Java ScheduledThreadPoolExecutor.setExecuteExistingDelayedTasksAfterShutdownPolicy方法代碼示例

import java.util.concurrent.ScheduledThreadPoolExecutor; //導入方法依賴的package包/類
/**
 * Have shutdown actually means shutdown. Tasks that need to complete should use
 * futures.
 */
public static ScheduledThreadPoolExecutor getScheduledThreadPoolExecutor(String name, UncaughtExceptionHandler handler, int poolSize, int stackSize) {
    // HACK: ScheduledThreadPoolExecutor won't let use the handler so
    // if we're using ExceptionHandlingRunnable then we'll be able to 
    // pick up the exceptions
    Thread.setDefaultUncaughtExceptionHandler(handler);
    
    ThreadFactory factory = getThreadFactory(name, handler);
    ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(poolSize, factory);
    executor.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
    executor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
    return executor;
}
 

import java.util.concurrent.ScheduledThreadPoolExecutor; //導入方法依賴的package包/類
private static ListeningScheduledExecutorService newScheduler() {
    final ScheduledThreadPoolExecutor scheduler = new ScheduledThreadPoolExecutor(1);
    scheduler.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
    scheduler.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
    scheduler.setRemoveOnCancelPolicy(true);
    return MoreExecutors.listeningDecorator(scheduler);
}
 

import java.util.concurrent.ScheduledThreadPoolExecutor; //導入方法依賴的package包/類
private static ScheduledThreadPoolExecutor createThreadPoolFromCacheConfig(
        final CacheConfig cacheConfig) {
    final ScheduledThreadPoolExecutor scheduledThreadPoolExecutor = new ScheduledThreadPoolExecutor(
            cacheConfig.getAsynchronousWorkersMax());
    scheduledThreadPoolExecutor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
    return scheduledThreadPoolExecutor;
}
 

import java.util.concurrent.ScheduledThreadPoolExecutor; //導入方法依賴的package包/類
public GenericConnectionManager(
        TransactionManager transactionManager,
        TransactionSupportLevel transactionSupportLevel,
        SubjectSource subjectSource,
        ClassLoader classLoader,
        ManagedConnectionFactory managedConnectionFactory,
        String name,
        String poolName,
        int minIdle,
        int maxPoolSize,
        long connectionTimeout,
        long idleTimeout,
        long maxLifetime,
        long aliveBypassWindow,
        long houseKeepingPeriod) {

    this.transactionManager = transactionManager;
    this.transactionSupportLevel = transactionSupportLevel;
    this.subjectSource = subjectSource;
    this.classLoader = classLoader;
    this.managedConnectionFactory = managedConnectionFactory;
    this.name = name;
    this.poolName = poolName;
    this.minIdle = minIdle;
    this.maxPoolSize = maxPoolSize;
    this.connectionTimeout = connectionTimeout;
    this.idleTimeout = idleTimeout;
    this.maxLifetime = maxLifetime;
    this.aliveBypassWindow = aliveBypassWindow;
    this.houseKeepingPeriod = houseKeepingPeriod;

    final ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(1, new UtilityElf.DefaultThreadFactory(poolName + " housekeeper", true), new ThreadPoolExecutor.DiscardPolicy());
    executor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
    executor.setRemoveOnCancelPolicy(true);
    this.houseKeepingExecutorService = executor;

    this.addConnectionExecutor = createThreadPoolExecutor(this.maxPoolSize, poolName + " connection adder", null, new ThreadPoolExecutor.DiscardPolicy());
    this.closeConnectionExecutor = createThreadPoolExecutor(this.maxPoolSize, poolName + " connection closer", null, new ThreadPoolExecutor.CallerRunsPolicy());

    this.houseKeeperTask = this.houseKeepingExecutorService.scheduleWithFixedDelay(this::houseKeep, 100L, this.houseKeepingPeriod, MILLISECONDS);

    if (transactionManager != null && name != null) {
        transactionManager.registerResource(new RecoverableResourceFactoryImpl(managedConnectionFactory, name));
    }
}
 

import java.util.concurrent.ScheduledThreadPoolExecutor; //導入方法依賴的package包/類
/**
 * Constructor
 */
public App() {
    super(APP_MAJOR_VERSION, APP_MINOR_VERSION);
    _doDataMaintenanceExecutor = new ScheduledThreadPoolExecutor(1, new DoDataMaintenanceExecutorThreadFactory());
    _doDataMaintenanceExecutor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
}