summaryrefslogtreecommitdiff
path: root/nptl/tst-cond25.c
blob: be0bec484d780c6544d46b5df5078787e9cc69f9 (plain)
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
/* Verify that condition variables synchronized by PI mutexes don't hang on
   on cancellation.
   Copyright (C) 2012-2015 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
   <http://www.gnu.org/licenses/>.  */

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>

#define NUM 5
#define ITERS 10000
#define COUNT 100

typedef void *(*thr_func) (void *);

pthread_mutex_t mutex;
pthread_cond_t cond;

void cleanup (void *u)
{
  /* pthread_cond_wait should always return with the mutex locked.  The
     pthread_mutex_unlock implementation does not actually check whether we
     own the mutex for several mutex kinds, so check this explicitly.  */
  int ret = pthread_mutex_trylock (&mutex);
  if (ret != EDEADLK && ret != EBUSY)
    {
      printf ("mutex not locked in cleanup %d\n", ret);
      abort ();
    }
  if (pthread_mutex_unlock (&mutex))
    abort ();
}

void *
signaller (void *u)
{
  int i, ret = 0;
  void *tret = NULL;

  for (i = 0; i < ITERS; i++)
    {
      if ((ret = pthread_mutex_lock (&mutex)) != 0)
        {
	  tret = (void *)1;
	  printf ("signaller:mutex_lock failed: %s\n", strerror (ret));
	  goto out;
	}
      if ((ret = pthread_cond_signal (&cond)) != 0)
        {
	  tret = (void *)1;
	  printf ("signaller:signal failed: %s\n", strerror (ret));
	  goto unlock_out;
	}
      if ((ret = pthread_mutex_unlock (&mutex)) != 0)
        {
	  tret = (void *)1;
	  printf ("signaller:mutex_unlock failed: %s\n", strerror (ret));
	  goto out;
	}
      pthread_testcancel ();
    }

out:
  return tret;

unlock_out:
  if ((ret = pthread_mutex_unlock (&mutex)) != 0)
    printf ("signaller:mutex_unlock[2] failed: %s\n", strerror (ret));
  goto out;
}

void *
waiter (void *u)
{
  int i, ret = 0;
  void *tret = NULL;
  int seq = (uintptr_t) u;

  for (i = 0; i < ITERS / NUM; i++)
    {
      if ((ret = pthread_mutex_lock (&mutex)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("waiter[%u]:mutex_lock failed: %s\n", seq, strerror (ret));
	  goto out;
	}
      pthread_cleanup_push (cleanup, NULL);

      if ((ret = pthread_cond_wait (&cond, &mutex)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("waiter[%u]:wait failed: %s\n", seq, strerror (ret));
	  goto unlock_out;
	}

      if ((ret = pthread_mutex_unlock (&mutex)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("waiter[%u]:mutex_unlock failed: %s\n", seq, strerror (ret));
	  goto out;
	}
      pthread_cleanup_pop (0);
    }

out:
  puts ("waiter tests done");
  return tret;

unlock_out:
  if ((ret = pthread_mutex_unlock (&mutex)) != 0)
    printf ("waiter:mutex_unlock[2] failed: %s\n", strerror (ret));
  goto out;
}

void *
timed_waiter (void *u)
{
  int i, ret;
  void *tret = NULL;
  int seq = (uintptr_t) u;

  for (i = 0; i < ITERS / NUM; i++)
    {
      struct timespec ts;

      if ((ret = clock_gettime(CLOCK_REALTIME, &ts)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("%u:clock_gettime failed: %s\n", seq, strerror (errno));
	  goto out;
	}
      ts.tv_sec += 20;

      if ((ret = pthread_mutex_lock (&mutex)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("waiter[%u]:mutex_lock failed: %s\n", seq, strerror (ret));
	  goto out;
	}
      pthread_cleanup_push (cleanup, NULL);

      /* We should not time out either.  */
      if ((ret = pthread_cond_timedwait (&cond, &mutex, &ts)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("waiter[%u]:timedwait failed: %s\n", seq, strerror (ret));
	  goto unlock_out;
	}
      if ((ret = pthread_mutex_unlock (&mutex)) != 0)
        {
	  tret = (void *) (uintptr_t) 1;
	  printf ("waiter[%u]:mutex_unlock failed: %s\n", seq, strerror (ret));
	  goto out;
	}
      pthread_cleanup_pop (0);
    }

out:
  puts ("timed_waiter tests done");
  return tret;

unlock_out:
  if ((ret = pthread_mutex_unlock (&mutex)) != 0)
    printf ("waiter[%u]:mutex_unlock[2] failed: %s\n", seq, strerror (ret));
  goto out;
}

int
do_test_wait (thr_func f)
{
  pthread_t w[NUM];
  pthread_t s;
  pthread_mutexattr_t attr;
  int i, j, ret = 0;
  void *thr_ret;

  for (i = 0; i < COUNT; i++)
    {
      if ((ret = pthread_mutexattr_init (&attr)) != 0)
        {
	  printf ("mutexattr_init failed: %s\n", strerror (ret));
	  goto out;
	}

      if ((ret = pthread_mutexattr_setprotocol (&attr,
                                                PTHREAD_PRIO_INHERIT)) != 0)
        {
	  printf ("mutexattr_setprotocol failed: %s\n", strerror (ret));
	  goto out;
	}

      if ((ret = pthread_cond_init (&cond, NULL)) != 0)
        {
	  printf ("cond_init failed: %s\n", strerror (ret));
	  goto out;
	}

      if ((ret = pthread_mutex_init (&mutex, &attr)) != 0)
        {
	  printf ("mutex_init failed: %s\n", strerror (ret));
	  goto out;
	}

      for (j = 0; j < NUM; j++)
        if ((ret = pthread_create (&w[j], NULL,
                                   f, (void *) (uintptr_t) j)) != 0)
	  {
	    printf ("waiter[%d]: create failed: %s\n", j, strerror (ret));
	    goto out;
	  }

      if ((ret = pthread_create (&s, NULL, signaller, NULL)) != 0)
        {
	  printf ("signaller: create failed: %s\n", strerror (ret));
	  goto out;
	}

      for (j = 0; j < NUM; j++)
        {
          pthread_cancel (w[j]);

          if ((ret = pthread_join (w[j], &thr_ret)) != 0)
	    {
	      printf ("waiter[%d]: join failed: %s\n", j, strerror (ret));
	      goto out;
	    }

          if (thr_ret != NULL && thr_ret != PTHREAD_CANCELED)
	    {
	      ret = 1;
	      goto out;
	    }
        }

      /* The signalling thread could have ended before it was cancelled.  */
      pthread_cancel (s);

      if ((ret = pthread_join (s, &thr_ret)) != 0)
        {
	  printf ("signaller: join failed: %s\n", strerror (ret));
	  goto out;
	}

      if (thr_ret != NULL && thr_ret != PTHREAD_CANCELED)
        {
          ret = 1;
          goto out;
        }
    }

out:
  return ret;
}

int
do_test (int argc, char **argv)
{
  int ret = do_test_wait (waiter);

  if (ret)
    return ret;

  return do_test_wait (timed_waiter);
}

#define TIMEOUT 5
#include "../test-skeleton.c"