1*b1cdbd2cSJim Jagielski /************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski 23*b1cdbd2cSJim Jagielski 24*b1cdbd2cSJim Jagielski package com.sun.star.lib.uno.environments.remote; 25*b1cdbd2cSJim Jagielski 26*b1cdbd2cSJim Jagielski /** 27*b1cdbd2cSJim Jagielski * Manages the UNO thread pool factory. 28*b1cdbd2cSJim Jagielski * 29*b1cdbd2cSJim Jagielski * <P>The thread pool factory is a process-wide resource. It is important that 30*b1cdbd2cSJim Jagielski * all UNO environments within a process share the same thread pool mechanisms: 31*b1cdbd2cSJim Jagielski * if a synchronous UNO call is bridged out from one local UNO environment over 32*b1cdbd2cSJim Jagielski * one remote bridge, and recursively calls back into another local UNO 33*b1cdbd2cSJim Jagielski * environment over another remote bridge, the code in the second environment 34*b1cdbd2cSJim Jagielski * should be executed in the thread that did the original call from the first 35*b1cdbd2cSJim Jagielski * environment.</P> 36*b1cdbd2cSJim Jagielski * 37*b1cdbd2cSJim Jagielski * <P>There are both a Java and a native thread pool factory. A pure Java 38*b1cdbd2cSJim Jagielski * process will always use the Java thread pool factory. A mixed process uses 39*b1cdbd2cSJim Jagielski * the system property <CODE>org.openoffice.native</CODE> (to be set by the 40*b1cdbd2cSJim Jagielski * native code that starts the JVM) to determine which implementation 41*b1cdbd2cSJim Jagielski * to use.</P> 42*b1cdbd2cSJim Jagielski */ 43*b1cdbd2cSJim Jagielski public final class ThreadPoolManager { 44*b1cdbd2cSJim Jagielski /** 45*b1cdbd2cSJim Jagielski * Creates a thread pool instance. 46*b1cdbd2cSJim Jagielski * 47*b1cdbd2cSJim Jagielski * @return a new thread pool instance; will never be <CODE>null</CODE> 48*b1cdbd2cSJim Jagielski */ create()49*b1cdbd2cSJim Jagielski public static synchronized IThreadPool create() { 50*b1cdbd2cSJim Jagielski if (useNative) { 51*b1cdbd2cSJim Jagielski return new NativeThreadPool(); 52*b1cdbd2cSJim Jagielski } else { 53*b1cdbd2cSJim Jagielski if (javaFactory == null) { 54*b1cdbd2cSJim Jagielski javaFactory = new JavaThreadPoolFactory(); 55*b1cdbd2cSJim Jagielski } 56*b1cdbd2cSJim Jagielski return javaFactory.createThreadPool(); 57*b1cdbd2cSJim Jagielski } 58*b1cdbd2cSJim Jagielski } 59*b1cdbd2cSJim Jagielski 60*b1cdbd2cSJim Jagielski /** 61*b1cdbd2cSJim Jagielski * Leads to using the native thread pool factory, unless a Java thread pool 62*b1cdbd2cSJim Jagielski * has already been created. 63*b1cdbd2cSJim Jagielski * 64*b1cdbd2cSJim Jagielski * @return <CODE>false</CODE> if a Java thread pool has already been created 65*b1cdbd2cSJim Jagielski */ useNative()66*b1cdbd2cSJim Jagielski public static synchronized boolean useNative() { 67*b1cdbd2cSJim Jagielski useNative = javaFactory == null; 68*b1cdbd2cSJim Jagielski return useNative; 69*b1cdbd2cSJim Jagielski } 70*b1cdbd2cSJim Jagielski 71*b1cdbd2cSJim Jagielski private static boolean useNative 72*b1cdbd2cSJim Jagielski = System.getProperty("org.openoffice.native") != null; 73*b1cdbd2cSJim Jagielski private static JavaThreadPoolFactory javaFactory = null; 74*b1cdbd2cSJim Jagielski ThreadPoolManager()75*b1cdbd2cSJim Jagielski private ThreadPoolManager() {} // do not instantiate 76*b1cdbd2cSJim Jagielski } 77