1 /*
   2  * Copyright (c) 2014, 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 package gc.logging;
  25 
  26 /*
  27  * @test TestGCId
  28  * @bug 8043607
  29  * @summary Ensure that the GCId is logged
  30  * @requires vm.gc=="null"
  31  * @key gc
  32  * @library /test/lib
  33  * @modules java.base/jdk.internal.misc
  34  *          java.management
  35  * @build sun.hotspot.WhiteBox
  36  * @run driver ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
  37  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.logging.TestGCId
  38  */
  39 
  40 import jdk.test.lib.process.OutputAnalyzer;
  41 import jdk.test.lib.process.ProcessTools;
  42 import sun.hotspot.gc.GC;
  43 
  44 public class TestGCId {
  45   public static void main(String[] args) throws Exception {
  46     testGCId("UseParallelGC");
  47     testGCId("UseG1GC");
  48     testGCId("UseConcMarkSweepGC");
  49     testGCId("UseSerialGC");
  50     if (GC.Shenandoah.isSupported()) {
  51         testGCId("UseShenandoahGC");
  52     }
  53   }
  54 
  55   private static void verifyContainsGCIDs(OutputAnalyzer output) {
  56     output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(0\\) ");
  57     output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(1\\) ");
  58     output.shouldHaveExitValue(0);
  59   }
  60 
  61   private static void testGCId(String gcFlag) throws Exception {
  62     ProcessBuilder pb_default =
  63       ProcessTools.createJavaProcessBuilder("-XX:+UnlockExperimentalVMOptions", "-XX:+" + gcFlag, "-Xlog:gc", "-Xmx10M", GCTest.class.getName());
  64     verifyContainsGCIDs(new OutputAnalyzer(pb_default.start()));
  65   }
  66 
  67   static class GCTest {
  68     private static byte[] garbage;
  69     public static void main(String [] args) {
  70       System.out.println("Creating garbage");
  71       // create 128MB of garbage. This should result in at least one GC
  72       for (int i = 0; i < 1024; i++) {
  73         garbage = new byte[128 * 1024];
  74       }
  75       // do a system gc to get one more gc
  76       System.gc();
  77       System.out.println("Done");
  78     }
  79   }
  80 }