GUID不是唯一的简单证明

Kai，我提供了一个程序，该程序可以使用线程来完成您想做的事情。它根据以下条款获得许可：您必须为运行它的每个CPU内核每小时向我支付$
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using System;using System.Collections.Generic;using System.Linq;namespace GuidCollisionDetector{    class Program    {        static void Main(string[] args)        { //var reserveSomeRam = new byte[1024 * 1024 * 100];     // This indeed has no effect. Console.WriteLine("{0:u} - Building a bigHeapOGuids.", DateTime.Now); // Fill up memory with guids. var bigHeapOGuids = new HashSet<Guid>(); try {     do     {         bigHeapOGuids.Add(Guid.NewGuid());     } while (true); } catch (OutOfMemoryException) {     // Release the ram we allocated up front.     // Actually, these are pointless too.     //GC.KeepAlive(reserveSomeRam);     //GC.Collect(); } Console.WriteLine("{0:u} - Built bigHeapOGuids, contains {1} of them.", DateTime.Now, bigHeapOGuids.LongCount()); // Spool up some threads to keep checking if there's a match. // Keep running until the heat death of the universe. for (long k = 0; k < Int64.MaxValue; k++) {     for (long j = 0; j < Int64.MaxValue; j++)     {         Console.WriteLine("{0:u} - Looking for collisions with {1} thread(s)....", DateTime.Now, Environment.ProcessorCount);         System.Threading.Tasks.Parallel.For(0, Int32.MaxValue, (i) =>         {  if (bigHeapOGuids.Contains(Guid.NewGuid()))      throw new ApplicationException("Guids collided! Oh my gosh!");         }         );         Console.WriteLine("{0:u} - That was another {1} attempts without a collision.", DateTime.Now, ((long)Int32.MaxValue) * Environment.ProcessorCount);     } } Console.WriteLine("Umm... why hasn't the universe ended yet?");        }    }}

PS：我想尝试一下Parallel扩展库。那很简单。

并且使用OutOfMemoryException作为控制流只是感觉不对。

编辑

好吧，看来这仍然吸引了选票。所以我已经解决了GC.KeepAlive（）问题。并将其更改为与C＃4一起运行。

为了阐明我的支持条款：仅在2010年2月28日提供支持。请仅使用时间机器在当天发出支持请求。

编辑2 与往常一样，GC在管理内存方面比我做得更好。我自己以前做过的任何尝试都注定要失败。