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/*
* Copyright (c) 2001, 2017, 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.
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4308492
* @summary In addition to keeping the VM alive (with a non-daeman thread)
* while there are remote objects exported, the RMI runtime should also
* keep it alive while there remain calls in progress (to remote objects
* the have presumably been unexported), so that a remote object can more
* conveniently implement a graceful remote shutdown method (that unexports
* the object).
* @author Peter Jones
*
* @library ../../../testlibrary
* @modules java.rmi/sun.rmi.registry
* java.rmi/sun.rmi.server
* java.rmi/sun.rmi.transport
* java.rmi/sun.rmi.transport.tcp
* @build TestLibrary JavaVM KeepAliveDuringCall_Stub
* ShutdownMonitor Shutdown ShutdownImpl ShutdownImpl_Stub
* @run main/othervm KeepAliveDuringCall
*/
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
public class KeepAliveDuringCall implements ShutdownMonitor {
public static final String BINDING = "KeepAliveDuringCall";
private static final int TIMEOUT = 20000;
private Object lock = new Object();
private Shutdown shutdown = null;
private boolean stillAlive = false;
public void submitShutdown(Shutdown shutdown) {
synchronized (lock) {
this.shutdown = shutdown;
lock.notifyAll();
}
}
public void declareStillAlive() {
synchronized (lock) {
stillAlive = true;
lock.notifyAll();
}
}
public static void main(String[] args) {
System.err.println("\nRegression test for bug 4308492\n");
KeepAliveDuringCall obj = new KeepAliveDuringCall();
JavaVM jvm = null;
try {
UnicastRemoteObject.exportObject(obj);
System.err.println("exported shutdown monitor");
Registry localRegistry = TestLibrary.createRegistryOnEphemeralPort();
int registryPort = TestLibrary.getRegistryPort(localRegistry);
System.err.println("created local registry");
localRegistry.bind(BINDING, obj);
System.err.println("bound shutdown monitor in local registry");
System.err.println("starting remote ShutdownImpl VM...");
jvm = new JavaVM("ShutdownImpl",
"-Drmi.registry.port=" +
registryPort, "");
jvm.start();
Shutdown s;
synchronized (obj.lock) {
System.err.println(
"waiting for submission of object to shutdown...");
while ((s = obj.shutdown) == null) {
obj.lock.wait(TIMEOUT);
}
if (s == null) {
throw new RuntimeException(
"TEST FAILED: timeout waiting for shutdown object " +
"to make initial contact");
}
System.err.println("shutdown object submitted: " + s);
}
try {
s.shutdown();
} catch (RemoteException e) {
throw new RuntimeException(
"TEST FAILED: shutdown method threw remote exception", e);
}
synchronized (obj.lock) {
if (!obj.stillAlive) {
throw new RuntimeException("TEST FAILED: " +
"shutdown object not detected alive after unexport");
}
}
System.err.println("TEST PASSED: " +
"shutdown object detected still alive after unexport");
} catch (Exception e) {
if (e instanceof RuntimeException) {
throw (RuntimeException) e;
} else {
throw new RuntimeException(
"TEST FAILED: unexpected exception", e);
}
} finally {
if (jvm != null) {
jvm.destroy();
}
try {
UnicastRemoteObject.unexportObject(obj, true);
} catch (RemoteException e) {
}
}
}
}
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