Csharp/CSharp Tutorial/Thread/Thread Priority

Материал из .Net Framework эксперт
Версия от 12:20, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Thread priorities.

using System; 
using System.Threading; 
 
class MyThread { 
  public int count; 
  public Thread thrd; 
 
  public MyThread(string name) { 
    count = 0; 
    thrd = new Thread(this.run); 
    thrd.Name = name; 
  } 
 
  void run() { 
    Console.WriteLine(thrd.Name + " starting."); 
    do { 
      count++; 
 
        Console.WriteLine("In " + thrd.Name); 
    } while(count < 10000); 
 
    Console.WriteLine(thrd.Name + " terminating."); 
  } 
} 
 
class PriorityDemo { 
  public static void Main() { 
    MyThread mt1 = new MyThread("High Priority"); 
    MyThread mt2 = new MyThread("Low Priority"); 
 
    mt1.thrd.Priority = ThreadPriority.AboveNormal; 
    mt2.thrd.Priority = ThreadPriority.BelowNormal; 
 
    mt1.thrd.Start(); 
    mt2.thrd.Start(); 
 
    mt1.thrd.Join(); 
    mt2.thrd.Join(); 
 
    Console.WriteLine(); 
    Console.WriteLine(mt1.thrd.Name + " thread counted to " + mt1.count); 
    Console.WriteLine(mt2.thrd.Name + " thread counted to " + mt2.count); 
  } 
}
High Priority starting.
In High Priority
In High Priority
In High Priority
In High Priority
...
^CTerminate batch job (Y/N)? n

Thread priorities: ThreadPriority.Highest, ThreadPriority.Lowest

using System;
using System.Threading;
class MainClass
{
  public static void Countdown() 
  {
    for (int i = 10; i > 0; i--) 
    {
      Console.Write(i.ToString() + " ");
    }
  }
  public static void Main() 
  {
    Thread t2 = new Thread(new ThreadStart(Countdown));
    t2.Priority=ThreadPriority.Highest;
    Thread.CurrentThread.Priority=ThreadPriority.Lowest;
    t2.Start();
  }
}
10 9 8 7 6 5 4 3 2 1

User Thread: Name, ApartmentState, IsAlive, Priority, ThreadState

using System;
using System.Threading;
class MainClass
{
  static void MyThreadProc()
  {
    Thread.CurrentThread.Name = "TheSecondaryThread";
    Thread secondaryThread = Thread.CurrentThread;
    Console.WriteLine("Name? {0}", secondaryThread.Name);
    Console.WriteLine("Alive? {0}", secondaryThread.IsAlive);
    Console.WriteLine("Priority? {0}", secondaryThread.Priority);      
    Console.WriteLine("State? {0}", secondaryThread.ThreadState);
    Console.WriteLine();
    for(int i = 0; i < 1000; i ++)
    {
      Console.WriteLine("Value of i is: {0}", i);
      Thread.Sleep(5);
    }
  }
  [MTAThread]
  static void Main(string[] args)
  {
    // Start a new worker thread.
    Thread secondaryThread = new Thread(new ThreadStart(MyThreadProc));
    secondaryThread.Priority = ThreadPriority.Highest;
    secondaryThread.Start();
  }
}
Name? TheSecondaryThread
Alive? True
Priority? Highest
State? Running
Value of i is: 0
Value of i is: 1
Value of i is: 2
Value of i is: 3
Value of i is: 4
Value of i is: 5
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^CTerminate batch job (Y/N)? n