Example usage for java.util.concurrent ThreadPoolExecutor setCorePoolSize

Introduction

In this page you can find the example usage for java.util.concurrent ThreadPoolExecutor setCorePoolSize.

Prototype

public void setCorePoolSize(int corePoolSize) 

Source Link

Document

Sets the core number of threads.

Usage

From source file:com.alibaba.otter.node.etl.common.pipe.impl.http.archive.ArchiveBean.java

public void adjustPoolSize(int newPoolSize) {
    if (newPoolSize != poolSize) {
        poolSize = newPoolSize;/*from  w w  w .  j a v a 2  s. c  o  m*/
        if (executor instanceof ThreadPoolExecutor) {
            ThreadPoolExecutor pool = (ThreadPoolExecutor) executor;
            pool.setCorePoolSize(newPoolSize);
            pool.setMaximumPoolSize(newPoolSize);
        }
    }
}

---

From source file:com.alibaba.otter.node.etl.load.loader.db.FileLoadAction.java

private void adjustPoolSize(FileLoadContext context) {
    Pipeline pipeline = context.getPipeline();
    int newPoolSize = pipeline.getParameters().getFileLoadPoolSize();
    if (newPoolSize != poolSize) {
        poolSize = newPoolSize;/*from  www. j  a v  a  2  s .  com*/
        if (executor instanceof ThreadPoolExecutor) {
            ThreadPoolExecutor pool = (ThreadPoolExecutor) executor;
            pool.setCorePoolSize(newPoolSize);
            pool.setMaximumPoolSize(newPoolSize);
        }
    }

}

---

From source file:com.alibaba.otter.node.etl.OtterController.java

public void setThreadPoolSize(int size) {
    if (executorService instanceof ThreadPoolExecutor) {
        ThreadPoolExecutor pool = (ThreadPoolExecutor) executorService;
        pool.setCorePoolSize(size);
        pool.setMaximumPoolSize(size);//w  w w  .  j a  va2 s .  com
    }
}

---

From source file:com.espertech.esper.example.stockticker.TestStockTickerMultithreaded.java

public void performTest(int numberOfThreads, int numberOfTicksToSend, int ratioPriceOutOfLimit,
        int numberOfSecondsWaitForCompletion) {
    final int totalNumTicks = numberOfTicksToSend + 2 * TestStockTickerGenerator.NUM_STOCK_NAMES;

    log.info(".performTest Generating data, numberOfTicksToSend=" + numberOfTicksToSend
            + "  ratioPriceOutOfLimit=" + ratioPriceOutOfLimit);

    StockTickerEventGenerator generator = new StockTickerEventGenerator();
    LinkedList stream = generator.makeEventStream(numberOfTicksToSend, ratioPriceOutOfLimit,
            TestStockTickerGenerator.NUM_STOCK_NAMES,
            StockTickerRegressionConstants.PRICE_LIMIT_PCT_LOWER_LIMIT,
            StockTickerRegressionConstants.PRICE_LIMIT_PCT_UPPER_LIMIT,
            StockTickerRegressionConstants.PRICE_LOWER_LIMIT, StockTickerRegressionConstants.PRICE_UPPER_LIMIT,
            true);/*from w  w  w .ja v a  2s. c  o  m*/

    log.info(".performTest Send limit and initial tick events - singlethreaded");
    for (int i = 0; i < TestStockTickerGenerator.NUM_STOCK_NAMES * 2; i++) {
        Object theEvent = stream.removeFirst();
        epService.getEPRuntime().sendEvent(theEvent);
    }

    log.info(".performTest Loading thread pool work queue, numberOfRunnables=" + stream.size());

    ThreadPoolExecutor pool = new ThreadPoolExecutor(0, numberOfThreads, 99999, TimeUnit.SECONDS,
            new LinkedBlockingQueue<Runnable>());
    for (Object theEvent : stream) {
        SendEventRunnable runnable = new SendEventRunnable(epService, theEvent);
        pool.execute(runnable);
    }

    log.info(".performTest Starting thread pool, threads=" + numberOfThreads);
    pool.setCorePoolSize(numberOfThreads);

    log.info(".performTest Listening for completion");
    EPRuntimeUtil.awaitCompletion(epService.getEPRuntime(), totalNumTicks, numberOfSecondsWaitForCompletion, 1,
            10);

    pool.shutdown();

    // Check results : make sure the given ratio of out-of-limit stock prices was reported
    int expectedNumEmitted = (numberOfTicksToSend / ratioPriceOutOfLimit) + 1;
    assertTrue(listener.getSize() == expectedNumEmitted);

    log.info(".performTest Done test");
}

---

From source file:com.redhat.example.rules.runtimestats.DefaultRuleSimulator.java

public void setJittingThreads(int jittingThreads) {
    this.jittingThreads = jittingThreads;
    int n = jittingThreads > 0 ? jittingThreads : Runtime.getRuntime().availableProcessors();
    ThreadPoolExecutor ex = (ThreadPoolExecutor) ExecutorProviderFactory.getExecutorProvider().getExecutor();
    if (n != ex.getCorePoolSize()) {
        ex.setCorePoolSize(n);
        ex.setMaximumPoolSize(n);//from  w w  w  .j a  v a  2 s. c o m
    }
}

---

From source file:com.espertech.esper.filter.TestIndexTreeBuilderMultithreaded.java

private void performMultithreadedTest(FilterHandleSetNode topNode, int numberOfThreads, int numberOfRunnables,
        int numberOfSecondsSleep) throws Exception {
    log.info(".performMultithreadedTest Loading thread pool work queue,numberOfRunnables=" + numberOfRunnables);

    ThreadPoolExecutor pool = new ThreadPoolExecutor(0, numberOfThreads, 99999, TimeUnit.SECONDS,
            new LinkedBlockingQueue<Runnable>());

    for (int i = 0; i < numberOfRunnables; i++) {
        IndexTreeBuilderRunnable runnable = new IndexTreeBuilderRunnable(eventType, topNode, testFilterSpecs,
                matchedEvents, unmatchedEvents);

        pool.execute(runnable);/*from   w  w w .  jav a2s  .  c om*/
    }

    log.info(".performMultithreadedTest Starting thread pool, threads=" + numberOfThreads);
    pool.setCorePoolSize(numberOfThreads);

    // Sleep X seconds
    sleep(numberOfSecondsSleep);

    log.info(".performMultithreadedTest Completed, numberOfRunnables=" + numberOfRunnables
            + "  numberOfThreads=" + numberOfThreads + "  completed=" + pool.getCompletedTaskCount());

    pool.shutdown();
    pool.awaitTermination(1, TimeUnit.SECONDS);

    assertTrue(pool.getCompletedTaskCount() == numberOfRunnables);
}

---

From source file:com.alibaba.otter.node.etl.extract.extractor.DatabaseExtractor.java

private void adjustPoolSize(int newPoolSize) {
    if (newPoolSize != poolSize) {
        poolSize = newPoolSize;/*w  ww. jav  a  2  s. co m*/
        if (executor instanceof ThreadPoolExecutor) {
            ThreadPoolExecutor pool = (ThreadPoolExecutor) executor;
            pool.setCorePoolSize(newPoolSize);
            pool.setMaximumPoolSize(newPoolSize);
        }
    }
}

---

From source file:com.alibaba.otter.node.etl.load.loader.db.DbLoadAction.java

private void adjustPoolSize(DbLoadContext context) {
    Pipeline pipeline = context.getPipeline();
    int newPoolSize = pipeline.getParameters().getLoadPoolSize();
    if (newPoolSize != poolSize) {
        poolSize = newPoolSize;//w  w  w.  ja v  a  2 s .  c  om
        if (executor instanceof ThreadPoolExecutor) {
            ThreadPoolExecutor pool = (ThreadPoolExecutor) executor;
            pool.setCorePoolSize(newPoolSize);
            pool.setMaximumPoolSize(newPoolSize);
        }
    }
}

---

From source file:org.apache.hadoop.hbase.ipc.TestFifoRpcScheduler.java

private ThreadPoolExecutor disableHandlers(RpcScheduler scheduler) {
    ThreadPoolExecutor rpcExecutor = null;

    try {// ww  w.  j a va 2 s.  c  o m
        Field ExecutorField = scheduler.getClass().getDeclaredField("executor");
        ExecutorField.setAccessible(true);

        scheduler.start();
        rpcExecutor = (ThreadPoolExecutor) ExecutorField.get(scheduler);

        rpcExecutor.setMaximumPoolSize(1);
        rpcExecutor.allowCoreThreadTimeOut(true);
        rpcExecutor.setCorePoolSize(0);
        rpcExecutor.setKeepAliveTime(1, TimeUnit.MICROSECONDS);

        // Wait for 2 seconds, so that idle threads will die
        Thread.sleep(2000);

    } catch (NoSuchFieldException e) {
        LOG.error("No such field exception:" + e);
    } catch (IllegalAccessException e) {
        LOG.error("Illegal access exception:" + e);
    } catch (InterruptedException e) {
        LOG.error("Interrupted exception:" + e);
    }

    return rpcExecutor;
}

---