sysdeps/pthread/tst-basic1.c

   1 /* Copyright (C) 2002-2020 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <pthread.h>
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <sys/types.h>
  23
  24
  25 static int do_test (void);
  26
  27 #define TEST_FUNCTION do_test ()
  28 #include "../test-skeleton.c"
  29
  30 static pid_t pid;
  31
  32 static void *
  33 tf (void *a)
  34 {
  35   if (getpid () != pid)
  36     {
  37       write_message ("pid mismatch\n");
  38       _exit (1);
  39     }
  40
  41   return a;
  42 }
  43
  44
  45 int
  46 do_test (void)
  47 {
  48   pid = getpid ();
  49
  50 #define N 2
  51   pthread_t t[N];
  52   int i;
  53
  54   for (i = 0; i < N; ++i)
  55     if (pthread_create (&t[i], NULL, tf, (void *) (long int) (i + 1)) != 0)
  56       {
  57         write_message ("create failed\n");
  58         _exit (1);
  59       }
  60     else
  61       printf ("created thread %d\n", i);
  62
  63   for (i = 0; i < N; ++i)
  64     {
  65       void *r;
  66       int e;
  67       if ((e = pthread_join (t[i], &r)) != 0)
  68         {
  69           printf ("join failed: %d\n", e);
  70           _exit (1);
  71         }
  72       else if (r != (void *) (long int) (i + 1))
  73         {
  74           write_message ("result wrong\n");
  75           _exit (1);
  76         }
  77       else
  78         printf ("joined thread %d\n", i);
  79     }
  80
  81   return 0;
  82 }