tests/test-get-rusage-data.c

   1 /* Test of getter for RLIMIT_DATA.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 #include "resource-ext.h"
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24 #include "qemu.h"
  25 #include "macros.h"
  26
  27 void *memchunk1;
  28 void *memchunk2;
  29
  30 int
  31 main ()
  32 {
  33   uintptr_t value1, value2, value3;
  34
  35   value1 = get_rusage_data ();
  36
  37   memchunk1 = malloc (0x88);
  38
  39   value2 = get_rusage_data ();
  40
  41   memchunk2 = malloc (0x281237);
  42
  43   value3 = get_rusage_data ();
  44
  45   if (value1 == 0 && value2 == 0 && value3 == 0)
  46     {
  47       fprintf (stderr, "Skipping test: no way to determine data segment size\n");
  48       return 77;
  49     }
  50   else if (is_running_under_qemu_user ())
  51     {
  52       fprintf (stderr, "Skipping test: running under QEMU\n");
  53       return 77;
  54     }
  55   else
  56     {
  57       /* The data segment size is positive, except possibly at the beginning.  */
  58       ASSERT (value2 > 0);
  59
  60       /* Allocating memory should not decrease the data segment size.  */
  61       ASSERT (value2 >= value1);
  62       ASSERT (value3 >= value2);
  63
  64 #if !(__GLIBC__ == 2 || MUSL_LIBC || (defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __DragonFly__ || defined __NetBSD__ || defined __OpenBSD__ || defined _WIN32 || defined __CYGWIN__)
  65       /* Allocating 2.5 MB of memory should increase the data segment size.  */
  66       ASSERT (value3 > value1);
  67 #endif
  68
  69       return test_exit_status;
  70     }
  71 }