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86 lines
3.3 KiB
Java
86 lines
3.3 KiB
Java
/*
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* Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.rmi.server;
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import java.rmi.activation.ActivationGroupDesc;
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import java.rmi.activation.ActivationGroupID;
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import java.rmi.activation.ActivationGroup;
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/**
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* This is the bootstrap code to start a VM executing an activation
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* group.
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*
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* The activator spawns (as a child process) an activation group as needed
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* and directs activation requests to the appropriate activation
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* group. After spawning the VM, the activator passes some
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* information to the bootstrap code via its stdin:
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* <ul>
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* <li> the activation group's id,
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* <li> the activation group's descriptor (an instance of the class
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* java.rmi.activation.ActivationGroupDesc) for the group, adn
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* <li> the group's incarnation number.
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* </ul><p>
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*
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* When the bootstrap VM starts executing, it reads group id and
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* descriptor from its stdin so that it can create the activation
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* group for the VM.
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*
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* @author Ann Wollrath
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*/
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@SuppressWarnings("removal")
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public abstract class ActivationGroupInit
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{
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/**
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* Main program to start a VM for an activation group.
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*/
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public static void main(String args[])
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{
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try {
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if (System.getSecurityManager() == null) {
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System.setSecurityManager(new SecurityManager());
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}
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// read group id, descriptor, and incarnation number from stdin
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MarshalInputStream in = new MarshalInputStream(System.in);
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ActivationGroupID id = (ActivationGroupID)in.readObject();
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ActivationGroupDesc desc = (ActivationGroupDesc)in.readObject();
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long incarnation = in.readLong();
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// create and set group for the VM
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ActivationGroup.createGroup(id, desc, incarnation);
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} catch (Exception e) {
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System.err.println("Exception in starting ActivationGroupInit:");
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e.printStackTrace();
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} finally {
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try {
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System.in.close();
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// note: system out/err shouldn't be closed
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// since the parent may want to read them.
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} catch (Exception ex) {
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// ignore exceptions
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}
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}
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}
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}
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