nptl/tst-join1.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 <stdio.h>
  21 #include <stdlib.h>
  22
  23
  24 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
  25
  26
  27 static void *
  28 tf (void *arg)
  29 {
  30   pthread_t mh = (pthread_t) arg;
  31   void *result;
  32
  33   if (pthread_mutex_unlock (&lock) != 0)
  34     {
  35       puts ("unlock failed");
  36       exit (1);
  37     }
  38
  39   if (pthread_join (mh, &result) != 0)
  40     {
  41       puts ("join failed");
  42       exit (1);
  43     }
  44
  45   if (result != (void *) 42l)
  46     {
  47       printf ("result wrong: expected %p, got %p\n", (void *) 42, result);
  48       exit (1);
  49     }
  50
  51   exit (0);
  52 }
  53
  54
  55 static int
  56 do_test (void)
  57 {
  58   pthread_t th;
  59
  60   if (pthread_mutex_lock (&lock) != 0)
  61     {
  62       puts ("1st lock failed");
  63       exit (1);
  64     }
  65
  66   if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
  67     {
  68       puts ("create failed");
  69       exit (1);
  70     }
  71
  72   if (pthread_mutex_lock (&lock) != 0)
  73     {
  74       puts ("2nd lock failed");
  75       exit (1);
  76     }
  77
  78   pthread_exit ((void *) 42);
  79 }
  80
  81 #define TEST_FUNCTION do_test ()
  82 #include "../test-skeleton.c"