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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tomee.catalina;
import org.apache.openejb.config.TldScanner;
import java.util.concurrent.Semaphore;
/**
* The classes listed and loaded eagerly have static initializers which take a tiny bit of time.
* These initializers cannot be actually run in parallel because classes are loaded serially,
* but executing them back to back does help speed things up a bit.
*
* @version $Rev$ $Date$
*/
public class Warmup {
/**
* Referencing this method is enough to cause the static initializer
* to be called. Referencing this method in several classes is therefore safe.
*
* This method itself does nothing.
*/
public static void warmup() {}
static {
final String[] classes = {
"java.util.concurrent.TimeUnit",
"java.util.concurrent.atomic.AtomicLong",
"javax.el.ExpressionFactory",
"javax.faces.component.UIViewRoot",
"javax.imageio.ImageIO",
"javax.naming.spi.NamingManager",
"javax.servlet.ServletOutputStream",
"org.apache.bval.jsr303.ApacheValidatorFactory",
"org.apache.bval.jsr303.ConstraintAnnotationAttributes",
"org.apache.bval.jsr303.ConstraintDefaults",
"org.apache.bval.jsr303.groups.GroupsComputer",
"org.apache.bval.jsr303.xml.ValidationMappingParser",
"org.apache.bval.util.PrivilegedActions",
"org.apache.catalina.authenticator.AuthenticatorBase",
"org.apache.catalina.connector.Connector",
"org.apache.catalina.connector.CoyoteAdapter",
"org.apache.catalina.connector.Request",
"org.apache.catalina.connector.Response",
"org.apache.catalina.core.ApplicationFilterChain",
"org.apache.catalina.core.StandardContext",
"org.apache.catalina.core.StandardServer",
"org.apache.catalina.deploy.NamingResources",
"org.apache.catalina.loader.WebappLoader",
"org.apache.catalina.mbeans.GlobalResourcesLifecycleListener",
"org.apache.catalina.mbeans.MBeanUtils",
"org.apache.catalina.realm.RealmBase",
"org.apache.catalina.security.SecurityUtil",
"org.apache.catalina.servlets.DefaultServlet",
"org.apache.catalina.session.ManagerBase",
"org.apache.catalina.startup.Bootstrap",
"org.apache.catalina.startup.Catalina",
"org.apache.catalina.startup.CatalinaProperties",
"org.apache.catalina.startup.ContextConfig",
"org.apache.catalina.users.MemoryUserDatabase",
"org.apache.catalina.util.ExtensionValidator",
"org.apache.catalina.util.LifecycleBase",
"org.apache.catalina.util.ServerInfo",
"org.apache.catalina.valves.AccessLogValve",
"org.apache.catalina.valves.ValveBase",
"org.apache.coyote.AbstractProtocol",
"org.apache.coyote.ajp.AbstractAjpProtocol",
"org.apache.coyote.http11.AbstractHttp11Protocol",
"org.apache.geronimo.transaction.manager.TransactionManagerImpl",
"org.apache.jasper.compiler.JspRuntimeContext",
"org.apache.juli.logging.DirectJDKLog",
"org.apache.myfaces.context.servlet.ServletExternalContextImplBase",
"org.apache.myfaces.shared.config.MyfacesConfig",
"org.apache.myfaces.spi.WebConfigProviderFactory",
"org.apache.naming.ContextBindings",
"org.apache.naming.resources.BaseDirContext",
"org.apache.openejb.ClassLoaderUtil",
"org.apache.openejb.InterfaceType",
"org.apache.openejb.assembler.classic.Assembler",
"org.apache.openejb.assembler.classic.AssemblerTool",
"org.apache.openejb.cdi.CdiBuilder",
"org.apache.openejb.cdi.ThreadSingletonServiceImpl",
"org.apache.openejb.config.AnnotationDeployer",
"org.apache.openejb.config.AnnotationDeployer$4",
"org.apache.openejb.config.AppValidator",
"org.apache.openejb.config.AutoConfig",
"org.apache.openejb.config.ConfigurationFactory",
"org.apache.openejb.config.MBeanDeployer",
"org.apache.openejb.config.NewLoaderLogic",
"org.apache.openejb.config.PersistenceContextAnnFactory",
"org.apache.openejb.config.sys.JaxbJavaee",
"org.apache.openejb.core.ServerFederation",
"org.apache.openejb.core.ivm.EjbHomeProxyHandler$1",
"org.apache.openejb.core.ivm.EjbHomeProxyHandler$MethodType",
"org.apache.openejb.core.managed.ManagedContainer$MethodType",
"org.apache.openejb.loader.FileUtils",
"org.apache.openejb.loader.IO",
"org.apache.openejb.loader.SystemInstance",
"org.apache.openejb.monitoring.StatsInterceptor",
"org.apache.openejb.persistence.JtaEntityManagerRegistry",
"org.apache.openejb.server.ServiceLogger",
"org.apache.openejb.server.ejbd.EjbDaemon",
"org.apache.openejb.server.ejbd.EjbRequestHandler",
"org.apache.openejb.util.Duration",
"org.apache.openejb.util.Join",
"org.apache.openejb.util.LogCategory",
"org.apache.openejb.util.Messages",
"org.apache.openejb.util.SafeToolkit",
"org.apache.openejb.util.StringTemplate",
"org.apache.openejb.util.proxy.ProxyManager",
"org.apache.openjpa.enhance.PCRegistry",
"org.apache.openjpa.lib.util.Localizer",
"org.apache.openjpa.lib.util.concurrent.ConcurrentReferenceHashMap",
"org.apache.tomcat.util.buf.B2CConverter",
"org.apache.tomcat.util.buf.ByteChunk",
"org.apache.tomcat.util.digester.Digester",
"org.apache.tomcat.util.file.Matcher",
"org.apache.tomcat.util.http.Cookies",
"org.apache.tomcat.util.http.HttpMessages",
"org.apache.tomcat.util.http.mapper.Mapper",
"org.apache.tomcat.util.net.AbstractEndpoint",
"org.apache.tomcat.util.scan.StandardJarScanner",
"org.apache.tomcat.util.threads.ThreadPoolExecutor",
"org.apache.tomee.catalina.BackportUtil",
"org.apache.tomee.catalina.BackportUtil$1",
"org.apache.tomee.loader.TomEEJarScanner",
// "org.apache.tomee.catalina.TomcatLoader", // can't be loaded from here
"org.apache.webbeans.config.WebBeansFinder",
"org.apache.webbeans.container.InjectionResolver",
"org.apache.webbeans.util.WebBeansUtil",
"org.apache.webbeans.web.context.WebContextsService",
"org.apache.xbean.naming.reference.SimpleReference",
"org.apache.xbean.propertyeditor.PropertyEditors",
"org.apache.xbean.propertyeditor.ReferenceIdentityMap",
"org.apache.xbean.recipe.ReflectionUtil",
"org.slf4j.LoggerFactory",
"org.slf4j.impl.StaticLoggerBinder",
};
final ClassLoader loader = Warmup.class.getClassLoader();
// final JaxbJavaeeLoad jaxbJavaeeLoad = new JaxbJavaeeLoad(WebApp.class);
// final Thread jaxb = new Thread(jaxbJavaeeLoad);
// jaxb.setDaemon(true);
// jaxb.start();
try { // see org.apache.openejb.Core
Class.forName("org.apache.openejb.util.Logger", true, loader);
} catch (final Throwable e) {
// no-op
}
final int permits = 2 * Runtime.getRuntime().availableProcessors() + 1;
final Semaphore semaphore = new Semaphore(0);
final Thread tld = new Thread() {
@Override
public void run() {
try {
TldScanner.scan(loader);
} catch (final Throwable throwable) {
// no-op
}
}
};
tld.setDaemon(true);
tld.start();
final int part = Math.max(1, (int) Math.round(classes.length * 1. / permits));
for (int i = 0; i < permits; i++) {
final int offset = i * part;
final Thread thread = new Thread() {
@Override
public void run() {
int max = offset + part;
if (offset / part == permits - 1) { // last one
max = classes.length;
}
for (int c = offset; c < max; c++) {
try {
Class.forName(classes[c], true, loader);
} catch (final Throwable e) {
// no-op
}
}
semaphore.release();
}
};
thread.setName("warmup - " + (i + 1));
thread.setDaemon(true);
thread.start();
}
try {
semaphore.acquire(permits);
tld.join();
// jaxb.join();
} catch (final InterruptedException e) {
Thread.interrupted();
}
}
// private static class JaxbJavaeeLoad implements Runnable {
//
// private final Class type;
//
// private JaxbJavaeeLoad(Class type) {
// this.type = type;
// }
//
// @Override
// public void run() {
// try {
// JaxbJavaee.getContext(type);
// } catch (JAXBException e) {
// }
// }
// }
}
