98 lines
3.2 KiB
Erlang
98 lines
3.2 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_debug.erl
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%%% Author : Mickael Remond
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%%% Purpose : ejabberd's application callback module
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%%% Created : 6 may 2009 by Mickael Remond <mremond@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2010 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License
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%%% along with this program; if not, write to the Free Software
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%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_debug).
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-export([eprof_start/0, fprof_start/0, stop/0]).
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-export([pids/0]).
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eprof_start() ->
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eprof:start(),
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eprof:profile(pids()).
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fprof_start() ->
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fprof:trace([start, {file, "/tmp/fprof"}, {procs, pids()}]).
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%% Stop all profilers
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stop() ->
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catch eprof:stop(),
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catch fprof:stop(),
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ok.
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pids() ->
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lists:zf(
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fun(Pid) ->
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case process_info(Pid) of
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ProcessInfo when is_list(ProcessInfo) ->
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CurrentFunction = current_function(ProcessInfo),
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InitialCall = initial_call(ProcessInfo),
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RegisteredName = registered_name(ProcessInfo),
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Ancestor = ancestor(ProcessInfo),
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filter_pid(Pid, CurrentFunction, InitialCall, RegisteredName, Ancestor);
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_ ->
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false
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end
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end,
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processes()).
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current_function(ProcessInfo) ->
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{value, {_, {CurrentFunction, _,_}}} =
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lists:keysearch(current_function, 1, ProcessInfo),
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atom_to_list(CurrentFunction).
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initial_call(ProcessInfo) ->
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{value, {_, {InitialCall, _,_}}} =
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lists:keysearch(initial_call, 1, ProcessInfo),
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atom_to_list(InitialCall).
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registered_name(ProcessInfo) ->
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case lists:keysearch(registered_name, 1, ProcessInfo) of
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{value, {_, Name}} when is_atom(Name) -> atom_to_list(Name);
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_ -> ""
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end.
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ancestor(ProcessInfo) ->
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{value, {_, Dictionary}} = lists:keysearch(dictionary, 1, ProcessInfo),
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case lists:keysearch('$ancestors', 1, Dictionary) of
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{value, {_, [Ancestor|_T]}} when is_atom(Ancestor) ->
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atom_to_list(Ancestor);
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_ ->
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""
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end.
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filter_pid(Pid, "ejabberd" ++ _, _InitialCall, _RegisteredName, _Ancestor) ->
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{true, Pid};
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filter_pid(Pid, _CurrentFunction, "ejabberd" ++ _, _RegisteredName, _Ancestor) ->
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{true, Pid};
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filter_pid(Pid, _CurrentFunction, _InitialCall, "ejabberd"++_, _Ancestor) ->
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{true, Pid};
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filter_pid(Pid, _CurrentFunction, _InitialCall, "stringprep"++_, _Ancestor) ->
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{true, Pid};
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filter_pid(Pid, _CurrentFunction, _InitialCall, _RegisteredName, "ejabberd"++_) ->
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{true, Pid};
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filter_pid(_Pid, _CurrentFunction, _InitialCall, _RegisteredName, _Ancestor) ->
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false.
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