Merge branch 'master' of https://gitee.com/y_project/RuoYi-Vue

疯狂的狮子li

2020-02-18 a1cf719d268a9d16db81ece94e75037c844f898f

 ruoyi/src/main/java/com/ruoyi/common/utils/Threads.java

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@@ -0,0 +1,99 @@
package com.ruoyi.common.utils;

import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * çº¿ç¨‹ç›¸å…³å·¥å…·ç±».
 * 
 * @author ruoyi
 */
public class Threads
{
    private static final Logger logger = LoggerFactory.getLogger(Threads.class);

    /**
     * sleep等待,单位为毫秒
     */
    public static void sleep(long milliseconds)
    {
        try
        {
            Thread.sleep(milliseconds);
        }
        catch (InterruptedException e)
        {
            return;
        }
    }

    /**
     * åœæ­¢çº¿ç¨‹æ± 
     * å…ˆä½¿ç”¨shutdown, åœæ­¢æŽ¥æ”¶æ–°ä»»åŠ¡å¹¶å°è¯•å®Œæˆæ‰€æœ‰å·²å­˜åœ¨ä»»åŠ¡.
     * å¦‚果超时, åˆ™è°ƒç”¨shutdownNow, å–消在workQueue中Pending的任务,并中断所有阻塞函数.
     * å¦‚果仍人超時，則強制退出.
     * å¦å¯¹åœ¨shutdown时线程本身被调用中断做了处理.
     */
    public static void shutdownAndAwaitTermination(ExecutorService pool)
    {
        if (pool != null && !pool.isShutdown())
        {
            pool.shutdown();
            try
            {
                if (!pool.awaitTermination(120, TimeUnit.SECONDS))
                {
                    pool.shutdownNow();
                    if (!pool.awaitTermination(120, TimeUnit.SECONDS))
                    {
                        logger.info("Pool did not terminate");
                    }
                }
            }
            catch (InterruptedException ie)
            {
                pool.shutdownNow();
                Thread.currentThread().interrupt();
            }
        }
    }

    /**
     * æ‰“印线程异常信息
     */
    public static void printException(Runnable r, Throwable t)
    {
        if (t == null && r instanceof Future<?>)
        {
            try
            {
                Future<?> future = (Future<?>) r;
                if (future.isDone())
                {
                    future.get();
                }
            }
            catch (CancellationException ce)
            {
                t = ce;
            }
            catch (ExecutionException ee)
            {
                t = ee.getCause();
            }
            catch (InterruptedException ie)
            {
                Thread.currentThread().interrupt();
            }
        }
        if (t != null)
        {
            logger.error(t.getMessage(), t);
        }
    }
}