tests/test-get-rusage-as.c

   1 /* Test of getter for RLIMIT_AS.
   2    Copyright (C) 2011-2017 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 <http://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 "macros.h"
  25
  26 void *memchunk1;
  27 void *memchunk2;
  28
  29 int
  30 main ()
  31 {
  32   uintptr_t value1, value2, value3;
  33
  34   value1 = get_rusage_as ();
  35
  36   memchunk1 = malloc (0x88);
  37
  38   value2 = get_rusage_as ();
  39
  40   memchunk2 = malloc (0x281237);
  41
  42   value3 = get_rusage_as ();
  43
  44   if (value1 == 0 && value2 == 0 && value3 == 0)
  45     {
  46       fprintf (stderr, "Skipping test: no way to determine address space size\n");
  47       return 77;
  48     }
  49   else
  50     {
  51       /* The address space size is positive.  */
  52       ASSERT (value1 > 0);
  53
  54       /* Allocating memory should not decrease the address space size.  */
  55       ASSERT (value2 >= value1);
  56       ASSERT (value3 >= value2);
  57
  58       /* Allocating 2.5 MB of memory should increase the address space size.  */
  59       ASSERT (value3 > value1);
  60
  61       return 0;
  62     }
  63 }