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
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  22 */
  23 
  24 /*
  25  * @test TestInitialTenuringThreshold
  26  * @key gc
  27  * @bug 8014765
  28  * @requires vm.gc.Parallel
  29  * @summary Tests argument processing for initial tenuring threshold
  30  * @library /test/lib
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @run main/othervm TestInitialTenuringThreshold
  34  * @author thomas.schatzl@oracle.com
  35  */
  36 
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 import jdk.test.lib.process.ProcessTools;
  39 
  40 public class TestInitialTenuringThreshold {
  41 
  42   public static void runWithThresholds(int initial, int max, boolean shouldfail) throws Exception {
  43     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  44       "-XX:+UseParallelGC",
  45       "-XX:InitialTenuringThreshold=" + String.valueOf(initial),
  46       "-XX:MaxTenuringThreshold=" + String.valueOf(max),
  47       "-version"
  48       );
  49 
  50     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  51     if (shouldfail) {
  52       output.shouldHaveExitValue(1);
  53     } else {
  54       output.shouldHaveExitValue(0);
  55     }
  56   }
  57 
  58 
  59   public static void main(String args[]) throws Exception {
  60     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  61       // some value below the default value of InitialTenuringThreshold of 7
  62       "-XX:MaxTenuringThreshold=1",
  63       "-version"
  64       );
  65 
  66     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  67     output.shouldHaveExitValue(0);
  68     // successful tests
  69     runWithThresholds(0, 10, false);
  70     runWithThresholds(5, 5, false);
  71     runWithThresholds(8, 16, false);
  72     // failing tests
  73     runWithThresholds(10, 0, true);
  74     runWithThresholds(9, 8, true);
  75     runWithThresholds(-1, 8, true);
  76     runWithThresholds(0, -1, true);
  77     runWithThresholds(8, -1, true);
  78     runWithThresholds(16, 8, true);
  79     runWithThresholds(8, 17, true);
  80   }
  81 }