| /* |
| * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.corba.se.impl.orbutil.threadpool; |
| |
| import java.io.IOException; |
| |
| import java.security.PrivilegedAction; |
| import java.security.AccessController; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import com.sun.corba.se.spi.orb.ORB; |
| |
| import com.sun.corba.se.spi.orbutil.threadpool.NoSuchThreadPoolException; |
| import com.sun.corba.se.spi.orbutil.threadpool.ThreadPool; |
| import com.sun.corba.se.spi.orbutil.threadpool.ThreadPoolManager; |
| import com.sun.corba.se.spi.orbutil.threadpool.ThreadPoolChooser; |
| |
| import com.sun.corba.se.impl.orbutil.threadpool.ThreadPoolImpl; |
| import com.sun.corba.se.impl.orbutil.ORBConstants; |
| |
| import com.sun.corba.se.impl.logging.ORBUtilSystemException; |
| import com.sun.corba.se.impl.orbutil.ORBConstants; |
| import com.sun.corba.se.spi.logging.CORBALogDomains; |
| |
| |
| public class ThreadPoolManagerImpl implements ThreadPoolManager |
| { |
| private ThreadPool threadPool; |
| private ThreadGroup threadGroup; |
| |
| private static final ORBUtilSystemException wrapper = |
| ORBUtilSystemException.get(CORBALogDomains.RPC_TRANSPORT); |
| |
| public ThreadPoolManagerImpl() { |
| threadGroup = getThreadGroup(); |
| threadPool = new ThreadPoolImpl(threadGroup, |
| ORBConstants.THREADPOOL_DEFAULT_NAME); |
| } |
| |
| private static AtomicInteger tgCount = new AtomicInteger(); |
| |
| |
| private ThreadGroup getThreadGroup() { |
| ThreadGroup tg; |
| |
| // See bugs 4916766 and 4936203 |
| // We intend to create new threads in a reliable thread group. |
| // This avoids problems if the application/applet |
| // creates a thread group, makes JavaIDL calls which create a new |
| // connection and ReaderThread, and then destroys the thread |
| // group. If our ReaderThreads were to be part of such destroyed thread |
| // group then it might get killed and cause other invoking threads |
| // sharing the same connection to get a non-restartable |
| // CommunicationFailure. We'd like to avoid that. |
| // |
| // Our solution is to create all of our threads in the highest thread |
| // group that we have access to, given our own security clearance. |
| // |
| try { |
| // try to get a thread group that's as high in the threadgroup |
| // parent-child hierarchy, as we can get to. |
| // this will prevent an ORB thread created during applet-init from |
| // being killed when an applet dies. |
| tg = AccessController.doPrivileged( |
| new PrivilegedAction<ThreadGroup>() { |
| public ThreadGroup run() { |
| ThreadGroup tg = Thread.currentThread().getThreadGroup(); |
| ThreadGroup ptg = tg; |
| try { |
| while (ptg != null) { |
| tg = ptg; |
| ptg = tg.getParent(); |
| } |
| } catch (SecurityException se) { |
| // Discontinue going higher on a security exception. |
| } |
| return new ThreadGroup(tg, "ORB ThreadGroup " + tgCount.getAndIncrement()); |
| } |
| } |
| ); |
| } catch (SecurityException e) { |
| // something wrong, we go back to the original code |
| tg = Thread.currentThread().getThreadGroup(); |
| } |
| |
| return tg; |
| } |
| |
| public void close() { |
| try { |
| threadPool.close(); |
| } catch (IOException exc) { |
| wrapper.threadPoolCloseError(); |
| } |
| |
| try { |
| boolean isDestroyed = threadGroup.isDestroyed(); |
| int numThreads = threadGroup.activeCount(); |
| int numGroups = threadGroup.activeGroupCount(); |
| |
| if (isDestroyed) { |
| wrapper.threadGroupIsDestroyed(threadGroup); |
| } else { |
| if (numThreads > 0) |
| wrapper.threadGroupHasActiveThreadsInClose(threadGroup, numThreads); |
| |
| if (numGroups > 0) |
| wrapper.threadGroupHasSubGroupsInClose(threadGroup, numGroups); |
| |
| threadGroup.destroy(); |
| } |
| } catch (IllegalThreadStateException exc) { |
| wrapper.threadGroupDestroyFailed(exc, threadGroup); |
| } |
| |
| threadGroup = null; |
| } |
| |
| /** |
| * This method will return an instance of the threadpool given a threadpoolId, |
| * that can be used by any component in the app. server. |
| * |
| * @throws NoSuchThreadPoolException thrown when invalid threadpoolId is passed |
| * as a parameter |
| */ |
| public ThreadPool getThreadPool(String threadpoolId) |
| throws NoSuchThreadPoolException { |
| |
| return threadPool; |
| } |
| |
| /** |
| * This method will return an instance of the threadpool given a numeric threadpoolId. |
| * This method will be used by the ORB to support the functionality of |
| * dedicated threadpool for EJB beans |
| * |
| * @throws NoSuchThreadPoolException thrown when invalidnumericIdForThreadpool is passed |
| * as a parameter |
| */ |
| public ThreadPool getThreadPool(int numericIdForThreadpool) |
| throws NoSuchThreadPoolException { |
| |
| return threadPool; |
| } |
| |
| /** |
| * This method is used to return the numeric id of the threadpool, given a String |
| * threadpoolId. This is used by the POA interceptors to add the numeric threadpool |
| * Id, as a tagged component in the IOR. This is used to provide the functionality of |
| * dedicated threadpool for EJB beans |
| */ |
| public int getThreadPoolNumericId(String threadpoolId) { |
| return 0; |
| } |
| |
| /** |
| * Return a String Id for a numericId of a threadpool managed by the threadpool |
| * manager |
| */ |
| public String getThreadPoolStringId(int numericIdForThreadpool) { |
| return ""; |
| } |
| |
| /** |
| * Returns the first instance of ThreadPool in the ThreadPoolManager |
| */ |
| public ThreadPool getDefaultThreadPool() { |
| return threadPool; |
| } |
| |
| /** |
| * Return an instance of ThreadPoolChooser based on the componentId that was |
| * passed as argument |
| */ |
| public ThreadPoolChooser getThreadPoolChooser(String componentId) { |
| //FIXME: This method is not used, but should be fixed once |
| //nio select starts working and we start using ThreadPoolChooser |
| return null; |
| } |
| /** |
| * Return an instance of ThreadPoolChooser based on the componentIndex that was |
| * passed as argument. This is added for improved performance so that the caller |
| * does not have to pay the cost of computing hashcode for the componentId |
| */ |
| public ThreadPoolChooser getThreadPoolChooser(int componentIndex) { |
| //FIXME: This method is not used, but should be fixed once |
| //nio select starts working and we start using ThreadPoolChooser |
| return null; |
| } |
| |
| /** |
| * Sets a ThreadPoolChooser for a particular componentId in the ThreadPoolManager. This |
| * would enable any component to add a ThreadPoolChooser for their specific use |
| */ |
| public void setThreadPoolChooser(String componentId, ThreadPoolChooser aThreadPoolChooser) { |
| //FIXME: This method is not used, but should be fixed once |
| //nio select starts working and we start using ThreadPoolChooser |
| } |
| |
| /** |
| * Gets the numeric index associated with the componentId specified for a |
| * ThreadPoolChooser. This method would help the component call the more |
| * efficient implementation i.e. getThreadPoolChooser(int componentIndex) |
| */ |
| public int getThreadPoolChooserNumericId(String componentId) { |
| //FIXME: This method is not used, but should be fixed once |
| //nio select starts working and we start using ThreadPoolChooser |
| return 0; |
| } |
| |
| } |
| |
| // End of file. |