sysdeps/pthread/tst-stack1.c

   1 /* Copyright (C) 2002-2022 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 <limits.h>
  19 #include <pthread.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <sys/param.h>
  23 #include <unistd.h>
  24
  25
  26 static void *stack;
  27 static size_t size;
  28
  29
  30 static void *
  31 tf (void *a)
  32 {
  33   int result = 0;
  34
  35   puts ("child start");
  36
  37   pthread_attr_t attr;
  38   if (pthread_getattr_np (pthread_self (), &attr) != 0)
  39     {
  40       puts ("getattr_np failed");
  41       exit (1);
  42     }
  43
  44   size_t test_size;
  45   void *test_stack;
  46   if (pthread_attr_getstack (&attr, &test_stack, &test_size) != 0)
  47     {
  48       puts ("attr_getstack failed");
  49       exit (1);
  50     }
  51
  52   if (test_size != size)
  53     {
  54       printf ("child: reported size differs: is %zu, expected %zu\n",
  55               test_size, size);
  56       result = 1;
  57     }
  58
  59   if (test_stack != stack)
  60     {
  61       printf ("child: reported stack address differs: is %p, expected %p\n",
  62               test_stack, stack);
  63       result = 1;
  64     }
  65
  66   puts ("child OK");
  67
  68   return result ? (void *) 1l : NULL;
  69 }
  70
  71
  72 int
  73 do_test (void)
  74 {
  75   int result = 0;
  76
  77   size = 4 * getpagesize ();
  78 #ifdef PTHREAD_STACK_MIN
  79   size = MAX (size, PTHREAD_STACK_MIN);
  80 #endif
  81   if (posix_memalign (&stack, getpagesize (), size) != 0)
  82     {
  83       puts ("out of memory while allocating the stack memory");
  84       exit (1);
  85     }
  86
  87   pthread_attr_t attr;
  88   if (pthread_attr_init (&attr) != 0)
  89     {
  90       puts ("attr_init failed");
  91       exit (1);
  92     }
  93
  94   puts ("attr_setstack");
  95   if (pthread_attr_setstack (&attr, stack, size) != 0)
  96     {
  97       puts ("attr_setstack failed");
  98       exit (1);
  99     }
 100
 101   size_t test_size;
 102   void *test_stack;
 103   puts ("attr_getstack");
 104   if (pthread_attr_getstack (&attr, &test_stack, &test_size) != 0)
 105     {
 106       puts ("attr_getstack failed");
 107       exit (1);
 108     }
 109
 110   if (test_size != size)
 111     {
 112       printf ("reported size differs: is %zu, expected %zu\n",
 113               test_size, size);
 114       result = 1;
 115     }
 116
 117   if (test_stack != stack)
 118     {
 119       printf ("reported stack address differs: is %p, expected %p\n",
 120               test_stack, stack);
 121       result = 1;
 122     }
 123
 124   puts ("create");
 125
 126   pthread_t th;
 127   if (pthread_create (&th, &attr, tf, NULL) != 0)
 128     {
 129       puts ("failed to create thread");
 130       exit (1);
 131     }
 132
 133   void *status;
 134   if (pthread_join (th, &status) != 0)
 135     {
 136       puts ("join failed");
 137       exit (1);
 138     }
 139
 140   result |= status != NULL;
 141
 142   return result;
 143 }
 144
 145
 146 #define TEST_FUNCTION do_test ()
 147 #include "../test-skeleton.c"