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