1 /* 2 * Copyright (c) 2019, 2020, 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 package gc.g1; 25 26 /** 27 * @test TestPeriodicLogMessages 28 * @bug 8216490 29 * @requires vm.gc.G1 30 * @summary Verify that log messages are printed as expected 31 * @library /test/lib / 32 * @modules java.base/jdk.internal.misc 33 * @modules java.management/sun.management 34 * @run driver gc.g1.TestPeriodicLogMessages 35 */ 36 37 import jdk.test.lib.process.OutputAnalyzer; 38 import jdk.test.lib.process.ProcessTools; 39 40 public class TestPeriodicLogMessages { 41 42 public static void main(String[] args) throws Exception { 43 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 44 "-XX:G1PeriodicGCInterval=0", 45 "-Xlog:gc,gc+periodic=debug", 46 "-Xmx10M", 47 GCTest.class.getName()); 48 49 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 50 output.shouldContain("Periodic GC disabled"); 51 output.shouldNotContain("Checking for periodic GC"); 52 output.shouldHaveExitValue(0); 53 54 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 55 "-XX:G1PeriodicGCInterval=100", 56 "-Xlog:gc,gc+periodic=debug", 57 "-Xmx10M", 58 GCTest.class.getName()); 59 60 output = new OutputAnalyzer(pb.start()); 61 output.shouldContain("Periodic GC enabled with interval 100ms"); 62 output.shouldContain("Checking for periodic GC"); 63 output.shouldHaveExitValue(0); 64 } 65 66 static class GCTest { 67 public static void main(String [] args) throws Exception { 68 System.out.println("Waiting for messages..."); 69 Thread.sleep(1000); 70 System.out.println("Done"); 71 } 72 } 73 } 74 75