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src/com/ectrip/cyt/utils/ThreadUtils.java 1.99 KB
07670a44   黄灿宏   畅游通核销app: 1.增加日志上...
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  package com.ectrip.cyt.utils;
  
  import java.util.concurrent.LinkedBlockingDeque;
  import java.util.concurrent.ThreadPoolExecutor;
  import java.util.concurrent.TimeUnit;
  
  public class ThreadUtils {
      private static ThreadPool instance;
  
      private ThreadUtils() {
      }
  
      public static ThreadPool getInstance() {
          if (instance == null) {
              synchronized (ThreadUtils.class) {
                  if ((instance == null)) {
                      int cpuCount = Runtime.getRuntime().availableProcessors(); // 获取cpu数量,即核数
                      int threadCount = cpuCount * 2 + 1; //线程池中线程的个数---cpu核数*2+1--性能最佳
                      LogUtil.i("ThreadUtils", "ThreadUtils count == " + threadCount);
                      instance = new ThreadPool(threadCount, threadCount, 0L);
  
                  }
              }
          }
          return instance;
      }
  
      public static class ThreadPool {
          private int corePoolSize;
          private int maximunPoolSize;
          private long keepAliveTime;
  
          private ThreadPoolExecutor executor;
  
          public ThreadPool(int corePoolSize, int maximunPoolSize, long keepAliveTime) {
              this.corePoolSize = corePoolSize;
              this.maximunPoolSize = maximunPoolSize;
              this.keepAliveTime = keepAliveTime;
          }
  
          public void exeute(Runnable runnable) {
              if (executor == null) {
                  executor = new ThreadPoolExecutor(corePoolSize,
                          maximunPoolSize, keepAliveTime, TimeUnit.SECONDS,
                          new LinkedBlockingDeque<Runnable>(),
                          new ThreadPoolExecutor.AbortPolicy());
  
              }
              executor.execute(runnable);
          }
  
          public void cancel(Runnable r) {
              if (executor != null) {
                  executor.getQueue().remove(r);
              }
          }
  
          public void close() {
              if (executor != null) {
                  executor.shutdownNow();
              }
          }
      }
  }