/*
* Copyright (c) 1997, 2002, 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.
*
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*/
package sun.rmi.server;
import java.rmi.activation.ActivationGroupDesc;
import java.rmi.activation.ActivationGroupID;
import java.rmi.activation.ActivationGroup;
/**
* This is the bootstrap code to start a VM executing an activation
* group.
*
* The activator spawns (as a child process) an activation group as needed
* and directs activation requests to the appropriate activation
* group. After spawning the VM, the activator passes some
* information to the bootstrap code via its stdin: <p>
* <ul>
* <li> the activation group's id,
* <li> the activation group's descriptor (an instance of the class
* java.rmi.activation.ActivationGroupDesc) for the group, adn
* <li> the group's incarnation number.
* </ul><p>
*
* When the bootstrap VM starts executing, it reads group id and
* descriptor from its stdin so that it can create the activation
* group for the VM.
*
* @author Ann Wollrath
*/
public abstract class ActivationGroupInit
{
/**
* Main program to start a VM for an activation group.
*/
public static void main(String args[])
{
try {
if (System.getSecurityManager() == null) {
System.setSecurityManager(new SecurityManager());
}
// read group id, descriptor, and incarnation number from stdin
MarshalInputStream in = new MarshalInputStream(System.in);
ActivationGroupID id = (ActivationGroupID)in.readObject();
ActivationGroupDesc desc = (ActivationGroupDesc)in.readObject();
long incarnation = in.readLong();
// create and set group for the VM
ActivationGroup.createGroup(id, desc, incarnation);
} catch (Exception e) {
System.err.println("Exception in starting ActivationGroupInit:");
e.printStackTrace();
} finally {
try {
System.in.close();
// note: system out/err shouldn't be closed
// since the parent may want to read them.
} catch (Exception ex) {
// ignore exceptions
}
}
}
}