sysdeps/pthread/tst-stack1.c

   1 /* Copyright (C) 2002-2021 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 <limits.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <sys/param.h>
  24 #include <unistd.h>
  25
  26
  27 static void *stack;
  28 static size_t size;
  29
  30
  31 static void *
  32 tf (void *a)
  33 {
  34   int result = 0;
  35
  36   puts ("child start");
  37
  38   pthread_attr_t attr;
  39   if (pthread_getattr_np (pthread_self (), &attr) != 0)
  40     {
  41       puts ("getattr_np failed");
  42       exit (1);
  43     }
  44
  45   size_t test_size;
  46   void *test_stack;
  47   if (pthread_attr_getstack (&attr, &test_stack, &test_size) != 0)
  48     {
  49       puts ("attr_getstack failed");
  50       exit (1);
  51     }
  52
  53   if (test_size != size)
  54     {
  55       printf ("child: reported size differs: is %zu, expected %zu\n",
  56               test_size, size);
  57       result = 1;
  58     }
  59
  60   if (test_stack != stack)
  61     {
  62       printf ("child: reported stack address differs: is %p, expected %p\n",
  63               test_stack, stack);
  64       result = 1;
  65     }
  66
  67   puts ("child OK");
  68
  69   return result ? (void *) 1l : NULL;
  70 }
  71
  72
  73 int
  74 do_test (void)
  75 {
  76   int result = 0;
  77
  78   size = 4 * getpagesize ();
  79 #ifdef PTHREAD_STACK_MIN
  80   size = MAX (size, PTHREAD_STACK_MIN);
  81 #endif
  82   if (posix_memalign (&stack, getpagesize (), size) != 0)
  83     {
  84       puts ("out of memory while allocating the stack memory");
  85       exit (1);
  86     }
  87
  88   pthread_attr_t attr;
  89   if (pthread_attr_init (&attr) != 0)
  90     {
  91       puts ("attr_init failed");
  92       exit (1);
  93     }
  94
  95   puts ("attr_setstack");
  96   if (pthread_attr_setstack (&attr, stack, size) != 0)
  97     {
  98       puts ("attr_setstack failed");
  99       exit (1);
 100     }
 101
 102   size_t test_size;
 103   void *test_stack;
 104   puts ("attr_getstack");
 105   if (pthread_attr_getstack (&attr, &test_stack, &test_size) != 0)
 106     {
 107       puts ("attr_getstack failed");
 108       exit (1);
 109     }
 110
 111   if (test_size != size)
 112     {
 113       printf ("reported size differs: is %zu, expected %zu\n",
 114               test_size, size);
 115       result = 1;
 116     }
 117
 118   if (test_stack != stack)
 119     {
 120       printf ("reported stack address differs: is %p, expected %p\n",
 121               test_stack, stack);
 122       result = 1;
 123     }
 124
 125   puts ("create");
 126
 127   pthread_t th;
 128   if (pthread_create (&th, &attr, tf, NULL) != 0)
 129     {
 130       puts ("failed to create thread");
 131       exit (1);
 132     }
 133
 134   void *status;
 135   if (pthread_join (th, &status) != 0)
 136     {
 137       puts ("join failed");
 138       exit (1);
 139     }
 140
 141   result |= status != NULL;
 142
 143   return result;
 144 }
 145
 146
 147 #define TEST_FUNCTION do_test ()
 148 #include "../test-skeleton.c"