fun() ->
erl_status_server([{opt,{localStatus,"javanode1",true}},
{localStatus,"javanode1",false}])
end),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"NodeStatusHandler",
[erlang:get_cookie(),node(),?status_handler_localStatus]).
%%%-----------------------------------------------------------------
status_handler_remoteStatus(doc) ->
["NodeStatusHandler.java: "
"Test OtpNode.registerStatusHandler(...) and the callback "
"OtpNodeStatus.remoteStatus(...)"];
status_handler_remoteStatus(suite) ->
[];
status_handler_remoteStatus(Config) when is_list(Config) ->
spawn_link(fun() ->
erl_status_server([{opt,{localStatus,"javanode1",true}},
{remoteStatus,"javanode2",true},
{remoteStatus,"javanode2",false}])
end),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"NodeStatusHandler",
[erlang:get_cookie(),node(),?status_handler_remoteStatus]).
%%%-----------------------------------------------------------------
status_handler_connAttempt(doc) ->
["NodeStatusHandler.java: "
"Test OtpNode.registerStatusHandler(...) and the callback "
"OtpNodeStatus.connAttempt(...)"];
status_handler_connAttempt(suite) ->
[];
status_handler_connAttempt(Config) when is_list(Config) ->
spawn_link(fun() ->
erl_status_server([{opt,{localStatus,"javanode1",true}},
{connAttempt,"unknown",true},
{connAttempt,"javanode3",false}])
end),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"NodeStatusHandler",
[erlang:get_cookie(),node(),?status_handler_connAttempt]).
%%%-----------------------------------------------------------------
%%% INTERNAL FUNCTIONS
%%%-----------------------------------------------------------------
send_receive(TestCaseTag,Fun,Config) ->
spawn(fun() ->
register(erl_send_receive_server,self()),
receive
From when is_pid(From) ->
JavaNode = node(From),
[JavaNode] = nodes(hidden),
From ! {TestCaseTag,self()},
Fun(),
unregister(erl_send_receive_server)
end
end),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"MboxSendReceive",
[erlang:get_cookie(),node()]).
internal_link_unlink(Tag,Msg,Config) ->
Fun =
fun() ->
register(erl_link_server,self()),
process_flag(trap_exit,true),
receive
{Main,Mbox} when is_pid(Main), is_pid(Mbox) ->
?dbg("Erlang sending \"~p\"",[Msg]),
Mbox ! {Tag,self(),?link_test_reason},
receive done -> Main ! done end;
Other ->
?dbg("Got garbage: ~p",[Other]),
exit(Other)
end
end,
spawn_link(Fun),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"MboxLinkUnlink",
[erlang:get_cookie(),node()]).
erl_java_link(LinkFun,Msg,Config) ->
erl_java_link(LinkFun,Msg,?link_test_reason,Config).
erl_java_link(LinkFun,Msg,Reason,Config) ->
Fun =
fun() ->
register(erl_link_server,self()),
process_flag(trap_exit,true),
receive
{Main,Mbox} when is_pid(Mbox), is_pid(Mbox) ->
?dbg("Erlang sending \"~p\"",[Msg]),
Pid = spawn_link(fun() -> LinkFun(Mbox) end),
receive
{'EXIT',Pid,Reason} ->
receive done -> Main ! done end
after 1000 ->
receive
Other ->
?dbg("Got garbage when waiting for exit:"
" ~p", [Other]),
Main ! done,
exit({got_unexpected,Other})
after 0 ->
ok
end
end;
Other ->
?dbg("Got garbage: ~p",[Other]),
exit(Other)
end
end,
spawn_link(Fun),
ok = jitu:java(?config(java, Config),
?config(data_dir, Config),
"MboxLinkUnlink",
[erlang:get_cookie(),node()]).
erl_status_server(List) ->
register(erl_status_server,self()),
erl_status_server(List,undefined).
erl_status_server([{opt,{Tag,NodeName,Up}},{Tag2,NodeName2,Up2}|Rest],_) ->
receive
{Tag,Node,Up,From} = M ->
?dbg("erl_status_server got: ~p",[M]),
true = lists:prefix(NodeName,Node),
erl_status_server([{Tag2,NodeName2,Up2}|Rest],From);
{Tag2,Node2,Up2,From2} = M2 ->
?dbg("erl_status_server got: ~p",[M2]),
true = lists:prefix(NodeName2,Node2),
erl_status_server(Rest,From2)
end;
erl_status_server([{Tag,NodeName,Up}|Rest],_) ->
receive
{Tag,Node,Up,From} = M ->
?dbg("erl_status_server got: ~p",[M]),
true = lists:prefix(NodeName,Node),
erl_status_server(Rest,From);
Other ->
?dbg("erl_status_server got garbage: ~p",[Other]),
exit(Other)
end;
erl_status_server([],From) ->
From ! done.
