| /************************************************************** |
| * |
| * 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 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 |
| } |