103 lines
3.2 KiB
Java
103 lines
3.2 KiB
Java
/*
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* Copyright (c) 2015, 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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import org.testng.annotations.Test;
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import org.testng.Assert;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.locks.Condition;
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import java.util.concurrent.locks.ReentrantLock;
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import com.oracle.java.testlibrary.dcmd.CommandExecutor;
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import com.oracle.java.testlibrary.dcmd.JMXExecutor;
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/*
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* @test
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* @summary Test of diagnostic command GC.run_finalization
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* @library /testlibrary
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* @modules java.base/sun.misc
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* java.compiler
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* java.management
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* jdk.jvmstat/sun.jvmstat.monitor
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* @build com.oracle.java.testlibrary.*
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* @build com.oracle.java.testlibrary.dcmd.*
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* @run testng RunFinalizationTest
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*/
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public class RunFinalizationTest {
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static ReentrantLock lock = new ReentrantLock();
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static Condition cond = lock.newCondition();
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static volatile boolean wasFinalized = false;
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static volatile boolean wasInitialized = false;
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class MyObject {
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public MyObject() {
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/* Make sure object allocation/deallocation is not optimized out */
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wasInitialized = true;
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}
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protected void finalize() {
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lock.lock();
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wasFinalized = true;
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cond.signalAll();
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lock.unlock();
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}
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}
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public static MyObject o;
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public void run(CommandExecutor executor) {
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lock.lock();
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o = new MyObject();
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o = null;
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System.gc();
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executor.execute("GC.run_finalization");
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int waited = 0;
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int waitTime = 15;
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try {
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System.out.println("Waiting for signal from finalizer");
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while (!cond.await(waitTime, TimeUnit.SECONDS)) {
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waited += waitTime;
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System.out.println(String.format("Waited %d seconds", waited));
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}
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System.out.println("Received signal");
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} catch (InterruptedException e) {
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Assert.fail("Test error: Interrupted while waiting for signal from finalizer", e);
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} finally {
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lock.unlock();
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}
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if (!wasFinalized) {
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Assert.fail("Test failure: Object was not finalized");
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}
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}
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@Test
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public void jmx() {
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run(new JMXExecutor());
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}
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}
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