%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2002-2010. 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%
%%
%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%
%%% Define to run outside of test server
%%%
%%% -define(STANDALONE,1).
%%%
%%%
%%% Define for debug output
%%%
%%% -define(debug,1).
-module(trace_meta_SUITE).
%% Exported end user tests
-export([basic_test/0, return_test/0, on_and_off_test/0, stack_grow_test/0,
info_test/0, tracer_test/0, combo_test/0, nosilent_test/0]).
%% Internal exports
-export([exported/1, exported_wrap/1, loop/4, id/1, receiver/1]).
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Test server related stuff
%%
-ifdef(STANDALONE).
-define(config(A,B),config(A,B)).
-export([config/2]).
-else.
-include_lib("test_server/include/test_server.hrl").
-endif.
-ifdef(debug).
-ifdef(STANDALONE).
-define(line, erlang:display({?MODULE,?LINE}), ).
-endif.
-define(dbgformat(A,B),io:format(A,B)).
-else.
-ifdef(STANDALONE).
-define(line, noop, ).
-endif.
-define(dbgformat(A,B),noop).
-endif.
-ifdef(STANDALONE).
config(priv_dir,_) ->
".".
-else.
%% When run in test server.
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, init_per_testcase/2, fin_per_testcase/2, not_run/1]).
-export([basic/1, return/1, on_and_off/1, stack_grow/1,
info/1, tracer/1, combo/1, nosilent/1]).
init_per_testcase(_Case, Config) ->
?line Dog=test_server:timetrap(test_server:minutes(5)),
[{watchdog, Dog}|Config].
fin_per_testcase(_Case, Config) ->
shutdown(),
Dog=?config(watchdog, Config),
test_server:timetrap_cancel(Dog),
ok.
suite() -> [{suite_callbacks,[ts_install_scb]}].
all() ->
case test_server:is_native(trace_meta_SUITE) of
true -> [not_run];
false ->
[basic, return, on_and_off, stack_grow, info, tracer,
combo, nosilent]
end.
groups() ->
[].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
not_run(Config) when is_list(Config) ->
{skipped,"Native code"}.
basic(suite) ->
[];
basic(doc) ->
["Tests basic meta trace"];
basic(Config) when is_list(Config) ->
basic_test().
return(suite) ->
[];
return(doc) ->
["Tests return trace"];
return(Config) when is_list(Config) ->
return_test().
on_and_off(suite) ->
[];
on_and_off(doc) ->
["Tests turning trace parameters on and off"];
on_and_off(Config) when is_list(Config) ->
on_and_off_test().
stack_grow(doc) ->
["Tests the stack growth during return traces"];
stack_grow(Config) when is_list(Config) ->
stack_grow_test().
info(doc) ->
["Tests the trace_info BIF"];
info(Config) when is_list(Config) ->
info_test().
tracer(suite) ->
[];
tracer(doc) ->
["Tests stopping and changing tracer process"];
tracer(Config) when is_list(Config) ->
tracer_test().
combo(suite) ->
[];
combo(doc) ->
["Tests combining local call trace with meta trace"];
combo(Config) when is_list(Config) ->
combo_test().
nosilent(suite) ->
[];
nosilent(doc) ->
["Tests that meta trace is not silenced by the silent process flag"];
nosilent(Config) when is_list(Config) ->
nosilent_test().
-endif.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Result examination macros
-define(CT(P,MFA),{trace,P,call,MFA}).
-define(CTT(P, MFA),{trace_ts,P,call,MFA,{_,_,_}}).
-define(RF(P,MFA,V),{trace,P,return_from,MFA,V}).
-define(RFT(P,MFA,V),{trace_ts,P,return_from,MFA,V,{_,_,_}}).
-define(RT(P,MFA),{trace,P,return_to,MFA}).
-define(RTT(P,MFA),{trace_ts,P,return_to,MFA,{_,_,_}}).
-define(NM, receive_no_next(100)).
%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% The Tests
%%%
basic_test() ->
?line Pid = setup(),
?line erlang:trace_pattern({?MODULE,'_','_'},[],[meta]),
?line [1,1,1,0] = apply_slave(?MODULE,exported_wrap,[1]),
?line ?CTT(Pid,{?MODULE,exported_wrap,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,exported,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local2,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local_tail,[1]}) = receive_next(),
?line erlang:trace_pattern({?MODULE,'_','_'},false,[meta]),
?line [1,1,1,0] = apply_slave(?MODULE,exported_wrap,[1]),
?line ?NM,
?line [1,1,1,0] = lambda_slave(fun() ->
exported_wrap(1)
end),
?line ?NM,
?line erlang:trace_pattern({?MODULE,'_','_'},[],[meta]),
?line [1,1,1,0] = lambda_slave(fun() ->
exported_wrap(1)
end),
?line ?CTT(Pid,{?MODULE,_,_}) = receive_next(), %% The fun
?line ?CTT(Pid,{?MODULE,exported_wrap,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,exported,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local2,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local_tail,[1]}) = receive_next(),
?line erlang:trace_pattern({?MODULE,'_','_'},false,[meta]),
?line shutdown(),
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
return_test() ->
?line Pid = setup(),
?line erlang:trace_pattern({?MODULE,'_','_'},[{'_',[],[{return_trace}]}],
[meta]),
?line erlang:trace_pattern({erlang,phash2,'_'},[{'_',[],[{return_trace}]}],
[meta]),
?line [1,1,1,0] = apply_slave(?MODULE,exported_wrap,[1]),
?line ?CTT(Pid,{?MODULE,exported_wrap,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,exported,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local2,[1]}) = receive_next(),
?line ?CTT(Pid,{?MODULE,local_tail,[1]}) = receive_next(),
?line ?CTT(Pid,{erlang,phash2,[1,1]}) = receive_next(),
?line ?RFT(Pid,{erlang,phash2,2},0) = receive_next(),
?line ?RFT(Pid,{?MODULE,local_tail,1},[1,0]) = receive_next(),
?line ?RFT(Pid,{?MODULE,local2,1},[1,0]) = receive_next(),
?line ?RFT(Pid,{?MODULE,local,1},[1,1,0]) = receive_next(),
?line ?RFT(Pid,{?MODULE,exported,1},[1,1,1,0]) = receive_next(),
?line ?RFT(Pid,{?MODULE,exported_wrap,1},[1,1,1,0]) = receive_next(),
?line shutdown(),
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
on_and_off_test() ->
?line Pid = setup(),
?line 1 = erlang:trace_pattern({?MODULE,local_tail,1},[],[meta]),
?line LocalTail = fun() ->
local_tail(1)
end,
?line [1,0] = lambda_slave(LocalTail),
?line ?CTT(Pid,{?MODULE,local_tail,[1]}) = receive_next(),
?line 0 = erlang:trace_pattern({?MODULE,local_tail,1},[],[global]),
?line [1,0] = lambda_slave(LocalTail),
?line ?NM,
?line 1 = erlang:trace_pattern({?MODULE,exported_wrap,1},[],[meta]),
?line [1,1,1,0] = apply_slave(?MODULE,exported_wrap,[1]),
?line ?CTT(Pid,{?MODULE,exported_wrap,[1]}) = receive_next(),
?line 1 = erlang:trace_pattern({erlang,phash2,2},[],[meta]),
?line [1,1,1,0] = apply_slave(?MODULE,exported_wrap,[1]),
?line ?CTT(Pid,{?MODULE,exported_wrap,[1]}) = receive_next(),
?line ?CTT(Pid,{erlang,phash2,[1,1]}) = receive_next(),
?line shutdown(),
?line erlang:trace_pattern({'_','_','_'},false,[meta]),
?line N = erlang:trace_pattern({erlang,'_','_'},true,[meta]),
?line case erlang:trace_pattern({erlang,'_','_'},false,[meta]) of
N ->
ok;
Else ->
exit({number_mismatch, {expected, N}, {got, Else}})
end,
?line case erlang:trace_pattern({erlang,'_','_'},false,[meta]) of
N ->
ok;
Else2 ->
exit({number_mismatch, {expected, N}, {got, Else2}})
end,
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
stack_grow_test() ->
?line Pid = setup(),
?line 1 = erlang:trace_pattern({?MODULE,loop,4},
[{'_',[],[{return_trace}]}],[meta]),
?line Num = 1 bsl 15,
?line Surface =
fun (This, ?RFT(P,{?MODULE,loop,4},N), N) when P == Pid->
if N == Num ->
?NM,
ok;
true ->
This(This, receive_next(), N+1)
end
end,
?line Dive =
fun (This, ?CTT(P,{?MODULE,loop,[{hej,hopp},[a,b,c],4.5,N]}), N)
when P == Pid->
if N == 0 ->
Surface(Surface, receive_next(), 0);
true ->
This(This, receive_next(), N-1)
end
end,
?line apply_slave(?MODULE,loop,[{hej,hopp},[a,b,c],4.5,Num]),
% ?line apply_slave_async(?MODULE,loop,[{hej,hopp},[a,b,c],4.5,Num]),
% ?line List = collect(test_server:seconds(5)),
?line ok = Dive(Dive, receive_next(), Num),
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
info_test() ->
?line setup(),
?line Prog = [{['$1'],[{is_integer,'$1'}],[{message, false}]},
{'_',[],[]}],
?line Self = self(),
?line GoOn = make_ref(),
?line Pid =
spawn_link(
fun () ->
erlang:trace_pattern({?MODULE,exported_wrap,1},
Prog, [{meta, Self}]),
Self ! {self(), GoOn}
end),
?line receive {Pid, GoOn} -> ok end,
?line {traced,false} = erlang:trace_info({?MODULE,exported_wrap,1}, traced),
?line {match_spec, false} =
erlang:trace_info({?MODULE,exported_wrap,1}, match_spec),
?line {meta, Self} = erlang:trace_info({?MODULE,exported_wrap,1}, meta),
?line {meta_match_spec, MMS} =
erlang:trace_info({?MODULE,exported_wrap,1}, meta_match_spec),
?line case MMS of
Prog ->
ok;
Wrong ->
exit({bad_result, {erlang,trace_info,
[{?MODULE,exported_wrap,1},
meta_match_spec]},
{expected, Prog}, {got, Wrong}})
end,
?line erlang:garbage_collect(self()),
?line receive
after 1 ->
ok
end,
?line io:format("~p~n",[MMS]),
?line {meta_match_spec,MMS2} =
erlang:trace_info({?MODULE,exported_wrap,1}, meta_match_spec),
?line io:format("~p~n",[MMS2]),
?line case MMS2 of
Prog ->
ok;
Wrong2 ->
exit({bad_result, {erlang,trace_info,
[{?MODULE,exported_wrap,1},
meta_match_spec]},
{expected, Prog}, {got, Wrong2}})
end,
?line {all, [_|_]=L} = erlang:trace_info({?MODULE,exported_wrap,1}, all),
?line {value, {meta, Self}} =
lists:keysearch(meta, 1, L),
?line {value, {meta_match_spec, MMS}} =
lists:keysearch(meta_match_spec, 1, L),
?line erlang:trace_pattern({?MODULE,exported_wrap,1}, true, [meta]),
?line {meta_match_spec, []} =
erlang:trace_info({?MODULE,exported_wrap,1}, meta_match_spec),
?line erlang:trace_pattern({?MODULE,exported_wrap,1}, false, [meta]),
?line {meta, false} = erlang:trace_info({?MODULE,exported_wrap,1}, meta),
?line {meta_match_spec, false} =
erlang:trace_info({?MODULE,exported_wrap,1}, meta_match_spec),
?line {all, false} = erlang:trace_info({?MODULE,exported_wrap,1}, all),
?line shutdown(),
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
tracer_test() ->
?line Slave = setup(),
?line Self = self(),
?line MatchSpec = [{'_',[],[{return_trace}]}],
?line Tracer1 = spawn_link(fun () -> relay_n(3, Self) end),
?line Setter =
spawn_link(
fun () ->
erlang:trace_pattern({?MODULE,receiver,1},
MatchSpec,
[{meta,Tracer1}]),
erlang:trace_pattern({erlang,phash2,2},
MatchSpec,
[{meta,Tracer1}]),
Self ! {self(), done}
end),
?line receive {Setter, done} -> ok end,
?line Ref = make_ref(),
?line apply_slave_async(?MODULE, receiver, [Ref]),
?line {Tracer1,?CTT(Slave,{?MODULE,receiver,[Ref]})} = receive_next(100),
?line {Tracer1,?CTT(Slave,{erlang,phash2,[1,1]})} = receive_next(100),
?line {Tracer1,?RFT(Slave,{erlang,phash2,2},0)} = receive_next(100),
%% Initiate a return_trace that will fail since the tracer just stopped
?line Slave ! Ref,
?line receive_no_next(100),
%% The breakpoint has not been hit since the tracer stopped
?line {meta,Tracer1} =
erlang:trace_info({?MODULE,receiver,1}, meta),
?line {meta_match_spec, MatchSpec} =
erlang:trace_info({?MODULE,receiver,1}, meta_match_spec),
?line {meta,Tracer1} =
erlang:trace_info({erlang,phash2,2}, meta),
?line {meta_match_spec, MatchSpec} =
erlang:trace_info({erlang,phash2,2}, meta_match_spec),
%% Initiate trace messages that will fail
?line Ref2 = make_ref(),
?line apply_slave_async(?MODULE, receiver, [Ref2]),
?line Slave ! Ref2,
?line receive_no_next(100),
?line {meta,[]} =
erlang:trace_info({?MODULE,receiver,1}, meta),
?line {meta_match_spec, MatchSpec} =
erlang:trace_info({?MODULE,receiver,1}, meta_match_spec),
?line {meta,[]} =
erlang:trace_info({erlang,phash2,2}, meta),
?line {meta_match_spec, MatchSpec} =
erlang:trace_info({erlang,phash2,2}, meta_match_spec),
%% Change tracer
?line Tracer2 = spawn_link(fun () -> relay_n(4, Self) end),
?line erlang:trace_pattern({?MODULE,receiver,1},
MatchSpec,
[{meta,Tracer2}]),
?line erlang:trace_pattern({erlang,phash2,2},
MatchSpec,
[{meta,Tracer2}]),
?line Ref3 = make_ref(),
?line apply_slave_async(?MODULE, receiver, [Ref3]),
?line {Tracer2,?CTT(Slave,{?MODULE,receiver,[Ref3]})} = receive_next(),
?line {Tracer2,?CTT(Slave,{erlang,phash2,[1,1]})} = receive_next(),
?line {Tracer2,?RFT(Slave,{erlang,phash2,2},0)} = receive_next(),
%% Change tracer between call trace and return trace
?line Tracer3 = spawn_link(fun () -> relay_n(4, Self) end),
?line erlang:trace_pattern({?MODULE,receiver,1},
MatchSpec,
[{meta,Tracer3}]),
?line erlang:trace_pattern({erlang,phash2,2},
MatchSpec,
[{meta,Tracer3}]),
?line Slave ! Ref3,
%% The return trace should still come from Tracer2
?line {Tracer2,?RFT(Slave,{?MODULE,receiver,1},Ref3)} = receive_next(),
?line Ref4 = make_ref(),
%% Now should Tracer3 be used
?line apply_slave_async(?MODULE, receiver, [Ref4]),
?line Slave ! Ref4,
?line {Tracer3,?CTT(Slave,{?MODULE,receiver,[Ref4]})} = receive_next(),
?line {Tracer3,?CTT(Slave,{erlang,phash2,[1,1]})} = receive_next(),
?line {Tracer3,?RFT(Slave,{erlang,phash2,2},0)} = receive_next(),
?line {Tracer3,?RFT(Slave,{?MODULE,receiver,1},Ref4)} = receive_next(),
%% The breakpoint has not been hit since the tracer stopped
?line {meta,Tracer3} =
erlang:trace_info({?MODULE,receiver,1}, meta),
?line {meta_match_spec, MatchSpec} =
erlang:trace_info({?MODULE,receiver,1}, meta_match_spec),
?line {meta,Tracer3} =
erlang:trace_info({erlang,phash2,2}, meta),
?line {meta_match_spec, MatchSpec} =
erlang:trace_info({erlang,phash2,2}, meta_match_spec),
?line shutdown(),
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
combo_test() ->
?line Slave = setup(),
?line Self = self(),
?line MatchSpec = [{'_',[],[{return_trace}]}],
?line Flags = lists:sort([call, return_to]),
?line LocalTracer = spawn_link(fun () -> relay_n(6, Self) end),
?line MetaTracer = spawn_link(fun () -> relay_n(4, Self) end),
?line 1 = erlang:trace_pattern({?MODULE,receiver,1},
MatchSpec,
[local,{meta,MetaTracer}]),
?line 1 = erlang:trace_pattern({erlang,phash2,2},
MatchSpec,
[local,{meta,MetaTracer}]),
?line 1 = erlang:trace(Slave, true,
[{tracer,LocalTracer} | Flags]),
%%
?line {all, TraceInfo1} =
erlang:trace_info({?MODULE,receiver,1}, all),
?line {meta,MetaTracer} =
erlang:trace_info({?MODULE,receiver,1}, meta),
?line {value,{meta,MetaTracer}} =
lists:keysearch(meta, 1, TraceInfo1),
?line {meta_match_spec,MatchSpec} =
erlang:trace_info({?MODULE,receiver,1}, meta_match_spec),
?line {value,{meta_match_spec,MatchSpec}} =
lists:keysearch(meta_match_spec, 1, TraceInfo1),
?line {traced,local} =
erlang:trace_info({?MODULE,receiver,1}, traced),
?line {value,{traced,local}} =
lists:keysearch(traced, 1, TraceInfo1),
?line {match_spec,MatchSpec} =
erlang:trace_info({?MODULE,receiver,1}, match_spec),
?line {value,{match_spec,MatchSpec}} =
lists:keysearch(match_spec, 1, TraceInfo1),
%%
?line {all, TraceInfo2} =
erlang:trace_info({erlang,phash2,2}, all),
?line {meta,MetaTracer} =
erlang:trace_info({erlang,phash2,2}, meta),
?line {value,{meta,MetaTracer}} =
lists:keysearch(meta, 1, TraceInfo2),
?line {meta_match_spec,MatchSpec} =
erlang:trace_info({erlang,phash2,2}, meta_match_spec),
?line {value,{meta_match_spec,MatchSpec}} =
lists:keysearch(meta_match_spec, 1, TraceInfo2),
?line {traced,local} =
erlang:trace_info({erlang,phash2,2}, traced),
?line {value,{traced,local}} =
lists:keysearch(traced, 1, TraceInfo2),
?line {match_spec,MatchSpec} =
erlang:trace_info({erlang,phash2,2}, match_spec),
?line {value,{match_spec,MatchSpec}} =
lists:keysearch(match_spec, 1, TraceInfo2),
%%
?line {flags,Flags1} = erlang:trace_info(Slave, flags),
?line Flags = lists:sort(Flags1),
?line {tracer,LocalTracer} = erlang:trace_info(Slave, tracer),
%%
?line Ref = make_ref(),
?line apply_slave_async(?MODULE, receiver, [Ref]),
?line Slave ! Ref,
?line ?CTT(Slave,{?MODULE,receiver,[Ref]}) = receive_next_bytag(MetaTracer),
?line ?CTT(Slave,{erlang,phash2,[1,1]}) = receive_next_bytag(MetaTracer),
?line ?RFT(Slave,{erlang,phash2,2},0) = receive_next_bytag(MetaTracer),
?line ?RFT(Slave,{?MODULE,receiver,1},Ref) = receive_next_bytag(MetaTracer),
?line ?CT(Slave,{?MODULE,receiver,[Ref]}) = receive_next_bytag(LocalTracer),
?line ?CT(Slave,{erlang,phash2,[1,1]}) = receive_next_bytag(LocalTracer),
?line case {receive_next_bytag(LocalTracer),
receive_next_bytag(LocalTracer)} of
{?RF(Slave,{erlang,phash2,2},0),
?RT(Slave,{?MODULE,receiver,1})} ->
?line ok;
{?RT(Slave,{?MODULE,receiver,1}),
?RF(Slave,{erlang,phash2,2},0)} ->
?line ok;
Error1 -> ?t:fail({unexpected_message, Error1})
end,
?line case {receive_next_bytag(LocalTracer),
receive_next_bytag(LocalTracer)} of
{?RF(Slave,{?MODULE,receiver,1},Ref),
?RT(Slave,{?MODULE,slave,1})} ->
?line ok;
{?RT(Slave,{?MODULE,slave,1}),
?RF(Slave,{?MODULE,receiver,1},Ref)} ->
?line ok;
Error2 -> ?t:fail({unexpected_message, Error2})
end,
?line shutdown(),
?line ?NM,
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Use case for Inviso meta tracing:
%% Setup silent local call tracing, and start it using meta trace.
nosilent_test() ->
?line Pid = setup(),
?line Trigger = {?MODULE,id,1},
?line TriggerMS = [{[start],[],[{silent,false}]},
{[stop],[],[{silent,true},{return_trace}]}],
?line 1 = erlang:trace(Pid, true, [call,silent,return_to]),
?line erlang:trace_pattern({?MODULE,'_','_'},[],[local]),
?line 1 = erlang:trace_pattern({?MODULE,local2,1},
[{'_',[],[{return_trace}]}],
[local]),
?line 1 = erlang:trace_pattern({?MODULE,slave,1},false,[local]),
?line 1 = erlang:trace_pattern(Trigger,false,[local]),
?line 1 = erlang:trace_pattern(Trigger,TriggerMS,[meta]),
?line [1,1,1,0] = apply_slave(?MODULE,exported_wrap,[1]),
?line receive_no_next(17),
?line start = apply_slave(?MODULE, id, [start]),
?line ?CTT(Pid,{?MODULE,id,[start]}) = receive_next(),
?line [2,2,2,0] = apply_slave(?MODULE,exported_wrap,[2]),
?line ?CT(Pid,{?MODULE,exported_wrap,[2]}) = receive_next(),
?line ?CT(Pid,{?MODULE,exported,[2]}) = receive_next(),
?line ?CT(Pid,{?MODULE,local,[2]}) = receive_next(),
?line ?CT(Pid,{?MODULE,local2,[2]}) = receive_next(),
?line ?CT(Pid,{?MODULE,local_tail,[2]}) = receive_next(),
?line ?RF(Pid,{?MODULE,local2,1}, [2,0]) = receive_next(),
?line ?RT(Pid,{?MODULE,local,1}) = receive_next(),
?line ?RT(Pid,{?MODULE,exported,1}) = receive_next(),
?line ?RT(Pid,{?MODULE,slave,1}) = receive_next(),
?line stop = apply_slave(?MODULE, id, [stop]),
?line ?CTT(Pid,{?MODULE,id,[stop]}) = receive_next(),
?line ?RFT(Pid,{?MODULE,id,1}, stop) = receive_next(),
?line [3,3,3,0] = apply_slave(?MODULE,exported_wrap,[3]),
?line receive_no_next(17),
?line shutdown(),
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Trace target functions
loop(D1,D2,D3,0) ->
io:format("~p~n",[[D1,D2,D3]]),
0;
loop(D1,D2,D3,N) ->
max(N,loop(D1,D2,D3,N-1)).
max(A,B) when A > B ->
A;
max(_A,B) ->
B.
id(X) ->
X.
exported_wrap(Val) ->
exported(Val).
exported(Val) ->
[Val | local(Val)]. %% Non tail recursive local call
local(Val) ->
[Val | local2(Val)]. %% Non tail recursive local call
local2(Val) ->
local_tail(Val). %% Tail recursive call
local_tail(Val) ->
[Val , erlang:phash2(1,1)].
receiver(Msg) ->
erlang:phash2(1,1),
receive Msg -> Msg end.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Trace target process and utilities
slave(Sync) ->
Sync ! sync,
receive
{From,apply, M, F, A} ->
?line ?dbgformat("Apply: ~p:~p/~p (~p)~n",[M,F,length(A),A]),
?line Res = apply(M,F,A),
?line ?dbgformat("done Apply: ~p:~p/~p (~p)~n",[M,F,length(A),A]),
From ! {apply, Res},
erlang:trace_pattern({?MODULE,slave,1},false,[meta]),
slave(From);
{From, lambda, Fun} ->
Res = Fun(),
From ! {lambda, Res},
erlang:trace_pattern({?MODULE,slave,1},false,[meta]),
slave(From);
die ->
exit(normal)
end.
setup() ->
trace_off(),
Self = self(),
Pid = spawn(fun () -> slave(Self) end),
receive sync -> ok end,
put(slave,Pid),
Pid.
shutdown() ->
trace_off(),
Pid = get(slave),
case (catch is_process_alive(Pid)) of
true ->
Ref = erlang:monitor(process,Pid),
Pid ! die,
receive
{'DOWN',Ref,process,Pid,_} ->
ok
end;
_ ->
ok
end.
trace_off() ->
erlang:trace(all, false, [all]),
erlang:trace_pattern({'_','_','_'},false,[]),
erlang:trace_pattern({'_','_','_'},false,[local]),
erlang:trace_pattern({'_','_','_'},false,[meta]),
erlang:trace_pattern(on_load,false,[]),
erlang:trace_pattern(on_load,false,[local]),
erlang:trace_pattern(on_load,false,[meta]),
ok.
apply_slave_async(M,F,A) ->
Slave = get(slave),
Pid =
spawn(
fun () ->
Slave ! {self(),apply, M, F, A},
receive
{apply, _} ->
receive
sync ->
ok
end
end
end),
Pid.
apply_slave(M,F,A) ->
Pid = get(slave),
Pid ! {self(),apply, M, F, A},
receive
{apply, Res} ->
receive
sync ->
Res
end
end.
lambda_slave(Fun) ->
Pid = get(slave),
Pid ! {self(), lambda, Fun},
receive
{lambda, Res} ->
receive
sync ->
Res
end
end.
relay_n(0, _) ->
ok;
relay_n(N, Dest) ->
receive Msg ->
Dest ! {self(), Msg},
relay_n(N-1, Dest)
end.
receive_next() ->
receive_next(infinity).
receive_next(TO) ->
receive
M ->
M
after TO ->
?t:fail(timeout)
end.
receive_no_next(TO) ->
receive
M ->
?t:fail({unexpected_message, M})
after
TO ->
ok
end.
receive_next_bytag(Tag) ->
receive_next_bytag(Tag, infinity).
receive_next_bytag(Tag, TO) ->
receive
{Tag, Msg} ->
Msg
after
TO ->
timeout
end.
