1 /*
2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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
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).
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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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 */
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 * @modules java.base/sun.misc
32 * java.management
33 * @build TestObjectTenuringFlags FlagsValue
34 * @run main/othervm TestObjectTenuringFlags
35 */
36
37 import jdk.test.lib.*;
38
39 import java.util.*;
40
41 public class TestObjectTenuringFlags {
42 public static void main(String args[]) throws Exception {
43 // default case
44 runTenuringFlagsConsistencyTest(
45 new String[]{},
46 false /* shouldFail */,
47 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
48
49 // valid cases
50 runTenuringFlagsConsistencyTest(
51 new String[]{"-XX:+NeverTenure"},
52 false /* shouldFail */,
53 new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
54
55 runTenuringFlagsConsistencyTest(
56 new String[]{"-XX:+AlwaysTenure"},
57 false /* shouldFail */,
58 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
59
60 runTenuringFlagsConsistencyTest(
61 new String[]{"-XX:MaxTenuringThreshold=0"},
62 false /* shouldFail */,
63 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
64
65 runTenuringFlagsConsistencyTest(
66 new String[]{"-XX:MaxTenuringThreshold=5"},
67 false /* shouldFail */,
68 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 5));
69
70 runTenuringFlagsConsistencyTest(
71 new String[]{"-XX:MaxTenuringThreshold=10"},
72 false /* shouldFail */,
73 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 10));
74
75 runTenuringFlagsConsistencyTest(
76 new String[]{"-XX:MaxTenuringThreshold=15"},
77 false /* shouldFail */,
78 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
79
80 runTenuringFlagsConsistencyTest(
81 new String[]{"-XX:MaxTenuringThreshold=16"},
82 false /* shouldFail */,
83 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
84
85 runTenuringFlagsConsistencyTest(
86 new String[]{"-XX:InitialTenuringThreshold=0"},
87 false /* shouldFail */,
88 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 0, 15));
89
90 runTenuringFlagsConsistencyTest(
91 new String[]{"-XX:InitialTenuringThreshold=5"},
92 false /* shouldFail */,
93 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 15));
94
95 runTenuringFlagsConsistencyTest(
96 new String[]{"-XX:InitialTenuringThreshold=10"},
97 false /* shouldFail */,
98 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 10, 15));
99
100 runTenuringFlagsConsistencyTest(
101 new String[]{"-XX:InitialTenuringThreshold=15"},
102 false /* shouldFail */,
103 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 15, 15));
104
105 // "Last option wins" cases
106 runTenuringFlagsConsistencyTest(
107 new String[]{"-XX:+AlwaysTenure", "-XX:+NeverTenure"},
108 false /* shouldFail */,
109 new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
110
111 runTenuringFlagsConsistencyTest(
112 new String[]{"-XX:+NeverTenure", "-XX:+AlwaysTenure"},
113 false /* shouldFail */,
114 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
115
116 runTenuringFlagsConsistencyTest(
117 new String[]{"-XX:MaxTenuringThreshold=16", "-XX:+AlwaysTenure"},
118 false /* shouldFail */,
119 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
120
121 runTenuringFlagsConsistencyTest(
122 new String[]{"-XX:+AlwaysTenure", "-XX:MaxTenuringThreshold=16"},
123 false /* shouldFail */,
124 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
125
126 runTenuringFlagsConsistencyTest(
127 new String[]{"-XX:MaxTenuringThreshold=0", "-XX:+NeverTenure"},
128 false /* shouldFail */,
129 new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
130
131 runTenuringFlagsConsistencyTest(
132 new String[]{"-XX:+NeverTenure", "-XX:MaxTenuringThreshold=0"},
133 false /* shouldFail */,
134 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
135
136 // Illegal cases
137 runTenuringFlagsConsistencyTest(
138 new String[]{"-XX:MaxTenuringThreshold=17"},
139 true /* shouldFail */,
140 new ExpectedTenuringFlags());
141
142 runTenuringFlagsConsistencyTest(
143 new String[]{"-XX:InitialTenuringThreshold=16"},
144 true /* shouldFail */,
145 new ExpectedTenuringFlags());
146
147 runTenuringFlagsConsistencyTest(
148 new String[]{"-XX:InitialTenuringThreshold=17"},
149 true /* shouldFail */,
150 new ExpectedTenuringFlags());
151 }
152
153 private static void runTenuringFlagsConsistencyTest(String[] tenuringFlags,
154 boolean shouldFail,
155 ExpectedTenuringFlags expectedFlags) throws Exception {
156 List<String> vmOpts = new ArrayList<>();
157 if (tenuringFlags.length > 0) {
158 Collections.addAll(vmOpts, tenuringFlags);
159 }
160 Collections.addAll(vmOpts, "-XX:+PrintFlagsFinal", "-version");
161
162 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
163 OutputAnalyzer output = new OutputAnalyzer(pb.start());
164
165 if (shouldFail) {
166 output.shouldHaveExitValue(1);
167 } else {
168 output.shouldHaveExitValue(0);
169 String stdout = output.getStdout();
170 checkTenuringFlagsConsistency(stdout, expectedFlags);
171 }
172 }
173
174 private static void checkTenuringFlagsConsistency(String output, ExpectedTenuringFlags expectedFlags) {
175 if (expectedFlags.alwaysTenure != FlagsValue.getFlagBoolValue("AlwaysTenure", output)) {
176 throw new RuntimeException(
177 "Actual flag AlwaysTenure " + FlagsValue.getFlagBoolValue("AlwaysTenure", output) +
178 " is not equal to expected flag AlwaysTenure " + expectedFlags.alwaysTenure);
179 }
180
181 if (expectedFlags.neverTenure != FlagsValue.getFlagBoolValue("NeverTenure", output)) {
182 throw new RuntimeException(
183 "Actual flag NeverTenure " + FlagsValue.getFlagBoolValue("NeverTenure", output) +
184 " is not equal to expected flag NeverTenure " + expectedFlags.neverTenure);
185 }
186
187 if (expectedFlags.initialTenuringThreshold != FlagsValue.getFlagLongValue("InitialTenuringThreshold", output)) {
188 throw new RuntimeException(
189 "Actual flag InitialTenuringThreshold " + FlagsValue.getFlagLongValue("InitialTenuringThreshold", output) +
190 " is not equal to expected flag InitialTenuringThreshold " + expectedFlags.initialTenuringThreshold);
191 }
192
193 if (expectedFlags.maxTenuringThreshold != FlagsValue.getFlagLongValue("MaxTenuringThreshold", output)) {
194 throw new RuntimeException(
195 "Actual flag MaxTenuringThreshold " + FlagsValue.getFlagLongValue("MaxTenuringThreshold", output) +
196 " is not equal to expected flag MaxTenuringThreshold " + expectedFlags.maxTenuringThreshold);
197 }
198 }
199 }
200
201 class ExpectedTenuringFlags {
202 public boolean alwaysTenure;
203 public boolean neverTenure;
204 public long initialTenuringThreshold;
205 public long maxTenuringThreshold;
206
207 public ExpectedTenuringFlags(boolean alwaysTenure,
208 boolean neverTenure,
209 long initialTenuringThreshold,
210 long maxTenuringThreshold) {
211 this.alwaysTenure = alwaysTenure;
212 this.neverTenure = neverTenure;
213 this.initialTenuringThreshold = initialTenuringThreshold;
214 this.maxTenuringThreshold = maxTenuringThreshold;
215 }
216 public ExpectedTenuringFlags() {}
217 }