1 /*
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   3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   5 * This code is free software; you can redistribute it and/or modify it
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   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  * @summary Tests argument processing for initial tenuring threshold
  29  * @library /testlibrary
  30  * @modules java.base/sun.misc
  31  *          java.management
  32  * @run main/othervm TestInitialTenuringThreshold
  33  * @author thomas.schatzl@oracle.com
  34  */
  35 
  36 import jdk.test.lib.*;
  37 
  38 public class TestInitialTenuringThreshold {
  39 
  40   public static void runWithThresholds(int initial, int max, boolean shouldfail) throws Exception {
  41     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  42       "-XX:+UseParallelGC",
  43       "-XX:InitialTenuringThreshold=" + String.valueOf(initial),
  44       "-XX:MaxTenuringThreshold=" + String.valueOf(max),
  45       "-version"
  46       );
  47 
  48     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  49     if (shouldfail) {
  50       output.shouldHaveExitValue(1);
  51     } else {
  52       output.shouldHaveExitValue(0);
  53     }
  54   }
  55 
  56 
  57   public static void main(String args[]) throws Exception {
  58     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  59       // some value below the default value of InitialTenuringThreshold of 7
  60       "-XX:MaxTenuringThreshold=1",
  61       "-version"
  62       );
  63 
  64     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  65     output.shouldHaveExitValue(0);
  66     // successful tests
  67     runWithThresholds(0, 10, false);
  68     runWithThresholds(5, 5, false);
  69     runWithThresholds(8, 16, false);
  70     // failing tests
  71     runWithThresholds(10, 0, true);
  72     runWithThresholds(9, 8, true);
  73     runWithThresholds(-1, 8, true);
  74     runWithThresholds(0, -1, true);
  75     runWithThresholds(8, -1, true);
  76     runWithThresholds(16, 8, true);
  77     runWithThresholds(8, 17, true);
  78   }
  79 }