1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150
|
using System;
using System.IO;
using System.IO.Compression;
using System.Threading;
using System.Collections.Generic;
using System.Linq;
namespace TestThreads
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Attempt with threads");
MyThreadPool<string> pool = new MyThreadPool<string>();
string[] files = Directory.GetFiles(@"c:\cygwin64", "*.*", SearchOption.AllDirectories);
for (int i = 0, cpt = files.Length; i < cpt; ++i)
{
pool.Enqueue(files[i]);
}
pool.DoWork((string s) =>
{
Console.WriteLine(s);
Thread.Sleep(100);
});
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<T> : Queue<T> where T:class
{
public delegate void JobDelegate(T param);
struct JobInfo
{
public JobDelegate Job;
public T Param;
public Thread Thread;
}
int MaxWorkers;
List<Thread> Workers = null;
Semaphore Sem = null;
public MyThreadPool() : this(Environment.ProcessorCount)
{
}
public MyThreadPool(int maxWorkers)
{
if (maxWorkers < 1) maxWorkers = 1;
MaxWorkers = maxWorkers;
Workers = new List<Thread>(MaxWorkers);
}
public void DoWork(JobDelegate job)
{
Sem = new Semaphore(MaxWorkers, MaxWorkers);
while (Count > 0)
{
Thread thread;
Console.WriteLine("Waits for a free worker");
Sem.WaitOne();
thread = new Thread(DoJob);
lock(Workers)
{
Workers.Add(thread);
}
thread.Priority = ThreadPriority.BelowNormal;
thread.Start(new JobInfo()
{
Job = job,
Param = Dequeue(),
Thread = thread
});
}
do
{
Thread thread;
lock (Workers)
{
thread = Workers.FirstOrDefault();
}
if (thread == null)
{
// thread can only be null when Workers list is empty
// => No more thread to wait.
break;
}
else
{
Console.WriteLine("Wait for the worker to ends");
thread.Join();
}
} while (true);
}
private void DoJob(object param)
{
JobInfo info = (JobInfo)param;
try
{
info.Job(info.Param);
}
finally
{
Sem.Release();
}
lock(Workers)
{
Workers.Remove(info.Thread);
}
}
}
} |
Partager