nptl/tst-stdio2.c

   1 /* Copyright (C) 2002-2018 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 int do_test (void);
  27
  28 #define TEST_FUNCTION do_test ()
  29 #include "../test-skeleton.c"
  30
  31 static void *tf (void *a)
  32 {
  33   puts ("start tf");
  34
  35   /* Multiple locking, implicitly or explicitly, must be possible.  */
  36   flockfile (stdout);
  37
  38   puts ("after first flockfile");
  39
  40   flockfile (stdout);
  41
  42   puts ("foo");
  43
  44   funlockfile (stdout);
  45
  46   puts ("after first funlockfile");
  47
  48   funlockfile (stdout);
  49
  50   puts ("all done");
  51
  52   return a;
  53 }
  54
  55
  56 int
  57 do_test (void)
  58 {
  59   pthread_t th;
  60
  61   if (pthread_create (&th, NULL, tf, NULL) != 0)
  62     {
  63       write_message ("create failed\n");
  64       _exit (1);
  65     }
  66
  67   void *result;
  68   if (pthread_join (th, &result) != 0)
  69     {
  70       puts ("join failed");
  71       exit (1);
  72     }
  73   else if (result != NULL)
  74     {
  75       printf ("wrong return value: %p, expected %p\n", result, NULL);
  76       exit (1);
  77     }
  78
  79   puts ("join returned succsefully");
  80
  81   return 0;
  82 }