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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2011. 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_call_time_SUITE).
+
+%% Exported end user tests
+
+-export([seq/3, seq_r/3]).
+-export([loaded/1, a_function/1, a_called_function/1, dec/1, nif_dec/1]).
+
+-define(US_ERROR, 10000).
+-define(R_ERROR, 0.8).
+-define(SINGLE_CALL_US_TIME, 10).
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% 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,{_,_,_}}).
+
+-ifdef(debug).
+-define(dbgformat(A,B),io:format(A,B)).
+-else.
+-define(dbgformat(A,B),noop).
+-endif.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+-include_lib("test_server/include/test_server.hrl").
+
+%% 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, end_per_testcase/2, not_run/1]).
+-export([basic/1, on_and_off/1, info/1,
+ pause_and_restart/1, scheduling/1, called_function/1, combo/1,
+ bif/1, nif/1]).
+
+init_per_testcase(_Case, Config) ->
+ ?line Dog=test_server:timetrap(test_server:seconds(400)),
+ erlang:trace_pattern({'_','_','_'}, false, [local,meta,call_time,call_count]),
+ erlang:trace_pattern(on_load, false, [local,meta,call_time,call_count]),
+ timer:now_diff(now(),now()),
+ [{watchdog, Dog}|Config].
+
+end_per_testcase(_Case, Config) ->
+ erlang:trace_pattern({'_','_','_'}, false, [local,meta,call_time,call_count]),
+ erlang:trace_pattern(on_load, false, [local,meta,call_time,call_count]),
+ erlang:trace(all, false, [all]),
+ Dog=?config(watchdog, Config),
+ test_server:timetrap_cancel(Dog),
+ ok.
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+ case test_server:is_native(trace_call_time_SUITE) of
+ true -> [not_run];
+ false ->
+ [basic, on_and_off, info, pause_and_restart, scheduling,
+ combo, bif, nif, called_function]
+ 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 call count trace"];
+basic(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 1000,
+ %%
+ ?line 1 = erlang:trace_pattern({?MODULE,seq, '_'}, true, [call_time]),
+ ?line 2 = erlang:trace_pattern({?MODULE,seq_r,'_'}, true, [call_time]),
+ ?line Pid = setup(),
+ ?line {L, T1} = execute(Pid, fun() -> seq(1, M, fun(X) -> (X+1) end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid, M, 0, 0}], T1),
+ ?line ok = check_trace_info({?MODULE, seq_r, 3}, [], none),
+
+ ?line {Lr, T2} = execute(Pid, fun() -> seq_r(1, M, fun(X) -> (X+1) end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid, M, 0, 0}], T1),
+ ?line ok = check_trace_info({?MODULE, seq_r, 3}, [{Pid, 1, 0, 0}], T2/M),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, [{Pid, M, 0, 0}], T2),
+ ?line L = lists:reverse(Lr),
+
+ %%
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line Pid ! quit,
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+on_and_off(suite) ->
+ [];
+on_and_off(doc) ->
+ ["Tests turning trace parameters on and off"];
+on_and_off(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 100,
+ %%
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, true, [call_time]),
+ ?line Pid = setup(),
+ ?line {L, T1} = execute(Pid, {?MODULE, seq, [1, M, fun(X) -> X+1 end]}),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid, M, 0, 0}], T1),
+
+ ?line N = erlang:trace_pattern({?MODULE,'_','_'}, true, [call_time]),
+ ?line {L, T2} = execute(Pid, fun() -> seq(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid, M, 0, 0}], T2),
+
+ ?line P = erlang:trace_pattern({'_','_','_'}, true, [call_time]),
+ ?line {L, T3} = execute(Pid, fun() -> seq(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid, M, 0, 0}], T3),
+
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, false, [call_time]),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, false, none),
+ ?line {L, _T4} = execute(Pid, fun() -> seq(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, false, none),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, [], none),
+ ?line {Lr, T5} = execute(Pid, fun() -> seq_r(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, [{Pid,M,0,0}], T5),
+
+ ?line N = erlang:trace_pattern({?MODULE,'_','_'}, false, [call_time]),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, false, none),
+ ?line {Lr, _T6} = execute(Pid, fun() -> seq_r(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, false, none),
+ ?line L = lists:reverse(Lr),
+ %%
+ ?line Pid ! quit,
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+info(suite) ->
+ [];
+info(doc) ->
+ ["Tests the trace_info BIF"];
+info(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ %%
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,3}, true, [call_time]),
+ ?line {call_time,[]} = erlang:trace_info({?MODULE,seq,3}, call_time),
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, pause, [call_time]),
+ ?line {call_time,[]} = erlang:trace_info({?MODULE,seq,3}, call_time),
+ ?line {all,[_|_]=L} = erlang:trace_info({?MODULE,seq,3}, all),
+ ?line {value,{call_time,[]}} = lists:keysearch(call_time, 1, L),
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, restart, [call_time]),
+ ?line {call_time,[]} = erlang:trace_info({?MODULE,seq,3}, call_time),
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, false, [call_time]),
+ ?line {call_time,false} = erlang:trace_info({?MODULE,seq,3}, call_time),
+ ?line {all,false} = erlang:trace_info({?MODULE,seq,3}, all),
+ %%
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+pause_and_restart(suite) ->
+ [];
+pause_and_restart(doc) ->
+ ["Tests pausing and restarting call time counters"];
+pause_and_restart(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 100,
+ ?line Pid = setup(),
+ %%
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, true, [call_time]),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [], none),
+ ?line {L, T1} = execute(Pid, fun() -> seq(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid,M,0,0}], T1),
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, pause, [call_time]),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid,M,0,0}], T1),
+ ?line {L, T2} = execute(Pid, fun() -> seq(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid,M,0,0}], T2),
+ ?line 1 = erlang:trace_pattern({?MODULE,seq,'_'}, restart, [call_time]),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [], none),
+ ?line {L, T3} = execute(Pid, fun() -> seq(1, M, fun(X) -> X+1 end) end),
+ ?line ok = check_trace_info({?MODULE, seq, 3}, [{Pid,M,0,0}], T3),
+ %%
+ ?line Pid ! quit,
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+scheduling(suite) ->
+ [];
+scheduling(doc) ->
+ ["Tests in/out scheduling of call time counters"];
+scheduling(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 1000000,
+ ?line Np = erlang:system_info(schedulers_online),
+ ?line F = 12,
+
+ %% setup load processes
+ %% (single, no internal calls)
+
+ ?line erlang:trace_pattern({?MODULE,loaded,1}, true, [call_time]),
+
+ ?line Pids = [setup() || _ <- lists:seq(1, F*Np)],
+ ?line {_Ls,T1} = execute(Pids, {?MODULE,loaded,[M]}),
+ ?line [Pid ! quit || Pid <- Pids],
+
+ %% logic dictates that each process will get ~ 1/F of the schedulers time
+
+ ?line {call_time, CT} = erlang:trace_info({?MODULE,loaded,1}, call_time),
+
+ ?line lists:foreach(fun (Pid) ->
+ ?line ok = case check_process_time(lists:keysearch(Pid, 1, CT), M, F, T1) of
+ schedule_time_error ->
+ test_server:comment("Warning: Failed time ratio"),
+ ok;
+ Other -> Other
+ end
+ end, Pids),
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+combo(suite) ->
+ [];
+combo(doc) ->
+ ["Tests combining local call trace and meta trace with call time trace"];
+combo(Config) when is_list(Config) ->
+ ?line Self = self(),
+ ?line Nbc = 3,
+ ?line MetaMs = [{'_',[],[{return_trace}]}],
+ ?line Flags = lists:sort([call, return_to]),
+ ?line LocalTracer = spawn_link(fun () -> relay_n(5 + Nbc + 3, Self) end),
+ ?line MetaTracer = spawn_link(fun () -> relay_n(9 + Nbc + 3, Self) end),
+ ?line 2 = erlang:trace_pattern({?MODULE,seq_r,'_'}, [], [local]),
+ ?line 2 = erlang:trace_pattern({?MODULE,seq_r,'_'}, true, [call_time]),
+ ?line 2 = erlang:trace_pattern({?MODULE,seq_r,'_'}, MetaMs, [{meta,MetaTracer}]),
+ ?line 2 = erlang:trace_pattern({?MODULE,seq_r,'_'}, true, [call_count]),
+
+ % bifs
+ ?line 2 = erlang:trace_pattern({erlang, term_to_binary, '_'}, [], [local]),
+ ?line 2 = erlang:trace_pattern({erlang, term_to_binary, '_'}, true, [call_time]),
+ ?line 2 = erlang:trace_pattern({erlang, term_to_binary, '_'}, MetaMs, [{meta,MetaTracer}]),
+ %% not implemented
+ %?line 2 = erlang:trace_pattern({erlang, term_to_binary, '_'}, true, [call_count]),
+
+ ?line 1 = erlang:trace(Self, true, [{tracer,LocalTracer} | Flags]),
+ %%
+ ?line {traced,local} =
+ erlang:trace_info({?MODULE,seq_r,3}, traced),
+ ?line {match_spec,[]} =
+ erlang:trace_info({?MODULE,seq_r,3}, match_spec),
+ ?line {meta,MetaTracer} =
+ erlang:trace_info({?MODULE,seq_r,3}, meta),
+ ?line {meta_match_spec,MetaMs} =
+ erlang:trace_info({?MODULE,seq_r,3}, meta_match_spec),
+ ?line ok = check_trace_info({?MODULE, seq_r, 3}, [], none),
+
+ %% check empty trace_info for ?MODULE:seq_r/3
+ ?line {all,[_|_]=TraceInfo} = erlang:trace_info({?MODULE,seq_r,3}, all),
+ ?line {value,{traced,local}} = lists:keysearch(traced, 1, TraceInfo),
+ ?line {value,{match_spec,[]}} = lists:keysearch(match_spec, 1, TraceInfo),
+ ?line {value,{meta,MetaTracer}} = lists:keysearch(meta, 1, TraceInfo),
+ ?line {value,{meta_match_spec,MetaMs}} = lists:keysearch(meta_match_spec, 1, TraceInfo),
+ ?line {value,{call_count,0}} = lists:keysearch(call_count, 1, TraceInfo),
+ ?line {value,{call_time,[]}} = lists:keysearch(call_time, 1, TraceInfo),
+
+ %% check empty trace_info for erlang:term_to_binary/1
+ ?line {all, [_|_] = TraceInfoBif} = erlang:trace_info({erlang, term_to_binary, 1}, all),
+ ?line {value,{traced,local}} = lists:keysearch(traced, 1, TraceInfoBif),
+ ?line {value,{match_spec,[]}} = lists:keysearch(match_spec, 1, TraceInfoBif),
+ ?line {value,{meta, MetaTracer}} = lists:keysearch(meta, 1, TraceInfoBif),
+ ?line {value,{meta_match_spec,MetaMs}} = lists:keysearch(meta_match_spec, 1, TraceInfoBif),
+ %% not implemented
+ ?line {value,{call_count,false}} = lists:keysearch(call_count, 1, TraceInfoBif),
+ %?line {value,{call_count,0}} = lists:keysearch(call_count, 1, TraceInfoBif),
+ ?line {value,{call_time,[]}} = lists:keysearch(call_time, 1, TraceInfoBif),
+
+ %%
+ ?line [3,2,1] = seq_r(1, 3, fun(X) -> X+1 end),
+ ?line T0 = now(),
+ ?line with_bif(Nbc),
+ ?line T1 = now(),
+ ?line TimeB = timer:now_diff(T1,T0),
+ %%
+
+ ?line List = collect(100),
+ ?line {MetaR, LocalR} =
+ lists:foldl(
+ fun ({P,X}, {M,L}) when P == MetaTracer ->
+ {[X|M],L};
+ ({P,X}, {M,L}) when P == LocalTracer ->
+ {M,[X|L]}
+ end,
+ {[],[]},
+ List),
+ ?line Meta = lists:reverse(MetaR),
+ ?line Local = lists:reverse(LocalR),
+
+ ?line [?CTT(Self,{?MODULE,seq_r,[1,3,_]}),
+ ?CTT(Self,{?MODULE,seq_r,[1,3,_,[]]}),
+ ?CTT(Self,{?MODULE,seq_r,[2,3,_,[1]]}),
+ ?CTT(Self,{?MODULE,seq_r,[3,3,_,[2,1]]}),
+ ?RFT(Self,{?MODULE,seq_r,4},[3,2,1]),
+ ?RFT(Self,{?MODULE,seq_r,4},[3,2,1]),
+ ?RFT(Self,{?MODULE,seq_r,4},[3,2,1]),
+ ?RFT(Self,{?MODULE,seq_r,3},[3,2,1]),
+ ?CTT(Self,{erlang,term_to_binary,[3]}), % bif
+ ?RFT(Self,{erlang,term_to_binary,1},<<131,97,3>>),
+ ?CTT(Self,{erlang,term_to_binary,[2]}),
+ ?RFT(Self,{erlang,term_to_binary,1},<<131,97,2>>)
+ ] = Meta,
+
+ ?line [?CT(Self,{?MODULE,seq_r,[1,3,_]}),
+ ?CT(Self,{?MODULE,seq_r,[1,3,_,[]]}),
+ ?CT(Self,{?MODULE,seq_r,[2,3,_,[1]]}),
+ ?CT(Self,{?MODULE,seq_r,[3,3,_,[2,1]]}),
+ ?RT(Self,{?MODULE,combo,1}),
+ ?CT(Self,{erlang,term_to_binary,[3]}), % bif
+ ?RT(Self,{?MODULE,with_bif,1}),
+ ?CT(Self,{erlang,term_to_binary,[2]}),
+ ?RT(Self,{?MODULE,with_bif,1})
+ ] = Local,
+
+ ?line ok = check_trace_info({?MODULE, seq_r, 3}, [{Self,1,0,0}], 1),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, [{Self,3,0,0}], 1),
+ ?line ok = check_trace_info({?MODULE, seq_r, 3}, [{Self,1,0,0}], 1),
+ ?line ok = check_trace_info({?MODULE, seq_r, 4}, [{Self,3,0,0}], 1),
+ ?line ok = check_trace_info({erlang, term_to_binary, 1}, [{self(), Nbc - 1, 0, 0}], TimeB),
+ %%
+ ?line erlang:trace_pattern({'_','_','_'}, false, [local,meta,call_time]),
+ ?line erlang:trace_pattern(on_load, false, [local,meta,call_time]),
+ ?line erlang:trace(all, false, [all]),
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+bif(suite) ->
+ [];
+bif(doc) ->
+ ["Tests tracing of bifs"];
+bif(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 1000000,
+ %%
+ ?line 2 = erlang:trace_pattern({erlang, binary_to_term, '_'}, true, [call_time]),
+ ?line 2 = erlang:trace_pattern({erlang, term_to_binary, '_'}, true, [call_time]),
+ ?line Pid = setup(),
+ ?line {L, T1} = execute(Pid, fun() -> with_bif(M) end),
+
+ ?line ok = check_trace_info({erlang, binary_to_term, 1}, [{Pid, M - 1, 0, 0}], T1/2),
+ ?line ok = check_trace_info({erlang, term_to_binary, 1}, [{Pid, M - 1, 0, 0}], T1/2),
+
+ % disable term2binary
+
+ ?line 2 = erlang:trace_pattern({erlang, term_to_binary, '_'}, false, [call_time]),
+
+ ?line {L, T2} = execute(Pid, fun() -> with_bif(M) end),
+
+ ?line ok = check_trace_info({erlang, binary_to_term, 1}, [{Pid, M*2 - 2, 0, 0}], T1/2 + T2),
+ ?line ok = check_trace_info({erlang, term_to_binary, 1}, false, none),
+
+ %%
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line Pid ! quit,
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+nif(suite) ->
+ [];
+nif(doc) ->
+ ["Tests tracing of nifs"];
+nif(Config) when is_list(Config) ->
+ load_nif(Config),
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 1000000,
+ %%
+ ?line 1 = erlang:trace_pattern({?MODULE, nif_dec, '_'}, true, [call_time]),
+ ?line 1 = erlang:trace_pattern({?MODULE, with_nif, '_'}, true, [call_time]),
+ ?line Pid = setup(),
+ ?line {_, T1} = execute(Pid, fun() -> with_nif(M) end),
+
+ % the nif is called M - 1 times, the last time the function with 'with_nif'
+ % returns ok and does not call the nif.
+ ?line ok = check_trace_info({?MODULE, nif_dec, 1}, [{Pid, M-1, 0, 0}], T1/5*4),
+ ?line ok = check_trace_info({?MODULE, with_nif, 1}, [{Pid, M, 0, 0}], T1/5),
+
+ %%
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line Pid ! quit,
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+called_function(suite) ->
+ [];
+called_function(doc) ->
+ ["Tests combining nested function calls and that the time accumulates to the right function"];
+called_function(Config) when is_list(Config) ->
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ?line M = 2100,
+ ?line Pid = setup(),
+ %%
+ ?line 1 = erlang:trace_pattern({?MODULE,a_function,'_'}, true, [call_time]),
+ ?line {L, T1} = execute(Pid, {?MODULE, a_function, [M]}),
+ ?line ok = check_trace_info({?MODULE, a_function, 1}, [{Pid, M, 0, 0}], T1),
+
+ ?line 1 = erlang:trace_pattern({?MODULE,a_called_function,'_'}, true, [call_time]),
+ ?line {L, T2} = execute(Pid, {?MODULE, a_function, [M]}),
+ ?line ok = check_trace_info({?MODULE, a_function, 1}, [{Pid, M+M, 0, 0}], T1 + M*?SINGLE_CALL_US_TIME),
+ ?line ok = check_trace_info({?MODULE, a_called_function, 1}, [{Pid, M, 0, 0}], T2),
+
+
+ ?line 1 = erlang:trace_pattern({?MODULE,dec,'_'}, true, [call_time]),
+ ?line {L, T3} = execute(Pid, {?MODULE, a_function, [M]}),
+ ?line ok = check_trace_info({?MODULE, a_function, 1}, [{Pid, M+M+M, 0, 0}], T1 + (M+M)*?SINGLE_CALL_US_TIME),
+ ?line ok = check_trace_info({?MODULE, a_called_function, 1}, [{Pid, M+M, 0, 0}], T2 + M*?SINGLE_CALL_US_TIME ),
+ ?line ok = check_trace_info({?MODULE, dec, 1}, [{Pid, M, 0, 0}], T3),
+
+ ?line Pid ! quit,
+ ?line P = erlang:trace_pattern({'_','_','_'}, false, [call_time]),
+ ok.
+
+%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% The Tests
+%%%
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Local helpers
+
+
+load_nif(Config) ->
+ ?line Path = ?config(data_dir, Config),
+ ?line ok = erlang:load_nif(filename:join(Path,"trace_nif"), 0).
+
+
+%% Stack recursive seq
+seq(Stop, Stop, Succ) when is_function(Succ) ->
+ [Stop];
+seq(Start, Stop, Succ) when is_function(Succ) ->
+ [Start | seq(Succ(Start), Stop, Succ)].
+
+
+a_function(1) -> a_called_function(1);
+a_function(N) when N > 1 -> a_function(a_called_function(N)).
+
+a_called_function(N) -> dec(N).
+
+with_bif(1) -> ok;
+with_bif(N) ->
+ with_bif(erlang:binary_to_term(erlang:term_to_binary(N)) - 1).
+
+with_nif(0) -> error;
+with_nif(1) -> ok;
+with_nif(N) ->
+ with_nif(?MODULE:nif_dec(N)).
+
+
+nif_dec(_) -> 0.
+
+dec(N) ->
+ loaded(10000),
+ N - 1.
+
+loaded(N) when N > 1 -> loaded(N - 1);
+loaded(_) -> 5.
+
+
+%% Tail recursive seq, result list is reversed
+seq_r(Start, Stop, Succ) when is_function(Succ) ->
+ seq_r(Start, Stop, Succ, []).
+
+seq_r(Stop, Stop, _, R) ->
+ [Stop | R];
+seq_r(Start, Stop, Succ, R) ->
+ seq_r(Succ(Start), Stop, Succ, [Start | R]).
+
+% Check call time tracing data and print mismatches
+check_trace_info(Mfa, [{Pid, C,_,_}] = Expect, Time) ->
+ case erlang:trace_info(Mfa, call_time) of
+ % Time tests are somewhat problematic. We want to know if Time (EXPECTED_TIME) and S*1000000 + Us (ACTUAL_TIME)
+ % is the same.
+ % If the ratio EXPECTED_TIME/ACTUAL_TIME is ~ 1 or if EXPECTED_TIME - ACTUAL_TIME is near zero, the test is ok.
+ {call_time,[{Pid,C,S,Us}]} when S >= 0, Us >= 0, abs(1 - Time/(S*1000000 + Us)) < ?R_ERROR; abs(Time - S*1000000 - Us) < ?US_ERROR ->
+ ok;
+ {call_time,[{Pid,C,S,Us}]} ->
+ Sum = S*1000000 + Us,
+ io:format("Expected ~p -> {call_time, ~p (Time ~p us)}~n - got ~w s. ~w us. = ~w us. - ~w -> delta ~w (ratio ~.2f, should be 1.0)~n",
+ [Mfa, Expect, Time, S, Us, Sum, Time, Sum - Time, Time/Sum]),
+ time_error;
+ Other ->
+ io:format("Expected ~p -> {call_time, ~p (Time ~p us)}~n - got ~p~n", [ Mfa, Expect, Time, Other]),
+ time_count_error
+ end;
+check_trace_info(Mfa, Expect, _) ->
+ case erlang:trace_info(Mfa, call_time) of
+ {call_time, Expect} ->
+ ok;
+ Other ->
+ io:format("Expected ~p -> {call_time, ~p}~n - got ~p~n", [Mfa, Expect, Other]),
+ result_not_expected_error
+ end.
+
+
+%check process time
+check_process_time({value,{Pid, M, S, Us}}, M, F, Time) ->
+ ?line Sum = S*1000000 + Us,
+ if
+ abs(1 - (F/(Time/Sum))) < ?R_ERROR ->
+ ok;
+ true ->
+ io:format("- Pid ~p, Got ratio ~.2f, expected ratio ~w~n", [Pid, Time/Sum,F]),
+ schedule_time_error
+ end;
+check_process_time(Other, M, _, _) ->
+ io:format(" - Got ~p, expected count ~w~n", [Other, M]),
+ error.
+
+
+
+%% Message relay process
+relay_n(0, _) ->
+ ok;
+relay_n(N, Dest) ->
+ receive Msg ->
+ Dest ! {self(), Msg},
+ relay_n(N-1, Dest)
+ end.
+
+
+
+%% Collect received messages
+collect(Time) ->
+ Ref = erlang:start_timer(Time, self(), done),
+ L = lists:reverse(collect([], Ref)),
+ ?dbgformat("Got: ~p~n",[L]),
+ L.
+
+collect(A, 0) ->
+ receive
+ Mess ->
+ collect([Mess | A], 0)
+ after 0 ->
+ A
+ end;
+collect(A, Ref) ->
+ receive
+ {timeout, Ref, done} ->
+ collect(A, 0);
+ Mess ->
+ collect([Mess | A], Ref)
+ end.
+
+setup() ->
+ Pid = spawn_link(fun() -> loop() end),
+ ?line 1 = erlang:trace(Pid, true, [call]),
+ Pid.
+
+execute(Pids, Mfa) when is_list(Pids) ->
+ T0 = now(),
+ [P ! {self(), execute, Mfa} || P <- Pids],
+ As = [receive {P, answer, Answer} -> Answer end || P <- Pids],
+ T1 = now(),
+ {As, timer:now_diff(T1,T0)};
+execute(P, Mfa) ->
+ T0 = now(),
+ P ! {self(), execute, Mfa},
+ A = receive {P, answer, Answer} -> Answer end,
+ T1 = now(),
+ {A, timer:now_diff(T1,T0)}.
+
+
+
+loop() ->
+ receive
+ quit ->
+ ok;
+ {Pid, execute, Fun } when is_function(Fun) ->
+ Pid ! {self(), answer, erlang:apply(Fun, [])},
+ loop();
+ {Pid, execute, {M, F, A}} ->
+ Pid ! {self(), answer, erlang:apply(M, F, A)},
+ loop()
+ end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 07:02:00 +0000