mono/tests/bug-17590.cs

   1 /*
   2  * The string portion of this test crashes on Boehm (and there might
   3  * not be much we can do about that - I haven't looked into it), and
   4  * the array portions are unbearably slow, so it's only run on SGen.
   5  */
   6
   7 using System;
   8
   9 class X
  10 {
  11         public static void Test (Action<int> allocator)
  12         {
  13                 for (int i = 0; i < 1000; ++i)
  14                 {
  15                         bool caught = false;
  16                         try
  17                         {
  18                                 //Console.WriteLine ("allocating with " + i);
  19                                 allocator (i);
  20                         }
  21                         catch (OutOfMemoryException)
  22                         {
  23                                 caught = true;
  24                         }
  25                         /*
  26                         if (!caught)
  27                         {
  28                                 Console.WriteLine ("WTF?");
  29                                 //Environment.Exit (1);
  30                         }
  31                         */
  32                 }
  33         }
  34
  35         public static void Ignore<T> (T x)
  36         {
  37         }
  38
  39         public static void ProbeArray<T> (T[] a)
  40         {
  41                 if (a == null)
  42                         return;
  43
  44                 for (int i = 0; i < 1000; ++i)
  45                 {
  46                         a [i] = default (T);
  47                         a [a.Length - i - 1] = default (T);
  48                 }
  49         }
  50
  51         public static void ProbeString (string s)
  52         {
  53                 for (int i = 0; i < 1000; ++i)
  54                 {
  55                         if (s [s.Length - i - 1] != ' ')
  56                                 Environment.Exit (1);
  57                 }
  58         }
  59
  60         public static int Main ()
  61         {
  62                 Console.WriteLine ("byte arrays");
  63                 Test (i => ProbeArray (new byte [int.MaxValue - i]));
  64                 Test (i => ProbeArray (new byte [int.MaxValue - i * 100]));
  65
  66                 Console.WriteLine ("int arrays");
  67                 Test (i => ProbeArray (new int [int.MaxValue / 4 - i]));
  68                 Test (i => ProbeArray (new int [int.MaxValue / 4 - i * 100]));
  69
  70                 Console.WriteLine ("large int arrays");
  71                 Test (i => ProbeArray (new int [int.MaxValue - i]));
  72                 Test (i => ProbeArray (new int [int.MaxValue - i * 100]));
  73
  74                 // FIXME: This commit 4gb of memory
  75                 /*
  76                 Console.WriteLine ("strings");
  77                 Test (i => ProbeString ("abcd".PadRight(int.MaxValue - i)));
  78                 Test (i => ProbeString ("abcd".PadRight(int.MaxValue - i * 100)));
  79                 */
  80
  81                 //Console.WriteLine ("no objects allocated - all good");
  82                 return 0;
  83         }
  84 }