appmon: Move runtime part to runtime_tools app

3 files changed, 5 insertions, 963 deletions

diff --git a/lib/appmon/src/Makefile b/lib/appmon/src/Makefile
index 06e61b7cc8..9dc47ab84e 100644
--- a/lib/appmon/src/Makefile
+++ b/lib/appmon/src/Makefile
@@ -37,13 +37,15 @@ MODULES= \
 	appmon \
 	appmon_a \
 	appmon_dg \
-	appmon_info \
 	appmon_place \
 	appmon_txt \
 	appmon_lb \
 	process_info \
 	appmon_web
 
+#	appmon_info \  Moved to runtime tools where it belongs
+
+
 HRL_FILES= appmon_dg.hrl
 
 ERL_FILES= $(MODULES:%=%.erl)
diff --git a/lib/appmon/src/appmon.app.src b/lib/appmon/src/appmon.app.src
index 2e1aa3ef3b..aa6a08772e 100644
--- a/lib/appmon/src/appmon.app.src
+++ b/lib/appmon/src/appmon.app.src
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2012. 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
@@ -18,7 +18,7 @@
 {application, appmon,
  [{description, "DEVTOOLS  CXC 138 16"},
   {vsn, "%VSN%"},
-  {modules, [appmon, appmon_a, appmon_dg, appmon_info,
+  {modules, [appmon, appmon_a, appmon_dg, %% appmon_info, moved to runtime tools
 	     appmon_lb, appmon_place, appmon_txt,process_info,appmon_web]},
   {registered,[appmon, appmon_info, appmon_txt,webappmon_server,proc_info]},
   {applications, [kernel, stdlib]}]}.
diff --git a/lib/appmon/src/appmon_info.erl b/lib/appmon/src/appmon_info.erl
deleted file mode 100644
index 332140f69d..0000000000
--- a/lib/appmon/src/appmon_info.erl
+++ /dev/null
@@ -1,960 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2010. 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%
-%%
-%%----------------------------------------------------------------------
-%%
-%% Information centre for appmon. Must be present on each node
-%% monitored.
-%%
-%%
-%%	A worklist is maintained that contain all current work that
-%%	should be performed at each timeout. Each entry in the
-%%	worklist describes where the result shall be sent and a list
-%%	of options relevant for that particular task
-%%
-%%
-%% Maintenance Note:
-%%
-%%	This module is supposed to be updated by any who would like to
-%%	subscribe for information. The idea is that several tools
-%%	could use this module for their core information gathering
-%%	services.
-%%
-%%	The module is based on the notion of tasks. Each task should
-%%	have a nice public interface function which should handle task
-%%	administration. Tasks are identified by a "key" consisting of
-%%	three items, the requesting pid, the name of the task and the
-%%	task auxillary parameter. The requesting pid is the pid of the
-%%	callee (in the appmon case it can be the node window for
-%%	instance), the task name is whatever name the task is given
-%%	(in the appmon case it can be app, app_ctrl or load). The task
-%%	name can be seen as the type of the task. The task auxillary
-%%	parameter is an all purpose parameter that have a different
-%%	meaning for each type of task so in appmon the Aux for app
-%%	contains the root pid of the monitored application and in
-%%	app_ctrl it contains the node name (just to distinguish from
-%%	the other app_ctrl tasks, if any) while the Aux parameter is
-%%	not used for the load task at all.
-%%
-%%	Each task also carries a list of options for
-%%	customisation. The options valid for a task is completely
-%%	internal to that task type except for the timeout option which
-%%	is used by do_work to determine the interval at which to
-%%	perform the task. The timeout option may also have the value
-%%	at_most_once that indicates that the task should not be done
-%%	more than once, in appmon the remote port (or process) info
-%%	(pinfo) task is such a task that is only done once for each
-%%	call. Note that the only way to change or update options is to
-%%	call the public interface function for the task, this will
-%%	merge the old options with the new ones and also force the
-%%	task to be executed.
-%%
-%%	All tasks are managed by the do_work function. The basic
-%%	functionality being that the result of the task is compared to
-%%	the previous result and a delivery is sent to the callee if
-%%	they differ. Most tasks are then done on a regular basis using
-%%	the timer module for a delay.
-%%	
-%%	There are a limited number of places where the module need to
-%%	be updated when new services are added, they are all marked
-%%	with "Maintenance Note", and here is a quick guide:
-%%
-%%	First implement the task. Put the functions in this module
-%%	among the other task implementations. Currently all task
-%%	implementations should be put in this file to make it simple
-%%	to monitor a node, this module should be the only one
-%%	needed. Then add your implementation to the do_work2 function
-%%	and finally add a public interface function among the other
-%%	public interface functions. Voila.
-%%
-%%
-%%
-%%	Future ideas:
-%%
-%%	Appmon should maybe be enhanced to show all processes on a
-%%	node. First put all processes in an ets P, then pick those
-%%	that belong to applications (the normal way), then try to find
-%%	those processes that are roots in process link trees and pick
-%%	them. The final step would be to do something with those
-%%	processes that are left.
-%%
-%%----------------------------------------------------------------------
--module(appmon_info).
--behaviour(gen_server).
-
-%% Exported functions
--export([start_link/3, app/4, pinfo/4, load/4, app_ctrl/4]).
-
-%% For internal use (RPC call)
--export([start_link2/3]).
-
-%% For debugging
--export([status/0]).
-
-%% gen_server callbacks
--export([init/1, handle_call/3, handle_cast/2, handle_info/2,
-	 terminate/2, code_change/3]).
-
-
-%%----------------------------------------------------------------------
-%% The records
-%%
-%%	state is used for keeping track of all tasks.
-%%
-%%	db is the database used in the app task.
-%%
-
--record(state, {starter, opts=[], work=[], clients=[]}).
--record(db, {q, p, links, links2}).
-
-
-%%----------------------------------------------------------------------
-%% Macros
-%%
-
--define(MK_KEY(CMD, AUX, FROM, OPTS), {CMD, AUX, FROM}).
--define(MK_DOIT(KEY), {do_it, KEY}).
--define(ifthen(P,S), if P -> S; true -> ok end).
-
-
-%%----------------------------------------------------------------------
-%% Public interface
-%%
-%%	The Aux parameter is an auxillary parameter that can be used
-%%	freely by the requesting process, it is included in the work
-%%	task key. appmon uses it for storing the node name when
-%%	requesting load and app_ctrl tasks, and appmon_a uses it for
-%%	storing application name when requesting app task.
-%%
-%%	Maintenance Note: Put new tasks at the end, please.
-%%
-
-
-%% Do not use gen_server:start_link because we do not want the
-%% appmon_info to die when initiating process dies unless special
-%% conditions apply.
-%% Uhu, we don't??? Made a fix so that this proces DOES indeed die
-%% if it's starter dies. /Gunilla
-start_link(Node, Client, Opts) ->
-    rpc:call(Node, ?MODULE, start_link2, [self(), Client, Opts]).
-start_link2(Starter, Client, Opts) ->
-    Name = {local, ?MODULE},
-    Args = {Starter, Opts, Client},
-    case gen_server:start(Name, ?MODULE, Args, []) of
-	{ok, Pid} ->
-	    {ok, Pid};
-	{error, {already_started, Pid}} -> 
-	    register_client(Pid, Client),
-	    {ok, Pid}
-    end.
-	
-
-%% app_ctrl
-%%
-%%	Monitors which applications exist on a node
-%%
-app_ctrl(Serv, Aux, OnOff, Opts) ->
-    gen_server:cast(Serv, {self(), app_ctrl, Aux, OnOff, Opts}).
-
-
-%% load
-%%
-%%	Monitors load on a node
-%%
-load(Serv, Aux, OnOff, Opts) ->
-    gen_server:cast(Serv, {self(), load, Aux, OnOff, Opts}).
-
-
-%% app
-%%
-%%	Monitors one application given by name (this ends up in a
-%%	process tree
-%%
-app(Serv, AppName, OnOff, Opts) ->
-    gen_server:cast(Serv, {self(), app, AppName, OnOff, Opts}).
-
-%% pinfo
-%%
-%%	Process or Port info
-%%
-pinfo(Serv, Pid, OnOff, Opt) ->
-    gen_server:cast(Serv, {self(), pinfo, Pid, OnOff, Opt}).
-
-%% register_client
-%%
-%%	Registers a client (someone subscribing for information)
-%%
-
-register_client(Serv, P) ->
-    link(Serv),
-    gen_server:call(Serv, {register_client, P}).
-
-%% status
-%%
-%%	Status of appmon_info
-%%
-
-status() ->
-    gen_server:cast(?MODULE, status).
-
-%%----------------------------------------------------------------------
-%%
-%% Gen server administration
-%%
-%%----------------------------------------------------------------------
-
-init({Starter, Opts, Pid}) ->
-    link(Pid),
-    process_flag(trap_exit, true),
-    WorkStore = ets:new(workstore, [set, public]),
-    {ok, #state{starter=Starter, opts=Opts, work=WorkStore,
-		clients=[Pid]}}.
-
-terminate(_Reason, State) ->
-    ets:delete(State#state.work),
-    ok.
-
-code_change(_OldVsn, State, _Extra) ->
-    {ok, State}.
-
-
-%%----------------------------------------------------------------------
-%%
-%% Gen server calls
-%%
-%%----------------------------------------------------------------------
-
-handle_call({register_client, Pid}, _From, State) ->
-    NewState = case lists:member(Pid, State#state.clients) of
-		   true -> State;
-		   _ -> State#state{clients=[Pid | State#state.clients]}
-	       end,
-    {reply, ok, NewState};
-handle_call(_Other, _From, State) ->
-    {reply, ok, State}.
-
-%%----------------------------------------------------------------------
-%%
-%% Gen server casts
-%%
-%%----------------------------------------------------------------------
-
-%% Cmd = app_ctrl | load | app | pinfo
-handle_cast({From, Cmd, Aux, OnOff, Opts}, State) ->
-    NewState = update_worklist(Cmd, Aux, From, OnOff, Opts, State),
-    {noreply, NewState};
-handle_cast(status, State) ->
-    print_state(State),
-    {noreply, State};
-handle_cast(_Other, State) ->
-    {noreply, State}.
-
-
-%%----------------------------------------------------------------------
-%%
-%% Gen server info's
-%%
-%%----------------------------------------------------------------------
-
-handle_info({do_it, Key}, State) ->
-    ok = do_work(Key, State),
-    {noreply, State};
-
-handle_info({'EXIT', Pid, Reason}, State) ->
-    case State#state.starter of
-	Pid ->
-	    {stop, Reason, State};
-	_Other ->
-	    Work = State#state.work,
-	    del_work(ets:match(Work, {{'$1','$2',Pid}, '_', '_', '_'}),
-		     Pid, Work),
-	    case lists:delete(Pid, State#state.clients) of
-		[] -> case get_opt(stay_resident, State#state.opts) of
-			  true -> {noreply, State#state{clients=[]}};
-			  _ -> {stop, normal, State}
-		      end;
-		NewClients -> {noreply, State#state{clients=NewClients}}
-	    end
-    end;
-handle_info(_Other, State) ->
-    {noreply, State}.
-
-
-%%----------------------------------------------------------------------
-%%
-%% Doing actual work
-%%
-%%----------------------------------------------------------------------
-
-do_work(Key, State) ->
-    WorkStore = State#state.work,
-    {Cmd, Aux, From, _OldRef, Old, Opts} = retrieve(WorkStore, Key),
-    {ok, Result} = do_work2(Cmd, Aux, From, Old, Opts),
-    if
-	Result==Old -> ok;
-	true ->
-	    From ! {delivery, self(), Cmd, Aux, Result}
-    end,
-    case get_opt(timeout, Opts) of
-	at_most_once ->
-	    del_task(Key, WorkStore);
-	T when is_integer(T) ->
-	    {ok, Ref} = timer:send_after(T, ?MK_DOIT(Key)),
-	    store(WorkStore, Key, Ref, Result, Opts)
-    end,
-    ok.
-
-
-%%----------------------------------------------------------------------
-%%
-%% Name: do_work2
-%%
-%% Maintenance Note: Add a clause here for each new task.
-%%
-do_work2(load, _Aux, _From, Old, Opts) ->
-    calc_load(Old, Opts);
-do_work2(app_ctrl, _Aux, _From, _Old, _Opts) ->
-    calc_app_on_node();
-do_work2(app, Aux, _From, _Old, Opts) ->
-    calc_app_tree(Aux, Opts);
-do_work2(pinfo, Aux, _From, _Old, _Opts) ->
-    calc_pinfo(pinfo, Aux);
-do_work2(Cmd, Aux, _From, _Old, _Opts) ->
-    {Cmd, Aux}.
-
-
-retrieve(Tab, Key) ->
-    case ets:lookup(Tab, Key) of
-	[{{Cmd, Aux, From}, Ref, Old, Opts}] ->
-	    {Cmd, Aux, From, Ref, Old, Opts};
-	_Other ->
-	    false
-    end.
-
-store(Tab, Key, Ref, Old, Opts) ->
-    ets:insert(Tab, {Key, Ref, Old, Opts}),
-    Key.
-
-
-%%----------------------------------------------------------------------
-%%
-%% WorkStore handling
-%%
-%%----------------------------------------------------------------------
-
-update_worklist(Cmd, Aux, From, true, Opts, State) ->
-    add_task(Cmd, Aux, From, Opts, State),
-    State;
-update_worklist(Cmd, Aux, From, _Other, _Opts, State) ->
-    del_task(Cmd, Aux, From, State#state.work),
-    State.
-
-%% First check if a task like this already exists and if so cancel its
-%% timer and make really sure that no stray do it command will come
-%% later. Then start a new timer for the task and store it i
-%% WorkStorage
-add_task(Cmd, Aux, From, Opts, State) ->
-    WorkStore = State#state.work,
-    Key = ?MK_KEY(Cmd, Aux, From, Opts),
-    OldOpts = del_task(Key, WorkStore),
-    store(WorkStore, Key, nil, nil, ins_opts(Opts, OldOpts)),
-    catch do_work(Key, State),
-    ok.
-
-%% Delete a list of tasks belonging to a pid
-del_work([[Cmd, Aux] | Ws], Pid, Work) ->
-    del_task(Cmd, Aux, Pid, Work),
-    del_work(Ws, Pid, Work);
-del_work([], _Pid, _Work) -> ok.
-
-%% Must return old options or empty list
-del_task(Cmd, Aux, From, WorkStore) ->
-    del_task(?MK_KEY(Cmd, Aux, From, []), WorkStore).
-del_task(Key, WorkStore) ->
-    OldStuff = retrieve(WorkStore, Key),
-    ets:delete(WorkStore, Key),
-    case OldStuff of
-	{_Cmd, _Aux, _From, Ref, _Old, Opts} ->
-	    if
-		Ref /= nil ->
-		    timer:cancel(Ref),
-		    receive
-			{do_it, Key} ->
-			    Opts
-		    after 10 ->
-			    Opts
-		    end;
-		true -> Opts
-	    end;
-	_ ->
-	    []
-    end.
-
-
-%%
-%% Maintenance Note:
-%%
-%% Add new task implementations somewhere here below.
-%%
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% BEGIN OF calc_app_tree
-%%
-%%	App tree is the process tree shown in the application window
-%%
-%%	The top (root) pid is found by calling
-%%	application_controller:get_master(AppName) and this is done in
-%%	calc_app_on_node (before the call to calc_app_tree).
-%%
-%%	We are going to add processes to the P ets and we are doing it
-%%	in a two step process. First all prospect processes are put on
-%%	the queue Q. Then we examine the front of Q and add this
-%%	process to P if it's not already in P. Then all children of
-%%	the process is put on the queue Q and the process is repeated.
-%%
-%%	We also maintain two link ets'es, one for primary links and
-%%	one for secondary links. These databases are updated at the
-%%	same time as the queue is updated with children.
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-
-calc_app_tree(Name, Opts) ->
-    Mode = get_opt(info_type, Opts),
-    case application_controller:get_master(Name) of
-	Pid when is_pid(Pid) ->
-	    DB = new_db(Mode, Pid),
-	    GL = groupl(Pid),
-	    R = case catch do_find_proc(Mode, DB, GL, find_avoid()) of
-		    {ok, DB2} ->
-			{ok, {format(Pid),
-			      format(ets:tab2list(DB2#db.p)),
-			      format(ets:tab2list(DB2#db.links)), 
-			      format(ets:tab2list(DB2#db.links2))}};
-		    {error, Reason} -> 
-			{error, Reason};
-		    Other ->
-			{error, Other}
-		end,
-	    ets:delete(DB#db.p),
-	    ets:delete(DB#db.links),
-	    ets:delete(DB#db.links2),
-	    R;
-	_ ->
-	    {ok, {[], [], [], []}}
-    end.
-
-get_pid(P) when is_pid(P) -> P;
-get_pid(P) when is_port(P) -> P;
-get_pid(X) when is_tuple(X) -> element(2, X).
-
-
-%----------------------------------------------------------------------
-%%---------------------------------------------------------------------
-%% Handling process trees of processses that are linked to each other
-
-do_find_proc(Mode, DB, GL, Avoid) ->
-    case get_next(DB) of
-	{{value, V}, DB2} ->
-	    do_find_proc2(V, Mode, DB2, GL, Avoid);
-	{empty, DB2} ->
-	    {ok, DB2}
-    end.
-
-do_find_proc2(X, Mode, DB, GL, Avoid) when is_port(X) ->
-    %% There used to be a broken attempt here to handle ports,
-    %% but the rest of appmon can't handle ports, so now we
-    %% explicitly ignore ports.
-    do_find_proc(Mode, DB, GL, Avoid);
-do_find_proc2(X, Mode, DB, GL, Avoid) ->
-    Xpid = get_pid(X),
-    DB2 = case is_proc(DB, Xpid) of
-	      false ->
-		  add_proc(DB, Xpid),
-		  C1 = find_children(X, Mode),
-		  add_children(C1, Xpid, DB, GL, Avoid, Mode);
-	      _ -> 
-		  DB
-	  end,
-    do_find_proc(Mode, DB2, GL, Avoid).
-
-
-%% Find children finds the children of a process. The method varies
-%% with the selected mode (sup or link) and there are also some
-%% processes that must be treated differently, notably the application
-%% master.
-%% 
-find_children(X, sup) when is_pid(X) ->
-    %% This is the first (root) process of a supervision tree and it
-    %% better be a supervisor, we are smoked otherwise
-    supervisor:which_children(X);
-find_children(X, link) when is_pid(X), node(X) /= node() ->
-    [];
-find_children(X, link) when is_pid(X) ->
-    case process_info(X, links) of
-	{links, Links} ->
-	    lists:reverse(Links); % OTP-4082
-	_ -> []
-    end;
-find_children({master, X}, sup) -> 
-    case application_master:get_child(X) of
-	{Pid, _Name} when is_pid(Pid) -> [Pid];
-	Pid when is_pid(Pid) -> [Pid]
-    end;
-find_children({_, _X, worker, _}, sup) -> [];
-find_children({_, X, supervisor, _}, sup) ->
-    lists:filter(fun(Thing) -> 
-			 Pid = get_pid(Thing),
-			 if
-			     is_pid(Pid) -> true;
-			     true -> false
-			 end
-		 end,
-		 supervisor:which_children(X)).
-
-
-%% Add links to primary (L1) or secondary (L2) sets and return an
-%% updated queue. A link is considered secondary if its endpoint is in
-%% the queue of un-visited but known processes.
-add_children(CList, Paren, DB, _GL, _Avoid, sup) ->
-    lists:foldr(fun(C, DB2) -> 
-			case get_pid(C) of
-			    P when is_pid(P) -> 
-				add_prim(C, Paren, DB2);
-			    _ -> DB2 end end,
-		DB, CList);
-
-add_children(CList, Paren, DB, GL, Avoid, _Mode) ->
-    lists:foldr(fun(C, DB2) ->
-			maybe_add_child(C, Paren, DB2, GL, Avoid)
-		end, DB, CList).
-
-%% Check if the child is already in P
-maybe_add_child(C, Paren, DB, GL, Avoid) ->
-    case is_proc(DB, C) of
-	false -> 
-	    maybe_add_child_node(C, Paren, DB, GL, Avoid);
-	_ -> DB					% In P: no action
-    end.
-
-%% Check if process on this node
-maybe_add_child_node(C, Paren, DB, GL, Avoid) ->
-    if
-	node(C) /= node() -> 
-	    add_foreign(C, Paren, DB);
-	true -> 
-	    maybe_add_child_avoid(C, Paren, DB, GL, Avoid)
-    end.
-
-%% Check if child is on the avoid list
-maybe_add_child_avoid(C, Paren, DB, GL, Avoid) ->
-    case lists:member(C, Avoid) of
-	true -> DB;
-	false ->
-	    maybe_add_child_port(C, Paren, DB, GL)
-    end.
-
-%% Check if it is a port, then it is added
-maybe_add_child_port(C, Paren, DB, GL) ->
-    if
-	is_port(C) ->
-	    add_prim(C, Paren, DB);
-	true ->
-	    maybe_add_child_sasl(C, Paren, DB, GL)
-    end.
-
-%% Use SASL stuff if present
-maybe_add_child_sasl(C, Paren, DB, GL) ->
-    case check_sasl_ancestor(Paren, C) of
-	yes ->					% Primary
-	    add_prim(C, Paren, DB);
-	no ->					% Secondary
-	    add_sec(C, Paren, DB);
-	dont_know ->
-	    maybe_add_child_gl(C, Paren, DB, GL)
-    end.
-		    
-%% Check group leader
-maybe_add_child_gl(C, Paren, DB, GL) ->
-    case cmp_groupl(GL, groupl(C)) of
-	true -> maybe_add_child_sec(C, Paren, DB);
-	_ -> DB
-    end.
-
-%% Check if the link should be a secondary one. Note that this part is
-%% pretty much a guess.
-maybe_add_child_sec(C, Paren, DB) ->
-    case is_in_queue(DB, C) of
-	true ->					% Yes, secondary
-	    add_sec(C, Paren, DB);
-	_ ->					% Primary link
-	    add_prim(C, Paren, DB)
-    end.
-
-check_sasl_ancestor(Paren, C) ->
-    case lists:keysearch('$ancestors', 1, 
-			 element(2,process_info(C, dictionary))) of
-	{value, {_, L}} when is_list(L) ->
-	    H = if
-		    is_atom(hd(L)) -> whereis(hd(L));
-		    true -> hd(L)
-		end,
-	    if
-		H == Paren -> yes;
-		true -> no
-	    end;
-	_ -> dont_know
-    end.
-
-
-%----------------------------------------------------------------------
-%%---------------------------------------------------------------------
-%% Primitives for the database DB of all links, processes and the
-%% queue of not visited yet processes.
-
--define(add_link(C, Paren, L), ets:insert(L, {Paren, C})).
-
-new_db(Mode, Pid) ->
-    P  = ets:new(processes, [set, public]),
-    L1 = ets:new(links, [bag, public]),
-    L2 = ets:new(extralinks, [bag, public]),
-    Q = if
-	    Mode =:= sup -> queue:in({master, Pid}, queue:new());
-	    true -> queue:in(Pid, queue:new())
-	end,
-    #db{q=Q, p=P, links=L1, links2=L2}.
-
-get_next(DB) ->
-    {X, Q} = queue:out(DB#db.q),
-    {X, DB#db{q=Q}}.
-add_proc(DB, P) ->
-    ets:insert(DB#db.p, {P}).
-add_prim(C, Paren, DB) ->
-    ?add_link(get_pid(C), Paren, DB#db.links),
-    DB#db{q=queue:in(C, DB#db.q)}.
-add_foreign(C, Paren, DB) ->
-    ?add_link(C, Paren, DB#db.links2),
-    DB#db{q=queue:in(C, DB#db.q)}.
-add_sec(C, Paren, DB) ->
-    ?add_link(C, Paren, DB#db.links2),
-    DB.
-
-is_proc(#db{p=Tab}, P) ->
-    ets:member(Tab, P).
-
-is_in_queue(#db{q=Q}, P) ->
-    queue:member(P, Q).
-
-%% Group leader handling. No processes or Links to processes must be
-%% added when group leaders differ. Note that catch all is needed
-%% because net_sup is undefined when not networked but still present
-%% in the kernel_sup child list. Blahh, didn't like that.
-groupl(P) ->
-    case process_info(P, group_leader) of
-	{group_leader, GL} -> GL;
-	_Other -> nil
-    end.
-
-cmp_groupl(_GL1, nil) -> true;
-cmp_groupl(GL1, GL1) -> true;
-cmp_groupl(_, _) -> false.
-
-
-%% Do some intelligent guessing as to cut in the tree
-find_avoid() ->
-    lists:foldr(fun(X, Accu) -> 
-		       case whereis(X) of
-			   P when is_pid(P) ->
-			       [P|Accu];
-			   _ -> Accu end end,
-		[undefined],
-		[application_controller, init, error_logger, gs, 
-		 node_serv, appmon, appmon_a, appmon_info]).
-
-
-
-%%----------------------------------------------------------------------
-%%
-%% Formats the output strings
-%%
-%%----------------------------------------------------------------------
-format([{P} | Fs]) ->				% Process or port
-    [{P, format(P)} | format(Fs)];
-format([{P1, P2} | Fs]) ->			% Link
-    [{format(P1), format(P2)} | format(Fs)];
-format([]) -> [];
-format(P) when is_pid(P), node(P) /= node() ->
-    pid_to_list(P) ++ " " ++ atom_to_list(node(P));
-format(P) when is_pid(P) ->
-    case process_info(P, registered_name) of
-	{registered_name, Name} -> atom_to_list(Name);
-	_ -> pid_to_list(P)
-    end;
-format(P) when is_port(P) ->
-    "port " ++ integer_to_list(element(2, erlang:port_info(P, id)));
-format(X) ->
-    io:format("What: ~p~n", [X]),
-    "???".
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% END OF calc_app_tree
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% BEGIN OF calc_app_on_node
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-%% Finds all applications on a node
-calc_app_on_node() ->
-    NewApps = reality_check(application:which_applications()),
-    {ok, NewApps}.
-
-
-reality_check([E|Es]) ->
-    N = element(1, E),
-    case catch application_controller:get_master(N) of
-        P when is_pid(P) -> [{P, N, E} | reality_check(Es)];
-        _ -> reality_check(Es)
-    end;
-reality_check([]) -> [].
-
-
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% END OF calc_app_on_node
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% BEGIN OF calc_load
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-calc_load(Old, Opts) ->
-    L = load(Opts),
-    case get_opt(load_average, Opts) of
-	true ->
-	    case Old of
-		{_, L} -> {ok, {L, L}};
-		{_, O2} when abs(L-O2) < 3 -> {ok, {O2, L}};
-		{_, O2}	-> {ok, {O2, trunc((2*L+O2)/3)}};
-		_ -> {ok, {0, L}}
-	    end;
-	_ -> 
-	    case Old of
-		{_, O2} -> {ok, {O2, L}};
-		_ -> {ok, {0, L}}
-	    end
-    end.
-
-
-load(Opts) ->
-    Q   = get_sample(queue),
-
-    case get_opt(load_method, Opts) of
-	time ->
-	    Td  = get_sample(runtime),
-	    Tot = get_sample(tot_time),
-	    
-	    case get_opt(load_scale, Opts) of
-		linear ->
-		    erlang:min(trunc(load_range()*(Td/Tot+Q/6)),
-			load_range());
-		prog ->
-		    erlang:min(trunc(load_range()*prog(Td/Tot+Q/6)),
-			load_range())
-	    end;
-	queue ->
-	    case get_opt(load_scale, Opts) of
-		linear ->
-		    erlang:min(trunc(load_range()*Q/6), load_range());
-		prog ->
-		    erlang:min(trunc(load_range()*prog(Q/6)), load_range())
-		end
-    end.
-
-
-%%
-%% T shall be within 0 and 0.9 for this to work correctly
-prog(T) ->
-    math:sqrt(abs(T)/0.9).
-
-
-get_sample(queue)  -> statistics(run_queue);
-get_sample(runtime)  -> {Rt,Rd} = statistics(runtime), 
-			delta(runtime, Rt, Rd);
-get_sample(tot_time)  -> {Rt,Rd} = statistics(wall_clock), 
-			 delta(tot_time, Rt, Rd).
-
-
-%% Keeps track of differences between calls
-%% Needed because somebody else might have called
-%% statistics/1.
-%%
-%% Note that due to wrap-arounds, we use a cheating 
-%% delta which is correct unless somebody else
-%% uses statistics/1
-delta(KeyWord, Val, CheatDelta) ->
-    RetVal = case get(KeyWord) of 
-		 undefined ->
-		     Val;
-		 Other ->
-		     if
-			 Other > Val ->
-			     CheatDelta;
-			 true ->
-			     Val-Other
-		     end
-	     end,
-    put(KeyWord, Val),
-    RetVal.
-
-
-load_range() -> 16.
-
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% END OF calc_load
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% BEGIN OF calc_pinfo
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-calc_pinfo(pinfo, Pid) when is_pid(Pid) ->
-    Info = process_info(Pid),
-    {ok, io_lib:format("Node: ~p, Process: ~p~n~p~n~n",
-		       [node(), Pid, Info])};
-calc_pinfo(pinfo, Pid) when is_port(Pid) ->
-    Info = lists:map(fun(Key) ->erlang:port_info(Pid, Key) end,
-		     [id, name, connected, links, input, output]),
-    
-    {ok, io_lib:format("Node: ~p, Port: ~p~n~p~n~n", 
-		       [node(),  element(2, erlang:port_info(Pid, id)),
-			Info])};
-calc_pinfo(pinfo, _Pid) ->
-    {ok, ""}.
-
-
-%%----------------------------------------------------------------------
-%%**********************************************************************
-%%
-%%
-%% END OF calc_pinfo
-%%
-%%
-%%**********************************************************************
-%%----------------------------------------------------------------------
-
-
-
-%%----------------------------------------------------------------------
-%%
-%% Print the State
-%%
-%%	-record(state, {opts=[], work=[], clients=[]}).
-%%
-%%----------------------------------------------------------------------
-print_state(State) ->
-    io:format("Status:~n    Opts: ~p~n"
-	      "Clients: ~p~n    WorkStore:~n",
-	      [State#state.opts, State#state.clients]),
-    print_work(ets:tab2list(State#state.work)).
-
-print_work([W|Ws]) ->
-    io:format("        ~p~n", [W]), print_work(Ws);
-print_work([]) -> ok.
-    
-
-%%----------------------------------------------------------------------
-%%
-%% Option handling
-%%
-%%----------------------------------------------------------------------
-
-%% The only options ever set by a user is info_type, timeout,
-%% load_scale and load_method.
-get_opt(Name, Opts) ->
-    case lists:keysearch(Name, 1, Opts) of
-	{value, Val} -> element(2, Val);
-	false -> default(Name)
-    end.
-
-%% not all options have default values
-default(info_type)	-> link;
-default(load_average)	-> true;
-default(load_method)	-> time;
-default(load_scale)	-> prog;
-default(stay_resident)	-> false;
-default(timeout)	-> 2000.
-
-ins_opts([Opt | Opts], Opts2) ->
-    ins_opts(Opts, ins_opt(Opt, Opts2));
-ins_opts([], Opts2) -> Opts2.
-
-ins_opt({Opt, Val}, [{Opt, _} | Os]) -> [{Opt, Val} | Os];
-ins_opt(Opt, [Opt2 | Os]) -> [Opt2 | ins_opt(Opt, Os)];
-ins_opt(Opt, []) -> [Opt].