sysdeps/pthread/tst-basic1.c

   1 /* Copyright (C) 2002-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <pthread.h>
  19 #include <stdio.h>
  20 #include <unistd.h>
  21 #include <sys/types.h>
  22
  23
  24 static int do_test (void);
  25
  26 #define TEST_FUNCTION do_test ()
  27 #include "../test-skeleton.c"
  28
  29 static pid_t pid;
  30
  31 static void *
  32 tf (void *a)
  33 {
  34   if (getpid () != pid)
  35     {
  36       write_message ("pid mismatch\n");
  37       _exit (1);
  38     }
  39
  40   return a;
  41 }
  42
  43
  44 int
  45 do_test (void)
  46 {
  47   pid = getpid ();
  48
  49 #define N 2
  50   pthread_t t[N];
  51   int i;
  52
  53   for (i = 0; i < N; ++i)
  54     if (pthread_create (&t[i], NULL, tf, (void *) (long int) (i + 1)) != 0)
  55       {
  56         write_message ("create failed\n");
  57         _exit (1);
  58       }
  59     else
  60       printf ("created thread %d\n", i);
  61
  62   for (i = 0; i < N; ++i)
  63     {
  64       void *r;
  65       int e;
  66       if ((e = pthread_join (t[i], &r)) != 0)
  67         {
  68           printf ("join failed: %d\n", e);
  69           _exit (1);
  70         }
  71       else if (r != (void *) (long int) (i + 1))
  72         {
  73           write_message ("result wrong\n");
  74           _exit (1);
  75         }
  76       else
  77         printf ("joined thread %d\n", i);
  78     }
  79
  80   return 0;
  81 }