| 提交 | 用户 | age | ||
| d4fa52 | 1 | package com.hx.util.thread; |
| C | 2 | |
| 3 | import lombok.Setter; | |
| 4 | import org.slf4j.Logger; | |
| 5 | import org.slf4j.LoggerFactory; | |
| 6 | ||
| 7 | import java.util.concurrent.LinkedBlockingDeque; | |
| 8 | import java.util.concurrent.LinkedBlockingQueue; | |
| 9 | import java.util.concurrent.ThreadPoolExecutor; | |
| 10 | import java.util.concurrent.TimeUnit; | |
| 11 | ||
| 12 | ||
| 13 | /** | |
| 14 | * 创建线程池的，主要避免线程队列超，导致服务器爆了 | |
| 15 | */ | |
| 16 | public class ExecutorServiceTool { | |
| 17 | ||
| 18 | /**log4j日志*/ | |
| 19 | private static final Logger logger = LoggerFactory.getLogger(ExecutorServiceTool.class.getName()); | |
| 20 | ||
| 21 | /**线程池-获取队列的*/ | |
| 22 | private ThreadPoolExecutor threadPool; | |
| 23 | /**最大队列*/ | |
| 24 | private int maxQueue; | |
| 25 | /**最大线程数*/ | |
| 26 | private int maxTread; | |
| 27 | /**创建队列*/ | |
| 28 | private ThreadTaskLinkedBlockingDeque<Runnable> queue = new ThreadTaskLinkedBlockingDeque<>(); | |
| 29 | ||
| 30 | public ExecutorServiceTool() { | |
| 31 | } | |
| 32 | ||
| 33 | public ExecutorServiceTool(int initTread, int maxQueue) { | |
| 34 | createThread(initTread,maxQueue); | |
| 35 | } | |
| 36 | ||
| 37 | public ExecutorServiceTool(int initTread, int maxTread, int maxQueue) { | |
| 38 | this.maxTread = maxTread; | |
| 39 | createThread(initTread,maxTread,maxQueue); | |
| 40 | } | |
| 41 | ||
| 42 | ||
| 43 | /**创建线程池 | |
| 44 | * @param initTread 初始化线程池 | |
| 45 | * @param maxQueue 最大队列新增队列，注意：这里只做传值，不限制真对 | |
| 46 | * 线程池限制队列，因为限制了会报错，导致数据丢失 | |
| 47 | * @return 线程池 | |
| 48 | */ | |
| 49 | public ThreadPoolExecutor createThread(int initTread,int maxQueue){ | |
| 50 | this.threadPool = new ThreadPoolExecutor(initTread, initTread, | |
| 51 | 60L, TimeUnit.SECONDS, | |
| 52 | new LinkedBlockingQueue<Runnable>()); | |
| 53 | this.maxQueue = maxQueue; | |
| 54 | return this.threadPool; | |
| 55 | } | |
| 56 | ||
| 57 | /**创建线程池 | |
| 58 | * @param initTread 初始化线程池 | |
| 59 | * @param initTread 最大线程数 | |
| 60 | * @param maxQueue 最大队列新增队列，注意：这里只做传值，不限制真对 | |
| 61 | * 线程池限制队列，因为限制了会报错，导致数据丢失 | |
| 62 | * @return 线程池 | |
| 63 | */ | |
| 64 | public ThreadPoolExecutor createThread(int initTread,int maxTread,int maxQueue){ | |
| 65 | this.threadPool = new ThreadPoolExecutor(initTread,maxTread,60L,TimeUnit.SECONDS,queue); | |
| 66 | this.maxQueue = maxQueue; | |
| 67 | return this.threadPool; | |
| 68 | } | |
| 69 | ||
| c2bb89 | 70 | /**循环校验队列数量模式，针对最大的队列，返回true就是可以加入队列 |
| C | 71 | * 避免死循环，设置了循环校验次数 |
| 72 | * @param sleepMillisecond 睡眠，毫秒秒,如果是空的，那么直接返回 | |
| 73 | * @param frequency 循环校验次数，空值默认100次数 | |
| 74 | * @return 最后都是返回true | |
| 75 | */ | |
| 76 | public boolean whileCheckQueue(Integer sleepMillisecond,Integer frequency){ | |
| 77 | if(frequency == null){ | |
| 78 | frequency = 100; | |
| 79 | } | |
| 80 | while (frequency>0){ | |
| 81 | if(!noRund(sleepMillisecond)){ | |
| 82 | return true; | |
| 83 | } | |
| 84 | frequency--; | |
| 85 | } | |
| 86 | return true; | |
| 87 | } | |
| 88 | ||
| d4fa52 | 89 | /**针对最大的队列，如果没有超过返回是false的，超过就返回是true的 |
| C | 90 | * 单返回true的时候，就不要传入队列了 |
| 91 | * @param sleepMillisecond 睡眠，毫秒秒,如果是空的，那么直接返回 | |
| 92 | * @return 如果没有超过返回是false的，超过就返回是true的 | |
| 93 | */ | |
| 94 | public boolean noRund(Integer sleepMillisecond){ | |
| 95 | if(threadPool.getQueue().size() > maxQueue){ | |
| 96 | if(sleepMillisecond != null && sleepMillisecond > 0){ | |
| 97 | try{ | |
| 98 | Thread.sleep(sleepMillisecond); | |
| 99 | }catch (Exception e){ | |
| 100 | logger.error("线程池开启睡眠失败！"); | |
| 101 | } | |
| 102 | } | |
| 103 | return true; | |
| 104 | }else{ | |
| 105 | return false; | |
| 106 | } | |
| 107 | } | |
| 108 | ||
| 109 | /**关闭*/ | |
| 110 | public void shutdown(){ | |
| 111 | this.threadPool.shutdown(); | |
| 112 | } | |
| 113 | ||
| 114 | /** | |
| 115 | * 自定义线程任务阻塞队列. 在活跃线程数小于最大支持线程数的情况下，新任务不放到队列从而激发线程池创建新线程及时处理. | |
| 116 | * 解决使用LinkedBlockingDeque无限队列，线程池只有核心线程在处理。maximumPoolSize未启作用的问题。 | |
| 117 | * | |
| 118 | * @author chenjiahe | |
| 119 | */ | |
| 120 | @Setter | |
| 121 | private class ThreadTaskLinkedBlockingDeque<E> extends LinkedBlockingDeque<E> { | |
| 122 | @Override | |
| 123 | public boolean offer(E e) { | |
| 124 | int activeThreadNum = threadPool.getActiveCount(); | |
| 125 | if (activeThreadNum < maxTread) { | |
| 126 | return false; | |
| 127 | } | |
| 128 | return offerLast(e); | |
| 129 | } | |
| 130 | } | |
| 131 | ||
| 132 | /****************************************************************************************/ | |
| 133 | ||
| 134 | public int getMaxQueue() { | |
| 135 | return maxQueue; | |
| 136 | } | |
| 137 | ||
| 138 | public void setMaxQueue(int maxQueue) { | |
| 139 | this.maxQueue = maxQueue; | |
| 140 | } | |
| 141 | ||
| 142 | public ThreadPoolExecutor getThreadPool() { | |
| 143 | return threadPool; | |
| 144 | } | |
| 145 | ||
| 146 | public void setThreadPool(ThreadPoolExecutor threadPool) { | |
| 147 | this.threadPool = threadPool; | |
| 148 | } | |
| 149 | ||
| 150 | } | |
