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.
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  23 
  24 /*
  25  * @test TestRemsetLogging.java
  26  * @bug 8013895 8129977
  27  * @library /testlibrary
  28  * @modules java.base/sun.misc
  29  *          java.management/sun.management
  30  * @build TestRemsetLoggingTools TestRemsetLogging
  31  * @summary Verify output of -Xlog:gc+remset*=trace
  32  * @run main TestRemsetLogging
  33  *
  34  * Test the output of -Xlog:gc+remset*=trace in conjunction with G1SummarizeRSetStatsPeriod.
  35  */
  36 
  37 public class TestRemsetLogging {
  38 
  39     public static void main(String[] args) throws Exception {
  40         String result;
  41 
  42         if (!TestRemsetLoggingTools.testingG1GC()) {
  43             return;
  44         }
  45 
  46         // no remembered set summary output
  47         result = TestRemsetLoggingTools.runTest(null, 0);
  48         TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);
  49 
  50         // no remembered set summary output
  51         result = TestRemsetLoggingTools.runTest(null, 2);
  52         TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);
  53 
  54         // no remembered set summary output
  55         result = TestRemsetLoggingTools.runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
  56         TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);
  57 
  58         // single remembered set summary output at the end
  59         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace" }, 0);
  60         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);
  61 
  62         // single remembered set summary output at the end
  63         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace" }, 2);
  64         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);
  65 
  66         // single remembered set summary output
  67         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0);
  68         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);
  69 
  70         // two times remembered set summary output
  71         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
  72         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 2);
  73 
  74         // four times remembered set summary output
  75         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
  76         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 6);
  77 
  78         // three times remembered set summary output
  79         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3);
  80         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 4);
  81 
  82         // single remembered set summary output
  83         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3);
  84         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 2);
  85     }
  86 }
  87