package com.cooly; import java.util.linkedlist; /** * @author coolyqq *模拟打印打印机排队打印 *分发类 */ public class datadistribute { private static datadistribute instance = null; private final static byte[] obj = new byte[0];//锁机制 private linkedlist<datadistributeentity> tasks = null;//分发任务 private boolean iscolse = true; private datadistribute() { tasks = new linkedlist<datadistributeentity>(); } /** * @return * 获取instance */ public static datadistribute getinstance(){ if(instance == null){ synchronized (obj) { if(instance == null){ instance = new datadistribute(); } } } return instance ; } /** * @param entity * 添加任务 */ public void addtask(datadistributeentity entity){ synchronized (obj) { tasks.add(entity); } } /** * @param entity * 立即添加任务 */ public void addspeedtask(datadistributeentity entity){ synchronized (obj) { tasks.addfirst(entity); } } public void start(icallback callback){ if(tasks==null||tasks.isempty()||!this.iscolse){ return; }else{ this.iscolse = false; } while(true){ datadistributeentity entity = tasks.poll(); if(entity==null){ this.iscolse = true; break; } callback.call(entity); tasks.remove(entity); } system.out.println("fsf"); } public boolean iscolse() { return iscolse; } public void setcolse(boolean iscolse) { this.iscolse = iscolse; } }
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