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Diffstat (limited to 'jurt/com/sun/star/lib/uno/environments/remote/ThreadPoolManager.java')
-rw-r--r-- | jurt/com/sun/star/lib/uno/environments/remote/ThreadPoolManager.java | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/jurt/com/sun/star/lib/uno/environments/remote/ThreadPoolManager.java b/jurt/com/sun/star/lib/uno/environments/remote/ThreadPoolManager.java new file mode 100644 index 000000000000..03789f42ee5a --- /dev/null +++ b/jurt/com/sun/star/lib/uno/environments/remote/ThreadPoolManager.java @@ -0,0 +1,83 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: ThreadPoolManager.java,v $ + * $Revision: 1.4 $ + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package com.sun.star.lib.uno.environments.remote; + +/** + * Manages the UNO thread pool factory. + * + * <P>The thread pool factory is a process-wide resource. It is important that + * all UNO environments within a process share the same thread pool mechanisms: + * if a synchronous UNO call is bridged out from one local UNO environment over + * one remote bridge, and recursively calls back into another local UNO + * environment over another remote bridge, the code in the second environment + * should be executed in the thread that did the original call from the first + * environment.</P> + * + * <P>There are both a Java and a native thread pool factory. A pure Java + * process will always use the Java thread pool factory. A mixed process uses + * the system property <CODE>org.openoffice.native</CODE> (to be set by the + * native code that starts the JVM) to determine which implementation + * to use.</P> + */ +public final class ThreadPoolManager { + /** + * Creates a thread pool instance. + * + * @return a new thread pool instance; will never be <CODE>null</CODE> + */ + public static synchronized IThreadPool create() { + if (useNative) { + return new NativeThreadPool(); + } else { + if (javaFactory == null) { + javaFactory = new JavaThreadPoolFactory(); + } + return javaFactory.createThreadPool(); + } + } + + /** + * Leads to using the native thread pool factory, unless a Java thread pool + * has already been created. + * + * @return <CODE>false</CODE> if a Java thread pool has already been created + */ + public static synchronized boolean useNative() { + useNative = javaFactory == null; + return useNative; + } + + private static boolean useNative + = System.getProperty("org.openoffice.native") != null; + private static JavaThreadPoolFactory javaFactory = null; + + private ThreadPoolManager() {} // do not instantiate +} |