|
20249
|
1 /*
|
|
|
2 * Copyright (c) 2014, 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.
|
|
|
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
|
|
|
21 * questions.
|
|
|
22 */
|
|
|
23
|
|
|
24 import java.util.Objects;
|
|
|
25 import java.util.function.BiConsumer;
|
|
|
26 import java.util.function.Function;
|
|
|
27 import sun.hotspot.WhiteBox;
|
|
|
28 import sun.management.*;
|
|
|
29 import com.sun.management.*;
|
|
|
30 import com.oracle.java.testlibrary.*;
|
|
|
31
|
|
|
32 public final class VmFlagTest<T> {
|
|
|
33 public static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
|
|
|
34
|
|
|
35 private static final String NONEXISTENT_FLAG = "NonexistentFlag";
|
|
|
36 private final String flagName;
|
|
|
37 private final BiConsumer<T, T> test;
|
|
|
38 private final BiConsumer<String, T> set;
|
|
|
39 private final Function<String, T> get;
|
|
|
40
|
|
|
41 protected VmFlagTest(String flagName, BiConsumer<String, T> set,
|
|
|
42 Function<String, T> get, boolean isPositive) {
|
|
|
43 this.flagName = flagName;
|
|
|
44 this.set = set;
|
|
|
45 this.get = get;
|
|
|
46 if (isPositive) {
|
|
|
47 test = this::testPositive;
|
|
|
48 } else {
|
|
|
49 test = this::testNegative;
|
|
|
50 }
|
|
|
51 }
|
|
|
52
|
|
|
53 private void setNewValue(T value) {
|
|
|
54 set.accept(flagName, value);
|
|
|
55 }
|
|
|
56
|
|
|
57 private T getValue() {
|
|
|
58 T t = get.apply(flagName);
|
|
|
59 System.out.println("T = " + t);
|
|
|
60 return t;
|
|
|
61 }
|
|
|
62
|
|
|
63 protected static <T> void runTest(String existentFlag, T[] tests,
|
|
|
64 BiConsumer<String, T> set, Function<String, T> get) {
|
|
|
65 runTest(existentFlag, tests, tests, set, get);
|
|
|
66 }
|
|
|
67
|
|
|
68 protected static <T> void runTest(String existentFlag, T[] tests,
|
|
|
69 T[] results, BiConsumer<String, T> set, Function<String, T> get) {
|
|
|
70 if (existentFlag != null) {
|
|
|
71 new VmFlagTest(existentFlag, set, get, true).test(tests, results);
|
|
|
72 }
|
|
|
73 new VmFlagTest(NONEXISTENT_FLAG, set, get, false).test(tests, results);
|
|
|
74 }
|
|
|
75
|
|
|
76 public final void test(T[] tests, T[] results) {
|
|
|
77 Asserts.assertEQ(tests.length, results.length, "[TESTBUG] tests.length != results.length");
|
|
|
78 for (int i = 0, n = tests.length ; i < n; ++i) {
|
|
|
79 test.accept(tests[i], results[i]);
|
|
|
80 }
|
|
|
81 }
|
|
|
82
|
|
|
83 protected String getVMOptionAsString() {
|
|
|
84 HotSpotDiagnosticMXBean diagnostic
|
|
|
85 = ManagementFactoryHelper.getDiagnosticMXBean();
|
|
|
86 VMOption tmp;
|
|
|
87 try {
|
|
|
88 tmp = diagnostic.getVMOption(flagName);
|
|
|
89 } catch (IllegalArgumentException e) {
|
|
|
90 tmp = null;
|
|
|
91 }
|
|
|
92 return tmp == null ? null : tmp.getValue();
|
|
|
93 }
|
|
|
94
|
|
|
95 private void testPositive(T value, T expected) {
|
|
|
96 Asserts.assertEQ(getVMOptionAsString(), asString(getValue()));
|
|
|
97 setNewValue(value);
|
|
|
98 String newValue = getVMOptionAsString();
|
|
|
99 Asserts.assertEQ(newValue, asString(expected));
|
|
|
100 Asserts.assertEQ(getVMOptionAsString(), asString(getValue()));
|
|
|
101 }
|
|
|
102
|
|
|
103 private void testNegative(T value, T expected) {
|
|
|
104 String oldValue = getVMOptionAsString();
|
|
|
105 Asserts.assertEQ(oldValue, asString(getValue()));
|
|
|
106 setNewValue(value);
|
|
|
107 String newValue = getVMOptionAsString();
|
|
|
108 Asserts.assertEQ(oldValue, newValue);
|
|
|
109 }
|
|
|
110
|
|
|
111 private String asString(Object value) {
|
|
|
112 return value == null ? null : "" + value;
|
|
|
113 }
|
|
|
114 }
|
|
|
115
|
