nptl/tst-basic2.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 <stdio.h>
  21 #include <stdint.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24
  25
  26 #define N 20
  27
  28 static pthread_t th[N];
  29 static pthread_mutex_t lock[N];
  30
  31
  32 static void *tf (void *a)
  33 {
  34   uintptr_t idx = (uintptr_t) a;
  35
  36   pthread_mutex_lock (&lock[idx]);
  37
  38   return pthread_equal (pthread_self (), th[idx]) ? NULL : (void *) 1l;
  39 }
  40
  41
  42 int
  43 do_test (void)
  44 {
  45   if (pthread_equal (pthread_self (), pthread_self ()) == 0)
  46     {
  47       puts ("pthread_equal (pthread_self (), pthread_self ()) failed");
  48       exit (1);
  49     }
  50
  51   pthread_attr_t at;
  52
  53   if (pthread_attr_init (&at) != 0)
  54     {
  55       puts ("attr_init failed");
  56       return 1;
  57     }
  58
  59   if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
  60     {
  61       puts ("attr_setstacksize failed");
  62       return 1;
  63     }
  64
  65   int i;
  66   for (i = 0; i < N; ++i)
  67     {
  68       if (pthread_mutex_init (&lock[i], NULL) != 0)
  69         {
  70           puts ("mutex_init failed");
  71           exit (1);
  72         }
  73
  74       if (pthread_mutex_lock (&lock[i]) != 0)
  75         {
  76           puts ("mutex_lock failed");
  77           exit (1);
  78         }
  79
  80       if (pthread_create (&th[i], &at, tf, (void *) (long int) i) != 0)
  81         {
  82           puts ("create failed");
  83           exit (1);
  84         }
  85
  86       if (pthread_mutex_unlock (&lock[i]) != 0)
  87         {
  88           puts ("mutex_unlock failed");
  89           exit (1);
  90         }
  91
  92       printf ("created thread %d\n", i);
  93     }
  94
  95   if (pthread_attr_destroy (&at) != 0)
  96     {
  97       puts ("attr_destroy failed");
  98       return 1;
  99     }
 100
 101   int result = 0;
 102   for (i = 0; i < N; ++i)
 103     {
 104       void *r;
 105       int e;
 106       if ((e = pthread_join (th[i], &r)) != 0)
 107         {
 108           printf ("join failed: %d\n", e);
 109           _exit (1);
 110         }
 111       else if (r != NULL)
 112         result = 1;
 113     }
 114
 115   return result;
 116 }
 117
 118
 119 #define TEST_FUNCTION do_test ()
 120 #include "../test-skeleton.c"