1 /* 2 * Copyright (c) 2013, 2015, 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 TestStringSymbolTableStats.java 26 * @bug 8027476 8027455 27 * @summary Ensure that the G1TraceStringSymbolTableScrubbing prints the expected message. 28 * @key gc 29 * @library /testlibrary 30 * @modules java.base/sun.misc 31 * java.management 32 */ 33 34 import jdk.test.lib.ProcessTools; 35 import jdk.test.lib.OutputAnalyzer; 36 37 public class TestStringSymbolTableStats { 38 public static void main(String[] args) throws Exception { 39 40 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 41 "-XX:+UnlockExperimentalVMOptions", 42 "-Xlog:gc+stringdedup=trace", 43 SystemGCTest.class.getName()); 44 45 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 46 47 System.out.println("Output:\n" + output.getOutput()); 48 49 output.shouldContain("Cleaned string and symbol table"); 50 output.shouldHaveExitValue(0); 51 } 52 53 static class SystemGCTest { 54 public static void main(String [] args) { 55 System.out.println("Calling System.gc()"); 56 System.gc(); 57 } 58 } 59 }