nptl/tst-cancel16.c

   1 /* Copyright (C) 2003 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, 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 <pthread.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <sys/mman.h>
  27 #include <sys/wait.h>
  28
  29
  30 static pthread_barrier_t b2;
  31 static int fd;
  32 static int called;
  33
  34
  35 static void
  36 cl (void *arg)
  37 {
  38   called = 1;
  39 }
  40
  41
  42 static void *
  43 tf (void *arg)
  44 {
  45   int r = pthread_barrier_wait (&b2);
  46   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  47     {
  48       puts ("child thread: barrier_wait failed");
  49       exit (1);
  50     }
  51
  52   pthread_cleanup_push (cl, NULL);
  53
  54   /* This call should never return.  */
  55   (void) lockf (fd, F_LOCK, 0);
  56
  57   pthread_cleanup_pop (0);
  58
  59   return NULL;
  60 }
  61
  62
  63 static int
  64 do_test (void)
  65 {
  66   char fname[] = "/tmp/cancel16XXXXXX";
  67   fd = mkstemp (fname);
  68   if (fd == -1)
  69     {
  70       puts ("mkstemp failed");
  71       return 1;
  72     }
  73   unlink (fname);
  74
  75   char mem[sizeof (pthread_barrier_t)];
  76   memset (mem, '\0', sizeof (mem));
  77   if (TEMP_FAILURE_RETRY (pwrite (fd, mem, sizeof (mem), 0)) != sizeof (mem))
  78     {
  79       puts ("pwrite failed");
  80       return 1;
  81     }
  82
  83   void *p = mmap (NULL, sizeof (mem), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
  84   if (p == MAP_FAILED)
  85     {
  86       puts ("mmap failed");
  87       return 1;
  88     }
  89   pthread_barrier_t *b = (pthread_barrier_t *) p;
  90
  91   pthread_barrierattr_t ba;
  92   if (pthread_barrierattr_init (&ba) != 0)
  93     {
  94       puts ("barrierattr_init failed");
  95       return 1;
  96     }
  97   if (pthread_barrierattr_setpshared (&ba, 1) != 0)
  98     {
  99       puts ("barrierattr_setshared failed");
 100       return 1;
 101     }
 102
 103   if (pthread_barrier_init (b, &ba, 2) != 0)
 104     {
 105       puts ("1st barrier_init failed");
 106       return 1;
 107     }
 108   if (pthread_barrierattr_destroy (&ba) != 0)
 109     {
 110       puts ("barrier_destroy failed");
 111       return 1;
 112     }
 113
 114   pid_t pid = fork ();
 115   if (pid == 0)
 116     {
 117       /* Child.  Lock the file and wait.  */
 118       if (lockf (fd, F_LOCK, 0) != 0)
 119         {
 120           puts ("child process: lockf failed");
 121           _exit (1);
 122         }
 123
 124       int r = pthread_barrier_wait (b);
 125       if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 126         {
 127           puts ("child process: 1st barrier_wait failed");
 128           _exit (1);
 129         }
 130
 131       /* Make sure the process dies.  */
 132       alarm (5);
 133
 134       r = pthread_barrier_wait (b);
 135       if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 136         {
 137           puts ("child process: 2nd barrier_wait failed");
 138           _exit (1);
 139         }
 140
 141       _exit (0);
 142     }
 143   if (pid == -1)
 144     {
 145       puts ("fork failed");
 146       return 1;
 147     }
 148
 149   int r = pthread_barrier_wait (b);
 150   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 151     {
 152       puts ("main: 1st barrier_wait failed");
 153       _exit (1);
 154     }
 155
 156   if (pthread_barrier_init (&b2, NULL, 2) != 0)
 157     {
 158       puts ("2nd barrier_init failed");
 159       return 1;
 160     }
 161
 162   pthread_t th;
 163   if (pthread_create (&th, NULL, tf, NULL) != 0)
 164     {
 165       puts ("create failed");
 166       return 1;
 167     }
 168
 169   r = pthread_barrier_wait (&b2);
 170   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 171     {
 172       puts ("main: 2nd barrier_wait failed");
 173       return 1;
 174     }
 175
 176   /* Delay.  */
 177   sleep (1);
 178
 179   if (pthread_cancel (th) != 0)
 180     {
 181       puts ("cancel failed");
 182       return 1;
 183     }
 184
 185   void *result;
 186   if (pthread_join (th, &result) != 0)
 187     {
 188       puts ("join failed");
 189       return 1;
 190     }
 191   if (result != PTHREAD_CANCELED)
 192     {
 193       puts ("thread not canceled");
 194       return 1;
 195     }
 196   if (called == 0)
 197     {
 198       puts ("cleanup handler not called");
 199       return 1;
 200     }
 201
 202   r = pthread_barrier_wait (b);
 203   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 204     {
 205       puts ("main: 3rd barrier_wait failed");
 206       return 1;
 207     }
 208
 209   int status;
 210   if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
 211     {
 212       puts ("waitpid failed");
 213       return 1;
 214     }
 215   if (WEXITSTATUS (status) != 0)
 216     {
 217       printf ("child process exits with %d\n", WEXITSTATUS (status));
 218       return 1;
 219     }
 220
 221   if (lockf (fd, F_LOCK, 0) != 0)
 222     {
 223       puts ("main: lockf failed");
 224       return 1;
 225     }
 226
 227   return 0;
 228 }
 229
 230 #define TEST_FUNCTION do_test ()
 231 #include "../test-skeleton.c"