nptl/tst-cancel17.c

   1 /* Copyright (C) 2003-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <aio.h>
  20 #include <errno.h>
  21 #include <pthread.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27
  28 static pthread_barrier_t b;
  29
  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
  41 static void *
  42 tf (void *arg)
  43 {
  44   int r = pthread_barrier_wait (&b);
  45   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  46     {
  47       puts ("tf: barrier_wait failed");
  48       exit (1);
  49     }
  50
  51   pthread_cleanup_push (cl, NULL);
  52
  53   const struct aiocb *l[1] = { arg };
  54
  55   TEMP_FAILURE_RETRY (aio_suspend (l, 1, NULL));
  56
  57   pthread_cleanup_pop (0);
  58
  59   puts ("tf: aio_suspend returned");
  60
  61   exit (1);
  62 }
  63
  64
  65 static void *
  66 tf2 (void *arg)
  67 {
  68   int r = pthread_barrier_wait (&b);
  69   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  70     {
  71       puts ("tf2: barrier_wait failed");
  72       exit (1);
  73     }
  74
  75   pthread_cleanup_push (cl, NULL);
  76
  77   const struct aiocb *l[1] = { arg };
  78   struct timespec ts = { .tv_sec = 1000, .tv_nsec = 0 };
  79
  80   TEMP_FAILURE_RETRY (aio_suspend (l, 1, &ts));
  81
  82   pthread_cleanup_pop (0);
  83
  84   puts ("tf2: aio_suspend returned");
  85
  86   exit (1);
  87 }
  88
  89
  90 static int
  91 do_test (void)
  92 {
  93   int fds[2];
  94   if (pipe (fds) != 0)
  95     {
  96       puts ("pipe failed");
  97       return 1;
  98     }
  99
 100   struct aiocb a, a2, *ap;
 101   char mem[1];
 102   memset (&a, '\0', sizeof (a));
 103   a.aio_fildes = fds[0];
 104   a.aio_buf = mem;
 105   a.aio_nbytes = sizeof (mem);
 106   if (aio_read (&a) != 0)
 107     {
 108       puts ("aio_read failed");
 109       return 1;
 110     }
 111
 112   if (pthread_barrier_init (&b, NULL, 2) != 0)
 113     {
 114       puts ("barrier_init failed");
 115       return 1;
 116     }
 117
 118   pthread_t th;
 119   if (pthread_create (&th, NULL, tf, &a) != 0)
 120     {
 121       puts ("1st create failed");
 122       return 1;
 123     }
 124
 125   int r = pthread_barrier_wait (&b);
 126   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 127     {
 128       puts ("barrier_wait failed");
 129       exit (1);
 130     }
 131
 132   struct timespec  ts = { .tv_sec = 0, .tv_nsec = 100000000 };
 133   while (nanosleep (&ts, &ts) != 0)
 134     continue;
 135
 136   puts ("going to cancel tf in-time");
 137   if (pthread_cancel (th) != 0)
 138     {
 139       puts ("1st cancel failed");
 140       return 1;
 141     }
 142
 143   void *status;
 144   if (pthread_join (th, &status) != 0)
 145     {
 146       puts ("1st join failed");
 147       return 1;
 148     }
 149   if (status != PTHREAD_CANCELED)
 150     {
 151       puts ("1st thread not canceled");
 152       return 1;
 153     }
 154
 155   if (cl_called == 0)
 156     {
 157       puts ("tf cleanup handler not called");
 158       return 1;
 159     }
 160   if (cl_called > 1)
 161     {
 162       puts ("tf cleanup handler called more than once");
 163       return 1;
 164     }
 165
 166   cl_called = 0;
 167
 168   if (pthread_create (&th, NULL, tf2, &a) != 0)
 169     {
 170       puts ("2nd create failed");
 171       return 1;
 172     }
 173
 174   r = pthread_barrier_wait (&b);
 175   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 176     {
 177       puts ("2nd barrier_wait failed");
 178       exit (1);
 179     }
 180
 181   ts.tv_sec = 0;
 182   ts.tv_nsec = 100000000;
 183   while (nanosleep (&ts, &ts) != 0)
 184     continue;
 185
 186   puts ("going to cancel tf2 in-time");
 187   if (pthread_cancel (th) != 0)
 188     {
 189       puts ("2nd cancel failed");
 190       return 1;
 191     }
 192
 193   if (pthread_join (th, &status) != 0)
 194     {
 195       puts ("2nd join failed");
 196       return 1;
 197     }
 198   if (status != PTHREAD_CANCELED)
 199     {
 200       puts ("2nd thread not canceled");
 201       return 1;
 202     }
 203
 204   if (cl_called == 0)
 205     {
 206       puts ("tf2 cleanup handler not called");
 207       return 1;
 208     }
 209   if (cl_called > 1)
 210     {
 211       puts ("tf2 cleanup handler called more than once");
 212       return 1;
 213     }
 214
 215   puts ("in-time cancellation succeeded");
 216
 217   ap = &a;
 218   if (aio_cancel (fds[0], &a) != AIO_CANCELED)
 219     {
 220       puts ("aio_cancel failed");
 221       /* If aio_cancel failed, we cannot reuse aiocb a.  */
 222       ap = &a2;
 223     }
 224
 225
 226   cl_called = 0;
 227
 228   size_t len2 = fpathconf (fds[1], _PC_PIPE_BUF);
 229   size_t page_size = sysconf (_SC_PAGESIZE);
 230   len2 = 20 * (len2 < page_size ? page_size : len2) + sizeof (mem) + 1;
 231   char *mem2 = malloc (len2);
 232   if (mem2 == NULL)
 233     {
 234       puts ("could not allocate memory for pipe write");
 235       return 1;
 236     }
 237
 238   memset (ap, '\0', sizeof (*ap));
 239   ap->aio_fildes = fds[1];
 240   ap->aio_buf = mem2;
 241   ap->aio_nbytes = len2;
 242   if (aio_write (ap) != 0)
 243     {
 244       puts ("aio_write failed");
 245       return 1;
 246     }
 247
 248   if (pthread_create (&th, NULL, tf, ap) != 0)
 249     {
 250       puts ("3rd create failed");
 251       return 1;
 252     }
 253
 254   puts ("going to cancel tf early");
 255   if (pthread_cancel (th) != 0)
 256     {
 257       puts ("3rd cancel failed");
 258       return 1;
 259     }
 260
 261   r = pthread_barrier_wait (&b);
 262   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 263     {
 264       puts ("3rd barrier_wait failed");
 265       exit (1);
 266     }
 267
 268   if (pthread_join (th, &status) != 0)
 269     {
 270       puts ("3rd join failed");
 271       return 1;
 272     }
 273   if (status != PTHREAD_CANCELED)
 274     {
 275       puts ("3rd thread not canceled");
 276       return 1;
 277     }
 278
 279   if (cl_called == 0)
 280     {
 281       puts ("tf cleanup handler not called");
 282       return 1;
 283     }
 284   if (cl_called > 1)
 285     {
 286       puts ("tf cleanup handler called more than once");
 287       return 1;
 288     }
 289
 290   cl_called = 0;
 291
 292   if (pthread_create (&th, NULL, tf2, ap) != 0)
 293     {
 294       puts ("4th create failed");
 295       return 1;
 296     }
 297
 298   puts ("going to cancel tf2 early");
 299   if (pthread_cancel (th) != 0)
 300     {
 301       puts ("4th cancel failed");
 302       return 1;
 303     }
 304
 305   r = pthread_barrier_wait (&b);
 306   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 307     {
 308       puts ("4th barrier_wait failed");
 309       exit (1);
 310     }
 311
 312   if (pthread_join (th, &status) != 0)
 313     {
 314       puts ("4th join failed");
 315       return 1;
 316     }
 317   if (status != PTHREAD_CANCELED)
 318     {
 319       puts ("4th thread not canceled");
 320       return 1;
 321     }
 322
 323   if (cl_called == 0)
 324     {
 325       puts ("tf2 cleanup handler not called");
 326       return 1;
 327     }
 328   if (cl_called > 1)
 329     {
 330       puts ("tf2 cleanup handler called more than once");
 331       return 1;
 332     }
 333
 334   puts ("early cancellation succeeded");
 335
 336   return 0;
 337 }
 338
 339 #define TEST_FUNCTION do_test ()
 340 #include "../test-skeleton.c"