1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test TestWBGC 26 * @bug 8055098 27 * @summary Test verify that WB methods isObjectInOldGen and youngGC works correctly. 28 * @library /testlibrary /../../test/lib 29 * @build TestWBGC 30 * @run main ClassFileInstaller jdk.testlib.WhiteBox 31 * @run driver TestWBGC 32 */ 33 import com.oracle.java.testlibrary.*; 34 import jdk.testlib.WhiteBox; 35 36 public class TestWBGC { 37 38 public static void main(String args[]) throws Exception { 39 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 40 true, 41 "-Xbootclasspath/a:.", 42 "-XX:+UnlockDiagnosticVMOptions", 43 "-XX:+WhiteBoxAPI", 44 "-XX:MaxTenuringThreshold=1", 45 "-XX:+PrintGC", 46 GCYoungTest.class.getName()); 47 48 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 49 System.out.println(output.getStdout()); 50 output.shouldHaveExitValue(0); 51 output.shouldContain("WhiteBox Initiated Young GC"); 52 output.shouldNotContain("Full"); 53 // To be sure that we don't provoke Full GC additionaly to young 54 } 55 56 public static class GCYoungTest { 57 static WhiteBox wb = WhiteBox.getWhiteBox(); 58 public static Object obj; 59 60 public static void main(String args[]) { 61 obj = new Object(); 62 Asserts.assertFalse(wb.isObjectInOldGen(obj)); 63 wb.youngGC(); 64 wb.youngGC(); 65 // 2 young GC is needed to promote object into OldGen 66 Asserts.assertTrue(wb.isObjectInOldGen(obj)); 67 } 68 } 69 }