Showing the changes to java/pkg/sun/rmi/server/ActivationGroupInit.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2002, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.rmi.server; | ||
| 27 | |||
| 28 | import java.rmi.activation.ActivationGroupDesc; | ||
| 29 | import java.rmi.activation.ActivationGroupID; | ||
| 30 | import java.rmi.activation.ActivationGroup; | ||
| 31 | |||
| 32 | /** | ||
| 33 | * This is the bootstrap code to start a VM executing an activation | ||
| 34 | * group. | ||
| 35 | * | ||
| 36 | * The activator spawns (as a child process) an activation group as needed | ||
| 37 | * and directs activation requests to the appropriate activation | ||
| 38 | * group. After spawning the VM, the activator passes some | ||
| 39 | * information to the bootstrap code via its stdin: <p> | ||
| 40 | * <ul> | ||
| 41 | * <li> the activation group's id, | ||
| 42 | * <li> the activation group's descriptor (an instance of the class | ||
| 43 | * java.rmi.activation.ActivationGroupDesc) for the group, adn | ||
| 44 | * <li> the group's incarnation number. | ||
| 45 | * </ul><p> | ||
| 46 | * | ||
| 47 | * When the bootstrap VM starts executing, it reads group id and | ||
| 48 | * descriptor from its stdin so that it can create the activation | ||
| 49 | * group for the VM. | ||
| 50 | * | ||
| 51 | * @author Ann Wollrath | ||
| 52 | */ | ||
| 53 | public abstract class ActivationGroupInit | ||
| 54 | { | ||
| 55 | /** | ||
| 56 | * Main program to start a VM for an activation group. | ||
| 57 | */ | ||
| 58 | public static void main(String args[]) | ||
| 59 | { | ||
| 60 | try { | ||
| 61 | if (System.getSecurityManager() == null) { | ||
| 62 | System.setSecurityManager(new SecurityManager()); | ||
| 63 | } | ||
| 64 | // read group id, descriptor, and incarnation number from stdin | ||
| 65 | MarshalInputStream in = new MarshalInputStream(System.in); | ||
| 66 | ActivationGroupID id = (ActivationGroupID)in.readObject(); | ||
| 67 | ActivationGroupDesc desc = (ActivationGroupDesc)in.readObject(); | ||
| 68 | long incarnation = in.readLong(); | ||
| 69 | |||
| 70 | // create and set group for the VM | ||
| 71 | ActivationGroup.createGroup(id, desc, incarnation); | ||
| 72 | } catch (Exception e) { | ||
| 73 | System.err.println("Exception in starting ActivationGroupInit:"); | ||
| 74 | e.printStackTrace(); | ||
| 75 | } finally { | ||
| 76 | try { | ||
| 77 | System.in.close(); | ||
| 78 | // note: system out/err shouldn't be closed | ||
| 79 | // since the parent may want to read them. | ||
| 80 | } catch (Exception ex) { | ||
| 81 | // ignore exceptions | ||
| 82 | } | ||
| 83 | } | ||
| 84 | } | ||
| 85 | } | ||