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Diffstat (limited to 'src/share/classes/sun/rmi/server/ActivationGroupInit.java')
-rw-r--r-- | src/share/classes/sun/rmi/server/ActivationGroupInit.java | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/share/classes/sun/rmi/server/ActivationGroupInit.java b/src/share/classes/sun/rmi/server/ActivationGroupInit.java new file mode 100644 index 000000000..4ee82133c --- /dev/null +++ b/src/share/classes/sun/rmi/server/ActivationGroupInit.java @@ -0,0 +1,85 @@ +/* + * Copyright 1997-2002 Sun Microsystems, Inc. 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. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun 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. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +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 + } + } + } +} |