peipei-backend/play-common/src/main/java/com/starry/common/utils/ThreadsUtils.java

package com.starry.common.utils;

import java.util.concurrent.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author admin 线程相关工具类
 * @since 2022/7/25
 */
public class ThreadsUtils {
    private static final Logger logger = LoggerFactory.getLogger(ThreadsUtils.class);

    /**
     * 停止线程池 先使用shutdown, 停止接收新任务并尝试完成所有已存在任务. 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. 如果仍然超時，則強制退出. 另对在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();
            }
        }
    }

    /**
     * 打印线程异常信息
     */
    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);
        }
    }
}