c25dd16233
Changed RMI tests to use random port numbers for the RMI Registry and RMID so the tests can be run concurrently without test failures due to tests using the same port numbers. Reviewed-by: smarks, alanb
124 lines
4.7 KiB
Java
124 lines
4.7 KiB
Java
/*
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* Copyright (c) 1998, 2012, 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.
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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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/* @test
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* @bug 4164696
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* @summary The local garbage collector needs to inspect a client VM's heap
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* often enough (even if the VM is idle) to detect unreachable live remote
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* references, so that their server VMs can be informed that the client VM
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* is no longer holding a reference; this facilitates the server VM invoking
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* the remote object's unreferenced() method (if present), garbage collecting
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* the remote object, and allowing the server VM to exit. This test focuses
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* on the unreferenced() method being invoked: it tests that the callback
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* method will be invoked within a reasonable time after the remote object is
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* no longer remotely reachable.
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* @author Peter Jones
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*
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* @library ../../../testlibrary
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* @build FiniteGCLatency
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* @build FiniteGCLatency_Stub
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* @build TestLibrary
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* @run main/othervm/timeout=120 FiniteGCLatency
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*/
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import java.rmi.*;
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import java.rmi.registry.*;
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import java.rmi.server.*;
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public class FiniteGCLatency implements Remote, Unreferenced {
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private final static String BINDING = "FiniteGCLatency";
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private final static long GC_INTERVAL = 6000;
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private final static long TIMEOUT = 50000;
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private Object lock = new Object();
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private boolean unreferencedInvoked = false;
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public void unreferenced() {
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System.err.println("unreferenced() method invoked");
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synchronized (lock) {
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unreferencedInvoked = true;
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lock.notify();
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}
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}
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public static void main(String[] args) {
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System.err.println("\nRegression test for bug 4164696\n");
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/*
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* Set the interval that RMI will request for GC latency (before RMI
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* gets initialized and this property is read) to an unrealistically
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* small value, so that this test shouldn't have to wait too long.
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*/
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System.setProperty("sun.rmi.dgc.client.gcInterval",
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String.valueOf(GC_INTERVAL));
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FiniteGCLatency obj = new FiniteGCLatency();
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try {
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UnicastRemoteObject.exportObject(obj);
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System.err.println("exported remote object");
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Registry registry1 = TestLibrary.createRegistryOnUnusedPort();
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int port = TestLibrary.getRegistryPort(registry1);
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System.err.println("created registry");
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Registry registry = LocateRegistry.getRegistry("", port);
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registry.bind(BINDING, obj);
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System.err.println("bound remote object in registry");
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synchronized (obj.lock) {
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registry.unbind(BINDING);
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System.err.println("unbound remote object from registry; " +
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"waiting for unreferenced() callback...");
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obj.lock.wait(TIMEOUT);
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if (obj.unreferencedInvoked) {
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System.err.println("TEST PASSED: unreferenced() invoked");
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} else {
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throw new RuntimeException(
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"TEST FAILED: unrefereced() not invoked after " +
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((double) TIMEOUT / 1000.0) + " seconds");
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}
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}
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} catch (Exception e) {
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if (e instanceof RuntimeException) {
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throw (RuntimeException) e;
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} else {
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throw new RuntimeException(
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"TEST FAILED: unexpected exception: " + e.toString());
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}
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} finally {
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/*
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* When all is said and done, try to unexport the remote object
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* so that the VM has a chance to exit.
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*/
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try {
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UnicastRemoteObject.unexportObject(obj, true);
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} catch (RemoteException e) {
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}
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}
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}
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}
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