| 提交 | 用户 | 时间 | ||
| fd2207 | 1 | package com.jcdm.common.utils; |
| 懒 | 2 | |
| 3 | import java.util.concurrent.CancellationException; | |
| 4 | import java.util.concurrent.ExecutionException; | |
| 5 | import java.util.concurrent.ExecutorService; | |
| 6 | import java.util.concurrent.Future; | |
| 7 | import java.util.concurrent.TimeUnit; | |
| 8 | import org.slf4j.Logger; | |
| 9 | import org.slf4j.LoggerFactory; | |
| 10 | ||
| 11 | /** | |
| 12 | * 线程相关工具类. | |
| 13 | * | |
| 14 | * @author jc | |
| 15 | */ | |
| 16 | public class Threads | |
| 17 | { | |
| 18 | private static final Logger logger = LoggerFactory.getLogger(Threads.class); | |
| 19 | ||
| 20 | /** | |
| 21 | * sleep等待,单位为毫秒 | |
| 22 | */ | |
| 23 | public static void sleep(long milliseconds) | |
| 24 | { | |
| 25 | try | |
| 26 | { | |
| 27 | Thread.sleep(milliseconds); | |
| 28 | } | |
| 29 | catch (InterruptedException e) | |
| 30 | { | |
| 31 | return; | |
| 32 | } | |
| 33 | } | |
| 34 | ||
| 35 | /** | |
| 36 | * 停止线程池 | |
| 37 | * 先使用shutdown, 停止接收新任务并尝试完成所有已存在任务. | |
| 38 | * 如果超时, 则调用shutdownNow, 取消在workQueue中Pending的任务,并中断所有阻塞函数. | |
| 39 | * 如果仍然超時，則強制退出. | |
| 40 | * 另对在shutdown时线程本身被调用中断做了处理. | |
| 41 | */ | |
| 42 | public static void shutdownAndAwaitTermination(ExecutorService pool) | |
| 43 | { | |
| 44 | if (pool != null && !pool.isShutdown()) | |
| 45 | { | |
| 46 | pool.shutdown(); | |
| 47 | try | |
| 48 | { | |
| 49 | if (!pool.awaitTermination(120, TimeUnit.SECONDS)) | |
| 50 | { | |
| 51 | pool.shutdownNow(); | |
| 52 | if (!pool.awaitTermination(120, TimeUnit.SECONDS)) | |
| 53 | { | |
| 54 | logger.info("Pool did not terminate"); | |
| 55 | } | |
| 56 | } | |
| 57 | } | |
| 58 | catch (InterruptedException ie) | |
| 59 | { | |
| 60 | pool.shutdownNow(); | |
| 61 | Thread.currentThread().interrupt(); | |
| 62 | } | |
| 63 | } | |
| 64 | } | |
| 65 | ||
| 66 | /** | |
| 67 | * 打印线程异常信息 | |
| 68 | */ | |
| 69 | public static void printException(Runnable r, Throwable t) | |
| 70 | { | |
| 71 | if (t == null && r instanceof Future<?>) | |
| 72 | { | |
| 73 | try | |
| 74 | { | |
| 75 | Future<?> future = (Future<?>) r; | |
| 76 | if (future.isDone()) | |
| 77 | { | |
| 78 | future.get(); | |
| 79 | } | |
| 80 | } | |
| 81 | catch (CancellationException ce) | |
| 82 | { | |
| 83 | t = ce; | |
| 84 | } | |
| 85 | catch (ExecutionException ee) | |
| 86 | { | |
| 87 | t = ee.getCause(); | |
| 88 | } | |
| 89 | catch (InterruptedException ie) | |
| 90 | { | |
| 91 | Thread.currentThread().interrupt(); | |
| 92 | } | |
| 93 | } | |
| 94 | if (t != null) | |
| 95 | { | |
| 96 | logger.error(t.getMessage(), t); | |
| 97 | } | |
| 98 | } | |
| 99 | } | |
