昨天在开发前置的时候,出现了这样的一个问题,当主服务一启动就会出现cpu100%的情况,修改之前的代码如下:

public class MsgHandleThread extends Thread {

 private static Log log = LogFactory.getLog(MsgHandleThread.class);

 
 public void run() {
  while (true) {
   MessageSyncQueue msgQueue = QueueManager.getMsgQueue();
   if (msgQueue == null) {
    try {
     Thread.sleep(1000);
    } catch (InterruptedException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
    break;
   }
   TaskBean taskBean = msgQueue.pop();
   if (taskBean != null) {
    int taskBeanStatus = taskBean.getBeanStatus();
    log.info("[" + taskBean.getRequestBean().getWebStreamid()
      + "]进入循环线程,status=[" + taskBeanStatus +"]");
    switch (taskBeanStatus) {
    //0:初始状态、调用过滤线程进行预处理
    case Global.STATUS_0:
     new RequestFiltrateThread(taskBean).start();
     break;
    //1:经过预处理、需要调用实际处理线程进行处理
    case Global.STATUS_1:
     new CoreProcessThread(taskBean).start();
     break;
    //2:经过处理后需要返回的任务
    case Global.STATUS_2:
     new ResponseHandleThread(taskBean).start();
     break;
    }
   }
  }
 }
 
}

 

修改之后的代码为:

public class MsgHandleThread extends Thread {

 private static Log log = LogFactory.getLog(MsgHandleThread.class);

 private static MessageSyncQueue msgQueue = QueueManager.getMsgQueue();
 
 public void run() {
 
  while (true) {
   if (msgQueue == null) {
    log.info("msgQueue初始化为空");
    break;
   }
   TaskBean taskBean = msgQueue.pop();
   if (taskBean != null) {
    int taskBeanStatus = Integer.parseInt(taskBean.getBeanStatus());
    log.info("[" + taskBean.getRequestBean().getWebStreamid()
      + "]进入循环线程,status=[" + taskBeanStatus +"]");
    switch (taskBeanStatus) {
    //0:初始状态、调用过滤线程进行预处理
    case Global.STATUS_0:
     new RequestFiltrateThread(taskBean).start();
     break;
    //1:经过预处理、需要调用实际处理线程进行处理
    case Global.STATUS_1:
     new CoreProcessThread(taskBean).start();
     break;
    //2:经过处理后需要返回的任务
    case Global.STATUS_2:
     new ResponseHandleThread(taskBean).start();
     break;
    }
   }
   try {
    Thread.sleep(Long.parseLong(PropertiesContext.instance.getMsgqueue_scan_interval()));
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
 }
 
}

最开始队列为空,却一直在读,就会进入死循环,需要过一段时间再去读,等到有元素之后再去读。