engine.java~3~

源代码统计软件

package stat;


/**
 * <p>Title: sms_statistics</p>
 * <p>Description:  短信服务平台计费统计程序</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company:
 * </p>
 * @author [e-mail]
 * @version 1.0
 */


public class Engine extends Thread
{
        //引擎状态
  //  ------------------------------------------------
  //                  RUNNING（运行状态）
  //  ------------------------------------------------
  //          |                         |
  //  ------------------------------------------------
  //  ACCELERATE（加速状态）    DECELERATE（减速状态）
  //  ------------------------------------------------
  //          |                         |
  //  ------------------------------------------------
  //                  STOPPED（停止状态）
  //  ------------------------------------------------
  //
        public final static int THREAD_ACCELERATE	= 0;
        public final static int THREAD_RUNNING		= 1;
        public final static int THREAD_DECELERATE	= 2;
        public final static int THREAD_STOPPED		= 3;
        public String engineName;

        //引擎状态
        public int m_nStatus = THREAD_STOPPED;

        public Engine(String strName)
        {
                super(strName);
                this.engineName=strName;
                this.setDaemon(true);
        }

        public boolean isRunning()
        {
                if(m_nStatus == THREAD_RUNNING)
                {
                        return true;
                }

                return false;
        }

        public boolean isStopped()
        {
                if(m_nStatus == THREAD_STOPPED)
                {
                        return true;
                }

                return false;
        }

        public void startup()
        {
                if(m_nStatus == THREAD_ACCELERATE || m_nStatus == THREAD_RUNNING)
                {
                        return;
                }

                m_nStatus = THREAD_RUNNING;
                start();
        }

        public void shutdown()
        {
                if(m_nStatus == THREAD_DECELERATE || m_nStatus == THREAD_STOPPED)
                {
                        return;
                }

                m_nStatus = THREAD_DECELERATE;
        }

        public void sleep(int s){
                try
                {
                        Thread.sleep(s);
                }
                catch(Exception e)
                {
                        //Config.log.log(e,this.engineName+".sleep : unepected exit !");
                }
        }

        public void sleep()
        {
                try
                {
                        Thread.sleep(1000);
                }
                catch(Exception e)
                {
                        //Config.log.log(e,this.engineName+".sleep : unepected exit !");
                }
        }

        public void nap()
        {

                try
                {
                        Thread.sleep(5);
                }
                catch(Exception e)
                {
                        //Config.log.log(e,this.engineName+".nap : unepected exit !");
                }
        }

        public void wait(Engine engine)
        {
                int nStatus = engine.m_nStatus;

                //如果线程已经停止或者已经启动，则不需要再等待状态变化。
                if(nStatus == THREAD_STOPPED || nStatus == THREAD_RUNNING)
                {
                        return;
                }

                //等待线程的状态发生变化。
                long lStartTime = System.currentTimeMillis();
                while(engine.m_nStatus == nStatus)
                {
                        if(TimeConfig.DEFAULT_WAIT_TIME > 0 &&
                                System.currentTimeMillis() - lStartTime > TimeConfig.DEFAULT_WAIT_TIME)
                        {
                                break;
                        }

                        //稍等
                        nap();
                }
        }

        public String toString(){
                return this.engineName;
        }
}