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
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  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.
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  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