线程池-invokeAll

invokeAll

invoke类方法invokeAll和invokeAny与submit方法方法最大的区别是submit是异步的其不会等待任务的完成，而invoke方法是同步的，其需要等待任务的完成，才能返回

public class InvokeAll {
    private static final Logger LOGGER = LoggerFactory.getLogger(InvokeAll.class);

    public static void main(String[] args) throws InterruptedException, ExecutionException {
        int poolSize = 2;
        ExecutorService executorService = Executors.newFixedThreadPool(poolSize);
        List workerList = new ArrayList<>();
        for (int i = 0; i < poolSize * 2; i++) {
            workerList.add(new CallableWorker());
        }
        List> futureList = executorService.invokeAll(workerList);
        executorService.shutdown();
        LOGGER.info("线程池已经被关闭");
        for (Future future : futureList) {
            CallerHandle handle = future.get();
            LOGGER.info(handle.getThreadName()+"已经完成");
        }
        LOGGER.info("主线程结束");
    }
}

21:49:37.046  INFO (CallableWorker.java:20) - pool-1-thread-2 结束任务
21:49:37.046  INFO (CallableWorker.java:20) - pool-1-thread-1 结束任务
21:49:39.055  INFO (CallableWorker.java:20) - pool-1-thread-1 结束任务
21:49:39.055  INFO (CallableWorker.java:20) - pool-1-thread-2 结束任务
21:49:39.059  INFO (InvokeAll.java:29) - 线程池已经被关闭
21:49:39.059  INFO (InvokeAll.java:32) - pool-1-thread-1已经完成
21:49:39.059  INFO (InvokeAll.java:32) - pool-1-thread-2已经完成
21:49:39.059  INFO (InvokeAll.java:32) - pool-1-thread-2已经完成
21:49:39.059  INFO (InvokeAll.java:32) - pool-1-thread-1已经完成
21:49:39.059  INFO (InvokeAll.java:34) - 主线程结束