| /* |
| * Copyright (c) 2014, 2016, 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 TestWBGC |
| * @bug 8055098 |
| * @summary Test verify that WB methods isObjectInOldGen and youngGC works correctly. |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @build sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * @run driver TestWBGC |
| */ |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import sun.hotspot.WhiteBox; |
| |
| public class TestWBGC { |
| |
| public static void main(String args[]) throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| true, |
| "-Xbootclasspath/a:.", |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:+WhiteBoxAPI", |
| "-XX:MaxTenuringThreshold=1", |
| "-Xlog:gc", |
| GCYoungTest.class.getName()); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| System.out.println(output.getStdout()); |
| output.shouldHaveExitValue(0); |
| output.shouldContain("WhiteBox Initiated Young GC"); |
| output.shouldNotContain("Full"); |
| // To be sure that we don't provoke Full GC additionaly to young |
| } |
| |
| public static class GCYoungTest { |
| static WhiteBox wb = WhiteBox.getWhiteBox(); |
| public static Object obj; |
| |
| public static void main(String args[]) { |
| obj = new Object(); |
| Asserts.assertFalse(wb.isObjectInOldGen(obj)); |
| wb.youngGC(); |
| wb.youngGC(); |
| // 2 young GC is needed to promote object into OldGen |
| Asserts.assertTrue(wb.isObjectInOldGen(obj)); |
| } |
| } |
| } |