nptl/tst-stdio2.c

   1 /* Copyright (C) 2002-2016 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <pthread.h>
  20 #include <signal.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24
  25
  26 static void *tf (void *a)
  27 {
  28   puts ("start tf");
  29
  30   /* Multiple locking, implicitly or explicitly, must be possible.  */
  31   flockfile (stdout);
  32
  33   puts ("after first flockfile");
  34
  35   flockfile (stdout);
  36
  37   puts ("foo");
  38
  39   funlockfile (stdout);
  40
  41   puts ("after first funlockfile");
  42
  43   funlockfile (stdout);
  44
  45   puts ("all done");
  46
  47   return a;
  48 }
  49
  50
  51 int
  52 do_test (void)
  53 {
  54   pthread_t th;
  55
  56   if (pthread_create (&th, NULL, tf, NULL) != 0)
  57     {
  58       write (2, "create failed\n", 14);
  59       _exit (1);
  60     }
  61
  62   void *result;
  63   if (pthread_join (th, &result) != 0)
  64     {
  65       puts ("join failed");
  66       exit (1);
  67     }
  68   else if (result != NULL)
  69     {
  70       printf ("wrong return value: %p, expected %p\n", result, NULL);
  71       exit (1);
  72     }
  73
  74   puts ("join returned succsefully");
  75
  76   return 0;
  77 }
  78
  79
  80 #define TEST_FUNCTION do_test ()
  81 #include "../test-skeleton.c"