TestObjectTenuringFlags.java revision 6197:3c9392f1ee18 
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23
24/*
25 * @test TestObjectTenuringFlags
26 * @key gc
27 * @bug 6521376
28 * @summary Tests argument processing for NeverTenure, AlwaysTenure,
29 * and MaxTenuringThreshold
30 * @library /testlibrary
31 * @build TestObjectTenuringFlags FlagsValue
32 * @run main/othervm TestObjectTenuringFlags
33 */
34
35import com.oracle.java.testlibrary.*;
36
37import java.util.*;
38
39public class TestObjectTenuringFlags {
40  public static void main(String args[]) throws Exception {
41    // default case
42    runTenuringFlagsConsistencyTest(
43        new String[]{},
44        false /* shouldFail */,
45        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
46
47    // valid cases
48    runTenuringFlagsConsistencyTest(
49        new String[]{"-XX:+NeverTenure"},
50        false /* shouldFail */,
51        new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
52
53    runTenuringFlagsConsistencyTest(
54        new String[]{"-XX:+AlwaysTenure"},
55        false /* shouldFail */,
56        new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
57
58    runTenuringFlagsConsistencyTest(
59        new String[]{"-XX:MaxTenuringThreshold=0"},
60        false /* shouldFail */,
61        new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
62
63    runTenuringFlagsConsistencyTest(
64        new String[]{"-XX:MaxTenuringThreshold=5"},
65        false /* shouldFail */,
66        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 5));
67
68    runTenuringFlagsConsistencyTest(
69        new String[]{"-XX:MaxTenuringThreshold=10"},
70        false /* shouldFail */,
71        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 10));
72
73    runTenuringFlagsConsistencyTest(
74        new String[]{"-XX:MaxTenuringThreshold=15"},
75        false /* shouldFail */,
76        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
77
78    runTenuringFlagsConsistencyTest(
79        new String[]{"-XX:MaxTenuringThreshold=16"},
80        false /* shouldFail */,
81        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
82
83    runTenuringFlagsConsistencyTest(
84        new String[]{"-XX:InitialTenuringThreshold=0"},
85        false /* shouldFail */,
86        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 0, 15));
87
88    runTenuringFlagsConsistencyTest(
89        new String[]{"-XX:InitialTenuringThreshold=5"},
90        false /* shouldFail */,
91        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 15));
92
93    runTenuringFlagsConsistencyTest(
94        new String[]{"-XX:InitialTenuringThreshold=10"},
95        false /* shouldFail */,
96        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 10, 15));
97
98    runTenuringFlagsConsistencyTest(
99        new String[]{"-XX:InitialTenuringThreshold=15"},
100        false /* shouldFail */,
101        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 15, 15));
102
103    // "Last option wins" cases
104    runTenuringFlagsConsistencyTest(
105        new String[]{"-XX:+AlwaysTenure", "-XX:+NeverTenure"},
106        false /* shouldFail */,
107        new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
108
109    runTenuringFlagsConsistencyTest(
110        new String[]{"-XX:+NeverTenure", "-XX:+AlwaysTenure"},
111        false /* shouldFail */,
112        new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
113
114    runTenuringFlagsConsistencyTest(
115        new String[]{"-XX:MaxTenuringThreshold=16", "-XX:+AlwaysTenure"},
116        false /* shouldFail */,
117        new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
118
119    runTenuringFlagsConsistencyTest(
120        new String[]{"-XX:+AlwaysTenure", "-XX:MaxTenuringThreshold=16"},
121        false /* shouldFail */,
122        new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
123
124    runTenuringFlagsConsistencyTest(
125        new String[]{"-XX:MaxTenuringThreshold=0", "-XX:+NeverTenure"},
126        false /* shouldFail */,
127        new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
128
129    runTenuringFlagsConsistencyTest(
130        new String[]{"-XX:+NeverTenure", "-XX:MaxTenuringThreshold=0"},
131        false /* shouldFail */,
132        new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
133
134    // Illegal cases
135    runTenuringFlagsConsistencyTest(
136        new String[]{"-XX:MaxTenuringThreshold=17"},
137        true /* shouldFail */,
138        new ExpectedTenuringFlags());
139
140    runTenuringFlagsConsistencyTest(
141        new String[]{"-XX:InitialTenuringThreshold=16"},
142        true /* shouldFail */,
143        new ExpectedTenuringFlags());
144
145    runTenuringFlagsConsistencyTest(
146        new String[]{"-XX:InitialTenuringThreshold=17"},
147        true /* shouldFail */,
148        new ExpectedTenuringFlags());
149  }
150
151  private static void runTenuringFlagsConsistencyTest(String[] tenuringFlags,
152          boolean shouldFail,
153          ExpectedTenuringFlags expectedFlags) throws Exception {
154    List<String> vmOpts = new ArrayList<>();
155    if (tenuringFlags.length > 0) {
156      Collections.addAll(vmOpts, tenuringFlags);
157    }
158    Collections.addAll(vmOpts, "-XX:+PrintFlagsFinal", "-version");
159
160    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
161    OutputAnalyzer output = new OutputAnalyzer(pb.start());
162
163    if (shouldFail) {
164      output.shouldHaveExitValue(1);
165    } else {
166      output.shouldHaveExitValue(0);
167      String stdout = output.getStdout();
168      checkTenuringFlagsConsistency(stdout, expectedFlags);
169    }
170  }
171
172  private static void checkTenuringFlagsConsistency(String output, ExpectedTenuringFlags expectedFlags) {
173    if (expectedFlags.alwaysTenure != FlagsValue.getFlagBoolValue("AlwaysTenure", output)) {
174      throw new RuntimeException(
175            "Actual flag AlwaysTenure " + FlagsValue.getFlagBoolValue("AlwaysTenure", output) +
176            " is not equal to expected flag AlwaysTenure " + expectedFlags.alwaysTenure);
177    }
178
179    if (expectedFlags.neverTenure != FlagsValue.getFlagBoolValue("NeverTenure", output)) {
180      throw new RuntimeException(
181            "Actual flag NeverTenure " + FlagsValue.getFlagBoolValue("NeverTenure", output) +
182            " is not equal to expected flag NeverTenure " + expectedFlags.neverTenure);
183    }
184
185    if (expectedFlags.initialTenuringThreshold != FlagsValue.getFlagLongValue("InitialTenuringThreshold", output)) {
186      throw new RuntimeException(
187            "Actual flag InitialTenuringThreshold " + FlagsValue.getFlagLongValue("InitialTenuringThreshold", output) +
188            " is not equal to expected flag InitialTenuringThreshold " + expectedFlags.initialTenuringThreshold);
189    }
190
191    if (expectedFlags.maxTenuringThreshold != FlagsValue.getFlagLongValue("MaxTenuringThreshold", output)) {
192      throw new RuntimeException(
193            "Actual flag MaxTenuringThreshold " + FlagsValue.getFlagLongValue("MaxTenuringThreshold", output) +
194            " is not equal to expected flag MaxTenuringThreshold " + expectedFlags.maxTenuringThreshold);
195    }
196  }
197}
198
199class ExpectedTenuringFlags {
200    public boolean alwaysTenure;
201    public boolean neverTenure;
202    public long initialTenuringThreshold;
203    public long maxTenuringThreshold;
204
205    public ExpectedTenuringFlags(boolean alwaysTenure,
206            boolean neverTenure,
207            long initialTenuringThreshold,
208            long maxTenuringThreshold) {
209      this.alwaysTenure = alwaysTenure;
210      this.neverTenure = neverTenure;
211      this.initialTenuringThreshold = initialTenuringThreshold;
212      this.maxTenuringThreshold = maxTenuringThreshold;
213    }
214    public ExpectedTenuringFlags() {}
215}
216