com.liferay.portal.cache.ehcache.CacheManagerUtil Maven / Gradle / Ivy
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Contains implementation for the portal services.
/**
* Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.portal.cache.ehcache;
import com.liferay.portal.kernel.util.JavaDetector;
import com.liferay.portal.kernel.util.ReflectionUtil;
import com.liferay.portal.util.PropsValues;
import java.lang.reflect.Field;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.DelayQueue;
import java.util.concurrent.RunnableScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.config.Configuration;
/**
* @author Shuyang Zhou
*/
public class CacheManagerUtil {
public static CacheManager createCacheManager(Configuration configuration) {
CacheManager cacheManager = new CacheManager(configuration);
try {
ScheduledThreadPoolExecutor scheduledThreadPoolExecutor =
(ScheduledThreadPoolExecutor)_statisticsExecutorField.get(
cacheManager);
BlockingQueue blockingQueue = null;
// This odd logic is a workaround for
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6522773
if (JavaDetector.isJDK6()) {
blockingQueue = (BlockingQueue)_workQueueField.get(
scheduledThreadPoolExecutor);;
_workQueueField.set(
scheduledThreadPoolExecutor,
new DelayQueue>() {
@Override
public int remainingCapacity() {
return 0;
}
});
}
scheduledThreadPoolExecutor.setCorePoolSize(
PropsValues.EHCACHE_CACHE_MANAGER_STATISTICS_THREAD_POOL_SIZE);
if (JavaDetector.isJDK6()) {
while (
scheduledThreadPoolExecutor.getPoolSize() >
PropsValues.
EHCACHE_CACHE_MANAGER_STATISTICS_THREAD_POOL_SIZE);
_workQueueField.set(scheduledThreadPoolExecutor, blockingQueue);
}
}
catch (Exception e) {
throw new RuntimeException(e);
}
return cacheManager;
}
private static Field _statisticsExecutorField;
private static Field _workQueueField;
static {
try {
_statisticsExecutorField = ReflectionUtil.getDeclaredField(
CacheManager.class, "statisticsExecutor");
if (JavaDetector.isJDK6()) {
_workQueueField = ReflectionUtil.getDeclaredField(
ThreadPoolExecutor.class, "workQueue");
}
}
catch (Exception e) {
throw new ExceptionInInitializerError(e);
}
}
}