nptl/tst-cancel2.c

   1 /* Copyright (C) 2002, 2006 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   while (write (fd[1], buf, sizeof (buf)) > 0);
  37
  38   return (void *) 42l;
  39 }
  40
  41
  42 static int
  43 do_test (void)
  44 {
  45   pthread_t th;
  46   void *r;
  47   struct sigaction sa;
  48
  49   sa.sa_handler = SIG_IGN;
  50   sigemptyset (&sa.sa_mask);
  51   sa.sa_flags = 0;
  52
  53   if (sigaction (SIGPIPE, &sa, NULL) != 0)
  54     {
  55       puts ("sigaction failed");
  56       return 1;
  57     }
  58
  59   if (pipe (fd) != 0)
  60     {
  61       puts ("pipe failed");
  62       return 1;
  63     }
  64
  65   if (pthread_create (&th, NULL, tf, NULL) != 0)
  66     {
  67       puts ("create failed");
  68       return 1;
  69     }
  70
  71   if (pthread_cancel (th) != 0)
  72     {
  73       puts ("cancel failed");
  74       return 1;
  75     }
  76
  77   /* This will cause the write in the child to return.  */
  78   close (fd[0]);
  79
  80   if (pthread_join (th, &r) != 0)
  81     {
  82       puts ("join failed");
  83       return 1;
  84     }
  85
  86   if (r != PTHREAD_CANCELED)
  87     {
  88       printf ("result is wrong: expected %p, got %p\n", PTHREAD_CANCELED, r);
  89       return 1;
  90     }
  91
  92   return 0;
  93 }
  94
  95 #define TEST_FUNCTION do_test ()
  96 #include "../test-skeleton.c"