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
334
335
336
337
|
/* Copyright (C) 2005-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
static pthread_mutex_t m1;
static pthread_mutex_t m2;
static pthread_barrier_t b;
#ifndef LOCK
# define LOCK(m) pthread_mutex_lock (m)
#endif
static void *
tf (void *arg)
{
long int round = (long int) arg;
if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0)
{
printf ("%ld: setcancelstate failed\n", round);
exit (1);
}
int e = LOCK (&m1);
if (e != 0)
{
printf ("%ld: child: mutex_lock m1 failed with error %d\n", round, e);
exit (1);
}
e = LOCK (&m2);
if (e != 0)
{
printf ("%ld: child: mutex_lock m2 failed with error %d\n", round, e);
exit (1);
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%ld: child: 1st barrier_wait failed\n", round);
exit (1);
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%ld: child: 2nd barrier_wait failed\n", round);
exit (1);
}
pthread_testcancel ();
printf ("%ld: testcancel returned\n", round);
exit (1);
}
static int
do_test (void)
{
#ifdef PREPARE_TMO
PREPARE_TMO;
#endif
pthread_mutexattr_t a;
if (pthread_mutexattr_init (&a) != 0)
{
puts ("mutexattr_init failed");
return 1;
}
if (pthread_mutexattr_setrobust (&a, PTHREAD_MUTEX_ROBUST_NP) != 0)
{
puts ("mutexattr_setrobust failed");
return 1;
}
#ifdef ENABLE_PI
if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
{
puts ("pthread_mutexattr_setprotocol failed");
return 1;
}
else
{
int e = pthread_mutex_init (&m1, &a);
if (e == ENOTSUP)
{
puts ("PI robust mutexes not supported");
return 0;
}
else if (e != 0)
{
puts ("mutex_init m1 failed");
return 1;
}
pthread_mutex_destroy (&m1);
}
#endif
#ifndef NOT_CONSISTENT
if (pthread_mutex_init (&m1, &a) != 0)
{
puts ("mutex_init m1 failed");
return 1;
}
if (pthread_mutex_init (&m2, &a) != 0)
{
puts ("mutex_init m2 failed");
return 1;
}
#endif
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
for (long int round = 1; round < 5; ++round)
{
#ifdef NOT_CONSISTENT
if (pthread_mutex_init (&m1 , &a) != 0)
{
puts ("mutex_init m1 failed");
return 1;
}
if (pthread_mutex_init (&m2 , &a) != 0)
{
puts ("mutex_init m2 failed");
return 1;
}
#endif
pthread_t th;
if (pthread_create (&th, NULL, tf, (void *) round) != 0)
{
printf ("%ld: create failed\n", round);
return 1;
}
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%ld: parent: 1st barrier_wait failed\n", round);
return 1;
}
if (pthread_cancel (th) != 0)
{
printf ("%ld: cancel failed\n", round);
return 1;
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%ld: parent: 2nd barrier_wait failed\n", round);
return 1;
}
#ifndef AFTER_JOIN
if (round & 1)
#endif
{
void *res;
if (pthread_join (th, &res) != 0)
{
printf ("%ld: join failed\n", round);
return 1;
}
if (res != PTHREAD_CANCELED)
{
printf ("%ld: thread not canceled\n", round);
return 1;
}
}
e = LOCK (&m1);
if (e == 0)
{
printf ("%ld: parent: mutex_lock m1 succeeded\n", round);
return 1;
}
if (e != EOWNERDEAD)
{
printf ("%ld: parent: mutex_lock m1 returned wrong code\n", round);
return 1;
}
e = LOCK (&m2);
if (e == 0)
{
printf ("%ld: parent: mutex_lock m2 succeeded\n", round);
return 1;
}
if (e != EOWNERDEAD)
{
printf ("%ld: parent: mutex_lock m2 returned wrong code\n", round);
return 1;
}
#ifndef AFTER_JOIN
if ((round & 1) == 0)
{
void *res;
if (pthread_join (th, &res) != 0)
{
printf ("%ld: join failed\n", round);
return 1;
}
if (res != PTHREAD_CANCELED)
{
printf ("%ld: thread not canceled\n", round);
return 1;
}
}
#endif
#ifndef NOT_CONSISTENT
e = pthread_mutex_consistent (&m1);
if (e != 0)
{
printf ("%ld: mutex_consistent m1 failed with error %d\n", round, e);
return 1;
}
e = pthread_mutex_consistent (&m2);
if (e != 0)
{
printf ("%ld: mutex_consistent m2 failed with error %d\n", round, e);
return 1;
}
#endif
e = pthread_mutex_unlock (&m1);
if (e != 0)
{
printf ("%ld: mutex_unlock m1 failed with %d\n", round, e);
return 1;
}
e = pthread_mutex_unlock (&m2);
if (e != 0)
{
printf ("%ld: mutex_unlock m2 failed with %d\n", round, e);
return 1;
}
#ifdef NOT_CONSISTENT
e = LOCK (&m1);
if (e == 0)
{
printf ("%ld: locking inconsistent mutex m1 succeeded\n", round);
return 1;
}
if (e != ENOTRECOVERABLE)
{
printf ("%ld: locking inconsistent mutex m1 failed with error %d\n",
round, e);
return 1;
}
if (pthread_mutex_destroy (&m1) != 0)
{
puts ("mutex_destroy m1 failed");
return 1;
}
e = LOCK (&m2);
if (e == 0)
{
printf ("%ld: locking inconsistent mutex m2 succeeded\n", round);
return 1;
}
if (e != ENOTRECOVERABLE)
{
printf ("%ld: locking inconsistent mutex m2 failed with error %d\n",
round, e);
return 1;
}
if (pthread_mutex_destroy (&m2) != 0)
{
puts ("mutex_destroy m2 failed");
return 1;
}
#endif
}
#ifndef NOT_CONSISTENT
if (pthread_mutex_destroy (&m1) != 0)
{
puts ("mutex_destroy m1 failed");
return 1;
}
if (pthread_mutex_destroy (&m2) != 0)
{
puts ("mutex_destroy m2 failed");
return 1;
}
#endif
if (pthread_mutexattr_destroy (&a) != 0)
{
puts ("mutexattr_destroy failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
