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