1 /*
2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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).
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.
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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 TestObjectTenuringFlags
26 * @key gc
27 * @bug 6521376
28 * @requires vm.gc.Parallel
29 * @summary Tests argument processing for NeverTenure, AlwaysTenure,
30 * and MaxTenuringThreshold
31 * @library /test/lib
32 * @modules java.base/jdk.internal.misc
33 * java.management
34 * @run main/othervm TestObjectTenuringFlags
35 */
36
37 import jdk.test.lib.process.OutputAnalyzer;
38 import jdk.test.lib.process.ProcessTools;
39
40 import java.util.*;
41
42 public class TestObjectTenuringFlags {
43 public static void main(String args[]) throws Exception {
44 // default case
45 runTenuringFlagsConsistencyTest(
46 new String[]{},
47 false /* shouldFail */,
48 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
49
50 // valid cases
51 runTenuringFlagsConsistencyTest(
52 new String[]{"-XX:+NeverTenure"},
53 false /* shouldFail */,
54 new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
55
56 runTenuringFlagsConsistencyTest(
57 new String[]{"-XX:+AlwaysTenure"},
58 false /* shouldFail */,
59 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
60
61 runTenuringFlagsConsistencyTest(
62 new String[]{"-XX:MaxTenuringThreshold=0"},
63 false /* shouldFail */,
64 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
65
66 runTenuringFlagsConsistencyTest(
67 new String[]{"-XX:MaxTenuringThreshold=5"},
68 false /* shouldFail */,
69 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 5));
70
71 runTenuringFlagsConsistencyTest(
72 new String[]{"-XX:MaxTenuringThreshold=10"},
73 false /* shouldFail */,
74 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 10));
75
76 runTenuringFlagsConsistencyTest(
77 new String[]{"-XX:MaxTenuringThreshold=15"},
78 false /* shouldFail */,
79 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
80
81 runTenuringFlagsConsistencyTest(
82 new String[]{"-XX:MaxTenuringThreshold=16"},
83 false /* shouldFail */,
84 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
85
86 runTenuringFlagsConsistencyTest(
87 new String[]{"-XX:InitialTenuringThreshold=0"},
88 false /* shouldFail */,
89 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 0, 15));
90
91 runTenuringFlagsConsistencyTest(
92 new String[]{"-XX:InitialTenuringThreshold=5"},
93 false /* shouldFail */,
94 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 15));
95
96 runTenuringFlagsConsistencyTest(
97 new String[]{"-XX:InitialTenuringThreshold=10"},
98 false /* shouldFail */,
99 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 10, 15));
100
101 runTenuringFlagsConsistencyTest(
102 new String[]{"-XX:InitialTenuringThreshold=15"},
103 false /* shouldFail */,
104 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 15, 15));
105
106 // "Last option wins" cases
107 runTenuringFlagsConsistencyTest(
108 new String[]{"-XX:+AlwaysTenure", "-XX:+NeverTenure"},
109 false /* shouldFail */,
110 new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
111
112 runTenuringFlagsConsistencyTest(
113 new String[]{"-XX:+NeverTenure", "-XX:+AlwaysTenure"},
114 false /* shouldFail */,
115 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
116
117 runTenuringFlagsConsistencyTest(
118 new String[]{"-XX:MaxTenuringThreshold=16", "-XX:+AlwaysTenure"},
119 false /* shouldFail */,
120 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
121
122 runTenuringFlagsConsistencyTest(
123 new String[]{"-XX:+AlwaysTenure", "-XX:MaxTenuringThreshold=16"},
124 false /* shouldFail */,
125 new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
126
127 runTenuringFlagsConsistencyTest(
128 new String[]{"-XX:MaxTenuringThreshold=0", "-XX:+NeverTenure"},
129 false /* shouldFail */,
130 new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
131
132 runTenuringFlagsConsistencyTest(
133 new String[]{"-XX:+NeverTenure", "-XX:MaxTenuringThreshold=0"},
134 false /* shouldFail */,
135 new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
136
137 // Illegal cases
138 runTenuringFlagsConsistencyTest(
139 new String[]{"-XX:MaxTenuringThreshold=17"},
140 true /* shouldFail */,
141 new ExpectedTenuringFlags());
142
143 runTenuringFlagsConsistencyTest(
144 new String[]{"-XX:InitialTenuringThreshold=16"},
145 true /* shouldFail */,
146 new ExpectedTenuringFlags());
147
148 runTenuringFlagsConsistencyTest(
149 new String[]{"-XX:InitialTenuringThreshold=17"},
150 true /* shouldFail */,
151 new ExpectedTenuringFlags());
152 }
153
154 private static void runTenuringFlagsConsistencyTest(String[] tenuringFlags,
155 boolean shouldFail,
156 ExpectedTenuringFlags expectedFlags) throws Exception {
157 List<String> vmOpts = new ArrayList<>();
158 if (tenuringFlags.length > 0) {
159 Collections.addAll(vmOpts, tenuringFlags);
160 }
161 Collections.addAll(vmOpts, "-XX:+UseParallelGC", "-XX:+PrintFlagsFinal", "-version");
162
163 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
164 OutputAnalyzer output = new OutputAnalyzer(pb.start());
165
166 if (shouldFail) {
167 output.shouldHaveExitValue(1);
168 } else {
169 output.shouldHaveExitValue(0);
170 String stdout = output.getStdout();
171 checkTenuringFlagsConsistency(stdout, expectedFlags);
172 }
173 }
174
175 private static void checkTenuringFlagsConsistency(String output, ExpectedTenuringFlags expectedFlags) {
176 if (expectedFlags.alwaysTenure != FlagsValue.getFlagBoolValue("AlwaysTenure", output)) {
177 throw new RuntimeException(
178 "Actual flag AlwaysTenure " + FlagsValue.getFlagBoolValue("AlwaysTenure", output) +
179 " is not equal to expected flag AlwaysTenure " + expectedFlags.alwaysTenure);
180 }
181
182 if (expectedFlags.neverTenure != FlagsValue.getFlagBoolValue("NeverTenure", output)) {
183 throw new RuntimeException(
184 "Actual flag NeverTenure " + FlagsValue.getFlagBoolValue("NeverTenure", output) +
185 " is not equal to expected flag NeverTenure " + expectedFlags.neverTenure);
186 }
187
188 if (expectedFlags.initialTenuringThreshold != FlagsValue.getFlagLongValue("InitialTenuringThreshold", output)) {
189 throw new RuntimeException(
190 "Actual flag InitialTenuringThreshold " + FlagsValue.getFlagLongValue("InitialTenuringThreshold", output) +
191 " is not equal to expected flag InitialTenuringThreshold " + expectedFlags.initialTenuringThreshold);
192 }
193
194 if (expectedFlags.maxTenuringThreshold != FlagsValue.getFlagLongValue("MaxTenuringThreshold", output)) {
195 throw new RuntimeException(
196 "Actual flag MaxTenuringThreshold " + FlagsValue.getFlagLongValue("MaxTenuringThreshold", output) +
197 " is not equal to expected flag MaxTenuringThreshold " + expectedFlags.maxTenuringThreshold);
198 }
199 }
200 }
201
202 class ExpectedTenuringFlags {
203 public boolean alwaysTenure;
204 public boolean neverTenure;
205 public long initialTenuringThreshold;
206 public long maxTenuringThreshold;
207
208 public ExpectedTenuringFlags(boolean alwaysTenure,
209 boolean neverTenure,
210 long initialTenuringThreshold,
211 long maxTenuringThreshold) {
212 this.alwaysTenure = alwaysTenure;
213 this.neverTenure = neverTenure;
214 this.initialTenuringThreshold = initialTenuringThreshold;
215 this.maxTenuringThreshold = maxTenuringThreshold;
216 }
217 public ExpectedTenuringFlags() {}
218 }