%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1998-2014. 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%
%%
%%%-------------------------------------------------------------------
%%% Purpose: Test server support functions.
%%%-------------------------------------------------------------------
-module(test_server_sup).
-export([timetrap/2, timetrap/3, timetrap/4,
timetrap_cancel/1, capture_get/1, messages_get/1,
timecall/3, call_crash/5, app_test/2, check_new_crash_dumps/0,
cleanup_crash_dumps/0, crash_dump_dir/0, tar_crash_dumps/0,
get_username/0, get_os_family/0,
hostatom/0, hostatom/1, hoststr/0, hoststr/1,
framework_call/2,framework_call/3,framework_call/4,
format_loc/1,
util_start/0, util_stop/0, unique_name/0,
call_trace/1,
appup_test/1]).
-include("test_server_internal.hrl").
-define(crash_dump_tar,"crash_dumps.tar.gz").
-define(src_listing_ext, ".src.html").
-record(util_state, {starter, latest_name}).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% timetrap(Timeout,Scale,Pid) -> Handle
%% Handle = term()
%%
%% Creates a time trap, that will kill the given process if the
%% trap is not cancelled with timetrap_cancel/1, within Timeout
%% milliseconds.
%% Scale says if the time should be scaled up to compensate for
%% delays during the test (e.g. if cover is running).
timetrap(Timeout0, Pid) ->
timetrap(Timeout0, Timeout0, true, Pid).
timetrap(Timeout0, Scale, Pid) ->
timetrap(Timeout0, Timeout0, Scale, Pid).
timetrap(Timeout0, ReportTVal, Scale, Pid) ->
process_flag(priority, max),
Timeout = if not Scale -> Timeout0;
true -> test_server:timetrap_scale_factor() * Timeout0
end,
TruncTO = trunc(Timeout),
receive
after TruncTO ->
case is_process_alive(Pid) of
true ->
TimeToReport = if Timeout0 == ReportTVal -> TruncTO;
true -> ReportTVal end,
MFLs = test_server:get_loc(Pid),
Mon = erlang:monitor(process, Pid),
Trap = {timetrap_timeout,TimeToReport,MFLs},
exit(Pid, Trap),
receive
{'DOWN', Mon, process, Pid, _} ->
ok
after 10000 ->
%% Pid is probably trapping exits, hit it harder...
catch error_logger:warning_msg(
"Testcase process ~w not "
"responding to timetrap "
"timeout:~n"
" ~p.~n"
"Killing testcase...~n",
[Pid, Trap]),
exit(Pid, kill)
end;
false ->
ok
end
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% timetrap_cancel(Handle) -> ok
%% Handle = term()
%%
%% Cancels a time trap.
timetrap_cancel(Handle) ->
unlink(Handle),
MonRef = erlang:monitor(process, Handle),
exit(Handle, kill),
receive {'DOWN',MonRef,_,_,_} -> ok
after
2000 ->
erlang:demonitor(MonRef, [flush]),
ok
end.
capture_get(Msgs) ->
receive
{captured,Msg} ->
capture_get([Msg|Msgs])
after 0 ->
lists:reverse(Msgs)
end.
messages_get(Msgs) ->
receive
Msg ->
messages_get([Msg|Msgs])
after 0 ->
lists:reverse(Msgs)
end.
timecall(M, F, A) ->
{Elapsed, Val} = timer:tc(M, F, A),
{Elapsed / 1000000, Val}.
call_crash(Time,Crash,M,F,A) ->
OldTrapExit = process_flag(trap_exit,true),
Pid = spawn_link(M,F,A),
Answer =
receive
{'EXIT',Crash} ->
ok;
{'EXIT',Pid,Crash} ->
ok;
{'EXIT',_Reason} when Crash==any ->
ok;
{'EXIT',Pid,_Reason} when Crash==any ->
ok;
{'EXIT',Reason} ->
test_server:format(12, "Wrong crash reason. Wanted ~p, got ~p.",
[Crash, Reason]),
exit({wrong_crash_reason,Reason});
{'EXIT',Pid,Reason} ->
test_server:format(12, "Wrong crash reason. Wanted ~p, got ~p.",
[Crash, Reason]),
exit({wrong_crash_reason,Reason});
{'EXIT',OtherPid,Reason} when OldTrapExit == false ->
exit({'EXIT',OtherPid,Reason})
after do_trunc(Time) ->
exit(call_crash_timeout)
end,
process_flag(trap_exit,OldTrapExit),
Answer.
do_trunc(infinity) -> infinity;
do_trunc(T) -> trunc(T).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% app_test/2
%%
%% Checks one applications .app file for obvious errors.
%% Checks..
%% * .. required fields
%% * .. that all modules specified actually exists
%% * .. that all requires applications exists
%% * .. that no module included in the application has export_all
%% * .. that all modules in the ebin/ dir is included
%% (This only produce a warning, as all modules does not
%% have to be included (If the `pedantic' option isn't used))
app_test(Application, Mode) ->
case is_app(Application) of
{ok, AppFile} ->
do_app_tests(AppFile, Application, Mode);
Error ->
test_server:fail(Error)
end.
is_app(Application) ->
case file:consult(filename:join([code:lib_dir(Application),"ebin",
atom_to_list(Application)++".app"])) of
{ok, [{application, Application, AppFile}] } ->
{ok, AppFile};
_ ->
test_server:format(minor,
"Application (.app) file not found, "
"or it has very bad syntax.~n"),
{error, not_an_application}
end.
do_app_tests(AppFile, AppName, Mode) ->
DictList=
[
{missing_fields, []},
{missing_mods, []},
{superfluous_mods_in_ebin, []},
{export_all_mods, []},
{missing_apps, []}
],
fill_dictionary(DictList),
%% An appfile must (?) have some fields..
check_fields([description, modules, registered, applications], AppFile),
%% Check for missing and extra modules.
{value, {modules, Mods}}=lists:keysearch(modules, 1, AppFile),
EBinList=lists:sort(get_ebin_modnames(AppName)),
{Missing, Extra} = common(lists:sort(Mods), EBinList),
put(superfluous_mods_in_ebin, Extra),
put(missing_mods, Missing),
%% Check that no modules in the application has export_all.
app_check_export_all(Mods),
%% Check that all specified applications exists.
{value, {applications, Apps}}=
lists:keysearch(applications, 1, AppFile),
check_apps(Apps),
A=check_dict(missing_fields, "Inconsistent app file, "
"missing fields"),
B=check_dict(missing_mods, "Inconsistent app file, "
"missing modules"),
C=check_dict_tolerant(superfluous_mods_in_ebin, "Inconsistent app file, "
"Modules not included in app file.", Mode),
D=check_dict(export_all_mods, "Inconsistent app file, "
"Modules have `export_all'."),
E=check_dict(missing_apps, "Inconsistent app file, "
"missing applications."),
erase_dictionary(DictList),
case A+B+C+D+E of
5 ->
ok;
_ ->
test_server:fail()
end.
app_check_export_all([]) ->
ok;
app_check_export_all([Mod|Mods]) ->
case catch apply(Mod, module_info, [compile]) of
{'EXIT', {undef,_}} ->
app_check_export_all(Mods);
COpts ->
case lists:keysearch(options, 1, COpts) of
false ->
app_check_export_all(Mods);
{value, {options, List}} ->
case lists:member(export_all, List) of
true ->
put(export_all_mods, [Mod|get(export_all_mods)]),
app_check_export_all(Mods);
false ->
app_check_export_all(Mods)
end
end
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% appup_test/1
%%
%% Checks one applications .appup file for obvious errors.
%% Checks..
%% * .. syntax
%% * .. that version in app file matches appup file version
%% * .. validity of appup instructions
%%
%% For library application this function checks that the proper
%% 'restart_application' upgrade and downgrade clauses exist.
appup_test(Application) ->
case is_app(Application) of
{ok, AppFile} ->
case is_appup(Application, proplists:get_value(vsn, AppFile)) of
{ok, Up, Down} ->
StartMod = proplists:get_value(mod, AppFile),
Modules = proplists:get_value(modules, AppFile),
do_appup_tests(StartMod, Application, Up, Down, Modules);
Error ->
test_server:fail(Error)
end;
Error ->
test_server:fail(Error)
end.
is_appup(Application, Version) ->
AppupFile = atom_to_list(Application) ++ ".appup",
AppupPath = filename:join([code:lib_dir(Application), "ebin", AppupFile]),
case file:consult(AppupPath) of
{ok, [{Version, Up, Down}]} when is_list(Up), is_list(Down) ->
{ok, Up, Down};
_ ->
test_server:format(
minor,
"Application upgrade (.appup) file not found, "
"or it has very bad syntax.~n"),
{error, appup_not_readable}
end.
do_appup_tests(undefined, Application, Up, Down, _Modules) ->
%% library application
case Up of
[{<<".*">>, [{restart_application, Application}]}] ->
case Down of
[{<<".*">>, [{restart_application, Application}]}] ->
ok;
_ ->
test_server:format(
minor,
"Library application needs restart_application "
"downgrade instruction.~n"),
{error, library_downgrade_instruction_malformed}
end;
_ ->
test_server:format(
minor,
"Library application needs restart_application "
"upgrade instruction.~n"),
{error, library_upgrade_instruction_malformed}
end;
do_appup_tests(_, _Application, Up, Down, Modules) ->
%% normal application
case check_appup_clauses_plausible(Up, up, Modules) of
ok ->
case check_appup_clauses_plausible(Down, down, Modules) of
ok ->
test_server:format(minor, "OK~n");
Error ->
test_server:format(minor, "ERROR ~p~n", [Error]),
test_server:fail(Error)
end;
Error ->
test_server:format(minor, "ERROR ~p~n", [Error]),
test_server:fail(Error)
end.
check_appup_clauses_plausible([], _Direction, _Modules) ->
ok;
check_appup_clauses_plausible([{Re, Instrs} | Rest], Direction, Modules)
when is_binary(Re) ->
case re:compile(Re) of
{ok, _} ->
case check_appup_instructions(Instrs, Direction, Modules) of
ok ->
check_appup_clauses_plausible(Rest, Direction, Modules);
Error ->
Error
end;
{error, Error} ->
{error, {version_regex_malformed, Re, Error}}
end;
check_appup_clauses_plausible([{V, Instrs} | Rest], Direction, Modules)
when is_list(V) ->
case check_appup_instructions(Instrs, Direction, Modules) of
ok ->
check_appup_clauses_plausible(Rest, Direction, Modules);
Error ->
Error
end;
check_appup_clauses_plausible(Clause, _Direction, _Modules) ->
{error, {clause_malformed, Clause}}.
check_appup_instructions(Instrs, Direction, Modules) ->
case check_instructions(Direction, Instrs, Instrs, [], [], Modules) of
{_Good, []} ->
ok;
{_, Bad} ->
{error, {bad_instructions, Bad}}
end.
check_instructions(_, [], _, Good, Bad, _) ->
{lists:reverse(Good), lists:reverse(Bad)};
check_instructions(UpDown, [Instr | Rest], All, Good, Bad, Modules) ->
case catch check_instruction(UpDown, Instr, All, Modules) of
ok ->
check_instructions(UpDown, Rest, All, [Instr | Good], Bad, Modules);
{error, Reason} ->
NewBad = [{Instr, Reason} | Bad],
check_instructions(UpDown, Rest, All, Good, NewBad, Modules)
end.
check_instruction(up, {add_module, Module}, _, Modules) ->
%% A new module is added
check_module(Module, Modules);
check_instruction(down, {add_module, Module}, _, Modules) ->
%% An old module is re-added
case (catch check_module(Module, Modules)) of
{error, {unknown_module, Module, Modules}} -> ok;
ok -> throw({error, {existing_readded_module, Module}})
end;
check_instruction(_, {load_module, Module}, _, Modules) ->
check_module(Module, Modules);
check_instruction(_, {load_module, Module, DepMods}, _, Modules) ->
check_module(Module, Modules),
check_depend(DepMods);
check_instruction(_, {load_module, Module, Pre, Post, DepMods}, _, Modules) ->
check_module(Module, Modules),
check_depend(DepMods),
check_purge(Pre),
check_purge(Post);
check_instruction(up, {delete_module, Module}, _, Modules) ->
case (catch check_module(Module, Modules)) of
{error, {unknown_module, Module, Modules}} ->
ok;
ok ->
throw({error,{existing_module_deleted, Module}})
end;
check_instruction(down, {delete_module, Module}, _, Modules) ->
check_module(Module, Modules);
check_instruction(_, {update, Module}, _, Modules) ->
check_module(Module, Modules);
check_instruction(_, {update, Module, supervisor}, _, Modules) ->
check_module(Module, Modules);
check_instruction(_, {update, Module, DepMods}, _, Modules)
when is_list(DepMods) ->
check_module(Module, Modules);
check_instruction(_, {update, Module, Change}, _, Modules) ->
check_module(Module, Modules),
check_change(Change);
check_instruction(_, {update, Module, Change, DepMods}, _, Modules) ->
check_module(Module, Modules),
check_change(Change),
check_depend(DepMods);
check_instruction(_, {update, Module, Change, Pre, Post, DepMods}, _, Modules) ->
check_module(Module, Modules),
check_change(Change),
check_purge(Pre),
check_purge(Post),
check_depend(DepMods);
check_instruction(_,
{update, Module, Timeout, Change, Pre, Post, DepMods},
_,
Modules) ->
check_module(Module, Modules),
check_timeout(Timeout),
check_change(Change),
check_purge(Pre),
check_purge(Post),
check_depend(DepMods);
check_instruction(_,
{update, Module, ModType, Timeout, Change, Pre, Post, DepMods},
_,
Modules) ->
check_module(Module, Modules),
check_mod_type(ModType),
check_timeout(Timeout),
check_change(Change),
check_purge(Pre),
check_purge(Post),
check_depend(DepMods);
check_instruction(_, {restart_application, Application}, _, _) ->
check_application(Application);
check_instruction(_, {remove_application, Application}, _, _) ->
check_application(Application);
check_instruction(_, {add_application, Application}, _, _) ->
check_application(Application);
check_instruction(_, {add_application, Application, Type}, _, _) ->
check_application(Application),
check_restart_type(Type);
check_instruction(_, Instr, _, _) ->
throw({error, {low_level_or_invalid_instruction, Instr}}).
check_module(Module, Modules) ->
case {is_atom(Module), lists:member(Module, Modules)} of
{true, true} -> ok;
{true, false} -> throw({error, {unknown_module, Module}});
{false, _} -> throw({error, {bad_module, Module}})
end.
check_application(App) ->
case is_atom(App) of
true -> ok;
false -> throw({error, {bad_application, App}})
end.
check_depend(Dep) when is_list(Dep) -> ok;
check_depend(Dep) -> throw({error, {bad_depend, Dep}}).
check_restart_type(permanent) -> ok;
check_restart_type(transient) -> ok;
check_restart_type(temporary) -> ok;
check_restart_type(load) -> ok;
check_restart_type(none) -> ok;
check_restart_type(Type) -> throw({error, {bad_restart_type, Type}}).
check_timeout(T) when is_integer(T), T > 0 -> ok;
check_timeout(default) -> ok;
check_timeout(infinity) -> ok;
check_timeout(T) -> throw({error, {bad_timeout, T}}).
check_mod_type(static) -> ok;
check_mod_type(dynamic) -> ok;
check_mod_type(Type) -> throw({error, {bad_mod_type, Type}}).
check_purge(soft_purge) -> ok;
check_purge(brutal_purge) -> ok;
check_purge(Purge) -> throw({error, {bad_purge, Purge}}).
check_change(soft) -> ok;
check_change({advanced, _}) -> ok;
check_change(Change) -> throw({error, {bad_change, Change}}).
%% Given two sorted lists, L1 and L2, returns {NotInL2, NotInL1},
%% NotInL2 is the elements of L1 which don't occurr in L2,
%% NotInL1 is the elements of L2 which don't ocurr in L1.
common(L1, L2) ->
common(L1, L2, [], []).
common([X|Rest1], [X|Rest2], A1, A2) ->
common(Rest1, Rest2, A1, A2);
common([X|Rest1], [Y|Rest2], A1, A2) when X < Y ->
common(Rest1, [Y|Rest2], [X|A1], A2);
common([X|Rest1], [Y|Rest2], A1, A2) ->
common([X|Rest1], Rest2, A1, [Y|A2]);
common([], L, A1, A2) ->
{A1, L++A2};
common(L, [], A1, A2) ->
{L++A1, A2}.
check_apps([]) ->
ok;
check_apps([App|Apps]) ->
case is_app(App) of
{ok, _AppFile} ->
ok;
{error, _} ->
put(missing_apps, [App|get(missing_apps)])
end,
check_apps(Apps).
check_fields([], _AppFile) ->
ok;
check_fields([L|Ls], AppFile) ->
check_field(L, AppFile),
check_fields(Ls, AppFile).
check_field(FieldName, AppFile) ->
case lists:keymember(FieldName, 1, AppFile) of
true ->
ok;
false ->
put(missing_fields, [FieldName|get(missing_fields)]),
ok
end.
check_dict(Dict, Reason) ->
case get(Dict) of
[] ->
1; % All ok.
List ->
io:format("** ~ts (~ts) ->~n~p~n",[Reason, Dict, List]),
0
end.
check_dict_tolerant(Dict, Reason, Mode) ->
case get(Dict) of
[] ->
1; % All ok.
List ->
io:format("** ~ts (~ts) ->~n~p~n",[Reason, Dict, List]),
case Mode of
pedantic ->
0;
_ ->
1
end
end.
get_ebin_modnames(AppName) ->
Wc=filename:join([code:lib_dir(AppName),"ebin",
"*"++code:objfile_extension()]),
TheFun=fun(X, Acc) ->
[list_to_atom(filename:rootname(
filename:basename(X)))|Acc] end,
_Files=lists:foldl(TheFun, [], filelib:wildcard(Wc)).
%%
%% This function removes any erl_crash_dump* files found in the
%% test server directory. Done only once when the test server
%% is started.
%%
cleanup_crash_dumps() ->
Dir = crash_dump_dir(),
Dumps = filelib:wildcard(filename:join(Dir, "erl_crash_dump*")),
delete_files(Dumps).
crash_dump_dir() ->
filename:dirname(code:which(?MODULE)).
tar_crash_dumps() ->
Dir = crash_dump_dir(),
case filelib:wildcard(filename:join(Dir, "erl_crash_dump*")) of
[] -> {error,no_crash_dumps};
Dumps ->
TarFileName = filename:join(Dir,?crash_dump_tar),
{ok,Tar} = erl_tar:open(TarFileName,[write,compressed]),
lists:foreach(
fun(File) ->
ok = erl_tar:add(Tar,File,filename:basename(File),[])
end,
Dumps),
ok = erl_tar:close(Tar),
delete_files(Dumps),
{ok,TarFileName}
end.
check_new_crash_dumps() ->
Dir = crash_dump_dir(),
Dumps = filelib:wildcard(filename:join(Dir, "erl_crash_dump*")),
case length(Dumps) of
0 ->
ok;
Num ->
test_server_ctrl:format(minor,
"Found ~w crash dumps:~n", [Num]),
append_files_to_logfile(Dumps),
delete_files(Dumps)
end.
append_files_to_logfile([]) -> ok;
append_files_to_logfile([File|Files]) ->
NodeName=from($., File),
test_server_ctrl:format(minor, "Crash dump from node ~tp:~n",[NodeName]),
Fd=get(test_server_minor_fd),
case file:read_file(File) of
{ok, Bin} ->
case file:write(Fd, Bin) of
ok ->
ok;
{error,Error} ->
%% Write failed. The following io:format/3 will probably also
%% fail, but in that case it will throw an exception so that
%% we will be aware of the problem.
io:format(Fd, "Unable to write the crash dump "
"to this file: ~p~n", [file:format_error(Error)])
end;
_Error ->
io:format(Fd, "Failed to read: ~ts\n", [File])
end,
append_files_to_logfile(Files).
delete_files([]) -> ok;
delete_files([File|Files]) ->
io:format("Deleting file: ~ts~n", [File]),
case file:delete(File) of
{error, _} ->
case file:rename(File, File++".old") of
{error, Error} ->
io:format("Could neither delete nor rename file "
"~ts: ~ts.~n", [File, Error]);
_ ->
ok
end;
_ ->
ok
end,
delete_files(Files).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% erase_dictionary(Vars) -> ok
%% Vars = [atom(),...]
%%
%% Takes a list of dictionary keys, KeyVals, erases
%% each key and returns ok.
erase_dictionary([{Var, _Val}|Vars]) ->
erase(Var),
erase_dictionary(Vars);
erase_dictionary([]) ->
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% fill_dictionary(KeyVals) -> void()
%% KeyVals = [{atom(),term()},...]
%%
%% Takes each Key-Value pair, and inserts it in the process dictionary.
fill_dictionary([{Var,Val}|Vars]) ->
put(Var,Val),
fill_dictionary(Vars);
fill_dictionary([]) ->
[].
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% get_username() -> UserName
%%
%% Returns the current user
get_username() ->
getenv_any(["USER","USERNAME"]).
getenv_any([Key|Rest]) ->
case catch os:getenv(Key) of
String when is_list(String) -> String;
false -> getenv_any(Rest)
end;
getenv_any([]) -> "".
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% get_os_family() -> OsFamily
%%
%% Returns the OS family
get_os_family() ->
{OsFamily,_OsName} = os:type(),
OsFamily.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% hostatom()/hostatom(Node) -> Host; atom()
%% hoststr() | hoststr(Node) -> Host; string()
%%
%% Returns the OS family
hostatom() ->
hostatom(node()).
hostatom(Node) ->
list_to_atom(hoststr(Node)).
hoststr() ->
hoststr(node()).
hoststr(Node) when is_atom(Node) ->
hoststr(atom_to_list(Node));
hoststr(Node) when is_list(Node) ->
from($@, Node).
from(H, [H | T]) -> T;
from(H, [_ | T]) -> from(H, T);
from(_H, []) -> [].
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% framework_call(Callback,Func,Args,DefaultReturn) -> Return | DefaultReturn
%%
%% Calls the given Func in Callback
framework_call(Func,Args) ->
framework_call(Func,Args,ok).
framework_call(Func,Args,DefaultReturn) ->
CB = os:getenv("TEST_SERVER_FRAMEWORK"),
framework_call(CB,Func,Args,DefaultReturn).
framework_call(FW,_Func,_Args,DefaultReturn)
when FW =:= false; FW =:= "undefined" ->
DefaultReturn;
framework_call(Callback,Func,Args,DefaultReturn) ->
Mod = list_to_atom(Callback),
case code:is_loaded(Mod) of
false -> code:load_file(Mod);
_ -> ok
end,
case erlang:function_exported(Mod,Func,length(Args)) of
true ->
EH = fun(Reason) -> exit({fw_error,{Mod,Func,Reason}}) end,
SetTcState = case Func of
end_tc -> true;
init_tc -> true;
_ -> false
end,
case SetTcState of
true ->
test_server:set_tc_state({framework,Mod,Func});
false ->
ok
end,
try apply(Mod,Func,Args) of
Result ->
Result
catch
exit:Why ->
EH(Why);
error:Why ->
EH({Why,erlang:get_stacktrace()});
throw:Why ->
EH(Why)
end;
false ->
DefaultReturn
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% format_loc(Loc) -> string()
%%
%% Formats the printout of the line of code read from
%% process dictionary (test_server_loc). Adds link to
%% correct line in source code.
format_loc([{Mod,Func,Line}]) ->
[format_loc1({Mod,Func,Line})];
format_loc([{Mod,Func,Line}|Rest]) ->
["[",format_loc1({Mod,Func,Line}),",\n"|format_loc1(Rest)];
format_loc([{Mod,LineOrFunc}]) ->
format_loc({Mod,LineOrFunc});
format_loc({Mod,Func}) when is_atom(Func) ->
io_lib:format("{~w,~w}",[Mod,Func]);
format_loc(Loc) ->
io_lib:format("~p",[Loc]).
format_loc1([{Mod,Func,Line}]) ->
[" ",format_loc1({Mod,Func,Line}),"]"];
format_loc1([{Mod,Func,Line}|Rest]) ->
[" ",format_loc1({Mod,Func,Line}),",\n"|format_loc1(Rest)];
format_loc1({Mod,Func,Line}) ->
ModStr = atom_to_list(Mod),
case {lists:member(no_src, get(test_server_logopts)),
lists:reverse(ModStr)} of
{false,[$E,$T,$I,$U,$S,$_|_]} ->
io_lib:format("{~w,~w,<a href=\"~ts~ts#~w\">~w</a>}",
[Mod,Func,
test_server_ctrl:uri_encode(downcase(ModStr)),
?src_listing_ext,Line,Line]);
_ ->
io_lib:format("{~w,~w,~w}",[Mod,Func,Line])
end.
downcase(S) -> downcase(S, []).
downcase([Uc|Rest], Result) when $A =< Uc, Uc =< $Z ->
downcase(Rest, [Uc-$A+$a|Result]);
downcase([C|Rest], Result) ->
downcase(Rest, [C|Result]);
downcase([], Result) ->
lists:reverse(Result).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% util_start() -> ok
%%
%% Start local utility process
util_start() ->
Starter = self(),
case whereis(?MODULE) of
undefined ->
spawn_link(fun() ->
register(?MODULE, self()),
util_loop(#util_state{starter=Starter})
end);
_Pid ->
ok
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% util_stop() -> ok
%%
%% Stop local utility process
util_stop() ->
try (?MODULE ! {self(),stop}) of
_ ->
receive {?MODULE,stopped} -> ok
after 5000 -> exit(whereis(?MODULE), kill)
end
catch
_:_ ->
ok
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% unique_name() -> string()
%%
unique_name() ->
?MODULE ! {self(),unique_name},
receive {?MODULE,Name} -> Name
after 5000 -> exit({?MODULE,no_util_process})
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% util_loop(State) -> ok
%%
util_loop(State) ->
receive
{From,unique_name} ->
Nr = erlang:unique_integer([positive]),
Name = integer_to_list(Nr),
if Name == State#util_state.latest_name ->
timer:sleep(1),
self() ! {From,unique_name},
util_loop(State);
true ->
From ! {?MODULE,Name},
util_loop(State#util_state{latest_name = Name})
end;
{From,stop} ->
catch unlink(State#util_state.starter),
From ! {?MODULE,stopped},
ok
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% call_trace(TraceSpecFile) -> ok
%%
%% Read terms on format {m,Mod} | {f,Mod,Func}
%% from TraceSpecFile and enable call trace for
%% specified functions.
call_trace(TraceSpec) ->
case catch try_call_trace(TraceSpec) of
{'EXIT',Reason} ->
erlang:display(Reason),
exit(Reason);
Ok ->
Ok
end.
try_call_trace(TraceSpec) ->
case file:consult(TraceSpec) of
{ok,Terms} ->
dbg:tracer(),
%% dbg:p(self(), [p, m, sos, call]),
dbg:p(self(), [sos, call]),
lists:foreach(fun({m,M}) ->
case dbg:tpl(M,[{'_',[],[{return_trace}]}]) of
{error,What} -> exit({error,{tracing_failed,What}});
_ -> ok
end;
({f,M,F}) ->
case dbg:tpl(M,F,[{'_',[],[{return_trace}]}]) of
{error,What} -> exit({error,{tracing_failed,What}});
_ -> ok
end;
(Huh) ->
exit({error,{unrecognized_trace_term,Huh}})
end, Terms),
ok;
{_,Error} ->
exit({error,{tracing_failed,TraceSpec,Error}})
end.
