我正在以特定的延迟安排任务来处理我的项目:
while (currentPosition < count) {
ExtractItemsProcessor extractItemsProcessor =
getExtractItemsProcessor(currentPosition, currentPositionLogger);
executor.schedule(extractItemsProcessor, waitBetweenProzesses, TimeUnit.SECONDS);
waitBetweenProzesses += sleepTime;
currentPosition += chunkSize;
}
例如,如何安排 3 个任务(有一个具有 3 个线程的执行器(,并且每个线程在完成任务后必须等待 10 秒?
您可以使用返回 ExecutorService的 Executors.newFixedThreadPool(NB_THREADS(。然后使用此执行器服务,您可以提交任务。例:
private static final int NB_THREADS = 3;
public static void main(String[] args) {
ExecutorService executorService = Executors.newFixedThreadPool(NB_THREADS);
for (int i = 0; i < NB_THREADS; i++) {
final int nb = i + 1;
Runnable task = new Runnable() {
public void run() {
System.out.println("Task " + nb);
try {
TimeUnit.SECONDS.sleep(10);
System.out.println("Task " + nb + " terminated");
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
System.out.println("Error during thread await " + e); // Logging framework should be here
}
}
};
executorService.submit(task);
}
executorService.shutdown();
try {
executorService.awaitTermination(1, TimeUnit.SECONDS);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
System.out.println("Error during thread await " + e);
}
}
它将并行运行 te 3 个任务,输出如下所示:
Task 1
Task 3
Task 2
Task1 terminated
Task2 terminated
Task3 terminated
在您的情况下,您可以执行以下操作:
ExecutorService executorService = Executors.newFixedThreadPool(NB_THREADS);
while (currentPosition < count) {
ExtractItemsProcessor extractItemsProcessor =
getExtractItemsProcessor(currentPosition, currentPositionLogger);
executorService.submit(extractItemsProcessor); // In processor you should add the sleep method
waitBetweenProzesses += sleepTime;
currentPosition += chunkSize;
}