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using System;
using System.IO;
using System.IO.Compression;
using System.Threading;
using System.Collections.Generic;
namespace TestThreads
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Attempt with threads");
MyThreadPool pool = new MyThreadPool();
string[] files = Directory.GetFiles(@"c:\in", "*.*", SearchOption.AllDirectories);
for (int i = 0, cpt = files.Length; i < cpt; ++i)
{
pool.Enqueue(files[i]);
}
pool.DoWork();
Console.WriteLine("Main finished");
Console.ReadKey(true);
}
}
static class GZip
{
public static void CompressFile(string param)
{
FileInfo fileToCompress = new FileInfo(param);
using (FileStream originalFileStream = fileToCompress.OpenRead())
{
Console.WriteLine("Compressing {0}.", fileToCompress.FullName);
using (FileStream compressedFileStream = File.Create(fileToCompress.FullName + ".gz"))
{
using (GZipStream compressionStream = new GZipStream(compressedFileStream, CompressionLevel.Optimal))
{
originalFileStream.CopyTo(compressionStream);
}
}
FileInfo info = new FileInfo(fileToCompress.FullName + ".gz");
Console.WriteLine("Compressed {0} from {1} to {2} bytes.", fileToCompress.FullName, fileToCompress.Length.ToString(), info.Length.ToString());
}
fileToCompress.Delete();
}
}
class MyThreadPool : Queue<String>
{
int MaxWorkers;
List<Thread> Workers = null;
public MyThreadPool() : this(Environment.ProcessorCount)
{
}
public MyThreadPool(int maxWorkers)
{
if (maxWorkers < 1) maxWorkers = 1;
MaxWorkers = maxWorkers;
Workers = new List<Thread>(MaxWorkers);
for (int i = 0; i < MaxWorkers; ++i)
{
Workers.Add(null);
}
}
public void DoWork()
{
while (Count > 0)
{
for (int i = 0; i < MaxWorkers; ++i)
{
if (Workers[i] == null || Workers[i].ThreadState == ThreadState.Stopped || Workers[i].ThreadState == ThreadState.Aborted)
{
if (Count > 0)
{
Workers[i] = new Thread(DoJob);
Workers[i].Start(Dequeue());
}
else
{
break;
}
}
}
Console.WriteLine("Waits for a free worker");
Thread.Sleep(100);
}
for (int i = 0; i < MaxWorkers; ++i)
{
if (Workers[i] != null && Workers[i].ThreadState == ThreadState.Running || Workers[i].ThreadState == ThreadState.WaitSleepJoin)
{
Console.WriteLine("Wait for the worker {0} to ends", i);
Workers[i].Join();
}
else if (Workers[i] != null && Workers[i].ThreadState != ThreadState.Stopped)
{
Console.WriteLine("Worker {0} is in a strange state : {1}", i, Workers[i].ThreadState);
}
}
}
private void DoJob(object param)
{
GZip.CompressFile(param as string);
}
}
} |
Comment faire une queue de threads ?
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