mono/tests/async_read.cs

   1 using System;
   2 using System.IO;
   3 using System.Threading;
   4
   5 class Test {
   6
   7         static int sum = 0;
   8
   9         static void async_callback (IAsyncResult ar)
  10         {
  11                 byte [] buf = (byte [])ar.AsyncState;
  12                 sum += buf [0];
  13         }
  14
  15         static int Main () {
  16                 byte [] buf = new byte [1];
  17                 AsyncCallback ac = new AsyncCallback (async_callback);
  18                 IAsyncResult ar;
  19                 int sum0 = 0;
  20
  21                 FileStream s = new FileStream ("async_read.exe",  FileMode.Open, FileAccess.Read);
  22
  23                 s.Position = 0;
  24                 sum0 = 0;
  25                 while (s.Read (buf, 0, 1) == 1)
  26                         sum0 += buf [0];
  27
  28                 s.Position = 0;
  29
  30                 do {
  31                         ar = s.BeginRead (buf, 0, 1, ac, buf);
  32                 } while (s.EndRead (ar) == 1);
  33                 sum -= buf [0];
  34
  35                 Thread.Sleep (100);
  36
  37                 s.Close ();
  38
  39                 Console.WriteLine ("CSUM: " + sum + " " + sum0);
  40                 if (sum != sum0)
  41                         return 1;
  42
  43                 return 0;
  44         }
  45 }