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Computer Language Benchmarks Game      [[ Play ]]

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 performance measurements

Each table row shows performance measurements for this C# Mono program with a particular command-line input value N.

N	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
500,000	2.70	2.75	18,908	476	0% 0% 0% 100%
5,000,000	25.29	25.31	18,912	476	0% 0% 0% 100%
50,000,000	247.26	247.40	18,908	476	0% 0% 0% 100%

Read the ↓ make, command line, and program output logs to see how this program was run.

Read thread-ring benchmark to see what this program should do.

 notes

Mono JIT compiler version 3.0.3 (tarball Tue Feb 12 21:22:20 PST 2013)
LLVM: yes(3.2svn-mono)

An Introduction to Programming with C# Threads (pdf).

 thread-ring C# Mono program source code

/* The Computer Language Benchmarks Game
   http://benchmarksgame.alioth.debian.org/
 * contributed by Isaac Gouy
 */

using System;
using System.Threading;


internal class NamedThread
{
   private int name;
   private AutoResetEvent signal = new AutoResetEvent(false);
   private int token = 0;

   internal NamedThread(int name) {
      this.name = name;
   }

   internal void Run() {
      while (TokenNotDone()) 
         NextThread().TakeToken(token-1);

      if (token == 0) Console.WriteLine(name);
      NextThread().TakeToken(-1);
   }

   private bool TokenNotDone() {
      signal.WaitOne();
      return token > 0;
   }

   internal NamedThread NextThread() {
      return ThreadRing.threadRing[ name % ThreadRing.numberOfThreads ];
   }

   internal void TakeToken(int x) {
      token = x;
      signal.Set();
   }
}


public class ThreadRing
{
   internal const int numberOfThreads = 503;
   internal static NamedThread[] threadRing = new NamedThread[503];

   public static void Main(string[] args) {
      for (int i = 0; i < numberOfThreads; i++){ 
         threadRing[i] = new NamedThread(i+1);
      }

      foreach (NamedThread t in threadRing) 
         new Thread(new ThreadStart(t.Run)).Start(); 

      threadRing[0].TakeToken( int.Parse(args[0]) );
   }
}

 make, command-line, and program output logs

Wed, 13 Feb 2013 12:35:29 GMT

MAKE:
mv threadring.csharp threadring.cs
/usr/local/bin/mcs  -optimize+ -platform:x64 -out:threadring.csharp_run threadring.cs
rm threadring.cs
0.23s to complete and log all make actions

COMMAND LINE:
/usr/local/bin/mono --llvm -O=unsafe threadring.csharp_run 50000000

PROGRAM OUTPUT:
292

<premain>: CommandLine Error: Argument 'misched' defined more than once!
<premain>: CommandLine Error: Argument 'print-machineinstrs' defined more than once!
-simplifycfg: CommandLine Error: Argument 'misched' defined more than once!
-simplifycfg: CommandLine Error: Argument 'print-machineinstrs' defined more than once!

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