aboutsummaryrefslogtreecommitdiff
path: root/rt/tst-mqueue8.c
blob: 66d304c62855e8e1ef9e823e32ad92d2ee31fdeb (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
/* Copyright (C) 2004-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.

   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 <mqueue.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if _POSIX_THREADS
# include <pthread.h>

static pthread_barrier_t b;

/* Cleanup handling test.  */
static int cl_called;

static void
cl (void *arg)
{
  ++cl_called;
}

#define TF_MQ_RECEIVE		0L
#define TF_MQ_TIMEDRECEIVE	1L
#define TF_MQ_SEND		2L
#define TF_MQ_TIMEDSEND		3L

static const char *names[]
  = { "mq_receive", "mq_timedreceive", "mq_send", "mq_timedsend" };

static mqd_t q;
static struct timespec never;

static void *
tf (void *arg)
{
  int r = pthread_barrier_wait (&b);
  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
    {
      puts ("tf: barrier_wait failed");
      exit (1);
    }

  pthread_cleanup_push (cl, NULL);

  char c = ' ';

  switch ((long) arg)
    {
    case TF_MQ_SEND:
      TEMP_FAILURE_RETRY (mq_send (q, &c, 1, 1));
      break;
    case TF_MQ_TIMEDSEND:
      TEMP_FAILURE_RETRY (mq_timedsend (q, &c, 1, 1, &never));
      break;
    case TF_MQ_RECEIVE:
      TEMP_FAILURE_RETRY (mq_receive (q, &c, 1, NULL));
      break;
    case TF_MQ_TIMEDRECEIVE:
      TEMP_FAILURE_RETRY (mq_timedreceive (q, &c, 1, NULL, &never));
      break;
    }

  pthread_cleanup_pop (0);

  printf ("tf: %s returned\n", names[(long) arg]);

  exit (1);
}

#define TEST_FUNCTION do_test ()
static int
do_test (void)
{
  char name[sizeof "/tst-mqueue8-" + sizeof (pid_t) * 3];
  snprintf (name, sizeof (name), "/tst-mqueue8-%u", getpid ());

  struct mq_attr attr = { .mq_maxmsg = 1, .mq_msgsize = 1 };
  q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);

  if (q == (mqd_t) -1)
    {
      printf ("mq_open failed with: %m\n");
      return 0;
    }

  if (mq_unlink (name) != 0)
    {
      printf ("mq_unlink failed with: %m\n");
      return 1;
    }

  if (pthread_barrier_init (&b, NULL, 2) != 0)
    {
      puts ("barrier_init failed");
      return 1;
    }

  if (clock_gettime (CLOCK_REALTIME, &never) == 0)
    never.tv_sec += 100;
  else
    {
      never.tv_sec = time (NULL) + 100;
      never.tv_nsec = 0;
    }

  int result = 0;
  for (long l = TF_MQ_RECEIVE; l <= TF_MQ_TIMEDSEND; ++l)
    {
      cl_called = 0;

      pthread_t th;
      if (pthread_create (&th, NULL, tf, (void *) l) != 0)
	{
	  printf ("1st %s create failed\n", names[l]);
	  result = 1;
	  continue;
	}

      int r = pthread_barrier_wait (&b);
      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
	{
	  puts ("barrier_wait failed");
	  result = 1;
	  continue;
	}

      struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 };
      while (nanosleep (&ts, &ts) != 0)
	continue;

      printf ("going to cancel %s in-time\n", names[l]);
      if (pthread_cancel (th) != 0)
	{
	  printf ("1st cancel of %s failed\n", names[l]);
	  result = 1;
	  continue;
	}

      void *status;
      if (pthread_join (th, &status) != 0)
	{
	  printf ("1st join of %s failed\n", names[l]);
	  result = 1;
	  continue;
	}
      if (status != PTHREAD_CANCELED)
	{
	  printf ("1st %s thread not canceled\n", names[l]);
	  result = 1;
	  continue;
	}

      if (cl_called == 0)
	{
	  printf ("%s cleanup handler not called\n", names[l]);
	  result = 1;
	  continue;
	}
      if (cl_called > 1)
	{
	  printf ("%s cleanup handler called more than once\n", names[l]);
	  result = 1;
	  continue;
	}

      printf ("in-time %s cancellation succeeded\n", names[l]);

      cl_called = 0;

      if (pthread_create (&th, NULL, tf, (void *) l) != 0)
	{
	  printf ("2nd %s create failed\n", names[l]);
	  result = 1;
	  continue;
	}

      printf ("going to cancel %s early\n", names[l]);
      if (pthread_cancel (th) != 0)
	{
	  printf ("2nd cancel of %s failed\n", names[l]);
	  result = 1;
	  continue;
	}

      r = pthread_barrier_wait (&b);
      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
	{
	  puts ("barrier_wait failed");
	  result = 1;
	  continue;
	}

      if (pthread_join (th, &status) != 0)
	{
	  printf ("2nd join of %s failed\n", names[l]);
	  result = 1;
	  continue;
	}
      if (status != PTHREAD_CANCELED)
	{
	  printf ("2nd %s thread not canceled\n", names[l]);
	  result = 1;
	  continue;
	}

      if (cl_called == 0)
	{
	  printf ("%s cleanup handler not called\n", names[l]);
	  result = 1;
	  continue;
	}
      if (cl_called > 1)
	{
	  printf ("%s cleanup handler called more than once\n", names[l]);
	  result = 1;
	  continue;
	}

      printf ("early %s cancellation succeeded\n", names[l]);

      if (l == TF_MQ_TIMEDRECEIVE)
	{
	  /* mq_receive and mq_timedreceive are tested on empty mq.
	     For mq_send and mq_timedsend we need to make it full.
	     If this fails, there is no point in doing further testing.  */
	  char c = ' ';
	  if (mq_send (q, &c, 1, 1) != 0)
	    {
	      printf ("mq_send failed: %m\n");
	      result = 1;
	      break;
	    }
	}
    }

  if (mq_close (q) != 0)
    {
      printf ("mq_close failed: %m\n");
      result = 1;
    }

  return result;
}
#else
# define TEST_FUNCTION 0
#endif

#include "../test-skeleton.c"