1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
|
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2011. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%%-------------------------------------------------------------------
%%% File : z_SUITE.erl
%%% Author : Rickard Green <[email protected]>
%%% Description : Misc tests that should be run last
%%%
%%% Created : 15 Jul 2005 by Rickard Green <[email protected]>
%%%-------------------------------------------------------------------
-module(z_SUITE).
-author('[email protected]').
%-define(line_trace, 1).
-include_lib("common_test/include/ct.hrl").
-export([all/0, suite/0]).
-export([schedulers_alive/1, node_container_refc_check/1,
long_timers/1, pollset_size/1,
check_io_debug/1, get_check_io_info/0]).
suite() ->
[{ct_hooks,[ts_install_cth]},
{timetrap, {minutes, 5}}].
all() ->
[schedulers_alive, node_container_refc_check,
long_timers, pollset_size, check_io_debug].
%%%
%%% The test cases -------------------------------------------------------------
%%%
schedulers_alive(doc) -> ["Tests that all schedulers are actually used"];
schedulers_alive(suite) -> [];
schedulers_alive(Config) when is_list(Config) ->
?line Master = self(),
?line NoSchedulersOnline = erlang:system_flag(
schedulers_online,
erlang:system_info(schedulers)),
?line NoSchedulers = erlang:system_info(schedulers),
UsedScheds =
try
?line ?t:format("Number of schedulers configured: ~p~n", [NoSchedulers]),
?line case erlang:system_info(multi_scheduling) of
blocked ->
?line ct:fail(multi_scheduling_blocked);
disabled ->
?line ok;
enabled ->
?t:format("Testing blocking process exit~n"),
BF = fun () ->
blocked = erlang:system_flag(multi_scheduling,
block),
Master ! {self(), blocking},
receive after infinity -> ok end
end,
?line Blocker = spawn_link(BF),
?line Mon = erlang:monitor(process, Blocker),
?line receive {Blocker, blocking} -> ok end,
?line [Blocker]
= erlang:system_info(multi_scheduling_blockers),
?line unlink(Blocker),
?line exit(Blocker, kill),
?line receive {'DOWN', Mon, _, _, _} -> ok end,
?line enabled = erlang:system_info(multi_scheduling),
?line [] = erlang:system_info(multi_scheduling_blockers),
?line ok
end,
?t:format("Testing blocked~n"),
?line erlang:system_flag(multi_scheduling, block),
?line case erlang:system_info(multi_scheduling) of
enabled ->
?line ct:fail(multi_scheduling_enabled);
blocked ->
?line [Master] = erlang:system_info(multi_scheduling_blockers);
disabled -> ?line ok
end,
?line Ps = lists:map(
fun (_) ->
spawn_link(fun () ->
run_on_schedulers(none,
[],
Master)
end)
end,
lists:seq(1,NoSchedulers)),
?line receive after 1000 -> ok end,
?line {_, 1} = verify_all_schedulers_used({[],0}, 1),
?line lists:foreach(fun (P) ->
unlink(P),
exit(P, bang)
end,
Ps),
?line case erlang:system_flag(multi_scheduling, unblock) of
blocked -> ?line ct:fail(multi_scheduling_blocked);
disabled -> ?line ok;
enabled -> ?line ok
end,
erts_debug:set_internal_state(available_internal_state, true),
%% node_and_dist_references will use emulator interal thread blocking...
erts_debug:get_internal_state(node_and_dist_references),
erts_debug:set_internal_state(available_internal_state, false),
?t:format("Testing not blocked~n"),
?line Ps2 = lists:map(
fun (_) ->
spawn_link(fun () ->
run_on_schedulers(none,
[],
Master)
end)
end,
lists:seq(1,NoSchedulers)),
?line receive after 1000 -> ok end,
?line {_, NoSIDs} = verify_all_schedulers_used({[],0},NoSchedulers),
?line lists:foreach(fun (P) ->
unlink(P),
exit(P, bang)
end,
Ps2),
NoSIDs
after
NoSchedulers = erlang:system_flag(schedulers_online,
NoSchedulersOnline),
NoSchedulersOnline = erlang:system_info(schedulers_online)
end,
?line {comment, "Number of schedulers " ++ integer_to_list(UsedScheds)}.
run_on_schedulers(LastSID, SIDs, ReportTo) ->
case erlang:system_info(scheduler_id) of
LastSID ->
erlang:yield(),
run_on_schedulers(LastSID, SIDs, ReportTo);
SID ->
NewSIDs = case lists:member(SID, SIDs) of
true ->
SIDs;
false ->
ReportTo ! {scheduler_used, SID},
[SID | SIDs]
end,
erlang:yield(),
run_on_schedulers(SID, NewSIDs, ReportTo)
end.
wait_on_used_scheduler({SIDs, SIDsLen} = State) ->
receive
{scheduler_used, SID} ->
case lists:member(SID, SIDs) of
true ->
wait_on_used_scheduler(State);
false ->
?t:format("Scheduler ~p used~n", [SID]),
{[SID|SIDs], SIDsLen+1}
end
end.
verify_all_schedulers_used({UsedSIDs, UsedSIDsLen} = State, NoSchedulers) ->
?line case NoSchedulers of
UsedSIDsLen ->
?line State;
NoSchdlrs when NoSchdlrs < UsedSIDsLen ->
?line ct:fail({more_schedulers_used_than_exist,
{existing_schedulers, NoSchdlrs},
{used_schedulers, UsedSIDsLen},
{used_scheduler_ids, UsedSIDs}});
_ ->
?line NewState = wait_on_used_scheduler(State),
?line verify_all_schedulers_used(NewState, NoSchedulers)
end.
node_container_refc_check(doc) -> [];
node_container_refc_check(suite) -> [];
node_container_refc_check(Config) when is_list(Config) ->
?line node_container_SUITE:node_container_refc_check(node()),
?line ok.
long_timers(doc) ->
[];
long_timers(suite) ->
[];
long_timers(Config) when is_list(Config) ->
?line ok = long_timers_test:check_result().
pollset_size(doc) ->
[];
pollset_size(suite) ->
[];
pollset_size(Config) when is_list(Config) ->
?line Name = pollset_size_testcase_initial_state_holder,
?line Mon = erlang:monitor(process, Name),
?line (catch Name ! {get_initial_check_io_result, self()}),
?line InitChkIo = receive
{initial_check_io_result, ICIO} ->
?line erlang:demonitor(Mon, [flush]),
?line ICIO;
{'DOWN', Mon, _, _, Reason} ->
?line ct:fail({non_existing, Name, Reason})
end,
?line FinChkIo = get_check_io_info(),
?line io:format("Initial: ~p~nFinal: ~p~n", [InitChkIo, FinChkIo]),
?line InitPollsetSize = lists:keysearch(total_poll_set_size, 1, InitChkIo),
?line FinPollsetSize = lists:keysearch(total_poll_set_size, 1, FinChkIo),
HasGethost = case has_gethost() of true -> 1; _ -> 0 end,
?line case InitPollsetSize =:= FinPollsetSize of
true ->
case InitPollsetSize of
{value, {total_poll_set_size, Size}} ->
?line {comment,
"Pollset size: " ++ integer_to_list(Size)};
_ ->
?line {skipped,
"Pollset size information not available"}
end;
false ->
%% Somtimes we have fewer descriptors in the
%% pollset at the end than when we started, but
%% that is ok as long as there are at least 2
%% descriptors (dist listen socket and
%% epmd socket) in the pollset.
?line {value, {total_poll_set_size, InitSize}}
= InitPollsetSize,
?line {value, {total_poll_set_size, FinSize}}
= FinPollsetSize,
?line true = FinSize < (InitSize + HasGethost),
?line true = 2 =< FinSize,
?line {comment,
"Start pollset size: "
++ integer_to_list(InitSize)
++ " End pollset size: "
++ integer_to_list(FinSize)}
end.
check_io_debug(doc) ->
[];
check_io_debug(suite) ->
[];
check_io_debug(Config) when is_list(Config) ->
?line case lists:keysearch(name, 1, erlang:system_info(check_io)) of
{value, {name, erts_poll}} -> ?line check_io_debug_test();
_ -> ?line {skipped, "Not implemented in this emulator"}
end.
check_io_debug_test() ->
erlang:display(get_check_io_info()),
erts_debug:set_internal_state(available_internal_state, true),
{NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs} = CheckIoDebug
= erts_debug:get_internal_state(check_io_debug),
erts_debug:set_internal_state(available_internal_state, false),
HasGetHost = has_gethost(),
ct:log("check_io_debug: ~p~n"
"HasGetHost: ~p",[CheckIoDebug, HasGetHost]),
0 = NoErrorFds,
if
NoUsedFds == NoDrvSelStructs ->
ok;
HasGetHost andalso (NoUsedFds == (NoDrvSelStructs - 1)) ->
%% If the inet_gethost port is alive, we may have
%% one extra used fd that is not selected on.
%% This happens when the initial setup of the
%% port returns an EAGAIN
ok
end,
?line 0 = NoDrvEvStructs,
?line ok.
has_gethost() ->
has_gethost(erlang:ports()).
has_gethost([P|T]) ->
case erlang:port_info(P, name) of
{name,"inet_gethost"++_} ->
true;
_ ->
has_gethost(T)
end;
has_gethost([]) ->
false.
%%
%% Internal functions...
%%
display_check_io(ChkIo) ->
catch erlang:display('--- CHECK IO INFO ---'),
catch erlang:display(ChkIo),
catch erts_debug:set_internal_state(available_internal_state, true),
NoOfErrorFds = (catch element(1, erts_debug:get_internal_state(check_io_debug))),
catch erlang:display({'NoOfErrorFds', NoOfErrorFds}),
catch erts_debug:set_internal_state(available_internal_state, false),
catch erlang:display('--- CHECK IO INFO ---'),
ok.
get_check_io_info() ->
ChkIo = erlang:system_info(check_io),
PendUpdNo = case lists:keysearch(pending_updates, 1, ChkIo) of
{value, {pending_updates, PendNo}} ->
PendNo;
false ->
0
end,
{value, {active_fds, ActFds}} = lists:keysearch(active_fds, 1, ChkIo),
case {PendUpdNo, ActFds} of
{0, 0} ->
display_check_io(ChkIo),
ChkIo;
_ ->
receive after 100 -> ok end,
get_check_io_info()
end.
|
