(五)线程–定制线程及设置和获取线程的优先级别-.NET教程,算法/线程

(一).描述
   此示例演示怎样定制一个线程，并且设置线程的主要属性和获取线程运行时的状态
(二).代码

   using system;
using system.threading;
namespace 定制线程
{
 //委托声明(函数签名)
 //delegate string mymethoddelegate();
 class myclass
 {  
  public static void method1()
  {
   int i;
   for(i=0;i<10;i++)
   {
    console.writeline(“method1 at :” + i.tostring());
    
    //当线程停止/失败或未启动时isalive值为:false,否则为:true;
    console.writeline(”    isalive is ” + thread.currentthread.isalive.tostring()+” “);    
               
    //是否是后台进程
    console.writeline(”    isbackground is ” + thread.currentthread.isbackground.tostring()+” “);    
    
    //线程名称
    console.writeline(”    name is ” + thread.currentthread.name.tostring()+” “);    
    
    //优先级
    console.writeline(”    priority is ” + thread.currentthread.priority.tostring()+” “);    
    
    //threadstate值组合，有：启动/运行/等待/是否是后台线程等状态. 通过此属性来判断该线程是否完成任务.
    console.writeline(”    threadstate is ” + thread.currentthread.threadstate.tostring()+”\n\n “);    

    delaytime(1);  //延长时间，模拟执行任务
   }
  }
  public static void method2()
  {
   int i;
   for(i=0;i<10;i++)
   {
    console.write(“method2 at :” + i.tostring());

    //当线程停止/失败或未启动时isalive值为:false,否则为:true;
    console.writeline(”    isalive is ” + thread.currentthread.isalive.tostring()+” “);    
               
    //是否是后台进程
    console.writeline(”    isbackground is ” + thread.currentthread.isbackground.tostring()+” “);    
    
    //线程名称
    console.writeline(”    name is ” + thread.currentthread.name.tostring()+” “);    
    
    //优先级
    console.writeline(”    priority is ” + thread.currentthread.priority.tostring()+” “);    
    
    //threadstate值组合，有：启动/运行/等待/是否是后台线程等状态. 通过此属性来判断该线程是否完成任务.
    console.writeline(”    threadstate is ” + thread.currentthread.threadstate.tostring()+”\n\n “);           

    delaytime(1);  //延长时间，模拟执行任务
   }
  }
  private static void delaytime(int n)
  {
   datetime starttime = datetime.now;
   while(starttime.addseconds(n) > datetime.now)
   {
    //延长时间,模拟实际中的进程
   }
  }

  [stathread]
  static void main(string[] args)
  {          
//   mymethoddelegate d1 = new mymethoddelegate(myclass.method1);
//   mymethoddelegate d2 = new mymethoddelegate(myclass.method2);
   
   thread thread1 = new thread(new threadstart(method1));
   thread1.name = “a”;   //给线程定义名称
   //threadpriority枚举共五种优先级,由高->低依次为: highest->abovenormal->normal->belownormal->lowest
   //优先级高的先优先执行,相同优先级的线程具有相同对cpu争夺权力
   thread1.priority = threadpriority.highest;

            thread thread2 = new thread(new threadstart(method2));   
   thread2.name = “b”;
   thread2.priority = threadpriority.normal;

            thread1.start();
   thread2.start();
   console.read();
  }
 }
}

本示例代码已经测试，能够正常运行!