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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+package com.sun.star.lib.uno.bridges.javaremote;
+
+import com.sun.star.bridge.XInstanceProvider;
+import com.sun.star.lib.TestBed;
+import com.sun.star.lib.uno.typeinfo.MethodTypeInfo;
+import com.sun.star.lib.uno.typeinfo.TypeInfo;
+import com.sun.star.uno.UnoRuntime;
+import com.sun.star.uno.XComponentContext;
+import com.sun.star.uno.XInterface;
+import complexlib.ComplexTestCase;
+
+/**
+ * Test case for bug #108825#.
+ *
+ * <p>Bug #108825# "Java UNO Remote Bridge: Mapped-out Objects Not Held" shows
+ * that local objects that are mapped out via a remote bridge, but not held
+ * locally, might be garbage collected while there are still remote references
+ * to them. This test is not guaranteed to always work reliably, see comment in
+ * the code.</p>
+ */
+public final class Bug108825_Test extends ComplexTestCase {
+ public String getTestObjectName() {
+ return getClass().getName();
+ }
+
+ public String[] getTestMethodNames() {
+ return new String[] { "test" };
+ }
+
+ public void test() throws Exception {
+ TestBed t = new TestBed();
+ assure("test", t.execute(new Provider(t), true, Client.class, 0));
+ }
+
+ public static final class Client extends TestBed.Client {
+ public static void main(String[] args) {
+ new Client().execute();
+ }
+
+ protected boolean run(XComponentContext context) throws Throwable {
+ XTest test = UnoRuntime.queryInterface(
+ XTest.class, getBridge(context).getInstance("Test"));
+ // Send the XObject that is held on the server side amidst two
+ // dummies that are not held on the server side; then wait for the
+ // dummies to be garbage collected, hoping that the XObject, if it
+ // is erroneously not held on the client side, will be garbage
+ // collected, too. Obviously, this is not guaranteed to always work
+ // (the VM might chose not to garbage collect the dummies, hanging
+ // the test forever; or the VM might chose to garbage collect the
+ // dummies but not the XObject, making the test pass erroneously).
+ test.offer(new Dummy(), new XObject() { public void call() {} },
+ new Dummy());
+ System.out.println("Client waiting for garbage collection...");
+ for (;;) {
+ synchronized (lock) {
+ if (finalizedCount == 2) {
+ break;
+ }
+ }
+ test.remoteGc();
+ gc();
+ }
+ System.out.println("Client garbage collection done.");
+ test.notification();
+ return true;
+ }
+
+ private final class Dummy implements XDummy {
+ protected void finalize() {
+ synchronized (lock) {
+ ++finalizedCount;
+ }
+ }
+ }
+
+ private final Object lock = new Object();
+ private int finalizedCount = 0;
+ }
+
+ // Make it as likely as possible that the VM reclaims all garbage:
+ private static void gc() {
+ System.gc();
+ System.runFinalization();
+ byte[] garbage = new byte[1024 * 1024];
+ }
+
+ private static final class Provider implements XInstanceProvider {
+ public Provider(TestBed testBed) {
+ this.testBed = testBed;
+ }
+
+ public Object getInstance(String instanceName) {
+ return new XTest() {
+ public void offer(XDummy dummy1, XObject obj, XDummy dummy2)
+ {
+ this.obj = obj;
+ }
+
+ public void remoteGc() {
+ gc();
+ }
+
+ public void notification() {
+ obj.call();
+ testBed.serverDone(true);
+ }
+
+ private XObject obj;
+ };
+ }
+
+ private final TestBed testBed;
+ }
+
+ public interface XDummy extends XInterface {
+ TypeInfo[] UNOTYPEINFO = null;
+ }
+
+ public interface XObject extends XInterface {
+ void call();
+
+ TypeInfo[] UNOTYPEINFO = { new MethodTypeInfo("call", 0, 0) };
+ }
+
+ public interface XTest extends XInterface {
+ void offer(XDummy dummy1, XObject obj, XDummy dummy2);
+
+ void remoteGc();
+
+ void notification();
+
+ TypeInfo[] UNOTYPEINFO = { new MethodTypeInfo("offer", 0, 0),
+ new MethodTypeInfo("remoteGc", 1, 0),
+ new MethodTypeInfo("notification", 2, 0) };
+ }
+}