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