linuxthreads/tst-cancel2.c

   1 /* Copyright (C) 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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 <pthread.h>
  21 #include <signal.h>
  22 #include <stdio.h>
  23 #include <unistd.h>
  24
  25
  26 static int fd[2];
  27
  28
  29 static void *
  30 tf (void *arg)
  31 {
  32   /* The buffer size must be larger than the pipe size so that the
  33      write blocks.  */
  34   char buf[100000];
  35
  36   if (write (fd[1], buf, sizeof (buf)) == sizeof (buf))
  37     {
  38       puts ("write succeeded");
  39       return (void *) 1l;
  40     }
  41
  42   return (void *) 42l;
  43 }
  44
  45
  46 static int
  47 do_test (void)
  48 {
  49   pthread_t th;
  50   void *r;
  51   struct sigaction sa;
  52
  53   sa.sa_handler = SIG_IGN;
  54   sigemptyset (&sa.sa_mask);
  55   sa.sa_flags = 0;
  56
  57   if (sigaction (SIGPIPE, &sa, NULL) != 0)
  58     {
  59       puts ("sigaction failed");
  60       return 1;
  61     }
  62
  63   if (pipe (fd) != 0)
  64     {
  65       puts ("pipe failed");
  66       return 1;
  67     }
  68
  69   if (pthread_create (&th, NULL, tf, NULL) != 0)
  70     {
  71       puts ("create failed");
  72       return 1;
  73     }
  74
  75   if (pthread_cancel (th) != 0)
  76     {
  77       puts ("cancel failed");
  78       return 1;
  79     }
  80
  81   /* This will cause the write in the child to return.  */
  82   close (fd[0]);
  83
  84   if (pthread_join (th, &r) != 0)
  85     {
  86       puts ("join failed");
  87       return 1;
  88     }
  89
  90   if (r != PTHREAD_CANCELED)
  91     {
  92       printf ("result is wrong: expected %p, got %p\n", PTHREAD_CANCELED, r);
  93       return 1;
  94     }
  95
  96   return 0;
  97 }
  98
  99 #define TEST_FUNCTION do_test ()
 100 #include "../test-skeleton.c"