Examples of java.util.concurrent.ThreadPoolExecutor.allowCoreThreadTimeOut()

Class java.util.concurrent.ThreadPoolExecutor

Examples of java.util.concurrent.ThreadPoolExecutor.allowCoreThreadTimeOut()

java.util.concurrent.ThreadPoolExecutor.allowCoreThreadTimeOut()
Sets the policy governing whether core threads may time out and terminate if no tasks arrive within the keep-alive time, being replaced if needed when new tasks arrive. When false, core threads are never terminated due to lack of incoming tasks. When true, the same keep-alive policy applying to non-core threads applies also to core threads. To avoid continual thread replacement, the keep-alive time must be greater than zero when setting {@code true}. This method should in general be called before the pool is actively used. @param value {@code true} if should time out, else {@code false} @throws IllegalArgumentException if value is {@code true}and the current keep-alive time is not greater than zero @since 1.6

            private String createName() {
                return "oak-executor-" + counter.getAndIncrement();
            }
        });
        executor.setKeepAliveTime(1, TimeUnit.MINUTES);
        executor.allowCoreThreadTimeOut(true);
        return executor;
    }


    private MBeanServer mbeanServer;

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                return new JobFutureTask<T>(runnable, value);
            }
            
        };
        
        exec.allowCoreThreadTimeOut(true); // ... and allow core threads to time out.  This just keeps things clean when idle, and is nice for ftests modes, etc., where we'd especially like these not to linger.
        return exec;
    }


    /**
     * Subclasses FutureTask for the sole purpose of providing {@link #getCallable()}, which is used to extract the producer in the {@link JobBasedRoundRobinQueue}

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  private static synchronized ExecutorService getThreadPool(Master master) {
    if (threadPool == null) {
      int threadPoolSize = master.getSystemConfiguration().getCount(Property.MASTER_BULK_THREADPOOL_SIZE);
      ThreadPoolExecutor pool = new SimpleThreadPool(threadPoolSize, "bulk import");
      pool.allowCoreThreadTimeOut(true);
      threadPool = new TraceExecutorService(pool);
    }
    return threadPool;
  }

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        final RejectedExecutionHandler executionHandler = new TaskOverflowHandler();
        LOG.info("Starting Pool: Threads: " + POOL_SIZE);
        // Create the ThreadPoolExecutor
        final ThreadPoolExecutor executor =
                new ThreadPoolExecutor(POOL_SIZE, POOL_SIZE, 3, TimeUnit.SECONDS, worksQueue, executionHandler);
        executor.allowCoreThreadTimeOut(true);


        final Object callback = new Object();


        // Starting the monitor thread as a daemon
        final Thread monitor = new Thread(new TasksMonitorThread(executor, callback), "TasksMonitorThread");

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  }


  private void initializeThreadPool() {
    ThreadPoolExecutor threadPool = new ThreadPoolExecutor(numThreads, numThreads, 0, TimeUnit.SECONDS,
                                                           new ArrayBlockingQueue<Runnable>(numThreads * 10));
    threadPool.allowCoreThreadTimeOut(false);
    updaters = new Updater[numThreads];
    for (int i = 0; i < numThreads; i++) {
      updaters[i] = new Updater();
      threadPool.submit(updaters[i]);
    }

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          CORE_THREADS_PER_VOLUME, MAXIMUM_THREADS_PER_VOLUME, 
          THREADS_KEEP_ALIVE_SECONDS, TimeUnit.SECONDS, 
          new LinkedBlockingQueue<Runnable>(), threadFactory);


      // This can reduce the number of running threads
      executor.allowCoreThreadTimeOut(true);
      executors.put(vol, executor);
    }
    
  }

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          CORE_THREADS_PER_VOLUME, MAXIMUM_THREADS_PER_VOLUME, 
          THREADS_KEEP_ALIVE_SECONDS, TimeUnit.SECONDS, 
          new LinkedBlockingQueue<Runnable>(), threadFactory);


      // This can reduce the number of running threads
      executor.allowCoreThreadTimeOut(true);
      executors.put(volumes[v], executor);
    }
    
  }

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            final ThreadPoolExecutor threadPoolExecutor = rejectionHandler == null ?
                    new ThreadPoolExecutor(coreSize, maxSize, keepAliveSeconds, TimeUnit.SECONDS, workQueue, threadFactory) :
                    new ThreadPoolExecutor(coreSize, maxSize, keepAliveSeconds, TimeUnit.SECONDS, workQueue, threadFactory, rejectionHandler);


            if (allowCoreThreadTimeout) {
                threadPoolExecutor.allowCoreThreadTimeOut(true);
            }
            if (prestartAllCoreThreads) {
                threadPoolExecutor.prestartAllCoreThreads();
            }
            executorService = threadPoolExecutor;

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                : new SynchronousQueue(true);


        result = new EjbThreadPoolExecutor(corePoolSize, maxPoolSize, keepAliveSeconds, workQueue, poolName);


        if(allowCoreThreadTimeout) {
            result.allowCoreThreadTimeOut(true);
        }
        if (preStartAllCoreThreads) {
            result.prestartAllCoreThreads();
        }

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                ThreadPoolExecutor pool =
                    new ThreadPoolExecutor(CORE_POOL_SIZE, MAX_POOL_SIZE, POOL_TIMEOUT_SECS, TimeUnit.SECONDS,
                                           new ArrayBlockingQueue<Runnable>(POOL_QUEUE_SIZE),
                                           new PoolNameFactory("Trireme Async Pool"),
                                           new ThreadPoolExecutor.AbortPolicy());
                pool.allowCoreThreadTimeOut(true);
                asyncPool = pool;
            }


            // This pool is used to run scripts. As a cached thread pool it will grow as necessary and shrink
            // down to zero when idle. This is a separate thread pool because these threads persist for the life

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