1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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
37import jdk.test.lib.process.OutputAnalyzer;
38import jdk.test.lib.process.ProcessTools;
39
40public 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}
82