1 /*
   2  * Copyright (c) 2013, 2016, 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 TestRemsetLogging.java
  26  * @requires vm.gc.G1
  27  * @bug 8013895 8129977 8145534
  28  * @library /testlibrary /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management/sun.management
  31  * @build TestRemsetLoggingTools TestRemsetLogging
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @summary Verify output of -Xlog:gc+remset*=trace
  35  * @run main TestRemsetLogging
  36  *
  37  * Test the output of -Xlog:gc+remset*=trace in conjunction with G1SummarizeRSetStatsPeriod.
  38  */
  39 
  40 public class TestRemsetLogging {
  41 
  42     public static void main(String[] args) throws Exception {
  43         String result;
  44 
  45         // no remembered set summary output
  46         result = TestRemsetLoggingTools.runTest(null, 0);
  47         TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);
  48 
  49         // no remembered set summary output
  50         result = TestRemsetLoggingTools.runTest(null, 2);
  51         TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);
  52 
  53         // no remembered set summary output
  54         result = TestRemsetLoggingTools.runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
  55         TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);
  56 
  57         // single remembered set summary output at the end
  58         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace" }, 0);
  59         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);
  60 
  61         // single remembered set summary output at the end
  62         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace" }, 2);
  63         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);
  64 
  65         // single remembered set summary output
  66         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0);
  67         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);
  68 
  69         // two times remembered set summary output
  70         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
  71         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 2);
  72 
  73         // four times remembered set summary output
  74         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
  75         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 6);
  76 
  77         // three times remembered set summary output
  78         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3);
  79         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 4);
  80 
  81         // single remembered set summary output
  82         result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3);
  83         TestRemsetLoggingTools.expectRSetSummaries(result, 1, 2);
  84     }
  85 }
  86