rt/tst-mqueue8.c

   1 /* Copyright (C) 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <mqueue.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #if _POSIX_THREADS
  27 # include <pthread.h>
  28
  29 static pthread_barrier_t b;
  30
  31 /* Cleanup handling test.  */
  32 static int cl_called;
  33
  34 static void
  35 cl (void *arg)
  36 {
  37   ++cl_called;
  38 }
  39
  40 #define TF_MQ_RECEIVE           0L
  41 #define TF_MQ_TIMEDRECEIVE      1L
  42 #define TF_MQ_SEND              2L
  43 #define TF_MQ_TIMEDSEND         3L
  44
  45 static const char *names[]
  46   = { "mq_receive", "mq_timedreceive", "mq_send", "mq_timedsend" };
  47
  48 static mqd_t q;
  49 static struct timespec never;
  50
  51 static void *
  52 tf (void *arg)
  53 {
  54   int r = pthread_barrier_wait (&b);
  55   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  56     {
  57       puts ("tf: barrier_wait failed");
  58       exit (1);
  59     }
  60
  61   pthread_cleanup_push (cl, NULL);
  62
  63   char c = ' ';
  64
  65   switch ((long) arg)
  66     {
  67     case TF_MQ_SEND:
  68       TEMP_FAILURE_RETRY (mq_send (q, &c, 1, 1));
  69       break;
  70     case TF_MQ_TIMEDSEND:
  71       TEMP_FAILURE_RETRY (mq_timedsend (q, &c, 1, 1, &never));
  72       break;
  73     case TF_MQ_RECEIVE:
  74       TEMP_FAILURE_RETRY (mq_receive (q, &c, 1, NULL));
  75       break;
  76     case TF_MQ_TIMEDRECEIVE:
  77       TEMP_FAILURE_RETRY (mq_timedreceive (q, &c, 1, NULL, &never));
  78       break;
  79     }
  80
  81   pthread_cleanup_pop (0);
  82
  83   printf ("tf: %s returned\n", names[(long) arg]);
  84
  85   exit (1);
  86 }
  87
  88 #define TEST_FUNCTION do_test ()
  89 static int
  90 do_test (void)
  91 {
  92   char name[sizeof "/tst-mqueue8-" + sizeof (pid_t) * 3];
  93   snprintf (name, sizeof (name), "/tst-mqueue8-%u", getpid ());
  94
  95   struct mq_attr attr = { .mq_maxmsg = 1, .mq_msgsize = 1 };
  96   q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  97
  98   if (q == (mqd_t) -1)
  99     {
 100       printf ("mq_open failed with: %m\n");
 101       return 0;
 102     }
 103
 104   if (mq_unlink (name) != 0)
 105     {
 106       printf ("mq_unlink failed with: %m\n");
 107       return 1;
 108     }
 109
 110   if (pthread_barrier_init (&b, NULL, 2) != 0)
 111     {
 112       puts ("barrier_init failed");
 113       return 1;
 114     }
 115
 116   if (clock_gettime (CLOCK_REALTIME, &never) == 0)
 117     never.tv_sec += 100;
 118   else
 119     {
 120       never.tv_sec = time (NULL) + 100;
 121       never.tv_nsec = 0;
 122     }
 123
 124   int result = 0;
 125   for (long l = TF_MQ_RECEIVE; l <= TF_MQ_TIMEDSEND; ++l)
 126     {
 127       cl_called = 0;
 128
 129       pthread_t th;
 130       if (pthread_create (&th, NULL, tf, (void *) l) != 0)
 131         {
 132           printf ("1st %s create failed\n", names[l]);
 133           result = 1;
 134           continue;
 135         }
 136
 137       int r = pthread_barrier_wait (&b);
 138       if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 139         {
 140           puts ("barrier_wait failed");
 141           result = 1;
 142           continue;
 143         }
 144
 145       struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 };
 146       while (nanosleep (&ts, &ts) != 0)
 147         continue;
 148
 149       printf ("going to cancel %s in-time\n", names[l]);
 150       if (pthread_cancel (th) != 0)
 151         {
 152           printf ("1st cancel of %s failed\n", names[l]);
 153           result = 1;
 154           continue;
 155         }
 156
 157       void *status;
 158       if (pthread_join (th, &status) != 0)
 159         {
 160           printf ("1st join of %s failed\n", names[l]);
 161           result = 1;
 162           continue;
 163         }
 164       if (status != PTHREAD_CANCELED)
 165         {
 166           printf ("1st %s thread not canceled\n", names[l]);
 167           result = 1;
 168           continue;
 169         }
 170
 171       if (cl_called == 0)
 172         {
 173           printf ("%s cleanup handler not called\n", names[l]);
 174           result = 1;
 175           continue;
 176         }
 177       if (cl_called > 1)
 178         {
 179           printf ("%s cleanup handler called more than once\n", names[l]);
 180           result = 1;
 181           continue;
 182         }
 183
 184       printf ("in-time %s cancellation succeeded\n", names[l]);
 185
 186       cl_called = 0;
 187
 188       if (pthread_create (&th, NULL, tf, (void *) l) != 0)
 189         {
 190           printf ("2nd %s create failed\n", names[l]);
 191           result = 1;
 192           continue;
 193         }
 194
 195       printf ("going to cancel %s early\n", names[l]);
 196       if (pthread_cancel (th) != 0)
 197         {
 198           printf ("2nd cancel of %s failed\n", names[l]);
 199           result = 1;
 200           continue;
 201         }
 202
 203       r = pthread_barrier_wait (&b);
 204       if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 205         {
 206           puts ("barrier_wait failed");
 207           result = 1;
 208           continue;
 209         }
 210
 211       if (pthread_join (th, &status) != 0)
 212         {
 213           printf ("2nd join of %s failed\n", names[l]);
 214           result = 1;
 215           continue;
 216         }
 217       if (status != PTHREAD_CANCELED)
 218         {
 219           printf ("2nd %s thread not canceled\n", names[l]);
 220           result = 1;
 221           continue;
 222         }
 223
 224       if (cl_called == 0)
 225         {
 226           printf ("%s cleanup handler not called\n", names[l]);
 227           result = 1;
 228           continue;
 229         }
 230       if (cl_called > 1)
 231         {
 232           printf ("%s cleanup handler called more than once\n", names[l]);
 233           result = 1;
 234           continue;
 235         }
 236
 237       printf ("early %s cancellation succeeded\n", names[l]);
 238
 239       if (l == TF_MQ_TIMEDRECEIVE)
 240         {
 241           /* mq_receive and mq_timedreceive are tested on empty mq.
 242              For mq_send and mq_timedsend we need to make it full.
 243              If this fails, there is no point in doing further testing.  */
 244           char c = ' ';
 245           if (mq_send (q, &c, 1, 1) != 0)
 246             {
 247               printf ("mq_send failed: %m\n");
 248               result = 1;
 249               break;
 250             }
 251         }
 252     }
 253
 254   if (mq_close (q) != 0)
 255     {
 256       printf ("mq_close failed: %m\n");
 257       result = 1;
 258     }
 259
 260   return result;
 261 }
 262 #else
 263 # define TEST_FUNCTION 0
 264 #endif
 265
 266 #include "../test-skeleton.c"